10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

Annual Report Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

For the Fiscal Year Ended December 31, 2018

Commission File Number 000-29187-87

Carrizo Oil & Gas, Inc.

(Exact name of registrant as specified in its charter)

Texas	76-0415919
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
500 Dallas Street, Suite 2300 Houston, Texas	77002
(Principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (713) 328-1000

Securities Registered Pursuant to Section 12(b) of the Act:

Common Stock, $0.01 par value	NASDAQ Global Select Market
(Title of class)	(Name of exchange on which registered)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

YES  þ    NO  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.

YES  ¨    NO  þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  þ    NO  ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    YES  þ    NO  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	þ	Accelerated filer	¨
Non-accelerated filer	¨	Smaller reporting company	¨
		Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    YES  ¨    NO  þ

At June 29, 2018, the aggregate market value of the registrant’s Common Stock held by non-affiliates of the registrant was approximately $2.2 billion based on the closing price of such stock on such date of $27.85.

At February 22, 2019, the number of shares outstanding of the registrant’s Common Stock was 91,627,738.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive proxy statement for the Registrant’s 2019 Annual Meeting of Shareholders are incorporated by reference in Part III of this Form 10-K. Such definitive proxy statement will be filed with the U.S. Securities and Exchange Commission not later than 120 days subsequent to December 31, 2018.

TABLE OF CONTENTS

Forward-Looking Statements	3
PART I
Item 1. Business	5
Item 1A. Risk Factors	25
Item 1B. Unresolved Staff Comments	42
Item 2. Properties	42
Item 3. Legal Proceedings	42
Item 4. Mine Safety Disclosures	42
PART II
Item 5. Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities	42
Item 6. Selected Financial Data	44
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations	45
Item 7A. Qualitative and Quantitative Disclosures about Market Risk	60
Item 8. Financial Statements and Supplementary Data	62
Item 9. Changes In and Disagreements With Accountants on Accounting and Financial Disclosures	62
Item 9A. Controls and Procedures	62
Item 9B. Other Information	63
PART III
Item 10. Directors, Executive Officers and Corporate Governance	63
Item 11. Executive Compensation	63
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters	63
Item 13. Certain Relationships and Related Transactions, and Director Independence	63
Item 14. Principal Accounting Fees and Services	64
PART IV
Item 15. Exhibits and Financial Statement Schedules	64

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Forward-Looking Statements

This annual report contains statements concerning our intentions, expectations, projections, assessments of risks, estimations, beliefs, plans or predictions for the future, objectives, goals, strategies, future events or performance and underlying assumptions and other statements that are not historical facts. These statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding:

• our growth strategies;

• our ability to explore for and develop oil and gas resources successfully and economically;

• our estimates and forecasts of the timing, number, profitability and other results of wells we expect to drill and other exploration activities;

• our estimates, guidance and forecasts, including those regarding timing and levels of production;

• changes in working capital requirements, reserves, and acreage;

• the use of commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of our forecasted sales of production;

• anticipated trends in our business;

• availability of pipeline connections and water disposal on economic terms;

• effects of competition on us;

• our future results of operations;

• profitability of drilling locations;

• our liquidity and our ability to finance our exploration and development activities, including accessibility of borrowings under our revolving credit facility, our borrowing base, modification to financial covenants and the result of any borrowing base redetermination;

• our planned expenditures, prospects and capital expenditure plan;

• future market conditions in the oil and gas industry;

• our ability to make, integrate and develop acquisitions and realize any expected benefits or effects of any acquisitions or the timing, final purchase price, financing or consummation of any acquisitions;

• possible future divestitures or disposition transactions and the proceeds, results or benefits of any such transactions, including the timing thereof;

• the benefits, effects, availability of and results of new and existing joint ventures and sales transactions;

• our ability to maintain a sound financial position;

• receipt of receivables and proceeds from divestitures;

• our ability to complete planned transactions on desirable terms; and

• the impact of governmental regulation, taxes, market changes and world events.

You generally can identify our forward-looking statements by the words “anticipate,” “believe,” budgeted,” “continue,” “could,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “objective,” “plan,” “potential,” “predict,” “projection,” “scheduled,” “should,” or other similar words. Such statements rely on assumptions and involve risks and uncertainties, many of which are beyond our control, including, but not limited to, those relating to a worldwide economic downturn, availability of financing, our dependence on our exploratory drilling activities, the volatility of and changes in oil and gas prices, the need to replace reserves depleted by production, impairments of proved oil and gas properties, operating risks of oil and gas operations, our dependence on our key personnel, factors that affect our ability to manage our growth and achieve our business strategy, results, delays and uncertainties that may be encountered in drilling, development or production, interpretations and impact of oil and gas reserve estimation and disclosure requirements, activities and approvals of our partners and parties with whom we have alliances, technological changes, capital requirements, the timing and amount of borrowing base redeterminations and availability under our revolving credit facility, evaluations of us by lenders under our revolving credit facility, waivers or amendments under our revolving credit facility in connection with acquisitions, other actions by lenders and holders of our capital stock, the potential impact of government regulations, including current and proposed legislation and regulations related to hydraulic fracturing, oil and natural gas drilling, air emissions and climate change, regulatory determinations, litigation, competition, the uncertainty of reserve information and future net revenue estimates, failure to realize the anticipated benefits of an acquisition, market conditions

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and other factors affecting our ability to pay dividends on or redeem our preferred stock, integration and other acquisition risks, other factors affecting our ability to reach agreements or complete acquisitions or divestitures, actions by seller and buyers, effects of purchase price adjustments, availability of equipment and crews, actions by midstream and other industry participants, weather, our ability to obtain permits and licenses, the results of audits and assessments, the failure to obtain certain bank and lease consents, the existence and resolution of title defects, new taxes and impact fees, delays, costs and difficulties relating to our joint ventures, actions by joint venture parties, results of exploration activities, the availability, market conditions and completion of land acquisitions and dispositions, costs of oilfield services, completion and connection of wells, and other factors detailed in this annual report.

We have based our forward-looking statements on our management’s beliefs and assumptions based on information available to our management at the time the statements are made. We caution you that assumptions, beliefs, expectations, intentions and projections about future events may and often do vary materially from actual results. Therefore, we cannot assure you that actual results will not differ materially from those expressed or implied by our forward-looking statements.

Some of the factors that could cause actual results to differ from those expressed or implied in forward-looking statements are described under Part I, “Item 1A. Risk Factors”, other sections of this annual report, and in our other filings with the SEC. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual outcomes may vary materially from those indicated. All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by reference to these risks and uncertainties. You should not place undue reliance on our forward-looking statements. Each forward-looking statement speaks only as of the date of the particular statement, and, except as required by law, we undertake no duty to update or revise any forward-looking statement.

Certain terms used herein relating to the oil and gas industry are defined in “Glossary of Certain Industry Terms” included under Part I, “Item 1. Business.”

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PART I

Item 1. Business

General Overview

Carrizo Oil & Gas, Inc. is a Houston-based energy company which, together with its subsidiaries (collectively, “Carrizo,” the “Company” or “we”), is actively engaged in the exploration, development, and production of crude oil, NGLs, and natural gas from resource plays located in the United States. Our current operations are principally focused in proven, producing oil and gas plays in the Eagle Ford Shale in South Texas and the Permian Basin in West Texas.

Significant Developments in 2018

Acquisitions. On October 17, 2018, we closed on the acquisition with Devon Energy Production Company, L.P. (“Devon”), a subsidiary of Devon Energy Corporation, of oil and gas properties in the Delaware Basin in Reeves and Ward counties, Texas (the “Devon Acquisition”). The estimated aggregate purchase price of $196.6 million remains subject to post-closing adjustments.

Divestitures. In the first quarter of 2018, we closed on divestitures of substantially all of our assets in the Niobrara Formation and a portion of our assets in the Eagle Ford for aggregate net proceeds of approximately $381.3 million. In addition, we could receive contingent consideration of $5.0 million per year if crude oil prices exceed specified thresholds for each of the years of 2018 through 2020 as part of the Niobrara Formation divestiture.

On July 11, 2018, we closed on the divestiture of certain non-operated assets in the Delaware Basin for aggregate net proceeds of $30.9 million.

See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” of the Notes to our Consolidated Financial Statements for further discussion.

Liquidity and financings. On August 17, 2018, we completed a public offering of 9.5 million shares of our common stock at a price per share of $22.55. We used the proceeds of $213.7 million, net of offering costs, to fund the Devon Acquisition and for general corporate purposes.

We also redeemed the remaining $450.0 million aggregate principal amount outstanding of 7.50% Senior Notes due 2020 (the “7.50% Senior Notes”) and 50,000 shares of our 8.875% redeemable preferred stock (the “Preferred Stock”), representing 20% of the then issued and outstanding Preferred Stock.

During 2018, the borrowing base under our revolving credit facility increased from $830.0 million to $1.3 billion, primarily as a result of our continued development of our Eagle Ford and Delaware Basin assets. As of December 31, 2018, our elected commitment amount under our borrowing base was $1.1 billion.

See “Note 6. Long-Term Debt” and “Note 10. Shareholders’ Equity” of the Notes to our Consolidated Financial Statements for further discussion.

Production. Crude oil production in 2018 was 38,992 Bbls/d, an increase of 13% despite the divestitures in Niobrara and Eagle Ford in the first quarter of 2018, as compared to 34,428 Bbls/d in 2017, primarily driven by strong performance from our new wells in the Eagle Ford and Delaware Basin. Total production in 2018 was 60,382 Boe/d, an increase of 12% from 53,805 Boe/d in 2017, primarily due to the same reasons discussed above. See “—Summary of 2018 Proved Reserves, Production and Drilling by Area” for further discussion.

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Proved reserves. At year-end 2018, our proved reserves of 329.4MMBoe consist of 55% crude oil, 21% natural gas liquids and 24% natural gas. Our reserves increased 67.7 MMBoe, or 26%, from our year-end 2017 proved reserves of 261.7 MMBoe primarily as a result of our ongoing drilling program in the Eagle Ford and the Delaware Basin. The following is a summary of our proved reserves as of December 31, 2018 and 2017. See “—Additional Oil and Gas Disclosures—Proved Oil and Gas Reserves” for further discussion.

	Proved Reserves
	December 31, 2018	December 31, 2017
Region	(MMBoe)
Eagle Ford (1)	149.1	167.0
Delaware Basin	180.3	90.9
Other (2)	—	3.8
Total	329.4	261.7

(1) Included in the December 31, 2017 proved reserves are 10.9 MMBoe associated with a portion of our assets in the Eagle Ford that were divested in January 2018.

(2) In January 2018, we closed on the divestiture of substantially all of our Niobrara assets.

Recent Developments

Contingent consideration arrangements. For the year ended December 31, 2018, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration (each as defined in “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” of the Notes to our Consolidated Financial Statements) were exceeded. As a result, in January 2019, we paid $50.0 million and received $10.0 million from settlement of these contingent consideration arrangements. See “Note 12. Derivative Instruments” of the Notes to our Consolidated Financial Statements for further discussion.

2019 Drilling, completion, and infrastructure (“DC&I”) capital expenditure plan. Our 2019 DC&I capital expenditure plan is currently $525.0 million to $575.0 million. The assumptions in the 2019 DC&I capital expenditure plan include an expectation that we will achieve an improvement in capital efficiency relative to 2018 resulting from a combination of service cost reductions, efficiency gains, and changes to completion techniques that have already been implemented. We intend to finance our 2019 capital expenditure plan primarily from cash flow from operations and our senior secured revolving credit facility as well as other sources described in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources.” Our capital expenditure plan has the flexibility to adjust, should the commodity price environment change.

The following is a summary of our actual capital expenditures for 2018 and our planned capital expenditures for 2019:

	Capital Expenditures
	2019 Plan (1)		2018 Actual
	(In millions)
DC&I
Eagle Ford		$325.0		$522.9
Delaware Basin	225.0		321.2
Other	—		0.3
Total DC&I	550.0		844.4
Leasehold and seismic (2)	—		22.4
Total (3)		$550.0		$866.8

(1) Represents the midpoint of our 2019 DC&I capital expenditure plan of $525.0 million to $575.0 million.

(2) We do not provide guidance for leasehold and seismic capital expenditures given the discretionary nature of this spending.

(3) Our capital expenditure plan and the actual capital expenditures exclude acquisitions of oil and gas properties, capitalized general and administrative expense, interest expense and asset retirement costs.

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Summary of 2018 Proved Reserves, Production and Drilling by Region

	Eagle Ford			Delaware Basin			Total
Proved reserves
Crude oil (MBbls)		110,907			68,829			179,736
NGLs (MBbls)		19,183			49,940			69,123
Natural gas (MMcf)		114,092			368,969			483,061
Total proved reserves (MBoe)		149,105			180,264			329,369
Proved reserves by classification (MBoe)
Proved developed		74,999			55,900			130,899
Proved undeveloped		74,106			124,364			198,470
Total proved reserves (MBoe)		149,105			180,264			329,369
Percent of proved developed reserves		57	%		43	%		100	%
Percent of proved undeveloped reserves		37	%		63	%		100	%
Percent of total reserves		45	%		55	%		100	%
Production volumes	Total	Per Day		Total	Per Day		Total	Per Day
Crude oil (MBbls and Bbls/d)	10,655	29,192		3,534	9,682		14,232	38,992
NGLs (MBbls and Bbls/d)	1,575	4,316		2,118	5,802		3,701	10,139
Natural gas (MMcf and Mcf/d)	8,941	24,495		15,604	42,751		24,639	67,503
Total production volumes	13,721	37,591		8,252	22,609		22,040	60,382
Percent of total production		62	%		38	%		100	%
	Eagle Ford			Delaware Basin			Total
Operated Well Data	Gross	Net		Gross	Net		Gross	Net
Year Ended December 31, 2018
Drilled	100	94.4		31	24.1		131	118.5
Completed	92	81.5		25	20.1		117	101.6
December 31, 2018
Drilled but uncompleted	39	38.7		11	9.0		50	47.7
Producing	534	479.4		80	69.7		614	549.1

Regional Overview

Eagle Ford Shale

For 2018, the Eagle Ford remained our most significant operational area. Our core Eagle Ford properties are located in LaSalle County and, to a lesser extent, in McMullen, Frio and Atascosa counties in Texas. As of December 31, 2018, we held interests in approximately 91,770 gross (76,462 net) acres. In the first quarter of 2018, we closed on the sale of a portion of our assets in the Eagle Ford to EP Energy E&P Company, L.P. for aggregate net proceeds of $245.7 million. Excluding 1.3 MMBoe of production in 2017 from the divested assets, total Eagle Ford production increased approximately 10% over the year ended December 31, 2017. In 2018, we spent approximately $522.9 million in the Eagle Ford, which was approximately 19% above our 2018 DC&I capital expenditure plan for the Eagle Ford, due to our decision to shift capital to the Eagle Ford to take advantage of the superior returns that were offered from the play and avoid aggressively developing our Delaware Basin inventory during a period of weak local market pricing. We currently plan for approximately 59% of our 2019 DC&I capital expenditure plan to be directed towards opportunities in the Eagle Ford.

Delaware Basin

During 2014, we began to build an acreage position in the Delaware Basin in Culberson and Reeves counties, Texas, targeting the Wolfcamp Formation. In the third quarter of 2017, we closed on an acquisition of 16,508 net acres located in Reeves and Ward Counties, Texas from ExL Petroleum Management, LLC and ExL Petroleum Operating Inc. (the “ExL Acquisition”). In the fourth quarter of 2018, we closed on the Devon Acquisition which added approximately 10,000 net acres. As of December 31, 2018, we held interests in approximately 70,335 gross (46,004 net) acres in the Delaware Basin. Production in the Delaware Basin for the year ended December 31, 2018 increased 237% from the same period in 2017. Excluding production associated with the Devon

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Acquisition, production in the Delaware Basin for the year ended December 31, 2018 increased 231% as compared to the same period in 2017. In 2018, we spent approximately $321.2 million in the Delaware Basin, which was approximately 4% below our 2018 DC&I capital expenditure plan for the Delaware Basin, due to the capital shift discussed above. We currently plan for approximately 41% of our 2019 DC&I capital expenditure plan to be directed towards opportunities in the Delaware Basin.

Additional Oil and Gas Disclosures

Proved Oil and Gas Reserves

The following table sets forth summary information with respect to our estimated proved reserves and PV-10 for the years ended December 31, 2018, 2017 and 2016 that were prepared by Ryder Scott Company, L.P. (“Ryder Scott”), our independent third party reserve engineers. For further information concerning Ryder Scott’s estimates of our proved reserves as of December 31, 2018, see the reserve report included as an exhibit to this Annual Report on Form 10-K.

The prices used in the calculation of our estimated proved reserves and PV-10 were based on the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the year (“12-Month Average Realized Price”) in accordance with SEC rules. The following prices were used in the calculation of estimated proved reserves for the respective years.

	Years Ended December 31,
	2018		2017		2016
Crude oil ($ per Bbl)		$63.80		$49.87		$39.60
NGLs ($ per Bbl)		$26.15		$19.78		$11.66
Natural Gas ($ per Mcf)		$2.46		$2.96		$1.89

For further information concerning the present value of estimated future net revenues from these proved reserves, see “Note 2. Summary of Significant Accounting Policies” and “Note 17. Supplemental Disclosures about Oil and Gas Producing Activities (Unaudited)” of the Notes to our Consolidated Financial Statements. See also “—Other Reserve Matters” below for further discussion.

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The following table summarizes our estimated proved reserves, standardized measure of discounted future net cash flows and PV-10 for the years ended December 31, 2018, 2017 and 2016.

	As of December 31,
	2018			2017			2016
Proved developed reserves
Crude oil (MBbls)	75,267			69,632			51,062
NGLs (MBbls)	25,809			17,447			9,387
Natural Gas (MMcf)	178,941			131,355			187,054
Total proved developed reserves (MBoe)	130,899			108,972			91,625
Proved undeveloped reserves
Crude oil (MBbls)	104,469			97,742			77,256
NGLs (MBbls)	43,314			25,151			14,550
Natural Gas (MMcf)	304,120			179,115			100,391
Total proved undeveloped reserves (MBoe)	198,470			152,745			108,538
Total proved reserves
Crude oil (MBbls)	179,736			167,374			128,318
NGLs (MBbls)	69,123			42,598			23,937
Natural Gas (MMcf)	483,061			310,470			287,445
Total proved reserves (MBoe)	329,369			261,717			200,163
Proved developed reserves %	40		%	42		%	46		%
Proved undeveloped reserves %	60		%	58		%	54		%
Reserve data (In millions):
Standardized measure of discounted future net cash flows (GAAP)		$3,635.6			$2,465.1			$1,303.4
PV-10 (Non-GAAP):
Proved developed PV-10		$2,383.9			$1,621.0			$854.3
Proved undeveloped PV-10	1,707.5			1,017.4			449.1
Total PV-10 (Non-GAAP)		$4,091.4			$2,638.4			$1,303.4

Reconciliation of Standardized Measure of Discounted Future Net Cash Flows (GAAP) to PV-10 (Non-GAAP)

We believe that the presentation of PV-10 provides greater comparability when evaluating oil and gas companies due to the many factors unique to each individual company that impact the amount and timing of future income taxes. In addition, we believe that PV-10 is widely used by investors and analysts as a basis for comparing the relative size and value of our proved reserves to other oil and gas companies. PV-10 should not be considered in isolation or as a substitute for the standardized measure of discounted future net cash flows or any other measure of a company’s financial or operating performance presented in accordance with GAAP. The definition of PV-10 as defined in “Item 1. Business—Glossary of Certain Industry Terms” may differ significantly from the definitions used by other companies to compute similar measures. As a result, PV-10 as defined may not be comparable to similar measures provided by other companies. A reconciliation of the standardized measure of discounted future net cash flows to PV-10 is presented below. Neither PV-10 nor the standardized measure of discounted future net cash flows purport to represent the fair value of our proved oil and gas reserves.

	As of December 31,
	2018		2017		2016
	(In millions)
Standardized measure of discounted future net cash flows (GAAP)		$3,635.6		$2,465.1		$1,303.4
Add: present value of future income taxes discounted at 10% per annum	455.8		173.3		—
PV-10 (Non-GAAP)		$4,091.4		$2,638.4		$1,303.4

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Proved Reserves

The following table provides a summary of the changes in our proved reserves for the year ended December 31, 2018.

	Crude Oil (MBbls)		NGLs (MBbls)		Natural Gas (MMcf)		Total (MBoe)
Proved reserves as of December 31, 2017	167,374		42,598		310,470		261,717
Extensions and discoveries	65,352		30,195		212,758		131,007
Revisions of previous estimates	(31,287	)	1,936		(6,006	)	(30,352	)
Purchases of reserves in place	2,205		967		7,953		4,498
Sales of reserves in place	(9,676	)	(2,872	)	(17,475	)	(15,461	)
Production	(14,232	)	(3,701	)	(24,639	)	(22,040	)
Proved reserves as of December 31, 2018	179,736		69,123		483,061		329,369

Extensions and discoveries of 131,007 MBoe were comprised of 12,687 MBoe of proved developed reserves and 118,320 MBoe of proved undeveloped reserves (“PUDs”) that were added through our drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 30% and 70%, respectively, of the total extensions and discoveries.

Revisions of previous estimates reduced our reserves by 30,352 MBoe. Included in the revisions of previous estimates were the following components;

• Negative revisions of 21,753 MBoe, primarily in the Eagle Ford, due to changes in our previously approved development plan, which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The primary drivers of the changes in our previously approved development plan are the reallocation of capital to areas providing the greatest opportunities to increase capital efficiency and maximize project-level economics within our reduced capital expenditure plan, which includes a shift to larger-scale development projects.

• Net negative revisions of 12,363 MBoe, primarily due to negative revisions of 14,907 MBoe in the Eagle Ford, partially offset by positive revisions of 2,544 MBoe in the Delaware Basin. The negative revisions in the Eagle Ford were primarily a result of completion of new wells that negatively impacted the production of adjacent existing producing wells and the associated impact to certain PUD locations, as well as a reduction in spacing and the average lateral length for certain PUD locations.

• Positive revisions due to price of 3,764 MBoe.

Purchases of reserves in place included 4,498 MBoe of proved developed reserves associated with the Devon Acquisition.

Sales of reserves in place included 13,465 MBoe of proved developed reserves and 1,996 MBoe of proved undeveloped reserves associated with the Eagle Ford and Niobrara Formation divestitures.

Proved Undeveloped Reserves

The following table provides a summary of the changes in our PUDs for the year ended December 31, 2018.

	Crude Oil (MBbls)		NGLs (MBbls)		Natural Gas (MMcf)		Total (MBoe)
PUDs as of December 31, 2017	97,742		25,151		179,115		152,745
Extensions and discoveries	58,373		27,581		194,196		118,320
Removed due to changes in development plan	(15,847	)	(2,686	)	(16,219	)	(21,236	)
Revisions of previous estimates	(9,040	)	2,274		8,980		(5,268	)
Sales of reserves in place	(1,403	)	(289	)	(1,823	)	(1,996	)
Converted to proved developed reserves	(25,356	)	(8,717	)	(60,129	)	(44,095	)
PUDs as of December 31, 2018	104,469		43,314		304,120		198,470

Extensions and discoveries of 118,320 MBoe were due to additional offset locations associated with our drilling program, of which 84,399 MBoe were in the Delaware Basin and 33,921 MBoe were in the Eagle Ford. We incurred $36.6 million during 2018 for certain of these PUD locations that were drilled but uncompleted as of December 31, 2018, with $18.7 million incurred in the Eagle Ford and $17.9 million in the Delaware Basin.

We removed 21,236 MBoe of PUDs, primarily in the Eagle Ford, due to changes in our previously approved development plan, which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The primary drivers of the changes in our previously approved development plan are the reallocation of capital to areas providing the greatest opportunities to increase capital efficiency and maximize project-level economics within our reduced capital expenditure plan, which includes a shift to larger-scale development projects.

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Revisions of previous estimates of 5,268 MBoe included 5,917 MBoe of negative revisions, partially offset by 649 MBoe of positive revisions due to pricing. The negative revisions, of which 4,792 MBoe were in the Eagle Ford, were primarily a result of incorporating the impact to estimated future production for certain PUD locations where future completions are adjacent to the respective PUD location, as well as a reduction in spacing and the average lateral length for certain PUD locations.

Sales of PUDs in place of 1,996 MBoe were related to the sale of a portion of our assets in the Eagle Ford in the first quarter of 2018. We had no PUDs associated with the divestiture in the Niobrara Formation.

We converted 44,095 MBoe of PUDs that were booked as PUDs as of December 31, 2017 to proved developed during 2018, of which 23,181 MBoe were in the Eagle Ford and 20,914 MBoe were in the Delaware Basin, at a total cost of $490.5 million, or $11.12 per Boe.

We converted an additional 10,430 MBoe of PUDs that were booked as PUDs during 2018 to proved developed, and therefore not included in the table above, of which 5,161 MBoe were in the Eagle Ford and 5,269 MBoe in the Delaware Basin. The total cost to convert these PUDs was $126.6 million, or $12.14 per Boe, of which $79.2 million, or $15.35 per Boe, was in the Eagle Ford and $47.4 million, or $9.00 per Boe, was in the Delaware Basin.

During 2018, we also incurred $68.0 million on PUDs that were drilled but uncompleted as of December 31, 2018 that were booked as PUDs as of December 31, 2017, of which $42.7 million was in the Eagle Ford and $25.3 million was in the Delaware Basin. As of December 31, 2018, we had 25,616 MBoe of PUDs associated with wells that were drilled but uncompleted, 14,430 MBoe of which were in the Eagle Ford and 11,186 MBoe in the Delaware Basin. All of the reserves associated with drilled but uncompleted wells are scheduled to be completed in 2019. We expect to incur $212.6 million of capital expenditures to complete these wells, with $154.4 million allocated to the Eagle Ford and $58.2 million allocated to the Delaware Basin.

At December 31, 2018, we did not have any reserves that have remained undeveloped for five or more years since the date of their initial booking and all PUD locations are scheduled to be developed within five years of their initial booking.

Qualifications of Technical Persons

In accordance with the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers and the guidelines established by the Securities and Exchange Commission (“SEC”), Ryder Scott estimated 100% of our proved reserves as of December 31, 2018, 2017, and 2016 as presented in this Annual Report on Form 10-K. The technical persons responsible for preparing the reserves estimates meet the requirements regarding qualifications, independence, objectivity and confidentiality set forth in the Standards Pertaining to Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. Ryder Scott does not own an interest in our properties and is not employed on a contingent fee basis.

Our internal reserve engineers each have over 25 years of experience in the petroleum industry and extensive experience in the estimation of reserves and the review of reserve reports prepared by third party engineering firms. The reserve reports are also reviewed by senior management, including the Chief Executive Officer, who is a registered petroleum engineer and holds a B.S. in Mechanical Engineering and the Chief Operating Officer, who holds a B.S. in Petroleum Engineering.

Internal Controls Over Reserve Estimation Process

The primary inputs to the reserve estimation process are comprised of technical information, financial data, production data, and ownership interests. All field and reservoir technical information, which is updated annually, is assessed for validity when the internal reserve engineers hold technical meetings with our geoscientists, operations, and land personnel to discuss field performance and to validate future development plans. The other inputs used in the reserve estimation process, including, but not limited to, future capital expenditures, commodity price differentials, production costs, and ownership percentages are subject to internal controls over financial reporting and are assessed for effectiveness annually.

Our internal reserve engineers work closely with Ryder Scott to ensure the integrity, accuracy, and timeliness of the data furnished to Ryder Scott for use in their reserves estimation process. Our internal reserve engineers meet regularly with Ryder Scott to review and discuss methods and assumptions used in Ryder Scott’s preparation of the year-end reserves estimates. The internal reserve engineers review the inputs and assumptions made in the reserves estimates prepared by Ryder Scott and assess them for reasonableness.

Specific internal control procedures include, but are not limited to, the following:

• Review by our internal reserve engineers of all of our reported proved reserves at the close of each quarter, including review of all additions to PUD reserves

• Quarterly updates by our senior management to our Board of Directors regarding operational data, including production, drilling and completion activity and any significant changes in our reserves estimates

• Quarterly and annual preparation of a reserve reconciliation that is reviewed by members of our senior management

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• Annual review by our senior management of our year-end reserves estimates prepared by Ryder Scott

• Annual review by our senior management and Board of Directors of our multi-year development plan and approval by the Board of Directors of our capital expenditure plan

• Review by our senior management of changes, if applicable, in our previously approved development plan

Other Reserve Matters

No estimates of proved reserves comparable to those included herein have been included in reports to any federal agency other than the SEC. The reserves data set forth in this Annual Report on Form 10-K represents only estimates. See “Item 1A. Risk Factors—Our reserve data and estimated discounted future net cash flows are estimates based on assumptions that may be inaccurate and are based on existing economic and operating conditions that may change in the future.”

Our future oil and gas production is highly dependent upon our level of success in finding or acquiring additional reserves. See “Item 1A. Risk Factors—We depend on successful exploration, development and acquisitions to maintain reserves and revenue in the future.” Also, the failure of an operator of our wells to adequately perform operations, or such operator’s breach of the applicable agreements, could adversely impact us. See “Item 1A. Risk Factors—We cannot control the activities on properties we do not operate.”

The prices used in calculating the estimated future net revenue attributable to proved reserves do not necessarily reflect market prices for oil and gas production. See “Item 1A. Risk Factors—Our reserve data and estimated discounted future net cash flows are estimates based on assumptions that may be inaccurate and are based on existing economic and operating conditions that may change in the future.” There can be no assurance that all of the proved reserves will be produced and sold within the periods indicated, that the assumed prices will actually be realized for such production or that existing contracts will be honored or judicially enforced.

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Oil and Gas Production, Prices and Costs

The following table sets forth certain information regarding the production volumes, average realized prices and average production costs associated with our sales of crude oil and natural gas for the periods indicated.

	Years Ended December 31,
	2018		2017		2016
Total production volumes
Crude oil (MBbls)	14,232		12,566		9,423
NGLs (MBbls)	3,701		2,327		1,788
Natural gas (MMcf)	24,639		28,472		25,574
Total barrels of oil equivalent (MBoe)	22,040		19,639		15,473
Daily production volumes by product
Crude oil (Bbls/d)	38,992		34,428		25,745
NGLs (Bbls/d)	10,139		6,376		4,885
Natural gas (Mcf/d)	67,503		78,006		69,873
Total barrels of oil equivalent per day (Boe/d)	60,382		53,805		42,276
Daily production volumes by region (Boe/d)
Eagle Ford	37,591		37,825		30,664
Delaware Basin	22,609		6,713		1,115
Other	182		9,267		10,497
Total barrels of oil equivalent (Boe/d)	60,382		53,805		42,276
Average realized prices
Crude oil ($ per Bbl)		$64.05		$50.39		$40.12
NGLs ($ per Bbl)	26.10		20.37		12.54
Natural gas ($ per Mcf)	2.35		2.29		1.69
Total average realized price ($ per Boe)		$48.36		$37.98		$28.67
Average production costs ($ per Boe)
Lease operating expense		$7.33		$7.12		$6.38
Production taxes		$2.30		$1.66		$1.23
Ad valorem taxes		$0.47		$0.37		$0.36
Total average production costs ($ per Boe)		$10.10		$9.15		$7.97

Drilling Activity

The following table sets forth our operated and non-operated drilling activity for the years ended December 31, 2018, 2017 and 2016. In the table, “gross” refers to the total wells in which we have a working interest and “net” refers to gross wells multiplied by our working interest therein. As defined by the SEC, the number of wells drilled refers to the number of wells completed at any time during the respective year, regardless of when drilling was initiated. For definitions of exploratory wells, development wells, productive wells, and non-productive wells, see “—Glossary of Certain Industry Terms”.

	Years Ended December 31,
	2018		2017				2016
	Gross	Net	Gross		Net		Gross	Net
Exploratory Wells - Productive	38	2.5	47	(1)	7.1	(1)	29	4.5
Exploratory Wells - Non-productive	—	—	—		—		—	—
Development Wells - Productive	117	101.8	102	(2)	89.7	(2)	81	73.5
Development Wells - Non-productive	—	—	—		—		—	—

(1) Includes 37 gross (6.3 net) productive exploratory wells which were part of the divestitures of substantially all of our assets in the Utica, Marcellus, and Niobrara, as well as a portion of our assets in the Eagle Ford.

(2) Includes 5 gross (3.8 net) productive development wells which were part of the divestiture of a portion of our assets in the Eagle Ford.

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As of December 31, 2018, we had 80 gross (63.7 net) operated and non-operated wells in various stages of drilling, completion or waiting on completion that are not included in the table above.

Productive Wells

The following table sets forth the number of productive crude oil and natural gas wells in which we owned an interest as of December 31, 2018.

	Crude Oil		Natural Gas		Total
	Gross	Net	Gross	Net	Gross	Net
Eagle Ford - Operated	532	477.6	2	1.8	534	479.4
Eagle Ford - Non-operated	12	2.0	—	—	12	2.0
Total Eagle Ford	544	479.6	2	1.8	546	481.4
Delaware Basin - Operated	54	44.8	30	28.6	84	73.4
Delaware Basin - Non-operated	14	1.9	43	2.1	57	4.0
Total Delaware Basin	68	46.7	73	30.7	141	77.4
Other (1)	—	—	14	0.6	14	0.6
Total	612	526.3	89	33.1	701	559.4

(1) All wells included in Other were non-operated wells.

Acreage Data

The following table sets forth certain information regarding our developed and undeveloped acreage as of December 31, 2018. Developed acreage refers to acreage on which wells have been completed to a point that would permit production of oil and gas in commercial quantities. Undeveloped acreage refers to acreage on which wells have not been drilled or completed to a point that would permit production of oil and gas in commercial quantities whether or not the acreage contains proved reserves.

	Developed  Acreage		Undeveloped Acreage		Total Acreage		Net Undeveloped Acreage Expiring
	Gross	Net	Gross	Net	Gross	Net	2019		2020		2021
Eagle Ford	76,644	63,970	15,126	12,492	91,770	76,462	3,228	(1)	1,499	(1)	—
Delaware Basin	39,533	28,076	30,802	17,928	70,335	46,004	1,760	(2)	11,563	(2)	348	(2)
Other	2,467	404	72,847	42,900	75,314	43,304	2,920	(3)	—		1,234	(3)
Total	118,644	92,450	118,775	73,320	237,419	165,770	7,908		13,062		1,582

(1) Approximately 100% and 68% of the acreage expiring in 2019 and 2020, respectively, will be developed prior to expiration or extended by lease extension payments. We have no current development plans and no proved undeveloped reserves associated with the remaining acreage as of December 31, 2018.

(2) Approximately 73%, 6% and 90% of the acreage expiring in 2019, 2020 and 2021, respectively, will be developed prior to expiration or extended by lease extension payments. The acreage expiring in 2020 is primarily in our Alpine High area where, along with the other remaining acreage, we have no current development plans and no proved undeveloped reserves.

(3) Other includes non-core acreage principally located in Texas, Wyoming, Ohio, and Illinois. We have no current development plans or proved undeveloped reserves associated with this acreage as of December 31, 2018.

Our lease agreements generally terminate if producing wells have not been drilled on the acreage within their primary term or an extension thereof (a period that can be from three to five years depending on the area). The percentage of net undeveloped acreage expiring in 2019, 2020, and 2021 assumes that no producing wells have been drilled on acreage within their primary term or have been extended. We manage our lease expirations to ensure that we do not experience unintended material expirations. Our leasehold management efforts include scheduling drilling in order to hold leases by production or timely exercising our contractual rights to extend the terms of leases by continuous operations or the payment of lease extension payments and delay rentals. We may choose to allow some leases to expire that are no longer part of our development plans.

The proved undeveloped reserves associated with acreage expiring over the next three years are not material to the Company.

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Marketing

Typically, our production is sold at the wellhead to unaffiliated third party purchasers. Crude oil is sold at prices based on posted prices or NYMEX plus or minus market differentials for the respective area. Natural gas and NGLs are sold under contract at a negotiated price which is based on the market price for the area or at published prices for specified locations or pipelines and then discounted by the purchaser back to the wellhead based upon a number of factors normally considered in the industry (such as distance from the well to the central market location, well pressure, quality of natural gas and prevailing supply and demand conditions). Natural gas is generally delivered to a midstream processing entity at the wellhead or the inlet of the midstream processing entity’s system. The midstream processing entity gathers and processes the natural gas and remits proceeds for the resulting sales of NGLs and residue gas. We sell at competitive market prices based on a differential to several market locations. In instances of depressed oil and gas prices, we may elect to shut-in wells until commodity prices are more favorable. We do not believe the loss of any one of our purchasers would materially affect our ability to sell the oil and gas we produce because we believe other purchasers are available in all our areas of operations.

Our marketing objective is to receive competitive wellhead prices for our product. There are a variety of factors that affect the market for oil and gas generally, including:

• demand for oil and gas;

• the extent of supply of oil and gas and, in particular, domestic production and imports;

• the proximity and capacity of natural gas pipelines and other transportation facilities;

• the marketing of competitive fuels; and

• the effects of state and federal regulations on oil and gas production and sales.

See “Item 1A. Risk Factors—Oil and gas prices are highly volatile, and continued low oil and gas prices or further price decreases will negatively affect our financial position, planned capital expenditures and results of operations,” “—We are subject to various environmental risks and governmental regulations, including those relating to benzene emissions, hydraulic fracturing and global climate change, and future regulations may be more stringent resulting in increased operating costs and decreased demand for the oil and gas that we produce,” and “—If our access to markets is restricted, it could negatively impact our production, our income and ultimately our ability to retain our leases. Our ability to sell oil and natural gas and receive market prices for our oil and natural gas may be adversely affected by pipeline and gathering system capacity constraints.”

We work with various pipeline companies to procure and to assure capacity for our natural gas. For further discussion of this matter, see “Item 1A. Risk Factors—If our access to markets is restricted, it could negatively impact our production, our income and ultimately our ability to retain our leases. Our ability to sell oil and natural gas and receive market prices for our oil and natural gas may be adversely affected by pipeline and gathering system capacity constraints.” We have entered into various long-term gathering, processing, and transportation contracts with various parties which require us to deliver fixed, determinable quantities of production over specified periods of time. Certain of these contracts require us to make payments for any shortfalls in delivering or transporting minimum volumes under these commitments. As of the filing of this report, we do not expect any material shortfalls in our delivery commitments. See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Contractual Obligations” and “Note 8. Commitments and Contingencies” of the Notes to our Consolidated Financial Statements for further discussion.

Competition and Technological Changes

We encounter competition from other oil and gas companies in all areas of our operations, including the acquisition of exploratory prospects and proven properties, obtaining necessary equipment, supplies and services, and recruiting and retaining skilled employees. Many of our competitors are large, well-established companies that have been engaged in the oil and gas business for much longer than we have and possess substantially larger operating staffs and greater capital resources than we do. We may not be able to conduct our operations, evaluate and select suitable properties and consummate transactions successfully in this highly competitive environment.

The oil and gas industry is characterized by rapid and significant technological advancements and introductions of new products and services using new technologies. If one or more of the technologies we use now or in the future were to become obsolete or if we are unable to use the most advanced commercially available technology, our business, financial condition and results of operations could be materially adversely affected.

Regulation

Oil and gas operations are subject to various federal, state, local and international environmental regulations that may change from time to time, including regulations governing oil and gas production and transportation, federal and state regulations governing

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environmental quality and pollution control and state limits on allowable rates of production by well or proration unit. These regulations may affect the amount of oil and gas available for sale, the availability of adequate pipeline and other regulated processing and transportation facilities and the marketing of competitive fuels. For example, a productive natural gas well may be “shut-in” because of an oversupply of natural gas or lack of an available natural gas pipeline in the areas in which we may conduct operations. State and federal regulations generally are intended to prevent waste of oil and gas, protect rights to produce oil and gas between owners in a common reservoir, control the amount of oil and gas produced by assigning allowable rates of production, provide nondiscriminatory access to common carrier pipelines and control contamination of the environment. Pipelines are subject to the jurisdiction of various federal, state and local agencies. We are also subject to changing and extensive tax laws, the effects of which cannot be predicted.

The following discussion summarizes the regulation of the United States oil and gas industry. We believe we are in substantial compliance with the various statutes, rules, regulations and governmental orders to which our operations may be subject, although we cannot assure you that this is or will remain the case. Moreover, those statutes, rules, regulations and government orders may be changed or reinterpreted from time to time in response to economic or political conditions, and any such changes or reinterpretations could materially adversely affect our results of operations and financial condition. The following discussion is not intended to constitute a complete discussion of the various statutes, rules, regulations and governmental orders to which our operations may be subject.

Regulation of Natural Gas and Oil Exploration and Production

Our operations are subject to various types of regulation at the federal, state and local levels that:

• require permits for the drilling of wells;

• mandate that we maintain bonding requirements in order to drill or operate wells; and

• regulate the location of wells, the method of drilling and casing wells, the surface use and restoration of properties upon which wells are drilled, groundwater sampling requirements prior to drilling, the plugging and abandoning of wells and the disposal of fluids used in connection with operations.

Our operations are also subject to various conservation laws and regulations. These regulations govern the size of drilling and spacing units or proration units, setback rules, the density of wells that may be drilled in oil and gas properties and the unitization or pooling of oil and gas properties. In this regard, some states allow the forced pooling or integration of tracts to facilitate exploration while other states (including Texas) rely primarily or exclusively on voluntary pooling of lands and leases. In areas where pooling is primarily or exclusively voluntary, it may be more difficult to form units and therefore more difficult to develop a project if the operator owns less than 100% of the leasehold. In addition, state conservation laws that establish maximum rates of production from oil and gas wells generally prohibit the venting or flaring of natural gas and impose specified requirements regarding the ratability of production. The effect of these regulations may limit the amount of oil and gas we can produce from our wells and may limit the number of wells or the locations at which we can drill. The regulatory burden on the oil and gas industry increases our costs of doing business and, consequently, affects our profitability. Because these laws and regulations are frequently expanded, amended and reinterpreted, we are unable to predict the future cost or impact of complying with such regulations.

Regulation of Sales and Transportation of Natural Gas

Federal legislation and regulatory controls have historically affected the price of natural gas we produce and the manner in which our production is transported and marketed. Under the Natural Gas Act of 1938 (“NGA”), the Federal Energy Regulatory Commission (“FERC”) regulates the interstate transportation and the sale in interstate commerce for resale of natural gas. Effective January 1, 1993, the Natural Gas Wellhead Decontrol Act (the “Decontrol Act”) deregulated natural gas prices for all “first sales” of natural gas, including all of our sales of our own production. As a result, all of our domestically produced natural gas is sold at market prices, subject to the terms of any private contracts that may be in effect. The FERC’s jurisdiction over interstate natural gas transportation, however, was not affected by the Decontrol Act.

Under the NGA, facilities used in the production or gathering of natural gas are exempt from the FERC’s jurisdiction. We own certain natural gas pipelines that we believe satisfy the FERC’s criteria for establishing that these are all gathering facilities not subject to FERC jurisdiction under the NGA. State regulation of gathering facilities generally includes various safety, environmental, and in some circumstances, nondiscriminatory take requirements and complaint-based rate regulation.

One of our pipeline subsidiaries, Hondo Pipeline Inc., may exercise the power of eminent domain and is a regulated public utility within the meaning of Section 101.003 (“GURA”) and Section 121.001 (the “Cox Act”) of the Texas Utilities Code. Both GURA and the Cox Act prohibit unreasonable discrimination in the transportation of natural gas and authorize the Texas Railroad Commission to regulate gas transportation rates. However, GURA provides for negotiated rates with transportation, industrial or similar large-volume contract customers so long as neither party has an unfair negotiating advantage, the negotiated rate is

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substantially the same as that negotiated with at least two other customers under similar conditions, or sufficient competition existed when the rate was negotiated.

Although we do not own or operate any pipelines or facilities that are directly regulated by the FERC, its regulations of third-party pipelines and facilities could indirectly affect our ability to market our production. Beginning in the 1980s, the FERC initiated a series of major restructuring orders that required pipelines, among other things, to perform open access transportation, “unbundle” their sales and transportation functions, and allow shippers to release their pipeline capacity to other shippers. As a result of these changes, sellers and buyers of natural gas have gained direct access to the particular pipeline services they need and are better able to conduct business with a larger number of counterparties. We believe these changes generally have improved our access to markets while, at the same time, substantially increasing competition in the natural gas marketplace. It remains to be seen, however, what effect the FERC’s other activities will have on access to markets, the fostering of competition and the cost of doing business. We cannot predict what new or different regulations the FERC and other regulatory agencies may adopt, or what effect subsequent regulations may have on our activities.

In the past, Congress has been very active in the area of natural gas regulation. However, the more recent trend has been in favor of deregulation or “lighter handed” regulation and the promotion of competition in the gas industry. In light of this increased reliance on competition, the Energy Policy Act of 2005 amended the NGA to prohibit any forms of market manipulation in connection with the transportation, purchase or sale of natural gas. In addition to the regulations implementing these prohibitions, the FERC has established new regulations that are intended to increase natural gas pricing transparency through, among other things, expanded dissemination of information about the availability and prices of gas sold and new regulations that require both interstate pipelines and certain non-interstate pipelines to post daily information regarding their design capacity and daily scheduled flow volumes at certain points on their systems. The Energy Policy Act of 2005 also significantly increased the penalties for violations of the NGA and the FERC’s regulations to up to $1.0 million per day for each violation. This maximum penalty authority established by statute has been and will continue to be adjusted periodically to account for inflation.

Oil Price Controls and Transportation Rates

Our sales of crude oil, condensate and NGLs are not currently regulated and are made at market prices. The price we receive from the sale of these products may be affected by the cost of transporting the products to market. Much of that transportation is through interstate common carrier pipelines. Effective as of January 1, 1995, the FERC implemented regulations generally grandfathering all previously approved interstate transportation rates and establishing an indexing system for those rates by which adjustments are made annually based on the rate of inflation, subject to specified conditions and limitations. These regulations may tend to increase the cost of transporting crude oil and NGLs by interstate pipeline, although the annual adjustments may result in decreased rates in a given year. Every five years, the FERC must examine the relationship between the annual change in the applicable index and the actual cost changes experienced in the oil pipeline industry. In December 2015, to implement the latest required five-yearly re-determination, the FERC established an upward adjustment in the index to track oil pipeline cost changes. For the five-year period beginning July 1, 2016, FERC established an annual index adjustment equal to the change in the producer price index for finished goods plus 1.23%. Under FERC’s regulations, liquids pipelines can request a rate increase that exceeds the rate obtained through application of the indexing methodology by using a cost-of-service approach, but only after the pipeline establishes that a substantial divergence exists between the actual costs experienced by the pipeline and the rates resulting from application of the indexing methodology. We are not able at this time to predict the effects of this indexing system or any new FERC regulations on the transportation costs associated with oil production from our oil producing operations.

There regularly are legislative proposals pending in the federal and state legislatures which, if enacted, would significantly affect the petroleum industry. At the present time, it is impossible to predict what proposals, if any, might actually be enacted by Congress or the various state legislatures and what effect, if any, such proposals might have on us. Similarly, we cannot predict whether or to what extent the trend toward federal deregulation of the petroleum industry will continue, or what the ultimate effect on our sales of oil, gas and other petroleum products will be.

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Environmental Regulations

Our operations are subject to numerous international, federal, state and local laws and regulations governing the discharge of materials into the environment or otherwise relating to environmental protection. These laws and regulations may require the acquisition of a permit before drilling commences, restrict the types, quantities and concentration of various substances that can be released into the environment in connection with drilling and production activities, limit or prohibit drilling activities on specified lands within wilderness, wetlands and other protected areas, require remedial measures to mitigate pollution from former operations, such as pit closure and plugging abandoned wells, and impose substantial liabilities for pollution resulting from production and drilling operations. The failure to comply with these laws and regulations may result in the assessment of administrative, civil and criminal penalties, imposition of investigatory or remedial obligations or the issuance of injunctions prohibiting or limiting the extent of our operations. Public interest in the protection of the environment has increased dramatically in recent years. The trend of applying more expansive and stricter environmental legislation and regulations to the oil and gas industry could continue, resulting in increased costs of doing business and consequently affecting our profitability. To the extent laws are enacted or other governmental action is taken that restricts drilling or imposes more stringent and costly waste handling, disposal and cleanup requirements, our business and prospects could be adversely affected.

We currently own or lease numerous properties that for many years have been used for the exploration and production of oil and gas. Although we believe that we have generally implemented appropriate operating and waste disposal practices, prior owners and operators of these properties may not have used similar practices, and hydrocarbons or other waste may have been disposed of or released on or under the properties we own or lease or on or under locations where such waste has been taken for disposal. In addition, many of these properties have been operated by third parties whose treatment and disposal or release of hydrocarbons or other waste was not under our control. These properties and the waste disposed thereon may be subject to the federal Resource Conservation and Recovery Act (“RCRA”), the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”), and analogous state laws as well as state laws governing the management of oil and gas waste. Under these laws, we could be required to remove or remediate previously disposed waste (including waste disposed of or released by prior owners or operators) or property contamination (including groundwater contamination) or to perform remedial plugging operations to prevent future contamination.

We generate waste that may be subject to RCRA and comparable state statutes. The U.S. Environmental Protection Agency (the “EPA”) and various state agencies have limited the approved methods of disposal for certain hazardous and nonhazardous waste. Furthermore, certain waste generated by our oil and gas operations that are currently exempt from treatment as “hazardous waste” may in the future be designated as “hazardous waste” and therefore become subject to more rigorous and costly operating and disposal requirements.

CERCLA, also known as the “Superfund” law, and analogous state laws impose liability, without regard to fault or the legality of the original conduct, on specified classes of persons that are considered to have contributed to the release of a “hazardous substance” into the environment. These classes of persons include the owner or operator of the disposal site or sites where the release occurred and companies that disposed or arranged for the disposal of the hazardous substances found at the site. Persons who are or were responsible for releases of hazardous substances under CERCLA may be subject to joint and several liability for the costs of cleaning up the hazardous substances that have been released into the environment, for damages to natural resources and for the costs of certain health studies. It is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by the hazardous substances released into the environment.

Our operations may be subject to the Clean Air Act and comparable state and local requirements. In 1990 Congress adopted amendments to the Clean Air Act containing provisions that have resulted in the gradual imposition of certain pollution control requirements with respect to air emissions from our operations. The EPA and states have developed and continue to develop regulations to implement these requirements. We may be required to incur certain capital expenditures in the next several years for air pollution control equipment in connection with maintaining or obtaining operating permits and approvals addressing other air emission-related issues. Moreover, changes in environmental laws and regulations occur frequently, and stricter laws, regulations or enforcement policies could significantly increase our compliance costs. Further, stricter requirements could negatively impact our production and operations. For example, on October 1, 2015, the EPA released a final rule tightening the primary and secondary NAAQS for ground-level ozone from its 2008 standard levels of 75 parts per billion (“ppb”) to 70 ppb. None of the Texas counties in which we operate have been designated by the EPA as nonattainment areas under this revised standard. However, areas in which we operate could be designated as nonattainment in the future if the EPA were to further reduce ozone standards. States that contain any areas designated nonattainment, and any tribes that choose to do so, are required to develop state implementation plans demonstrating how the area will attain the standard within a prescribed period of time. These plans may require the installation of additional equipment to control emissions. Similar initiatives could lead to more stringent air permitting, increased regulation and possible enforcement actions at the local, state, and federal levels.

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Additionally, the EPA has established new air emission control requirements for natural gas and NGLs production, processing and transportation activities, including New Source Performance Standards to address emissions of sulfur dioxide and volatile organic compounds, and National Emission Standards for Hazardous Air Pollutants (“NESHAPS”) to address hazardous air pollutants frequently associated with gas production and processing activities. Among other things, these rules require the reduction of volatile organic compound emissions from natural gas wells through the use of reduced emission completions or “green completions” on all hydraulically fractured wells constructed or refractured after January 1, 2015. In addition, gas wells are required to use completion combustion device equipment (i.e., flaring) by October 15, 2012 if emissions cannot be directed to a gathering line. Further, the final rules under NESHAPS include maximum achievable control technology (“MACT”) standards for “small” glycol dehydrators that are located at major sources of hazardous air pollutants and modifications to the leak detection standards for valves. In June 2016, the EPA published updates to new source performance standard requirements that would impose more stringent controls on methane and volatile organic compounds emissions from oil and gas development and production operations, including hydraulic fracturing and other well completion activity. In October 2018, the EPA published a proposed rule that would amend certain requirements of the June 2016 rule. Among other things, the proposed rule would reduce monitoring frequencies for fugitive emissions and clarify and streamline certain other requirements. However, the 2016 rule currently remains in effect. Similarly in November 2016, the Bureau of Land Management (“BLM”) issued rules requiring additional efforts by producers to reduce venting, flaring, and leaking of natural gas produced on federal and Native American lands. In February 2018, the BLM proposed to repeal certain requirements of the 2016 rules. In September 2018, BLM published a final rule that largely adopted the February 2018 proposal and rescinded several requirements. The September 2018 rule was challenged in the U.S. District Court for the Northern District of California almost immediately after issuance. The challenge is still pending. Compliance with the November 2016 rule or the revised September 2018 rule may require modifications to certain of our operations, including the installation of new equipment to control emissions at the well site that could result in significant costs, including increased capital expenditures and operating costs, and could adversely impact our business.

Federal regulations require certain owners or operators of facilities that store or otherwise handle oil, such as us, to prepare and implement spill prevention, control, countermeasure and response plans relating to the possible discharge of oil into surface waters. The Oil Pollution Act of 1990 (“OPA”) contains numerous requirements relating to the prevention of and response to oil spills into waters of the United States. The OPA subjects owners and operators of facilities to strict joint and several liability for all containment and cleanup costs and certain other damages arising from a spill, including, but not limited to, the costs of responding to a release of oil to surface waters. The OPA also requires owners and operators of offshore facilities that could be the source of an oil spill into federal or state waters, including wetlands, to post a bond, letter of credit or other form of financial assurance in amounts ranging from $10.0 million in specified state waters to $35.0 million in federal outer continental shelf waters to cover costs that could be incurred by governmental authorities in responding to an oil spill. These financial assurances may be increased by as much as $150.0 million if a formal risk assessment indicates that the increase is warranted. Noncompliance with OPA may result in varying civil and criminal penalties and liabilities.

Our operations are also subject to the federal Clean Water Act (“CWA”) and analogous state laws that impose restrictions and strict controls regarding the discharge of pollutants into state waters as well as U.S. waters. Pursuant to the requirements of the CWA, the EPA has adopted regulations concerning discharges of storm water runoff. This program requires covered facilities to obtain individual permits or seek coverage under an EPA general permit. Like OPA, the CWA and analogous state laws relating to the control of water pollution provide varying civil and criminal penalties and liabilities for releases of petroleum or its derivatives into surface waters or into the ground. Similarly, the U.S. Congress has considered legislation to subject hydraulic fracturing operations to federal regulation and to require the disclosure of chemicals used by us and others in the oil and gas industry in the hydraulic fracturing process. Please read “Item 1A. Risk Factors-We are subject to various environmental risks and governmental regulations, including those relating to benzene emissions, hydraulic fracturing and global climate change, and future regulations may be more stringent resulting in increased operating costs and decreased demand for the oil and gas that we produce.”

The Endangered Species Act (“ESA”) restricts activities that may affect endangered or threatened species or their habitats. Some of our operations are located in or near areas that may be designated as habitats for endangered or threatened species, such as the Attwater’s prairie chicken. In these areas, we may be obligated to develop and implement plans to avoid potential adverse effects to protected species and their habitats, and we may be prohibited from conducting operations in certain locations or during certain seasons, such as breeding and nesting seasons, when our operations could have an adverse effect on the species. It is also possible that a federal or state agency could restrict drilling activities in certain locations if it is determined that such activities may have a serious adverse effect on a protected species. The presence of a protected species in areas where we operate could result in increased costs of or limitations on our ability to perform operations and thus have an adverse effect on our business. We believe that we are in substantial compliance with the ESA, and we are not aware of any proposed listings that will affect our operations. However, the designation of previously unidentified endangered or threatened species could cause us to incur additional costs or become subject to operating restrictions or bans in the affected states.

The Safe Drinking Water Act (“SDWA”) and comparable local and state provisions restrict the disposal, treatment or release of water produced or used during oil and gas development. Subsurface emplacement of fluids (including disposal wells or enhanced

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oil recovery) is governed by federal or state regulatory authorities that, in some cases, includes the state oil and gas regulatory authority or the state’s environmental authority. These regulations may increase the costs of compliance for some facilities. We believe that we substantially comply with the SDWA and related state provisions.

We also are subject to a variety of federal, state, local and foreign permitting and registration requirements relating to protection of the environment. We believe we are in substantial compliance with current applicable environmental laws and regulations and that continued compliance with existing requirements will not have a material adverse effect on our financial position or results of operations.

Global Climate Change

There is increasing attention in the United States and worldwide being paid to the issue of climate change and the contributing effect of greenhouse gas (“GHG”) emissions. The EPA has adopted regulations under existing provisions of the federal Clean Air Act that, among other things, regulates GHG emissions from certain large stationary sources under the Clean Air Act Prevention of Significant Deterioration (“PSD”) and Title V permitting programs. Facilities required to obtain PSD permits for their GHG emissions also will be required to meet “best available control technology” standards, which will be established by the states or, in some instances, by the EPA on a case-by-case basis. The EPA also expanded its existing GHG emissions reporting rule to apply to the oil and gas source category, including oil and natural gas production facilities and natural gas processing, transmission, distribution and storage facilities. Facilities containing petroleum and natural gas systems that emit 25,000 metric tons or more of CO2 equivalent per year were required to report annual GHG emissions to the EPA, for the first time by September 28, 2012. In addition, in June 2016, the EPA published updates to new source performance standard requirements that would impose more stringent controls on methane and volatile organic compounds emissions from oil and gas development and production operations, including hydraulic fracturing and other well completion activity. In October 2018, the EPA published a proposed rule that would amend certain requirements of the June 2016 rule. Among other things, the proposed rule would reduce monitoring frequencies for fugitive emissions and clarify and streamline certain other requirements. However, the 2016 rule currently remains in effect.

The U.S. Congress has considered a number of legislative proposals to restrict GHG emissions and more than 20 states, either individually or as part of regional initiatives, have begun taking actions to control or reduce GHG emissions. Efforts have been made and continue to be made in the international community toward the adoption of international treaties or protocols that would address global climate change issues. In April 2016, the United States signed the Paris Agreement, which requires countries to review and “represent a progression” in their intended nationally determined contributions, which set GHG emission reduction goals, every five years beginning in 2020. However, in August of 2017, the United States informed the United Nations of its intent to withdraw from the Paris Agreement. The earliest possible effective withdrawal date from the Paris Agreement is November 2020.

While it is not possible at this time to predict how regulation that may be enacted to address GHG emissions would impact our business, the modification of existing laws or regulations or the adoption of new laws or regulations curtailing oil and gas exploration in the areas of the United States in which we operate could materially and adversely affect our operations by limiting drilling opportunities or imposing materially increased costs. In addition, existing or new laws, regulations or treaties (including incentives to conserve energy or use alternative energy sources) could have a negative impact on our business if such incentives reduce demand for oil and gas.

In addition to the effects of future regulation, the meteorological effects of global climate change could pose additional risks to our operations in the form of more frequent and/or more intense storms and flooding, which could in turn adversely affect our cost of doing business.

Title to Properties

We believe we currently have satisfactory title to all of our producing properties in the specific areas in which we operate in accordance with standards generally accepted in the oil and gas industry, except where failure to do so would not have a material adverse effect on our business and operations in such area, taken as a whole. Individual properties may be subject to burdens such as royalty and overriding royalty interests, working and other outstanding interests customary in the industry. Additionally, substantially all of our producing properties are subject to mortgage liens securing our obligations under our senior secured revolving credit facility. For additional information, please see “Item 1A. Risk Factors—We may incur losses as a result of title deficiencies.”

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Customers

The following table presents customers that represented 10% or more of our total revenues for at least one of the periods presented:

	Years Ended December 31,
	2018	2017	2016
Shell Trading (US) Company	73%	69%	56%
Flint Hills Resources, LP	*	*	15%

* - Less than 10% for the respective year.

We do not believe the loss of any one of our purchasers would materially affect our ability to sell the crude oil and natural gas we produce as other purchasers are available in our primary areas of activity. See “Additional Oil and Gas Disclosures—Marketing.”

Employees

At December 31, 2018, we had 239 full-time employees. None of our employees are subject to a collective bargaining agreement, and we consider our relations with our employees to be good.

We regularly use independent contractors and consultants to perform various field and other services.

Available Information

Our website can be accessed at www.carrizo.com. We make our website content available for informational purposes only. It should not be relied upon for investment purposes, nor is it incorporated by reference in this Form 10-K. Within our website’s investor relations section, we make available free of charge our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K, including exhibits and amendments to these reports, as soon as reasonably practicable after we electronically file such material with, or furnish such material to, the SEC. Reports filed with the SEC are made available on its website at www.sec.gov.We also make available through our website information related to our corporate governance including the following:

• Audit Committee Charter;

• Compensation Committee Charter;

• Nominating and Corporate Governance Committee Charter;

• Code of Ethics and Business Conduct; and

• Compliance Employee Report Line.

We intend to satisfy the requirement under Item 5.05 of Form 8-K to disclose any amendments to our Code of Ethics and Business Conduct and any waiver from a provision of our Code of Ethics by posting such information on our website at www.carrizo.com under “About—Governance.”

Glossary of Certain Industry Terms

The definitions set forth below shall apply to the indicated terms as used herein.

3-D seismic data. Three-dimensional pictures of the subsurface created by collecting and measuring the intensity and timing of sound waves transmitted into the earth as they reflect back to the surface.

Bbl. One stock tank barrel, or 42 U.S. gallons liquid volume, used herein in reference to oil or other liquid hydrocarbons.

Bbls/d. Stock tank barrels per day.

Boe. Barrels of oil equivalent. A Boe is determined using the ratio of 6 Mcf of natural gas to one Bbl of oil or NGLs which approximates their relative energy content.

Boe/d. Barrels of oil equivalent per day.

Btu or British Thermal Unit. The quantity of heat required to raise the temperature of a one-pound mass of water by one degree Fahrenheit.

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Completion. The process of treating a drilled well followed by the installation of permanent equipment for the production of oil, NGLs or natural gas, or in the case of a dry well, the reporting of abandonment to the appropriate authority.

Condensate. Condensate is a mixture of hydrocarbons that exists in the gaseous phase at original reservoir temperature and pressure, but that, when produced, is in the liquid phase at surface pressure and temperature.

Developed acreage. The number of acres allocated or assignable to productive wells or wells capable of production.

Developed oil and gas reserves. Reserves of any category that can be expected to be recovered (i) through existing wells with existing equipment and operating methods or for which the cost of the required equipment is relatively minor compared to the cost of a new well, and (ii) through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is by means not involving a well.

Development costs. Costs incurred to obtain access to proved reserves and to provide facilities for extracting, treating, gathering and storing the oil and gas. Development costs, including depreciation and applicable operating costs of support equipment and facilities and other costs of development activities, are costs incurred to (i) gain access to and prepare well locations for drilling, including surveying well locations for the purpose of determining specific development drilling sites, clearing ground, draining, road building and relocating public roads, gas lines and power lines, to the extent necessary in developing the proved reserves, (ii) drill and equip development wells, development-type stratigraphic test wells and service wells, including the costs of platforms and of well equipment such as casing, tubing, pumping equipment, and the wellhead assembly, (iii) acquire, construct and install, production facilities such as lease flow lines, separators, treaters, heaters, manifolds, measuring devices and production storage tanks, natural gas cycling and processing plants, and central utility and waste disposal systems, and (iv) provide improved recovery systems.

Development well. A well drilled within the proved area of an oil or natural gas reservoir to the depth of a stratigraphic horizon known to be productive.

Dry well. An exploratory, development or extension well that proves to be incapable of producing either oil or gas in sufficient quantities to justify completion as an oil or gas well.

Economically producible. A resource which generates revenue that exceeds, or is reasonably expected to exceed, the costs of the operation. The value of the products that generate revenue shall be determined at the terminal point of “oil and gas producing activities” as defined in Rule 4-10(a)(16) of Regulation S-X promulgated under the Securities Exchange Act of 1934, as amended.

Estimated ultimate recovery (EUR). Estimated ultimate recovery is the sum of reserves remaining as of a given date and cumulative production as of that date.

Exploratory well. A well drilled to find a new field or to find a new reservoir in a field previously found to be productive of oil or gas in another reservoir.

Field. An area consisting of a single reservoir or multiple reservoirs all grouped on or related to the same individual geological structural feature or stratigraphic condition, or both. The geological terms “structural feature” and “stratigraphic condition” are intended to identify localized geological features as opposed to the broader terms of basins, trends, provinces, plays, areas of interest, etc.

Gross acres or gross wells. The total acres or wells, as the case may be, in which a working interest is owned.

Hydraulic fracturing. Hydraulic fracturing is a well stimulation process using a liquid (usually water with an amount of chemicals mixed in) that is forced into an underground formation under high pressure to open or enlarge fractures in reservoirs with low permeability to stimulate and improve the flow of hydrocarbons from these reservoirs. As the formation is fractured, a proppant (usually sand or ceramics) is pumped into the fractures to “prop” or keep them from closing after they are opened by the liquid. Hydraulic fracturing is a technology used in shale reservoirs and other unconventional resource plays in order to enable commercial hydrocarbon production.

MBbls. Thousand barrels of oil or other liquid hydrocarbons.

MBoe. Thousand barrels of oil equivalent.

Mcf. Thousand cubic feet of natural gas.

Mcf/d. Thousand cubic feet of natural gas per day.

MMBbls. Million barrels of oil or other liquid hydrocarbons.

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MMBoe. Million barrels of oil equivalent.

MMBtu. Million British Thermal Units.

MMcf. Million cubic feet of natural gas.

Net acres or net wells. The sum of the fractional working interests owned in gross acres or gross wells.

Non-productive well. A well that is found to be incapable of producing oil or gas in sufficient quantities to justify completion, or upon completion, the economic operation of an oil or gas well.

NYMEX. New York Mercantile Exchange.

Production costs. Costs incurred to operate and maintain wells and related equipment and facilities, including depreciation and applicable operating costs of support equipment and facilities and other costs of operating and maintaining those wells and related equipment and facilities.

Productive well. A well that is found to be capable of producing oil or gas in sufficient quantities to justify completion as an oil or gas well.

Proved developed reserves. Reserves that can be expected to be recovered through existing wells with existing equipment and operating methods.

Proved reserves. Has the meaning given to such term in Rule 4-10(a)(22) of Regulation S-X, which defines proved reserves as:

The quantities of oil and gas which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations, prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time.

The area of a reservoir considered proved includes (i) the area identified by drilling and limited by fluid contacts, if any, and (ii) adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geoscience and engineering data.

In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons as seen in a well penetration unless geoscience, engineering or performance data and reliable technology establish a lower contact with reasonable certainty.

Where direct observation from well penetrations has defined a highest known oil elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering or performance data and reliable technology establish the higher contact with reasonable certainty.

Reserves that can be produced economically, based on prices used to estimate reserves, through application of improved recovery techniques (including, but not limited to, fluid injection) are included in the proved classification when (i) successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir, or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was based and (ii) the project has been approved for development by all necessary parties and entities, including governmental entities.

Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon future conditions.

Proved undeveloped oil and gas reserves or PUDs. Reserves that are expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion.

(i) Reserves on undrilled acreage are limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility, based on pricing used to estimate reserves, at greater distances.

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(ii) Undrilled locations are classified as having proved undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances justify a longer time.

(iii) Under no circumstances are estimates for proved undeveloped reserves attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir or by other evidence using reliable technology establishing reasonable certainty.

PV-10 (Non-GAAP). The present value of estimated future revenue to be generated from the production of estimated net proved reserves, net of estimated production and future development costs, based on prices used in estimating the proved reserves and costs in effect as of the date indicated (unless such costs are subject to change pursuant to contractual provisions), without giving effect to non-property related expenses such as general and administrative expenses, debt service, future income tax expenses, or depreciation, depletion, and amortization, discounted using an annual discount rate of 10 percent. While this measure does not include the effect of income taxes as it would in the use of the standardized measure of discounted future net cash flows calculation, it does provide an indicative representation of the relative value of the Company on a comparative basis to other companies and from period to period. This is a non-GAAP measure. See “Item 1. Business—Additional Oil and Gas Disclosures—Reconciliation of Standardized Measure of Discounted Future Net Cash Flows (GAAP) to PV-10 (Non-GAAP)”.

Reasonable certainty. If deterministic methods are used, reasonable certainty means a high degree of confidence that the quantities will be recovered. If probabilistic methods are used, there should be at least a 90% probability that the quantities actually recovered will equal or exceed the estimate. A high degree of confidence exists if the quantity is much more likely to be achieved than not, and, as changes due to increased availability of geoscience (geological, geophysical, and geochemical), engineering, and economic data are made to EUR with time, reasonably certain EUR is much more likely to increase or remain constant than to decrease.

Recompletion. The completion for production of an existing well bore in another formation from that in which the well has been previously completed.

Reserves. Estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations. In addition, there must exist, or there must be a reasonable expectation that there will exist, the legal right to produce or a revenue interest in the production, installed means of delivering oil and gas or related substances to market, and all permits and financing required to implement the project.

Reservoir. A porous and permeable underground formation containing a natural accumulation of producible oil or gas, or both, that is confined by impermeable rock or water barriers and is individual and separate from other reservoirs.

Standardized measure. The present value, discounted at 10%, of future net cash flows from estimated proved reserves after income taxes, calculated holding prices and costs constant at amounts in effect on the date of the report (unless such prices or costs are subject to change pursuant to contractual provisions) and otherwise in accordance with the U.S. Securities Exchange Commission’s rules for inclusion of oil and gas reserve information in financial statements filed with the U.S. Securities Exchange Commission.

Undeveloped acreage. Lease acreage on which wells have not been drilled or completed to a point that would permit the production of economic quantities of oil or gas regardless of whether such acreage contains proved reserves.

Working interest. The operating interest that gives the owner the right to drill, produce and conduct operating activities on the property and a share of production.

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Item 1A. Risk Factors

Oil and gas prices are highly volatile, and low oil and gas prices or further price decreases will negatively affect our financial position, planned capital expenditures and results of operations.

Our revenue, profitability, cash flow, future growth and ability to borrow funds or obtain additional capital, as well as the carrying value of our properties, are substantially dependent on prevailing prices of oil and gas. Historically, the markets for oil and gas have been volatile, and those markets are likely to continue to be volatile in the future. Oil and gas commodity prices are affected by events beyond our control, including changes in market supply and demand, overall economic activity, weather, pipeline capacity constraints, inventory storage levels, basis differentials and other factors. In the past, we have reduced or curtailed activity to mitigate the impact of low oil and gas prices. Particularly in recent years, decreases in both oil and gas prices led us to suspend or curtail drilling and other exploration activities, which will limit our ability to produce oil and gas and therefore impact our revenues. We are particularly dependent on the production and sale of oil and this commodity price decline has had, and may continue to have, an adverse effect on us. Further volatility in oil and gas prices or a continued prolonged period of low oil or gas prices may materially adversely affect our financial position, liquidity (including our borrowing capacity under our revolving credit facility), ability to finance planned capital expenditures and results of operations.

It is impossible to predict future oil and gas price movements with certainty. Prices for oil and gas are subject to wide fluctuation in response to relatively minor changes in the supply of and demand for oil and gas, market uncertainty and a variety of additional factors beyond our control. These factors include, but are not limited to:

• the level of consumer product demand;

• the levels and location of oil and gas supply and demand and expectations regarding supply and demand, including the supply of oil and natural gas due to increased production from resource plays;

• overall economic conditions;

• weather conditions;

• domestic and foreign governmental relations, regulations and taxes;

• the price and availability of alternative fuels;

• political conditions or hostilities and unrest in oil producing regions;

• the level and price of foreign imports of oil and liquefied natural gas;

• the ability of the members of the Organization of Petroleum Exporting Countries and other exporting nations to agree upon and maintain production constraints and oil price controls;

• the extent to which U.S. shale producers become “swing producers” adding or subtracting to the world supply;

• technological advances affecting energy consumption;

• speculation by investors in oil and gas; and

• variations between product prices at sales points and applicable index prices.

The profitability of wells, particularly in the shale plays in which we primarily operate, is generally reduced or eliminated as commodity prices decline. In addition, certain wells that are profitable may not meet our internal return targets. Based on our current estimates of drilling and completion costs, ultimate recoveries per well, differentials and operating costs, we believe a portion of our acreage if drilled would not be economical at commodity prices existing in 2018. There can be no assurance, however, that any wells, including wells drilled on our Eagle Ford and Delaware Basin acreage, will actually be profitable at any estimated prices. The sustained declines in commodity prices have caused us to significantly reduce our exploration and development activity which may adversely affect our results of operations, cash flows and our business.

Oil and gas drilling is a speculative activity and involves numerous risks and substantial and uncertain costs that could adversely affect us.

Our success will be largely dependent upon the success of our drilling program. We acquire unproved properties and lease undeveloped acreage that we believe will enhance our growth potential and increase our earnings over time. However, we cannot assure you that all prospects will be economically viable or that we will not abandon our investments.

Drilling for oil and gas involves numerous risks, including the risk that no commercially productive oil or gas reservoirs will be discovered. The cost of drilling, completing and operating wells is substantial and uncertain, and drilling operations may be curtailed, delayed or canceled as a result of a variety of factors beyond our control, including:

• unexpected or adverse drilling conditions;

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• elevated pressure or irregularities in geologic formations;

• equipment failures or accidents;

• adverse weather conditions;

• fluctuations in the price of oil and gas;

• surface access restrictions;

• loss of title or other title related issues;

• compliance with governmental requirements; and

• shortages or delays in the availability of midstream transportation, drilling rigs, crews and equipment.

Because we identify the areas desirable for drilling in certain areas from 3-D seismic data covering large areas, we may not seek to acquire an option or lease rights until after the seismic data is analyzed or until the drilling locations are also identified; in those cases, we may not be permitted to lease, drill or produce oil or gas from those locations.

Even if drilled, our completed wells may not produce reserves of oil or gas that are economically viable or that meet our earlier estimates of economically recoverable reserves. Our overall drilling success rate or our drilling success rate for activity within a particular project area may decline. Unsuccessful drilling activities could result in a significant decline in our production and revenues and materially harm our operations and financial position by reducing our available cash and resources. The potential for production decline rates for our wells could be greater than we expect. Because of the risks and uncertainties of our business, our future performance in exploration and drilling may not be comparable to our historical performance described herein.

We may not adhere to our proposed drilling schedule.

Our final determination of whether to drill any wells will be dependent on a number of factors, including:

• the results of our exploration efforts and the acquisition, review and analysis of the seismic data;

• the availability and cost of sufficient capital resources to us and the other participants for the drilling of the prospects;

• the approval of the prospects by the other participants after additional data has been compiled;

• economic and industry conditions at the time of drilling or completion, including prevailing and anticipated prices for oil and gas and the availability and prices of drilling rigs, drilling and hydraulic fracturing crews and equipment, other services, supplies and equipment, and pipeline system and transportation constraints;

• lease expirations;

• access to water supplies or restrictions on water disposal;

• regulatory approvals; and

• the availability of leases and permits on reasonable terms for the prospects.

Although we have identified or budgeted for numerous drilling prospects, we may not be able to lease or drill those prospects within our expected time frame or at all. Wells that are currently part of our capital plan may be based on statistical results of drilling activities in other 3-D project areas that we believe are geologically similar rather than on analysis of seismic or other data in the prospect area, in which case actual drilling and results are likely to vary, possibly materially, from those statistical results. In addition, our drilling schedule may vary from our expectations because of future uncertainties. We may not be able to raise the capital required to drill all of our identified or budgeted wells. In addition, our ability to produce oil and gas may be significantly affected by the availability and prices of hydraulic fracturing equipment and crews. There can be no assurance that these projects can be successfully developed or that any identified drill sites or budgeted wells will, if drilled, encounter reservoirs of commercially productive oil or gas. We may seek to sell or reduce all or a portion of our interest in a project area or with respect to prospects or budgeted wells within such project area.

Our reserve data and estimated discounted future net cash flows are estimates based on assumptions that may be inaccurate and are based on existing economic and operating conditions that may change in the future.

There are uncertainties inherent in estimating oil and gas reserves and their estimated value, including many factors beyond the control of the producer. The reserve data included herein represents only estimates. Reservoir engineering is a subjective and inexact process of estimating underground accumulations of oil and gas that cannot be measured in an exact manner and is based on assumptions that may vary considerably from actual results. These include subjective estimates of underground accumulations of oil and natural gas and assumptions concerning future oil and natural gas prices, production levels, ultimate recoveries and

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operating and development costs. As a result, estimated quantities of proved reserves, projections of future production rates and the timing of development expenditures may be incorrect. Furthermore, different reserve engineers may make different estimates of reserves and cash flows based on the same data. Reserve estimates may be subject to upward or downward adjustment, and actual production, revenue and expenditures with respect to our reserves likely will vary, possibly materially, from estimates. Additionally, in recent years, there has been increased debate and disagreement over the classification of reserves, with particular focus on proved undeveloped reserves. The interpretation of SEC rules regarding the classification of reserves and their applicability in different situations remain unclear in many respects. Changing interpretations of the classification standards of reserves or disagreements with our interpretations could cause us to write down reserves.

SEC rules require that, subject to limited exceptions, proved undeveloped reserves may only be booked if they relate to wells scheduled to be drilled within five years after the date of booking. This requirement may limit our ability to book additional proved undeveloped reserves as we pursue our drilling program. Moreover, we may be required to write down our proved undeveloped reserves if we do not drill those wells within the required five-year timeframe. We have deferred some of our exploration activities in response to the severe price downturn beginning in the summer of 2014 and such continued deferral may increase the impact of this requirement.

As of December 31, 2018, approximately 60% of our proved reserves were proved undeveloped. Moreover, some of the producing wells included in our reserve reports as of December 31, 2018 had produced for a relatively short period of time as of that date. Because most of our reserve estimates are calculated using volumetric analysis, those estimates are less reliable than estimates based on a lengthy production history. Volumetric analysis involves estimating the volume of a reservoir based on the net feet of pay of the structure and an estimation of the area covered by the structure based on seismic analysis. In addition, realization or recognition of our proved undeveloped reserves will depend on our development schedule and plans. Lack of reasonable certainty with respect to development plans for proved undeveloped reserves could cause the discontinuation of the classification of these reserves as proved.

The discounted future net cash flows included herein are not necessarily the same as the current market value of our estimated oil and gas reserves. As required by the current requirements for oil and gas reserve estimation and disclosures, the estimated discounted future net cash flows from proved reserves are based on the average of the sales price on the first day of each month during the trailing 12-month period prior to December 31, 2018, with costs determined as of the date of the estimate. If commodity prices remain at their current levels, the estimated discounted future net cash flows from our proved reserves would generally be expected to decrease as earlier months with higher commodity sales prices will be removed from this calculation in the future.

Actual future net cash flows also will be affected by factors such as:

• the actual prices we receive for oil and gas;

• our actual operating costs in producing oil and gas;

• the amount and timing of actual production;

• supply and demand for oil and gas;

• increases or decreases in consumption of oil and gas; and

• changes in governmental regulations or taxation.

In addition, the 10% discount factor we use when calculating discounted future net cash flows for reporting requirements in compliance with the Financial Accounting Standards Board Accounting Standards Codification Topic 932, “Extractive Activities-Oil and Gas” may not be the most appropriate discount factor based on interest rates in effect from time to time and risks associated with us or the oil and gas industry in general.

We depend on successful exploration, development and acquisitions to maintain reserves and revenue in the future.

In general, the volume of production from oil and gas properties declines as reserves are depleted, with the rate of decline depending on reservoir characteristics. Except to the extent we conduct successful exploration and development activities or acquire properties containing proved reserves, or both, our proved reserves will decline as reserves are produced. Our future oil and gas production is, therefore, highly dependent on our level of success in developing, finding or acquiring additional reserves that are economically recoverable. There can be no assurance that undeveloped properties acquired by us will be profitably developed, that new wells drilled by us in prospects that we pursue will be productive or that we will recover all or any portion of our investment in such undeveloped properties or wells.

Our future acquisitions may yield revenues or production that varies significantly from our projections.

In acquiring producing properties, we assess the recoverable reserves, current and future oil and gas prices, development and operating costs, potential environmental and other liabilities and other factors relating to the properties. Our assessments are necessarily inexact and their accuracy is inherently uncertain. Our review of a subject property in connection with our acquisition

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assessment will not reveal all existing or potential problems or permit us to become sufficiently familiar with the property to assess fully its deficiencies and capabilities. We may not inspect every well, and we may not be able to observe structural and environmental problems even when we do inspect a well. If problems are identified, the seller may be unwilling or unable to provide effective contractual protection against all or part of those problems and we may be forced to assume liabilities that we did not accurately quantify. We may increase our emphasis on producing property acquisitions. We have relatively less experience in such acquisitions as our past acquisition focus has been primarily on nonproducing acreage. Any acquisition of property interests may not be economically successful, and unsuccessful acquisitions may have a material adverse effect on our financial position and future results of operations.

Our overall level of debt and Preferred Stock obligations could adversely affect us.

As of December 31, 2018, we had a level of outstanding debt and Preferred Stock that could have significant adverse consequences on our business and future prospects, including the following:

• we may not be able to obtain financing in the future on acceptable terms or at all for working capital, capital expenditures, acquisitions, debt service requirements or other purposes;

• less-levered competitors could have a competitive advantage because they have lower debt service requirements;

• credit rating agencies could downgrade our credit ratings below currently expected levels;

• we may be less able to take advantage of significant business opportunities and to react to changes in market or industry conditions than our competitors;

• we may be required to dedicate a substantial portion of our cash flows from operations to the repayment of our debt and Preferred Stock and the service of interest costs and dividends associated with our debt and Preferred Stock, rather than to productive investments; and

• we may be vulnerable in the event of adverse economic or industry conditions or a downturn in our business.

A future issuance, sale or exchange of our stock or warrants could trigger a limitation on our ability to utilize net operating loss carryforwards.

Our ability to utilize U.S. net operating loss carryforwards to reduce future taxable income is subject to various limitations under the Internal Revenue Code of 1986, as amended (the “Code”). The utilization of such carryforwards may be limited under Section 382 of the Code upon the occurrence of ownership changes resulting from issuances of our stock or the sale or exchange of our stock by certain shareholders if, as a result, there is an aggregate change of more than 50% in the beneficial ownership of our stock during any three-year period. For this purpose, “stock” includes certain preferred stock and common stock warrants (including the Preferred Stock and the Warrants issued to finance in part, the ExL Acquisition). In the event of such an ownership change, Section 382 of the Code imposes an annual limitation on the amount of our taxable income that can be offset by these loss carryforwards. The limitation is generally equal to the product of (a) the fair market value of our equity multiplied by (b) a percentage approximately equivalent to the yield on long-term tax exempt bonds during the month in which an ownership change occurs. In addition, the limitation is increased if there are recognized built-in gains during any post-change year, but only to the extent of any net unrealized built-in gains inherent in the assets sold. We do not believe we have a Section 382 limitation on the ability to utilize our U.S. loss carryforwards as of December 31, 2018. However, future issuances, sales or exchanges of our stock (including, potentially, relatively small transactions and transactions beyond our control) could, taken together with prior transactions with respect to our stock, trigger an ownership change under Section 382 of the Code and therefore a limitation on our ability to utilize our U.S. loss carryforwards. Any such limitation could cause some of such loss carryforwards to expire before we would be able to utilize them to reduce taxable income in future periods, possibly resulting in a substantial income tax expense or write down of our tax assets or both.

Holders of the Preferred Stock have rights that may restrict our ability to operate our business or be adverse to holders of our common stock.

The Statement of Resolutions Establishing Series of 8.875% Redeemable Preferred Stock of Carrizo Oil & Gas, Inc. (the “Statement of Resolutions”) contains covenants that, among other things, so long as the GSO Funds (as defined below) and their affiliates beneficially own more than 50% of the outstanding Preferred Stock, limit our ability to, without the written consent of a designated representative of the Preferred Stock, but subject to certain exceptions, (i) issue stock senior to or on parity with the Preferred Stock, (ii) incur indebtedness that would cause us to exceed a specified leverage ratio, (iii) amend, modify, alter or supplement our articles of incorporation or the Statement of Resolutions in a manner that would adversely affect the rights, preferences or privileges of the Preferred Stock, (iv) enter into or amend certain debt agreements that would be more restrictive on the payment of dividends on, or redemption of, the Preferred Stock than those existing on the Preferred Stock closing and (v) pay distributions on, purchase or redeem our common stock or other stock junior to the Preferred Stock that would cause us to

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exceed a specified leverage ratio. We can be required to redeem the Preferred Stock (i) after the seventh anniversary of its initial issuance or (ii) at any time we fail to pay a dividend, subject to limited cure rights.

Holders of the Preferred Stock will, in certain circumstances, have additional rights in the event we fail to timely pay dividends, fail to redeem the Preferred Stock upon a change of control if required or fail to redeem the Preferred Stock upon request of the holders of the Preferred Stock following the seventh anniversary of the date of issuing the Preferred Stock. These rights include, subject to certain exceptions, (i) that holders of a majority of the then-outstanding Preferred Stock will have the exclusive right, voting separately as a class, to appoint and elect up to two directors to our board of directors, (ii) that approval of the holders of a majority of the then-outstanding Preferred Stock will be required prior to incurring indebtedness subject to a leverage ratio, declaring or paying prohibited distributions or issuing equity of subsidiaries to third parties; and (iii) that holders of a majority of the then-outstanding Preferred Stock will have the right to increase dividend payments and the ability to require us to pay dividends in common stock.

Holders of the Preferred Stock also have limited voting rights, including those with respect to potential amendments to our articles of incorporation or the Statement of Resolutions that have an adverse effect on the existing terms of the Preferred Stock and in certain other limited circumstances or as required by law.

We participate in oil and gas leases with third parties and these third parties may not be able to fulfill their commitments to our projects.

We frequently own less than 100% of the working interest in the oil and gas leases on which we conduct operations, and other parties will own the remaining portion of the working interest. Financial risks are inherent in any operation where the cost of drilling, equipping, completing and operating wells is shared by more than one person. We could be held liable for joint activity obligations of the other working interest owners such as nonpayment of costs and liabilities arising from the actions of the other working interest owners. Some of these working interest owners may experience liquidity and cash flow problems. These problems may lead these parties to attempt to delay the pace of drilling or project development in order to preserve cash. A working interest owner may be unable or unwilling to pay its share of project costs. In some cases, a working interest owner may declare bankruptcy. In the event any of these third party working interest owners do not pay their share of such costs, we would likely have to pay those costs, and we may be unsuccessful in any efforts to recover these costs from such parties, which could materially adversely affect our financial position.

Certain of our undeveloped leasehold assets are subject to leases that will expire over the next several years unless production is established on units containing the acreage or we timely exercise our contractual rights to extend the terms of such leases by continuous operations or the payment of lease extension payments or delay rentals.

Leases on oil and natural gas properties typically have a primary term of three to five years, after which they expire unless, prior to expiration, a well is drilled and production of hydrocarbons in paying quantities is established, applicable lease extension payments or delay rentals are made, or such lease is otherwise maintained pursuant to any applicable continuous operations provision. If our leases on our undeveloped properties expire and we are unable to renew the leases, we will lose our right to develop the related properties. Although we seek to actively manage our undeveloped properties, our drilling plans for these areas are subject to change based upon various factors, including drilling results, oil and natural gas prices, the availability and cost of capital, drilling and production costs, availability of drilling services and equipment, gathering system and pipeline transportation constraints and regulatory approvals. If commodity prices remain low, we may be required to delay our drilling plans and, as a result, may lose our right to develop the related properties.

We have substantial capital requirements that, if not met, may hinder operations.

We have experienced and expect to continue to experience substantial capital needs as a result of our active exploration and development program and acquisitions. We expect that additional external financing will be required in the future to fund our growth. We may not be able to obtain additional financing, and financing under our existing revolving credit facility or new credit facilities may not be available in the future. Even if additional capital becomes available, it may not be on terms acceptable to us. As in the past, without additional capital resources, we may be forced to limit or defer our planned oil and gas exploration and development drilling program by releasing rigs or deferring fracturing, completion and hookup of the wells to pipelines and thereby adversely affect our production, cash flow, and the recoverability and ultimate value of our oil and gas properties, in turn negatively affecting our business, financial position and results of operations.

If our access to markets is restricted, it could negatively impact our production, our income and ultimately our ability to retain our leases. Our ability to sell oil and natural gas and receive market prices for our oil and natural gas may be adversely affected by pipeline and gathering system capacity constraints, including insufficient transportation capacity in the Delaware Basin.

Market conditions or the unavailability of satisfactory oil and gas transportation arrangements may hinder our access to oil and gas markets or delay our production. The availability of a ready market for our oil and gas production depends on a number

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of factors, including the demand for and supply of oil and gas and the proximity of reserves to pipelines and terminal facilities. Our ability to market our production depends in substantial part on the availability and capacity of gathering systems, pipelines and processing facilities owned and operated by third parties. Our failure to obtain such services on acceptable terms could materially harm our business. Our productive properties may be located in areas with limited or no access to pipelines, thereby necessitating delivery by other means, such as trucking, or requiring compression facilities. However, such trucking and compression facilities may not always be available to us in acceptable terms or at all. Such restrictions on our ability to sell our oil or gas may have several adverse effects, including higher transportation costs, fewer potential purchasers (thereby potentially resulting in a lower selling price) or, in the event we were unable to market and sustain production from a particular lease for an extended time, possibly causing us to lose a lease due to lack of production. Pipeline and gathering constraints have in the past required, and may in the future require, us to flare natural gas occasionally, decreasing the volumes sold from our wells. Our lease terms may require us to pay royalties on such flared gas to maintain our leases, which could adversely affect our business.

There is currently limited pipeline and gathering system capacity in areas where we operate. See “-Interruption to crude oil and natural gas gathering systems, pipelines and transportation and processing facilities we do not own could result in the loss of production and revenues.” This capacity shortage is particularly pronounced in the Delaware Basin and this area of operation has been characterized by periods when oil production has surpassed local transportation capacity, resulting in substantial discounts to the price received for crude oil prices quoted for WTI oil. During the year ended December 31, 2018, the Delaware Basin market crude oil price has experienced a substantial discount to WTI-Cushing prices, primarily due to limited pipeline capacity constraining transportation of crude oil out of the Delaware Basin to major marketing hubs. The amount of oil and gas being produced by us and others could continue to exceed the capacity of, and result in strains on, the various gathering and transportation systems, pipelines, processing facilities, and other infrastructure available in that area. It will be necessary for additional infrastructure, pipelines, gathering and transportation systems and processing facilities to be expanded, built, or developed to accommodate anticipated production from these areas. The expansion and construction of pipeline facilities that could alleviate transportation restrictions are affected by the availability and costs of necessary equipment, supplies, labor and other services, as well as the length of time to complete such projects. In addition, these projects can be affected by changes in international trade relationships, including the imposition of trade restrictions or tariffs relating to crude oil and natural gas and any materials or products used to expand or construct pipeline facilities, such as certain imported steel mill products that are currently subject to an additional global tariff. All of these factors could negatively impact our realized oil prices, as well as actual results of our operations.

Historically, when available we have generally delivered our oil and gas production through gathering systems and pipelines that we do not own under interruptible or short-term transportation agreements. Under the interruptible transportation agreements, the transportation of our oil and gas production may be interrupted due to capacity constraints on the applicable system, for maintenance or repair of the system, or for other reasons as dictated by the particular agreements. In the Delaware Basin, we have entered into firm transportation agreements for a portion of our production in such areas in order to assure our ability, and that of our purchasers, to successfully market the oil and gas that we produce. We may also enter into firm transportation arrangements for additional production in the future. These firm transportation agreements may be more costly than interruptible or short-term transportation agreements.

A portion of our oil and gas production in any region may be interrupted, or shut in, from time to time for numerous reasons, including as a result of weather conditions, accidents, loss or unavailability of pipeline or gathering system access and capacity, field labor issues or strikes, or we might voluntarily curtail production in response to market conditions, including low oil and gas prices. If a substantial amount of our production is interrupted at the same time, it could temporarily adversely affect our cash flow. Furthermore, if we were required to shut in wells we might also be obligated to pay shut-in royalties to certain mineral interest owners in order to maintain our leases.

Interruption to crude oil and natural gas gathering systems, pipelines and transportation and processing facilities we do not own could result in the loss of production and revenues.

Our operations are dependent upon the availability, proximity and capacity of pipelines, natural gas gathering systems and transportation and processing facilities we do not own. Any significant change affecting these infrastructure facilities could materially harm our business. The lack of available capacity of gathering systems, pipelines and facilities could reduce the price offered for our production or result in the shut-in of producing wells or the delay or discontinuance of development plans for properties. These systems and facilities may be temporarily unavailable due to adverse weather conditions or operational issues or may not be available to us in the future. See “-Our operations are subject to various operating and other casualty risks that could result in liability exposure or the loss of production and revenues.” Additionally, activists or other efforts may delay or halt the construction of additional pipelines or facilities. To the extent these services are unavailable, we would be unable to realize revenue from wells served by such systems and facilities until suitable arrangements are made to market our production. As a result, we could experience reductions in revenue that could reduce or eliminate the funds available for our exploration and development programs and acquisitions, or result in the loss of property.

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Instability in the global financial system or in the oil and gas industry sector may have impacts on our liquidity and financial condition that we currently cannot predict.

Instability in the global financial system or in the oil and gas industry sector may have a material impact on our liquidity and our financial condition. We rely upon access to both our revolving credit facility and longer-term capital markets as sources of liquidity for any capital requirements not satisfied by the cash flow from operations or other sources. Our ability to access the capital markets or borrow money may be restricted or made more expensive at a time when we would like, or need, to raise capital, which could have an adverse impact on our flexibility to react to changing economic and business conditions and on our ability to fund our operations and capital expenditures in the future. The economic situation could have an impact on our lenders or customers, causing them to fail to meet their obligations to us, and on the liquidity of our operating partners, resulting in delays in operations or their failure to make required payments. Also, market conditions, including with respect to commodity prices such as for oil and gas, could have an impact on our oil and gas derivative instruments if our counterparties are unable to perform their obligations or seek bankruptcy protection. Additionally, challenges in the economy have led and could further lead to reductions in the demand for oil and gas, or further reductions in the prices of oil and gas, or both, which could have a negative impact on our financial position, results of operations and cash flows.

The risks associated with our debt and the provisions of our debt agreements could adversely affect our business, financial position and results of operations.

We have demands on our cash resources, including interest expense, operating expenses and funding of our capital expenditures. Our level of long-term debt, the demands on our cash resources and the provisions of the credit agreement governing our revolving credit facility and the indentures governing our 6.25% Senior Notes due 2023 (the “6.25% Senior Notes”) and our 8.25% Senior Notes may have adverse consequences on our operations and financial results, including:

• placing us at a competitive disadvantage compared to our competitors that have lower debt service obligations and significantly greater operating and financial flexibility than we do;

• limiting our financial flexibility, including our ability to borrow additional funds, pay dividends, make certain investments and issue equity on favorable terms or at all;

• limiting our flexibility in planning for, and reacting to, changes in business conditions;

• increasing our interest expense on our variable rate borrowings if interest rates increase;

• requiring us to use a substantial portion of our cash flow to make debt service payments, which will reduce the funds that would otherwise be available for operations and future business opportunities;

• requiring us to modify our operations, including by curtailing portions of our drilling program, selling assets, reducing our capital expenditures, refinancing all or a portion of our existing debt or obtaining additional financing, which may be on unfavorable terms; and

• making us more vulnerable to downturns in our business or the economy, including a decline in oil prices.

In addition, the provisions of our revolving credit facility and our 6.25% Senior Notes and our 8.25% Senior Notes place restrictions on us and certain of our subsidiaries with respect to incurring additional indebtedness and liens, making dividends and other payments to shareholders, repurchasing our common stock, repurchasing or redeeming our 6.25% Senior Notes and our 8.25% Senior Notes, making investments, acquisitions, mergers and asset dispositions, entering into hedging transactions and other matters. Our revolving credit facility also requires compliance with covenants to maintain specified financial ratios. Our business plan and our compliance with these covenants are based on a number of assumptions, the most important of which is relatively stable oil and gas prices at economically sustainable levels. If the prices that we receive for our oil and gas production continue to remain at low levels or to decline, it could lead to further reduced revenues, cash flow and earnings, which in turn could lead to a default under certain financial covenants contained in our revolving credit facility, including the covenants related to working capital and the ratios described above. Also, a further decline in or sustained low oil and gas prices could result in a lowering of our credit ratings by rating agencies, which could adversely impact the pricing of, or our ability to issue, new debt instruments. Because the calculations of the financial ratios are made as of certain dates, the financial ratios can fluctuate significantly from period to period as the amounts outstanding under our revolving credit facility are dependent on the timing of cash flows related to operations, capital expenditures, sales of oil and gas properties and securities offerings. If a further decline in oil or gas prices were to occur in the future or if low prices continue for an extended period, it could further increase the risk of a lowering in our credit rating or our inability to comply with covenants to maintain specified financial ratios. Additionally, these ratios may have the effect of restricting us from borrowing the full amount available under the borrowing base for our revolving credit facility. In order to provide a margin of comfort with regard to these financial covenants, we may seek to further reduce our capital expenditure plan, sell additional non-strategic assets or opportunistically modify or increase our derivative instruments to the extent permitted under our revolving credit facility. We cannot assure you that we will be able to successfully

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execute any of these strategies, or if executed, that they will be sufficient to avoid a default under our revolving credit facility if a further decline in oil or gas prices were to occur in the future or if low prices continue for an extended period.

The terms of our Preferred Stock have many of the same effects as our debt and terms of our debt agreements. See “—Our overall level of debt and Preferred Stock obligations could adversely affect us.” and “—Holders of the Preferred Stock have rights that may restrict our ability to operate our business or be adverse to holders of our common stock.”

The borrowing base under our revolving credit facility may be reduced below the amount of borrowings outstanding under such facility.

Under the terms of our revolving credit facility, our borrowing base is subject to redeterminations at least semi-annually based in part on assumptions of the administrative agent with respect to, among other things, crude oil and natural gas prices. A negative adjustment could occur if the crude oil and natural gas prices used by the banks in calculating the borrowing base are significantly lower than those used in the last redetermination, including as a result of a decline in crude oil prices or an expectation that such reduced prices will continue. The next redetermination of our borrowing base is scheduled to occur in Spring 2019. In addition, the portion of our borrowing base made available to us is subject to the terms and covenants of our revolving credit facility, including compliance with the ratios and other financial covenants of such facility. In the event the amount outstanding under our revolving credit facility exceeds the redetermined borrowing base, we could be forced to repay a portion of our borrowings. We may not have sufficient funds to make any required repayment. If we do not have sufficient funds and are otherwise unable to negotiate renewals of our borrowings or arrange new financing, we may have to sell a portion of our assets.

We may face difficulties in securing and operating under authorizations and permits to drill, complete or operate our wells.

The recent growth in oil and gas exploration in the United States has drawn intense scrutiny from environmental and community interest groups, regulatory agencies and other governmental entities. As a result, we may face significant opposition to, or increased regulation of, our operations that may make it difficult or impossible to obtain permits and other needed authorizations to drill, complete or operate, result in operational delays, or otherwise make oil and gas exploration more costly or difficult than in other countries.

Many of our properties are in areas that may have been partially depleted or drained by our existing wells or other offset wells and certain of our wells may be adversely affected by actions other operators may take when drilling, completing, or operating wells that they own.

Many of our properties are in areas that may have already been partially depleted or drained by earlier drilling, including offset drilling by other operators. The owners of leasehold interests adjoining any of our properties could take actions, such as drilling and completing additional wells, which could inhibit our ability to find or recover commercial quantities of oil and adversely affect our operations. When a new well is completed and produced, the pressure differential in the vicinity of the well causes the migration of reservoir fluids toward the new wellbore (and potentially away from existing wellbores). As a result, the drilling and production of these potential locations could cause a depletion of our proved reserves, may result in an acceleration in the decline in production of our wells and may inhibit our ability to further develop our proved reserves. In addition, completion operations and other activities conducted on adjacent or nearby wells could cause production from our producing wells to be shut in for indefinite periods of time, could result in increased lease operating expenses and could adversely affect the production and reserves from our wells after they recommence production. We have no control over the operations or activities of offsetting operators.

We have only limited experience drilling wells in the Delaware Basin and less information regarding reserves and decline rates in these shale formations than in some other areas of our operations.

We have limited exploration and development experience in the Delaware Basin. We have participated in the drilling of only 117 gross (48.4 net) operated and non-operated wells in the Delaware Basin. Other operators in these areas have significantly more experience in the drilling of wells, including the drilling of horizontal wells. As a result, we have less information with respect to the ultimate recoverable reserves, the production decline rate and other matters relating to the exploration, drilling and development of the Delaware Basin than we have in our Eagle Ford area in which we operate.

If we are unable to acquire adequate supplies of water for our operations or are unable to dispose of the water we use at a reasonable cost and within applicable environmental rules, our ability to produce oil and gas commercially and in commercial quantities could be impaired.

We use a substantial amount of water in our operations, including in the hydraulic fracturing process. Our inability to locate sufficient amounts of water, or to treat and dispose of water after drilling at a reasonable cost, could adversely impact our operations. Moreover, the imposition of new environmental initiatives and regulations could include restrictions on our ability to conduct certain operations such as hydraulic fracturing or disposal of waste, including, but not limited to, produced water, drilling fluids and other wastes associated with the exploration, development or production of oil and gas. Furthermore, future environmental regulations and permit requirements governing the withdrawal, storage and use of surface water or groundwater necessary for

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hydraulic fracturing of wells could increase operating costs and cause delays, interruptions or termination of operations, the extent of which cannot be predicted, all of which could have an adverse effect on our operations and financial performance. For example, in June 2016, the EPA established pretreatment standards for disposal of wastewater produced from unconventional oil and natural gas extraction facilities into publicly owned treatment works. In response to these actions, operators including us have begun to rely more on recycling of flowback and produced water from well sites as a preferred alternative to disposal.

We may not increase our acreage positions in areas with exposure to oil, condensate and NGLs.

If we are unable to increase our acreage positions in the Eagle Ford and Delaware Basin, this may detract from our efforts to realize our growth strategy in crude oil plays. Additionally, we may be unable to find or consummate other opportunities in these areas or in other areas with similar exposure to oil, condensate and NGLs on similar terms or at all.

Restricted land access could reduce our ability to explore for and develop oil and gas reserves.

Our ability to adequately explore for and develop oil and gas resources is affected by a number of factors related to access to land. Examples of factors which reduce our access to land include, among others:

• new municipal or state land use regulations, which may restrict drilling locations or certain activities such as hydraulic fracturing;

• local and municipal government control of land or zoning requirements, which can conflict with state law and deprive land owners of property development rights;

• landowner or foreign governments’ opposition to infrastructure development;

• regulation of federal land by the U.S. Department of the Interior Bureau of Land Management or other federal government agencies;

• anti-development activities, which can reduce our access to leases through legal challenges or lawsuits, disruption of drilling, or damage to equipment;

• disputes regarding leases; and

• disputes with landowners, royalty owners, or other operators over such matters as title transfer, joint interest billing arrangements, revenue distribution, or production or cost sharing arrangements.

Loss of access to land for which we own mineral rights could result in a reduction in our proved reserves and a negative impact on our results of operations and cash flows. Reduced ability to obtain new leases could constrain our future growth and opportunity set by limiting the expansion of our operations.

We face strong competition from other oil and gas companies.

We encounter competition from other oil and gas companies in all areas of our operations, including the acquisition of exploratory prospects and proven properties. Our competitors include major integrated oil and gas companies and numerous independent oil and gas companies, individuals and drilling and income programs. Many of our competitors are large, well-established companies that have been engaged in the oil and gas business much longer than we have and possess substantially larger operating staffs and greater capital resources than we do. These companies may be able to pay more for exploratory projects and productive oil and gas properties and may be able to define, evaluate, bid for and purchase a greater number of properties and prospects than our financial or human resources permit. In addition, these companies may be able to expend greater resources on the existing and changing technologies that we believe are and will be increasingly important to attaining success in the industry. Such competitors may also be in a better position to secure oilfield services and equipment on a timely basis or on favorable terms. These companies may also have a greater ability to continue drilling activities during periods of low oil and gas prices, such as the current commodity price environment, and to absorb the burden of current and future governmental regulations and taxation. We may not be able to conduct our operations, evaluate and select suitable properties and consummate transactions successfully in this highly competitive environment.

We may not be able to keep pace with technological developments in our industry.

The oil and gas industry is characterized by rapid and significant technological advancements and introductions of new products and services using new technologies. As others use or develop new technologies, we may be placed at a competitive disadvantage, and competitive pressures may force us to implement those new technologies at substantial cost. In addition, other oil and gas companies may have greater financial, technical and personnel resources that allow them to enjoy technological advantages and may in the future allow them to implement new technologies before we can. We may not be able to respond to these competitive pressures and implement new technologies on a timely basis or at an acceptable cost. If one or more of the technologies we use now or in the future were to become obsolete or if we are unable to use the most advanced commercially available technology, our business, financial condition and results of operations could be materially adversely affected.

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Part of our strategy involves drilling existing or emerging shale plays using some of the latest available seismic, horizontal drilling and completion techniques. The results of our planned exploratory and delineation drilling in these plays are subject to drilling and completion technique risks, and drilling results may not meet our expectations for reserves or production. As a result, the value of our undeveloped acreage could decline if drilling results are unsuccessful.

We rely to a significant extent on seismic data and other advanced technologies in evaluating undeveloped properties and in conducting our exploration activities. The seismic data and other technologies we use do not allow us to know conclusively, prior to drilling and completing a well, whether oil or natural gas is present or may be produced economically.

Many of our operations involve drilling and completion techniques developed by us or our service providers in order to maximize cumulative recoveries. Risks that we face while drilling include, but are not limited to, landing our well bore in the desired drilling zone, staying in the desired drilling zone while drilling horizontally through the formation, running our casing the entire length of the well bore, and being able to run tools and recover equipment consistently through the horizontal well bore. Risks that we face while completing our wells include, but are not limited to, being able to fracture stimulate the planned number of stages, being able to run tools and other equipment the entire length of the well bore during completion operations, being able to recover such tools and other equipment, and successfully cleaning out the well bore after completion of the final fracture stimulation.

Ultimately, the success of these drilling and completion techniques can only be evaluated over time as more wells are drilled and production profiles are established over a sufficiently long time period. If our drilling results are less than anticipated or we are unable to execute our drilling program because of capital constraints, lease expirations, limited access to gathering systems and takeaway capacity, commodity price decline, or other reasons, then the return on our investment for a particular project may not be as attractive as we anticipated and the value of our undeveloped acreage could decline in the future.

We are subject to various environmental risks and governmental regulations, including those relating to benzene emissions, hydraulic fracturing and global climate change, and future regulations may be more stringent resulting in increased operating costs and decreased demand for the oil and gas that we produce.

Oil and gas operations are subject to various federal, state, local and foreign laws and government regulations that may change from time to time. Matters subject to regulation include discharge permits for drilling operations, well testing, plug and abandonment requirements and bonds, reports concerning operations, the spacing of wells, unitization and pooling of properties and taxation. From time to time, regulatory agencies have imposed price controls and limitations on production by restricting the rate of flow of oil and gas wells below actual production capacity in order to conserve supplies of oil and gas. Other federal, state, local and foreign laws and regulations relating primarily to the protection of human health and the environment apply to the development, production, handling, storage, transportation and disposal of oil and gas, by-products thereof and other substances and materials produced or used in connection with oil and gas operations, including drilling fluids and wastewater. We may incur costs arising out of property damage, including environmental damage caused by previous owners or operators of property we purchase or lease or relating to third party sites, or injuries to employees and other persons. As a result, we may incur substantial liabilities to third parties or governmental entities and may be required to incur substantial remediation costs. We also are subject to changing and extensive tax laws, the effects of which cannot be predicted. Compliance with existing, new or modified laws and regulations could result in substantial costs, delay our operations or otherwise have a material adverse effect on our business, financial position and results of operations.

Moreover, changes in environmental laws and regulations occur frequently and such laws and regulations tend to become more stringent over time. Increased scrutiny of our industry may also occur as a result of the EPA’s 2017-2019 National Enforcement Initiative (“NEI”), “Ensuring Energy Extraction Activities Comply with Environmental Laws,” through which the EPA will address incidences of noncompliance from natural gas extraction and production activities that may cause or contribute to significant harm to public health or the environment. However, the EPA has proposed a 2020-2023 National Compliance Initiative (formerly referred to as an NEI) that would transition the 2017-2019 NEI to focus on significant sources of volatile organic compounds that have a substantial impact on air quality, without regard to sector. Stricter laws, regulations or enforcement policies could significantly increase our compliance costs and negatively impact our production and operations, which could have a material adverse effect on our results of operations and cash flows. See “Item 1. Business-Additional Oil and Gas Disclosures-Regulation-Environmental Regulations” for additional information.

There is increasing attention in the United States and worldwide to the issue of climate change and the contributing effect of GHG emissions. The modification of existing laws or regulations or the adoption of new laws or regulations curtailing oil and gas exploration in the areas in which we operate could materially and adversely affect our operations by limiting drilling opportunities or imposing materially increased costs. See “Item 1. Business-Additional Oil and Gas Disclosures-Regulation- Global Climate Change” for additional information.

Hydraulic fracturing is an important and commonly used process in the completion of oil and gas wells, particularly in unconventional resource plays. Hydraulic fracturing involves the injection of water, sand and chemicals under pressure into rock

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formations to stimulate oil and gas production. The U.S. Congress has considered legislation to subject hydraulic fracturing operations to federal regulation and to require the disclosure of chemicals used by us and others in the oil and gas industry in the hydraulic fracturing process. The EPA has asserted federal regulatory authority over hydraulic fracturing involving diesel under the federal Safe Drinking Water Act and has released permitting guidance for hydraulic fracturing operations that use diesel fuel in fracturing fluids in those states where the EPA is the permitting authority. In addition, in March 2015, the BLM issued a final rule to regulate hydraulic fracturing on federal and Indian land. However, in December 2017, the BLM published a final rule rescinding the 2015 rule. The rescission rule is currently subject to legal challenge. A number of federal agencies are also analyzing, or have been requested to review, a variety of environmental issues associated with hydraulic fracturing. For example, in December 2016, the EPA released the final results of a study of the potential impacts of hydraulic fracturing activities on drinking water resources in the states where the EPA is the permitted authority. The study concluded that hydraulic fracturing activities can impact drinking water resources under some circumstances, including large volume spills and inadequate mechanical integrity of wells. These ongoing or proposed studies, depending on their course and any meaningful results obtained, could spur initiatives to further regulate hydraulic fracturing under the Safe Drinking Water Act, the Toxic Substances Control Act, or other regulatory mechanisms.

State and federal regulatory agencies recently have focused on a possible connection between hydraulic fracturing related activities and the increased occurrence of seismic activity. When caused by human activity, such events are called induced seismicity. In a few instances, operators of injection wells in the vicinity of seismic events have been ordered to reduce injection volumes or suspend operations. Some state regulatory agencies, including those in Texas, have modified their regulations to account for induced seismicity. Regulatory agencies at all levels are continuing to study the possible linkage between oil and gas activity and induced seismicity. A 2012 report published by the National Academy of Sciences concluded that only a very small fraction of the tens of thousands of injection wells have been suspected to be, or have been, the likely cause of induced seismicity; and a 2015 report by researchers at the University of Texas has suggested that the link between seismic activity and wastewater disposal may vary by region. In March 2016, the United States Geological Survey (the “USGS”) identified states with the most significant hazards from induced seismicity, which included Texas. Subsequent USGS seismic hazard forecasts have continued to include Texas, but have found greater probability of seismic hazards in other states. A number of lawsuits have been filed alleging that disposal well operations have caused damage to neighboring properties or otherwise violated state and federal rules regulating waste disposal. These developments could result in additional regulation and restrictions on the use of injection wells and hydraulic fracturing. Such regulations and restrictions could cause delays and impose additional costs and restrictions on our operations and on our and our contractors’ waste disposal activities.

Several states, including states where we operate such as Texas, have proposed or adopted legislative or regulatory restrictions on hydraulic fracturing through additional permit requirements, public disclosure of fracturing fluid contents, water sampling requirements, and operational restrictions. Further, some states and local governments have adopted or are considering adopting bans on drilling. For example, the City of Denton, Texas adopted a moratorium on hydraulic fracturing in November 2014, which was later lifted in 2015. We use hydraulic fracturing extensively and any increased federal, state, local, foreign or international regulation of hydraulic fracturing or offshore drilling, including legislation and regulation in the state of Texas, could reduce the volumes of oil and gas that we can economically recover, which could materially and adversely affect our revenues and results of operations. See “Item 1. Business-Additional Oil and Gas Disclosures-Regulation-Regulation of Natural Gas and Oil Exploration and Production” and “-Environmental Regulations” for additional information.

From time to time legislation is introduced in the U.S. Congress that, if enacted into law, would make significant changes to United States tax laws, including the elimination of certain key U.S. federal income tax incentives currently available to oil and gas exploration and production companies. These or any other similar changes in U.S. federal income tax laws could defer or eliminate certain tax deductions that are currently available with respect to oil and gas exploration and development, and any such change could negatively affect our financial position and results of operations.

We face various risks associated with the trend toward increased anti-development activity.

As new technologies have been applied to our industry, we have seen significant growth in oil and gas supply in recent years, particularly in the U.S. With this expansion of oil and gas development activity, opposition toward oil and gas drilling and development activity has been growing both in the U.S. and globally. Companies in the oil and gas industry, such as us, can be the target of opposition to development from certain stakeholder groups. These anti-development efforts could be focused on:

• limiting oil and gas development;

• reducing access to federal and state owned lands;

• delaying or canceling certain projects such as shale development and pipeline construction;

• limiting or banning the use of hydraulic fracturing;

• denying air-quality permits for drilling; and

• advocating for increased regulations on shale drilling and hydraulic fracturing.

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Future anti-development efforts could result in the following:

• blocked development;

• denial or delay of drilling permits;

• shortening of lease terms or reduction in lease size;

• restrictions on installation or operation of gathering or processing facilities;

• restrictions on the use of certain operating practices, such as hydraulic fracturing;

• reduced access to water supplies or restrictions on water disposal;

• limited access or damage to or destruction of our property;

• legal challenges or lawsuits;

• increased regulation of our business;

• damaging publicity and reputational harm;

• increased costs of doing business;

• reduction in demand for our products; and

• other adverse effects on our ability to develop our properties and expand production.

Our need to incur costs associated with responding to these initiatives or complying with any new legal or regulatory requirements resulting from these activities that are substantial and not adequately provided for, could have a material adverse effect on our business, financial condition and results of operations. In addition, the use of social media channels can be used to cause rapid, widespread reputational harm.

Our operations are subject to various operating and other casualty risks that could result in liability exposure or the loss of production and revenues.

The oil and gas business involves operating hazards such as:

• well blowouts;

• mechanical failures;

• explosions;

• pipe or cement failures and casing collapses, which could release oil, natural gas, drilling fluids or hydraulic fracturing fluids;

• uncontrollable flows of oil, natural gas or well fluids;

• fires;

• geologic formations with abnormal pressures;

• spillage handling and disposing of materials, including drilling fluids and hydraulic fracturing fluids and other pollutants;

• pipeline ruptures or spills;

• releases of toxic gases;

• adverse weather conditions, including drought, flooding, winter storms, snow, hurricanes or other severe weather events; and

• other environmental hazards and risks including conditions caused by previous owners and lessors of our properties.

Any of these hazards and risks can result in substantial losses to us from, among other things, injury or loss or life, severe damage to or destruction of property, natural resources and equipment, pollution or other environmental damage, cleanup responsibilities, regulatory investigation and penalties and suspension of operations. As a result we could incur substantial liabilities or experience reductions in revenue that could reduce or eliminate the funds available for our exploration and development programs and acquisitions.

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We may not have enough insurance to cover all of the risks we face.

We maintain insurance against losses and liabilities in accordance with customary industry practices and in amounts that management believes to be prudent; however, insurance against all operational risks is not available to us. We do not carry business interruption insurance. We may elect not to carry insurance if management believes that the cost of available insurance is excessive relative to the risks presented. In addition, losses could occur for uninsured risks or in amounts in excess of existing insurance coverage. We cannot insure fully against pollution and environmental risks. We cannot assure you that we will be able to maintain adequate insurance in the future at rates we consider reasonable or that any particular types of coverage will be available. The occurrence of an event not fully covered by insurance could have a material adverse effect on our financial position and results of operations.

We conduct a portion of our operations through a joint venture, which subjects us to additional risks that could have a material adverse effect on the success of these operations, our financial position and our results of operations.

We conduct a portion of our operations through a joint venture with GAIL. We may also enter into other joint venture arrangements in the future. These third parties may have obligations that are important to the success of the joint venture, such as the obligation to pay carried costs pertaining to the joint venture and to pay their share of capital and other costs of the joint venture. The performance of these third party obligations, including the ability of the third parties to satisfy their obligations under these arrangements, is outside our control. If these parties do not satisfy their obligations under these arrangements, our business may be adversely affected.

Our joint venture arrangements may involve risks not otherwise present when exploring and developing properties directly, including, for example:

• our joint venture partners may share certain approval rights over major decisions;

• our joint venture partners may not pay their share of the joint venture’s obligations, leaving us liable for their shares of joint venture liabilities;

• we may incur liabilities as a result of an action taken by our joint venture partners;

• we may be required to devote significant management time to the requirements of and matters relating to the joint ventures;

• our joint venture partners may be in a position to take actions contrary to our instructions or requests or contrary to our policies or objectives; and

• disputes between us and our joint venture partners may result in delays, litigation or operational impasses.

The risks described above or the failure to continue our joint ventures or to resolve disagreements with our joint venture partners could adversely affect our ability to transact the business that is the subject of such joint venture, which would in turn negatively affect our financial condition and results of operations. The risks described above or the failure to continue our joint ventures or to resolve disagreements with our joint venture partners could adversely affect our ability to transact the business that is the subject of such joint venture, which would in turn negatively affect our financial condition and results of operations. The agreements under which we formed certain joint ventures may subject us to various risks, limit the actions we may take with respect to the properties subject to the joint venture and require us to grant rights to our joint venture partners that could limit our ability to benefit fully from future positive developments. Some joint ventures require us to make significant capital expenditures. If we do not timely meet our financial commitments or otherwise do not comply with our joint venture agreements, our rights to participate, exercise operator rights or otherwise influence or benefit from the joint venture may be adversely affected. Certain of our joint venture partners may have greater financial resources than we have and we may not be able to secure the funding necessary to participate in operations our joint venture partners propose, thereby reducing our ability to benefit from the joint venture.

We cannot control the activities on properties we do not operate.

We do not operate all of the properties in which we have an interest. As a result, we have limited ability to exercise influence over, and control the risks associated with, operations of these properties. The failure of an operator of our wells to adequately perform operations, an operator’s breach of the applicable agreements or an operator’s failure to act in ways that are in our best interests could reduce our production and revenues or could create liability for us for the operator’s failure to properly maintain the well and facilities and to adhere to applicable safety and environmental standards. With respect to properties that we do not operate:

• the operator could refuse to initiate exploration or development projects;

• if we proceed with any of those projects the operator has refused to initiate, we may not receive any funding from the operator with respect to that project;

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• the operator may initiate exploration or development projects on a different schedule than we would prefer;

• the operator may propose greater capital expenditures than we wish, including expenditures to drill more wells or build more facilities on a project than we have funds for, which may mean that we cannot participate in those projects or participate in a substantial amount of the revenues from those projects; and

• the operator may not have sufficient expertise or resources.

Any of these events could significantly and adversely affect our anticipated exploration and development activities.

Our business may suffer if we lose key personnel.

We depend to a large extent on the services of certain key management personnel, including our executive officers and other key employees, the loss of any of whom could have a material adverse effect on our operations. We have entered into employment agreements with many of our key employees as a way to assist in retaining their services and motivating their performance. We do not maintain key-man life insurance with respect to any of our employees. Our success will also be dependent on our ability to continue to employ and retain skilled technical personnel.

We may experience difficulty in achieving and managing future growth.

We have experienced growth in the past primarily through the expansion of our drilling program. Future growth may place strains on our financial, technical, operational and administrative resources and cause us to rely more on project partners and independent contractors, possibly negatively affecting our financial position and results of operations. Our ability to grow will depend on a number of factors, including:

• our ability to obtain leases or options on properties, including those for which we have 3-D seismic data;

• our ability to acquire additional 3-D seismic data;

• our ability to identify and acquire new exploratory prospects;

• our ability to develop existing prospects;

• our ability to continue to retain and attract skilled personnel;

• our ability to maintain or enter into new relationships with project partners and independent contractors;

• the results of our drilling program;

• hydrocarbon prices; and

• our access to capital.

We may not be successful in upgrading our technical, operations and administrative resources or in increasing our ability to internally provide certain of the services currently provided by outside sources, and we may not be able to maintain or enter into new relationships with project partners and independent contractors. Our inability to achieve or manage growth may adversely affect our financial position and results of operations.

We may continue to enter into or exercise commodity derivative transactions to manage the price risks associated with our production, which may expose us to risk of financial loss and limit the benefit to us of increases in prices for oil and gas.

Because oil and gas prices are unstable, we periodically enter into price-risk-management transactions such as fixed-rate swaps, costless collars, three-way collars, puts, calls and basis differential swaps to reduce our exposure to price declines associated with a portion of our oil and gas production and thereby to achieve a more predictable cash flow. Additionally, some of our agreements for both the acquisition and disposition of oil and gas properties include arrangements whereby we will be required to make or entitled to receive additional payments if commodity prices exceed specified levels for certain periods of time. The use of these arrangements limits our ability to benefit from increases in the prices of oil and gas. Additionally, some derivative transactions may help to assure favorable pricing in the near term, but at the cost of limiting our ability to benefit from price increases that occur in subsequent years. At any given time our derivative arrangements may apply to only a portion of our production, including following the exercise of any then-existing derivative instruments, thereby providing only partial protection against declines in oil and gas prices. These arrangements may expose us to the risk of financial loss in certain circumstances, including instances in which production is less than expected, our customers fail to purchase contracted quantities of oil and gas or a sudden, unexpected event materially impacts oil or gas prices. In addition, the counterparties under our derivatives contracts may fail to fulfill their contractual obligations to us or there may be an adverse change in the expected differential between the underlying price in the derivative instrument and the actual prices received for our production. During periods of declining commodity prices, our commodity price derivative positions increase, which increases our counterparty exposure.

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As our derivatives expire, more of our future production will be sold at market prices unless we enter into additional derivative transactions. If we are unable to enter into new derivative contracts in the future at favorable pricing and for a sufficient amount of our production, our financial condition and results of operations could be materially adversely affected. It is also possible that a larger percentage of our future production will not be hedged as our derivative policies may change, which would result in our oil and gas revenue becoming more sensitive to commodity price changes.

The Commodity Futures Trading Commission has promulgated regulations to implement statutory requirements for swap transactions. These regulations are intended to implement a regulated market in which most swaps are executed on registered exchanges or swap execution facilities and cleared through central counterparties. While we believe that our use of swap transactions exempt us from certain regulatory requirements, the changes to the swap market due to increased regulation could significantly increase the cost of entering into new swaps or maintaining existing swaps, materially alter the terms of new or existing swap transactions and/or reduce the availability of new or existing swaps. If we reduce our use of swaps as a result of the Dodd-Frank Act and regulations, our results of operations may become more volatile and our cash flows may be less predictable.

Periods of high demand for oil field services and equipment and the ability of suppliers to meet that demand may limit our ability to drill and produce our oil and gas properties.

Our industry is cyclical and, from time to time, well service providers and related equipment and personnel may be in short supply. These shortages can cause escalating prices, delays in drilling and other exploration activities and the possibility of poor services coupled with potential damage to downhole reservoirs and personnel injuries. Such pressures may increase the actual cost of services, extend the time to secure such services and add costs for damages due to any accidents sustained from the overuse of equipment and inexperienced personnel. After a period of general declines in oilfield service and equipment costs following commodity price decreases, such costs could increase as commodity prices rise and may limit our ability to drill and produce our oil and gas properties.

If crude oil and natural gas prices decline to near or below the low levels experienced in 2015 and 2016 we could be required to record additional impairments of proved oil and gas properties that would constitute a charge to earnings and reduce our shareholders’ equity.

At the end of each quarter, the net book value of oil and gas properties, less related deferred income taxes, are limited to the “cost center ceiling” equal to (i) the sum of (A) the present value of estimated future net revenues from proved oil and gas reserves, less estimated future expenditures to be incurred in developing and producing the proved reserves computed using a discount factor of 10%, (B) the costs of unproved properties not being amortized, and (C) the lower of cost or estimated fair value of unproved properties included in the costs being amortized; less (ii) related income tax effects. Any excess of the net book value of oil and gas properties, less related deferred income taxes, over the cost center ceiling is recognized as an impairment of proved oil and gas properties. An impairment recognized in one period may not be reversed in a subsequent period even if higher commodity prices in the future result in a cost center ceiling in excess of the net book value of oil and gas properties, less related deferred income taxes.

The estimated future net revenues used in the cost center ceiling are calculated using the 12-Month Average Realized Price. We recognized no impairments of proved oil and gas properties for the years ended December 31, 2018 and December 31, 2017, but did recognize an impairment of $576.5 million for the year ended December 31, 2016, primarily due to declines in the 12-Month Average Realized Price of crude oil. Declines in the 12-Month Average Realized Price of crude oil in subsequent quarters would result in a lower present value of the estimated future net revenues from proved oil and gas reserves and may result in impairments of proved oil and gas properties.

Unproved properties, not being amortized, are assessed on a quarterly basis to determine whether or not and to what extent proved reserves have been assigned to the properties or if an impairment has occurred, in which case the related costs along with associated capitalized interest are added to the oil and gas property costs subject to amortization. This assessment requires the use of judgment and estimates all of which may prove to be inaccurate. If crude oil and natural gas prices decline from their current levels, we may need to write down the carrying value of our unproved oil and gas properties, which will result in increased DD&A for future periods.

An impairment does not impact cash flows from operating activities but does reduce earnings and our shareholders’ equity and increases the balance sheet leverage as measured by debt-to-total capitalization. The risk that we will be required to recognize impairments of our proved oil and gas properties increases during periods of low or declining oil or gas prices. In addition, impairments would occur if we were to experience sufficient downward adjustments to our estimated proved reserves or the present value of estimated future net revenues, as further discussed under “-Our reserve data and estimated discounted future net cash flows are estimates based on assumptions that may be inaccurate and are based on existing economic and operating conditions that may change in the future.” We have in the past and could in the future incur additional impairments of oil and gas properties, particularly if oil and natural gas prices decline or remain at low levels.

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A valuation allowance on a deferred tax asset could reduce our earnings.

Deferred tax assets are recorded for net operating losses and temporary differences between the book and tax basis of assets and liabilities expected to produce tax deductions in future periods. The ultimate realization of the deferred tax assets is dependent upon the generation of future taxable income during the periods in which those deferred tax assets would be deductible. We assess the realizability of the deferred tax assets each period by considering whether it is more likely than not that all or a portion of our deferred tax assets will not be realized. If we conclude that it is more likely than not that the deferred tax assets will not be realized, we record a valuation allowance against the net deferred tax asset, which has occurred since 2015 where we recorded a valuation allowance, reducing the net deferred tax asset to zero. This valuation allowance reduces earnings and our shareholders’ equity and increases the balance sheet leverage as measured by debt-to-total capitalization. The valuation allowance remained as of December 31, 2018, and will remain until such time, if ever, that we can determine that the net deferred tax assets are more likely than not to be realized.

The taxation of independent producers is subject to change, and federal and state proposals being considered could increase our cost of doing business.

From time to time, legislative proposals are made that would, if enacted into law, make significant changes to United States tax laws, including the elimination or postponement of certain key United States federal income tax incentives currently available to independent producers of oil and natural gas. Proposals that would significantly affect us could include a repeal of the expensing of intangible drilling costs, a repeal of the percentage depletion allowance and an increase in the amortization period of geological and geophysical expenses. These changes, if enacted, will make it more costly for us to explore for and develop our oil and natural gas resources.

We may incur losses as a result of title deficiencies.

We purchase working and revenue interests in the oil and gas leasehold interests upon which we will perform our exploration activities from third parties or directly from the mineral fee owners. The existence of a material title deficiency can render a lease worthless and can adversely affect our results of operations and financial condition. Title insurance covering mineral leaseholds is not generally available and, in all instances, we forego the expense of retaining lawyers to examine the title to the mineral interest to be placed under lease or already placed under lease until the drilling block is assembled and ready to be drilled. Even then, the cost of performing detailed title work can be expensive. We may choose to forgo detailed title examination by title lawyers on a portion of the mineral leases that we place in a drilling unit or conduct less title work than we have traditionally performed. As is customary in our industry, we generally rely upon the judgment of oil and gas lease brokers or independent landmen who perform the field work in examining records in the appropriate governmental offices and abstract facilities before attempting to acquire or place under lease a specific mineral interest and before drilling a well on a leased tract. We, in some cases, perform curative work to correct deficiencies in the marketability or adequacy of the title to us. The work might include obtaining affidavits of heirship or causing an estate to be administered. In cases involving more serious title problems, the amount paid for affected oil and gas leases can be generally lost and the target area can become undrillable. The failure of title may not be discovered until after a well is drilled, in which case we may lose the lease and the right to produce all or a portion of the minerals under the property.

The threat and impact of terrorist attacks, cyber attacks or similar hostilities may adversely impact our operations.

We face various security threats to the safety of our employees; threats to the security of our infrastructure or third party facilities and infrastructure, such as processing plants and pipelines; and threats from terrorist acts and acts of war. We also face cyber security and other threats including attempts by third parties to gain unauthorized access to sensitive information or to render data or systems unusable. These threats relate both to information relating to us and to third parties with whom we do business including landowners, employees, suppliers, customers and others. There can be no assurance that the procedures and controls we use to monitor these threats and mitigate our exposure to them will be sufficient in preventing them from materializing. If any of these events were to materialize, they could lead to losses of sensitive information, critical infrastructure, personnel or capabilities essential to our operations and could have a material adverse effect on our reputation, financial condition, results of operations, or cash flows.

In particular, the oil and gas industry has become increasingly dependent on digital technologies to conduct day-to-day operations including certain exploration, development and production activities. For example, software programs are used to interpret seismic data, manage drilling activities, conduct reservoir modeling and reserves estimation, and to process and record financial and operating data. We rely extensively on digital technology, including information technology systems and related infrastructure as well as internet sites, computer software, data hosting facilities, cloud application and services and other hardware and platforms, some of which are hosted by third parties to store, transmit, process and record sensitive information (including trade secrets, employee information and financial and operating data), communicate with our employees and business associates, analyze seismic and drilling information, estimate quantities of oil and gas reserves and for many other activities related to our business. The complexity of the technologies needed to explore for and develop oil and gas makes certain information particularly attractive to thieves.

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Our business associates, including vendors, service providers, operating partners, purchasers of our production, and financial institutions, are also dependent on digital technology and some may be provided limited access to our sensitive information or our information systems and related infrastructure in the ordinary course of business. As dependence on digital technologies has increased so has the risk of cyber incidents, including deliberate attacks and unintentional events. Cybersecurity threat actors are becoming more sophisticated and coordinated in their attempts to access other parties’ information technology systems and data, including those of cloud providers and third parties with which such other parties conduct business. Our technologies, systems and networks, and those of others with whom we do business, may become the target of cyber-attacks or information security breaches that could result in the unauthorized release, gathering, monitoring, misuse, loss or destruction of proprietary and other information, theft of property or other disruption of our business operations. These may result from among other things, unauthorized access, denial-of-service attacks, malicious software, data privacy and other breaches by employees, or others with authorized access, cyber or phishing-attacks, ransomware, malware, social engineering, physical breaches or other actions. A cyber incident involving our information systems and related infrastructure, or that of our business associates, could disrupt our business plans and negatively impact our operations in a variety of ways, including, but no limited to, the following:

• Unauthorized access to seismic data, reserves information and other operational incidents, or other sensitive or proprietary information could have a negative impact on our ability to compete for oil and natural gas resources;

• Data corruption, or other operational disruption during drilling or completion activities could result in failure to reach the intended target or a drilling or other operational incident, personal injury, damage to equipment or the subsurface or otherwise adversely affect our operations;

• Data corruption or operational disruptions of production-related infrastructure could result in a loss of production, accidental discharge, and other operational incidents;

• A cyber attack on, or other disruptions to a vendor or service provider or other third party could result in disruptions which could delay or halt our operations;

• A cyber attack on third-party gathering, pipeline, or other transportation systems could delay or prevent us from transporting and marketing our production;

• A cyber attack on our automated and surveillance systems could cause a loss in production, potential environmental hazards and other operational problems; and

• A corruption or loss of our financial or operating data could result in events of non-compliance which could then lead to regulatory fines or penalties.

In addition, certain cyber incidents, such as surveillance, may remain undetected for an extended period. We may be the target of such attacks and, as cyber threats continue to evolve, we may be required to expend significant additional resources to continue to modify or enhance our protective measures or to investigate and remediate any security vulnerabilities. Additionally, the growth of cyber attacks has resulted in evolving legal and compliance matters which impose significant costs that are likely to increase over time.

We cannot assess the extent of either the threat or the potential impact of future terrorist or cyber security attacks on the energy industry in general, and on us in particular, either in the short-term or in the long-term. Uncertainty surrounding such attacks may affect our operations in unpredictable ways.

Certain anti-takeover provisions may affect your rights as a shareholder.

Our articles of incorporation authorize our board of directors to set the terms of and issue preferred stock without shareholder approval. Our board of directors could use the preferred stock as a means to delay, defer or prevent a takeover attempt that a shareholder might consider to be in our best interest. In addition, our revolving credit facility, our indentures governing our senior notes and our existing Preferred Stock contain terms that may restrict our ability to enter into change of control transactions, including requirements to repay borrowings under our revolving credit facility and to offer to repurchase senior notes or to redeem our Preferred Stock, in either event upon a change in control, as determined under the relevant documents relating to such indebtedness or Preferred Stock. Furthermore, provisions in our bylaws, among other things, impose requirements on shareholders who wish to make nominations for the election of directors, propose other actions at shareholder meetings or take action to call shareholder meetings. These provisions, along with specified provisions of the Texas Business Organizations Code and our articles of incorporation and bylaws, may discourage or impede transactions involving actual or potential changes in our control, including transactions that otherwise could involve payment of a premium over prevailing market prices to holders of our common stock.

Failure to adequately protect critical data and technology systems and the impact of data privacy regulation could materially affect us.

Information technology solution failures, network disruptions and breaches of data security could disrupt our operations by causing delays or canceling or impeding processing of transactions and reporting financial results, resulting in the unintentional

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disclosure of employee, royalty owner, or other third party or our information, or damage to our reputation. There can be no assurance that a system failure or data security breach will not have a material adverse effect on our operations, financial condition, results of operations or cash flows. In addition, new laws and regulations governing data privacy and the unauthorized disclosure of confidential information, including the European Union General Data Protection Regulation and recent California legislation, pose increasingly complex compliance challenges and potentially elevate costs, and any failure to comply with these laws and regulations could result in significant penalties and legal liability.

Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

Information regarding our properties is included in “Item 1. Business” above and in “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” and “Note 4. Property and Equipment, Net” of the Notes to our Consolidated Financial Statements included in “Item 8. Financial Statements and Supplementary Data,” which information is incorporated herein by reference.

Item 3. Legal Proceedings

From time to time, we are party to certain legal actions and claims arising in the ordinary course of business. While the outcome of these events cannot be predicted with certainty, management does not currently expect these matters to have a materially adverse effect on our financial position or results of operations.

Barrow-Shaver Litigation

On September 24, 2014 an unfavorable jury verdict was delivered against the Company in a case entitled Barrow-Shaver Resources Company v. Carrizo Oil & Gas, Inc. in the amount of $27.7 million. On January 5, 2015, the court entered a judgment awarding the verdict amount plus $2.9 million in attorneys’ fees plus pre-judgment interest. On January 31, 2017, the Twelfth Court of Appeals at Tyler, Texas reversed the trial court decision and rendered judgment in favor of the Company, declaring that the plaintiff take nothing on any of its claims. The plaintiff petitioned the Texas Supreme Court for review, which was granted, and oral arguments were held on December 4, 2018. The payment of damages per the original judgment was superseded by posting a bond in the amount of $25.0 million, which will remain outstanding pending resolution of the appeals process (which could take an extended period of time) or agreement of the parties.

The case was filed September 19, 2012 in the 7th Judicial District Court of Smith County, Texas and arises from an agreement between the plaintiff and the Company whereby the plaintiff could earn an assignment of certain of the Company’s leasehold interests in Archer and Baylor counties, Texas for each commercially productive oil and gas well drilled by the plaintiff on acreage covered by the agreement. The agreement contained a provision that the plaintiff had to obtain the Company’s written consent to any assignment of rights provided by such agreement. The plaintiff subsequently entered into a purchase and sale agreement with a third-party purchaser allowing the third-party purchaser to purchase rights in approximately 62,000 leasehold acres, including the rights under the agreement with the Company, for approximately $27.7 million. The plaintiff requested the Company’s consent to make the assignment to the third-party purchaser and the Company refused. The plaintiff alleged that, as a result of the Company’s refusal, the third-party purchaser terminated such purchase and sale agreement. The plaintiff sought damages for breach of contract, tortious interference with existing contract and other grounds in an amount not to exceed $35.0 million plus exemplary damages and attorneys’ fees. As mentioned previously, the Twelfth Court of Appeals at Tyler, Texas found in favor of the Company on all grounds.

Item 4. Mine Safety Disclosures

Not applicable.

PART II

Item 5. Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities

Market Information. Our common stock, par value $0.01 per share, trades on the NASDAQ Global Select Market under the symbol “CRZO.” As of February 22, 2019, there were an estimated 49 owners of record of our common stock. See “Note 10. Shareholders’ Equity” of the Notes to our Consolidated Financial Statements for further discussion.

Common Stock Dividends. We have not paid any dividends on our common stock in the past and do not intend to pay such dividends in the foreseeable future. We currently intend to retain any earnings for the future operation and development of our business, including exploration, development and acquisition activities. Our revolving credit facility, our senior notes and the terms of our preferred stock restrict our ability to pay dividends. See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources.”

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Purchases of Equity Securities by the Issuer and Affiliated Purchasers. For the year ended December 31, 2018, there were no purchases made by the Company or affiliated purchasers (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of shares of the Company’s common stock.

Common Stock Total Return Performance Graph. The following performance graph contained in this section is not deemed to be “soliciting material” or to be “filed” with the SEC, and will not be incorporated by reference into any other filings under the Securities Act of 1933, as amended (the “Securities Act”) or Securities Exchange Act of 1934, except to the extent that the Company specifically incorporates it by reference into such filing. Shareholders are cautioned against drawing any conclusions from the data contained therein, as past results are not necessarily indicative of future financial performance.

The performance graph below presents a comparison of the yearly percentage change in the cumulative total return on our common stock over the period from December 31, 2013 to December 31, 2018, with the cumulative total return of the S&P 500 Index and the Dow Jones U.S. Exploration & Production Index, over the same period.

The graph assumes an investment of $100 (with reinvestment of all dividends) was invested on December 31, 2013, in our common stock at the closing market price at the beginning of this period and in each of the other two indexes.

	CRZO	S&P 500	DJ U.S. E&P
December 31, 2013	$100	$100	$100
December 31, 2014	$93	$114	$89
December 31, 2015	$66	$115	$68
December 31, 2016	$83	$129	$85
December 31, 2017	$48	$157	$86
December 31, 2018	$25	$150	$71

See “Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters” for information regarding shares of common stock authorized for issuance under our stock incentive plans.

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Item 6. Selected Financial Data

Our financial information set forth below for each of the five years in the period ended December 31, 2018, has been derived from information included in our audited consolidated financial statements. This information should be read in conjunction with “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our Consolidated Financial Statements and related Notes included in “Item 8. Financial Statements and Supplementary Data.”

	Years Ended December 31,
	2018			2017			2016			2015			2014
	(In thousands, except per share amounts)
Statements of Operations Information:
Total revenues		$1,065,942			$745,888			$443,594			$429,203			$710,187
Total costs and expenses	656,342			654,748			1,119,068			1,727,963			359,977
Income (loss) from continuing operations	404,427			87,110			(675,474		)	(1,157,885		)	222,283
Net income (loss) attributable to common shareholders	376,076			78,467			(675,474		)	(1,155,154		)	226,343
Income (loss) from continuing operations per common share:
Basic		$4.73			$1.19			($11.27	)		($22.50	)		$4.90
Diluted		$4.64			$1.18			($11.27	)		($22.50	)		$4.81
Net income (loss) attributable to common shareholders per common share:
Basic		$4.40			$1.07			($11.27	)		($22.45	)		$4.99
Diluted		$4.32			$1.06			($11.27	)		($22.45	)		$4.90
Weighted average common shares outstanding:
Basic	85,509			73,421			59,932			51,457			45,372
Diluted	87,143			73,993			59,932			51,457			46,194
Statements of Cash Flows Information:
Net cash provided by operating activities from continuing operations		$653,555			$422,981			$272,768			$378,735			$502,275
Net cash used in investing activities from continuing operations	(795,968		)	(1,159,452		)	(619,832		)	(673,376		)	(940,676		)
Net cash provided by financing activities from continuing operations	135,155			741,817			308,340			330,767			300,290
Balance Sheet Information:
Total assets	3,185,100			2,778,304			1,626,327			2,007,246			2,962,305
Long-term debt	1,633,591			1,629,209			1,325,418			1,236,017			1,332,175
Preferred stock	174,422			214,262			—			—			—
Total shareholders’ equity	980,904			370,897			23,458			444,054			1,103,441

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our Consolidated Financial Statements and related Notes included in “Item 8. Financial Statements and Supplementary Data.” The following discussion and analysis contains statements, including, but not limited to, statements relating to our plans, strategies, objectives, and expectations. Please see “Forward-Looking Statements” and “Item 1A. Risk Factors” for further details about these statements.

General Overview

Significant Developments in 2018

• In the first quarter of 2018, we closed on divestitures of substantially all of our assets in the Niobrara Formation and a portion of our assets in the Eagle Ford for aggregate net proceeds of approximately $381.3 million. In addition, we could receive contingent consideration of $5.0 million per year if crude oil prices exceed specified thresholds for each of the years of 2018 through 2020 as part of the Niobrara divestiture.

• In the first quarter of 2018, we redeemed 50,000 shares of our 8.875% redeemable preferred stock (the “Preferred Stock”), representing 20% of the then issued and outstanding Preferred Stock, for $50.5 million.

• On July 11, 2018, we closed on the divestiture of certain non-operated assets in the Delaware Basin for aggregate net proceeds of $30.9 million.

• On August 17, 2018, we completed a public offering of 9.5 million shares of our common stock at a price per share of $22.55. We used the proceeds of $213.7 million, net of offering costs, to fund the Devon Acquisition (described below) and for general corporate purposes.

• On October 17, 2018, we closed on the acquisition of oil and gas properties with Devon Energy Production Company, L.P. (“Devon”), a subsidiary of Devon Energy Corporation (the “Devon Acquisition”). The estimated aggregate net consideration of $196.6 million remains subject to post-closing adjustments.

• During 2018, our borrowing base increased from $830.0 million to $1.3 billion, with an elected commitment amount of $1.1 billion.

• In 2018, we fully redeemed the remaining $450.0 million aggregate principal amount outstanding of our 7.50% Senior Notes due 2020 (the “7.50% Senior Notes”).

• Our 2018 drilling, completion, and infrastructure (“DC&I”) capital expenditures were $844.4 million, of which 62% was in the Eagle Ford with the remaining 38% in the Delaware Basin. The midpoint of our current 2019 DC&I capital expenditure plan of $550.0 million is approximately 35% lower than our 2018 actual DC&I capital expenditures. See “—Liquidity and Capital Resources—2019 DC&I Capital Expenditure Plan and Funding Strategy” for additional details.

Recent Developments

• For the year ended December 31, 2018, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration were exceeded. As a result, in January 2019, we paid $50.0 million and received $10.0 million from settlement of these contingent consideration arrangements.

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Results of Operations

Comparison of Results Between Years Ended December 31, 2018 and 2017 and Between Years Ended December 31, 2017 and 2016

Production volumes

The following table summarizes total production volumes and daily production volumes for the periods indicated:

	Years Ended December 31,			Amount Change Between				Percent Change Between
	2018	2017	2016	2018/2017		2017/2016		2018/2017		2017/2016
Total production volumes
Crude oil (MBbls)	14,232	12,566	9,423	1,666		3,143		13	%	33	%
NGLs (MBbls)	3,701	2,327	1,788	1,374		539		59	%	30	%
Natural gas (MMcf)	24,639	28,472	25,574	(3,833	)	2,898		(13	%)	11	%
Total barrels of oil equivalent (MBoe)	22,040	19,639	15,473	2,401		4,166		12	%	27	%
Daily production volumes by product
Crude oil (Bbls/d)	38,992	34,428	25,745	4,564		8,683		13	%	34	%
NGLs (Bbls/d)	10,139	6,376	4,885	3,763		1,491		59	%	31	%
Natural gas (Mcf/d)	67,503	78,006	69,873	(10,503	)	8,133		(13	%)	12	%
Total barrels of oil equivalent (Boe/d)	60,382	53,805	42,276	6,577		11,529		12	%	27	%
Daily production volumes by region (Boe/d)
Eagle Ford	37,591	37,825	30,664	(234	)	7,161		(1	%)	23	%
Delaware Basin	22,609	6,713	1,115	15,896		5,598		237	%	502	%
Other	182	9,267	10,497	(9,085	)	(1,230	)	(98	%)	(12	%)
Total barrels of oil equivalent (Boe/d)	60,382	53,805	42,276	6,577		11,529		12	%	27	%

The increase in production volumes in 2018 as compared to 2017 is primarily due to production from new wells in the Delaware Basin, primarily drilled on properties from the ExL Acquisition, as well as in Eagle Ford, partially offset by the divestitures in Utica and Marcellus in the fourth quarter of 2017 and Niobrara and Eagle Ford in the first quarter of 2018 and normal production declines.

The increase in production volumes in 2017 as compared to 2016 is primarily due to production from new wells in the Eagle Ford and Delaware Basin and the addition of production from our acquisition of oil and gas properties located in the Eagle Ford Shale from Sanchez Energy Corporation and SN Cotulla Assets, LLC, a subsidiary of Sanchez Energy Corporation, in the fourth quarter of 2016 (the “Sanchez Acquisition”) and the ExL Acquisition in the third quarter of 2017, partially offset by the divestitures in Utica and Marcellus in the fourth quarter of 2017 and normal production declines.

Average realized prices and revenues

The following table summarizes average realized prices and revenues for the periods indicated:

	Years Ended December 31,						Amount Change Between					Percent Change Between
	2018		2017		2016		2018/2017			2017/2016		2018/2017		2017/2016
Average realized prices
Crude oil ($ per Bbl)		$64.05		$50.39		$40.12		$13.66			$10.27	27	%	26	%
NGLs ($ per Bbl)	26.10		20.37		12.54		5.73			7.83		28	%	62	%
Natural gas ($ per Mcf)	2.35		2.29		1.69		0.06			0.60		3	%	36	%
Total average realized price ($ per Boe)		$48.36		$37.98		$28.67		$10.38			$9.31	27	%	32	%
Revenues (In thousands)
Crude oil		$911,554		$633,233		$378,073		$278,321			$255,160	44	%	67	%
NGLs	96,585		47,405		22,428		49,180			24,977		104	%	111	%
Natural gas	57,803		65,250		43,093		(7,447		)	22,157		(11	%)	51	%
Total revenues		$1,065,942		$745,888		$443,594		$320,054			$302,294	43	%	68	%

The increase in revenues in 2018 as compared to 2017 is primarily due to higher crude oil prices and production.

The increase in revenues in 2017 as compared to 2016 is also primarily due to higher crude oil prices and production.

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Lease operating expense

The following table summarizes lease operating expense for the periods indicated:

	Years Ended December 31,
	2018				2017				2016
	(In thousands, except per Boe amounts)
	Amount		Per Boe		Amount		Per Boe		Amount		Per Boe
Lease operating expense		$161,596		$7.33		$139,854		$7.12		$98,717		$6.38

The increase in lease operating expense in 2018 as compared to 2017 is primarily due to costs associated with increased production. The increase in lease operating expense per Boe between the periods is primarily due to processing fees for certain of our natural gas and NGL processing contracts that, effective January 1, 2018, are presented in lease operating expense as a result of the adoption of ASC 606 as well as an increased proportion of total production from crude oil properties, which have a higher operating cost per Boe than natural gas properties, as a result of the divestiture in Marcellus in the fourth quarter of 2017. These increases were partially offset by the increased proportion of production from properties acquired in the ExL Acquisition, which have lower operating costs per Boe than our other Delaware Basin and Eagle Ford properties.

The increase in lease operating expense in 2017 as compared to 2016 is primarily due to increased production and increased workover costs primarily on wells acquired in the Sanchez Acquisition. The increase in lease operating expense per Boe between the periods is primarily due to the workover costs described above as well as to an increased proportion of total production from crude oil properties, which have a higher operating cost per Boe than natural gas properties.

Production and ad valorem taxes

The following table summarizes production taxes and ad valorem taxes for the periods indicated:

	Years Ended December 31,
	2018				2017				2016
	(In thousands, except % of revenues amounts)
	Amount		% of Revenues		Amount		% of Revenues		Amount		% of Revenues
Production taxes		$50,591	4.7	%		$32,509	4.4	%		$19,046	4.3	%
Ad valorem taxes	10,422		1.0	%	7,267		1.0	%	5,559		1.3	%

The increase in production taxes in 2018 as compared to 2017 is primarily due to the increase in crude oil and NGL revenues. The increase in production taxes as a percentage of revenues between the periods is due to the divestiture of substantially all of our assets in Marcellus in the fourth quarter of 2017, as our production in Marcellus was not subject to production taxes. The increase in ad valorem taxes in 2018 as compared to 2017 is due to new wells drilled in the Eagle Ford and new wells drilled or acquired in the Delaware Basin and higher property tax valuations as a result of the increase in crude oil prices, partially offset by a reduction in ad valorem taxes resulting from the divestitures discussed above.

The increase is production taxes in 2017 as compared to 2016 is primarily due to the increase in crude oil, NGL, and natural gas revenues. The increase in production taxes as a percentage of revenues between the periods is due primarily to a decreased proportion of total revenues attributable to Marcellus production, which is not subject to production taxes. The increase in ad valorem taxes in 2017 as compared to 2016 is due to new wells drilled in the Eagle Ford and Delaware Basin in 2016 and new wells acquired in the Sanchez Acquisition in December 2016. The decrease in ad valorem taxes as a percentage of revenue between the periods is primarily due to the timing of when wells are included in the ad valorem tax assessment as wells drilled and producing during 2017 would not be included in the ad valorem tax assessment until 2018.

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Depreciation, depletion and amortization

The following table sets forth the components of our depreciation, depletion and amortization (“DD&A”) expense for the periods indicated:

	Years Ended December 31,
	2018				2017				2016
	(In thousands, except per Boe amounts)
	Amount		Per Boe		Amount		Per Boe		Amount		Per Boe
DD&A of proved oil and gas properties		$295,044		$13.39		$257,057		$13.09		$208,849		$13.50
Depreciation of other property and equipment	2,522		0.11		2,484		0.13		2,613		0.17
Amortization of other assets	598		0.03		1,249		0.06		1,136		0.07
Accretion of asset retirement obligations	1,366		0.06		1,799		0.09		1,364		0.09
DD&A		$299,530		$13.59		$262,589		$13.37		$213,962		$13.83

DD&A expense for 2018 increased $36.9 million compared to 2017. The increase in DD&A expense is attributable to increased production, as well as an increase in the DD&A rate per Boe. The increase in the DD&A rate per Boe is due primarily to an increase to proved oil and gas properties as a result of our ongoing capital expenditure program, partially offset by the reduction in proved oil and gas properties as a result of the divestitures in Niobrara and Eagle Ford in the first quarter of 2018 and an increase in proved oil and gas reserves.

DD&A expense for 2017 increased $48.6 million compared to 2016. The increase in DD&A expense is attributable to increased production, partially offset by the decrease in the DD&A rate per Boe. The decrease in the DD&A rate per Boe is due primarily to impairments of our proved oil and gas properties recorded during 2016, reductions in estimated future development costs as a result of reduced service costs that occurred in the fourth quarter of 2016, and the addition of crude oil reserves in the fourth quarter of 2017, partially offset by the allocation to proved oil and gas properties related to the ExL Acquisition.

Impairment of proved oil and gas properties

Details of the 12-Month Average Realized Price of crude oil for 2018, 2017, and 2016 and impairments of proved oil and gas properties for 2016 are summarized in the table below:

	Years Ended December 31,
	2018			2017			2016
Impairment of proved oil and gas properties (In thousands)		$—			$—		$576,540
Crude Oil 12-Month Average Realized Price ($/Bbl) - Beginning of period	$49.87			$39.60			$47.24
Crude Oil 12-Month Average Realized Price ($/Bbl) - End of period	$63.80			$49.87			$39.60
Crude Oil 12-Month Average Realized Price percentage increase (decrease) during period	28		%	26		%	(16	%)

We did not recognize impairments of proved oil and gas properties for the years ended December 31, 2018 and 2017. Primarily due to declines in the 12-Month Average Realized Price of crude oil, we recognized impairments of proved oil and gas properties in 2016.

General and administrative expense, net

The following table summarizes general and administrative expense, net for the periods indicated:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
General and administrative expense, net		$68,617		$66,229		$74,972

The increase in general and administrative expense, net in 2018 as compared to 2017 is primarily due to an increase in personnel costs and higher annual bonuses awarded in the first quarter of 2018 compared to the first quarter of 2017.

The decrease in general and administrative expense, net in 2017 as compared to 2016 is primarily due to a decrease in stock-based compensation, net as a result of a decrease in the fair value of stock appreciation rights for 2017 due to exercises and expirations and a decrease in fair value of stock appreciation rights in 2017 as compared to an increase in the fair value of stock appreciation rights in 2016, partially offset by higher compensation costs for 2017 as compared to 2016, resulting from an increase in personnel as well as higher annual bonuses awarded in the first quarter of 2017 compared to the first quarter of 2016.

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(Gain) loss on derivatives, net

The following table sets forth the components of our (gain) loss on derivatives, net for the periods indicated:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Crude oil derivative instruments		($9,726	)		$22,839			$23,609
NGL derivative instruments	4,439			1,322			—
Natural gas derivative instruments	(421		)	(15,399		)	19,584
Deferred premium obligations	1,875			18,401			5,880
Contingent consideration arrangements	(2,876		)	31,940			—
(Gain) loss on derivatives, net		($6,709	)		$59,103			$49,073

The gain on derivatives, net in 2018 was primarily due to the downward shift in the futures curve of forecasted crude oil prices from January 1, 2018 to December 31, 2018 on crude oil derivative instruments outstanding at the beginning of 2018 as well as on our Contingent ExL Consideration and the downward shift in the futures curve of forecasted crude oil prices subsequent to contract executions of new crude oil derivative instruments. The gain was partially offset by deferred premium obligations incurred during 2018, the effect of the downward shift in the futures curve of forecasted crude oil prices mentioned above on our Contingent Niobrara Consideration and Contingent Utica Consideration, and the upward shift in crude oil and NGL settlement prices during the majority of 2018.

The loss on derivatives, net in 2017 was primarily due to the upward shift in the futures curve of forecasted crude oil and NGL prices subsequent to contract executions of new crude oil and NGL derivative instruments, as well as the upward shift in the futures curve of forecasted crude oil prices subsequent to the acquisition date related to the Contingent ExL Consideration. Additionally, we incurred approximately $18.4 million in deferred premium obligations during 2017. The loss was partially offset by the downward shift in the futures curve of forecasted crude oil and natural gas prices from January 1, 2017 to December 31, 2017 on crude oil and natural gas derivative instruments outstanding at the beginning of 2017.

The loss on derivatives, net in 2016 was primarily due to the upward shift in the futures curve of forecasted crude oil prices from January 1, 2016 to December 31, 2016 on crude oil derivative instruments outstanding at the beginning of 2016 as well as the upward shift in the futures curve of forecasted crude oil and natural gas prices subsequent to contract executions of new crude oil and natural gas derivative instruments. Additionally, we incurred approximately $5.9 million in deferred premium obligations during 2016.

Interest expense, net

The following table sets forth the components of our interest expense, net for the periods indicated:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Interest expense on Senior Notes		$73,534			$95,272			$85,819
Interest expense on revolving credit facility	20,910			8,293			3,907
Amortization of debt issuance costs, premiums, and discounts	4,077			4,529			5,565
Other interest expense	531			1,029			1,138
Capitalized interest	(36,639		)	(28,253		)	(17,026		)
Interest expense, net		$62,413			$80,870			$79,403

The decrease in interest expense, net in 2018 as compared to 2017 is primarily due to reduced interest expense as a result of the redemptions of the 7.50% Senior Notes in the fourth quarter of 2017 and the first and fourth quarters of 2018 as well as an increase in capitalized interest as a result of higher average balances of unevaluated leasehold and seismic costs for 2018 as compared to 2017, primarily due to the ExL Acquisition in the third quarter of 2017 and the Devon Acquisition in the fourth quarter of 2018. The decrease was partially offset by interest expense on $250.0 million aggregate principal amount of our 8.25% Senior Notes that were issued in the third quarter of 2017 and increased borrowings and associated interest expense on our revolving credit facility for 2018 as compared to 2017.

The increase in interest expense, net in 2017 as compared to 2016 is primarily due to interest expense on the $250.0 million aggregate principal amount of our 8.25% Senior Notes that were issued in the third quarter of 2017 and an increase in interest expense on our revolving credit facility as a result of increased borrowings in 2017 as compared to 2016, partially offset by an

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increase in capitalized interest as a result of higher average balances of unevaluated leasehold and seismic costs for 2017 as compared to 2016, primarily due to the ExL Acquisition in the third quarter of 2017.

Loss on extinguishment of debt

As a result of our redemption of $450.0 million aggregate principal amount of our 7.50% Senior Notes in 2018, we recorded a loss on extinguishment of debt of $9.6 million for the year ended December 31,2018, which included redemption premiums of $6.0 million paid to redeem the notes and non-cash charges of $3.6 million attributable to the write-off of unamortized premium and debt issuance costs.

As a result of our redemption of $150.0 million aggregate principal amount of our 7.50% Senior Notes in 2017, we recorded a loss on extinguishment of debt of $4.2 million for the year ended December 31,2017, which included a redemption premium of $2.8 million paid to redeem the notes and non-cash charges of $1.4 million attributable to the write-off of unamortized premium and debt issuance costs.

Income taxes and deferred tax assets valuation allowance

The effective income tax rate for the years ended December 31, 2018, 2017, and 2016 was 1.3%, 4.4%, and 0.0%, respectively, which were nominal as a result of maintaining a full valuation allowance against our net deferred tax assets. For the years ended December 31, 2018 and 2017, we recognized income tax expense of $5.2 million and $4.0 million, respectively, related to the Texas franchise tax due to an increase in the apportionment of income to the state of Texas as a result of our divestitures in the fourth quarter of 2017 and first quarter of 2018.

For the year ended December 31, 2016, the effective income tax rate was 0.0% as a result of a full valuation allowance against our net deferred tax assets driven by the impairments of proved oil and gas properties we recognized beginning in the third quarter of 2015 and continuing through the third quarter of 2016.

For each of the years ended December 31, 2018, 2017, and 2016, we maintained a full valuation allowance against our deferred tax assets based on our conclusion, considering all available evidence (both positive and negative), that it was more likely than not that the deferred tax assets would not be realized. A significant item of objective negative evidence considered was the cumulative pre-tax loss incurred over the three-year period ended December 31, 2018, primarily due to impairments of proved oil and gas properties recognized in the first three quarters of 2016, which limits our ability to consider subjective positive evidence, such as its projections of future taxable income.

Dividends on preferred stock

For the years ended December 31, 2018 and 2017, we declared and paid cash dividends of $18.2 million and $7.8 million, respectively, on our Preferred Stock. There were no dividends on our Preferred Stock for the year ended December 31, 2016.

Loss on redemption of preferred stock

During the first quarter of 2018, we redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and $0.5 million accrued and unpaid dividends. We recognized a $7.1 million loss on the redemption due to the excess of the $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock.

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Liquidity and Capital Resources

2019 DC&I Capital Expenditure Plan and Funding Strategy. Our 2019 DC&I capital expenditure plan is $525.0 million to $575.0 million, of which approximately 59% is allocated to the Eagle Ford and the remaining 41% is allocated to the Delaware Basin. We currently intend to finance our 2019 DC&I capital expenditure plan primarily from the sources described below under “—Sources and Uses of Cash.” Our capital program could vary depending upon various factors, including, but not limited to, the availability of drilling rigs and completion crews, the cost of completion services, acquisitions and divestitures of oil and gas properties, land and industry partner issues, our available cash flow and financing, success of drilling programs, weather delays, commodity prices, market conditions, the acquisition of leases with drilling commitments and other factors. The following is a summary of our 2018 capital expenditures:

	Three Months Ended								Year Ended
	March 31, 2018		June 30, 2018		September 30, 2018		December 31, 2018		December 31, 2018
	(In thousands)
DC&I
Eagle Ford		$135,677		$101,249		$149,386		$136,644		$522,956
Delaware Basin	73,892		116,743		91,761		38,768		321,164
Other	284		—		—		—		284
Total DC&I	209,853		217,992		241,147		175,412		844,404
Leasehold and seismic	5,520		6,129		6,668		4,034		22,351
Total (1)		$215,373		$224,121		$247,815		$179,446		$866,755

(1) Capital expenditures exclude acquisitions of oil and gas properties, capitalized general and administrative expense, interest expense and asset retirement costs.

Sources and Uses of Cash. Our primary use of cash is related to our DC&I capital expenditures and, to a lesser extent, our leasehold and seismic capital expenditures. For the year ended December 31,2018, we funded our capital expenditures with cash provided by operations and borrowings under our revolving credit facility. Potential sources of future liquidity include the following:

• Cash provided by operations. Cash flows from operations are highly dependent on crude oil prices. As such, we hedge a portion of our forecasted production to reduce our exposure to commodity price volatility in order to achieve a more predictable level of cash flows.

• Borrowings under revolving credit facility. As of February 22, 2019, our revolving credit facility had a borrowing base of $1.3 billion, with an elected commitment amount of $1.1 billion, and $819.0 million of borrowings outstanding. The amount we are able to borrow is subject to compliance with the financial covenants and other provisions of the credit agreement governing our revolving credit facility.

• Securities offerings. As situations or conditions arise, we may choose to issue debt, equity or other securities to supplement our cash flows. However, we may not be able to obtain such financing on terms that are acceptable to us, or at all. See “Note 10. Shareholders’ Equity” of the Notes to our Consolidated Financial Statements for details of our August 2018 common stock offering.

• Divestitures. We may consider divesting certain properties or assets that are not part of our core business or are no longer deemed essential to our future growth, provided we are able to divest such assets on terms that are acceptable to us. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” of the Notes to our Consolidated Financial Statements for further details.

• Joint ventures. Joint ventures with third parties through which such third parties fund a portion of our exploration activities to earn an interest in our exploration acreage or purchase a portion of interests, or both.

Overview of Cash Flow Activities. Net cash provided by operating activities was $653.6 million, $423.0 million and $272.8 million for the years ended December 31, 2018, 2017 and 2016, respectively. The increase from 2017 to 2018 was driven primarily by an increase in revenues as a result of higher crude oil prices and higher crude oil production and a decrease in working capital requirements, partially offset by an increase in the net cash paid for derivative settlements and an increase in operating expenses and cash general and administrative expense. The increase from 2016 to 2017 was driven primarily by an increase in revenues as a result of higher production and commodity prices and a decrease in working capital requirements, partially offset by a decrease in the net cash received from derivative settlements and an increase in operating expenses and cash general and administrative expense.

Net cash used in investing activities was $796.0 million, $1.2 billion and $619.8 million for the years ended December 31, 2018, 2017 and 2016, respectively. The decrease from 2017 to 2018 was primarily due to a decrease in cash payments for acquisitions

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of oil and gas properties, as well as cash received from the divestitures in Niobrara and Eagle Ford in early 2018, partially offset by an increase in capital expenditures as a result of our ongoing DC&I activity in Eagle Ford and the Delaware Basin. The increase from 2016 to 2017 was due primarily to funding the ExL Acquisition and increased capital expenditures, primarily in the Eagle Ford Shale and the Delaware Basin, partially offset by increased net proceeds from divestitures of oil and gas properties, which primarily related to the divestitures of substantially all of our assets in the Marcellus Shale and Utica Shale as well as deposits received in connection with the divestitures of a portion of our assets in the Eagle Ford Shale and substantially all of our assets in the Niobrara.

Net cash provided by financing activities for the years ended December 31, 2018, 2017 and 2016 was $135.2 million, $741.8 million and $308.3 million, respectively. The decrease from 2017 to 2018 was primarily due to payments for the redemptions of our 7.50% Senior Notes and Preferred Stock, decreased cash provided by the issuance of senior notes and Preferred Stock in 2017, and increased cash dividends paid on the Preferred Stock, partially offset by increased borrowings, net of repayments under our revolving credit facility. The increase from 2016 to 2017 was due to net proceeds related to the issuance of the 8.25% Senior Notes, the sale of Preferred Stock, the sale of common stock, and increased borrowings net of repayments under our revolving credit facility in 2017 as compared to 2016, partially offset by the redemption of $150.0 million of the 7.50% Senior Notes, increased debt issuance costs related to the amendments to the credit agreement governing the revolving credit facility and dividends paid on the Preferred Stock.

Liquidity/Cash Flow Outlook. Economic downturns may adversely affect our ability to access capital markets in the future. Cash flows from operations are primarily driven by crude oil production, crude oil prices, and settlements of our crude oil derivatives. We currently believe that cash flows from operations and borrowings under our revolving credit facility will provide adequate financial flexibility and will be sufficient to fund our immediate cash flow requirements.

• Revolving credit facility. The borrowing base under our revolving credit facility is affected by assumptions of the administrative agent with respect to, among other things, crude oil and, to a lesser extent, natural gas prices. Our borrowing base may decrease if our administrative agent reduces the crude oil and natural gas prices from those used to determine our existing borrowing base. See “—Sources and Uses of Cash—Borrowings under revolving credit facility” and “—Financing Arrangements—Senior Secured Revolving Credit Facility” for further details of our revolving credit facility.

• Contingent consideration arrangements. As part of the ExL Acquisition, as well as in each of the divestitures of our assets in Niobrara, Marcellus, and Utica, we agreed to contingent consideration arrangements, where we will receive or be required to pay certain amounts if commodity prices are greater than specified thresholds. For the year ended December 31, 2018, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration were exceeded. As a result, in January 2019, we paid $50.0 million and received $10.0 million from settlement of these contingent consideration arrangements. See “Note 12. Derivative Instruments” of the Notes to our Consolidated Financial Statements for further details of each of these contingent consideration arrangements and “Item 7A. Qualitative and Quantitative Disclosures about Market Risk” for details of the sensitivities to commodity price for each contingent consideration arrangement.

• Commodity derivative instruments. We use commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of our forecasted sales of production and achieve a more predictable level of cash flow.

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As of February 22, 2019, we had the following outstanding commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Fixed Price ($ per Bbl)		Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)		Fixed Price Differential ($ per Bbl)
Crude oil	1Q19	Three-Way Collars	NYMEX WTI	27,000	—			$41.67		$50.96		$74.23	—
Crude oil	1Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—		—			$5.16
Crude oil	1Q19	Basis Swaps	WTI Midland-WTI Cushing	5,500	—		—		—		—			($5.24	)
Crude oil	1Q19	Sold Call Options	NYMEX WTI	3,875	—		—		—			$81.07	—
Crude oil	2Q19	Three-Way Collars	NYMEX WTI	27,000	—			$41.67		$50.96		$74.23	—
Crude oil	2Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—		—			$5.16
Crude oil	2Q19	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—		—			($5.38	)
Crude oil	2Q19	Sold Call Options	NYMEX WTI	3,875	—		—		—			$81.07	—
Crude oil	3Q19	Three-Way Collars	NYMEX WTI	27,000	—			$41.67		$50.96		$74.23	—
Crude oil	3Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—		—			$5.16
Crude oil	3Q19	Basis Swaps	WTI Midland-WTI Cushing	7,000	—		—		—		—			($5.56	)
Crude oil	3Q19	Sold Call Options	NYMEX WTI	3,875	—		—		—			$81.07	—
Crude oil	4Q19	Three-Way Collars	NYMEX WTI	27,000	—			$41.67		$50.96		$74.23	—
Crude oil	4Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—		—			$5.16
Crude oil	4Q19	Basis Swaps	WTI Midland-WTI Cushing	11,000	—		—		—		—			($3.84	)
Crude oil	4Q19	Sold Call Options	NYMEX WTI	3,875	—		—		—			$81.07	—
Crude oil	2020	Price Swaps	NYMEX WTI	3,000		$55.06	—		—		—		—
Crude oil	2020	Three-Way Collars	NYMEX WTI	6,000	—			$45.00		$55.00		$64.69	—
Crude oil	2020	Basis Swaps	WTI Midland-WTI Cushing	13,000	—		—		—		—			($1.27	)
Crude oil	2020	Sold Call Options	NYMEX WTI	4,575	—		—		—			$75.98	—
Crude oil	2021	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—		—			$0.03

Commodity	Period	Type of Contract	Index	Volumes (MMBtu per day)	Fixed Price ($ per MMBtu)	Sub-Floor Price ($ per MMBtu)	Floor Price ($ per MMBtu)	Ceiling Price ($ per MMBtu)		Fixed Price Differential ($ per MMBtu)
Natural gas	1Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—	—		$3.25	—
Natural gas	2Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—	—		$3.25	—
Natural gas	3Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—	—		$3.25	—
Natural gas	4Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—	—		$3.25	—
Natural gas	2020	Sold Call options	NYMEX Henry Hub	33,000	—	—	—		$3.50	—

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Credit Ratings. Our ability to borrow money will be impacted by several factors, including our credit ratings. Credit ratings agencies perform independent analyses when assigning credit ratings. A downgrade of our credit rating could increase our future cost of borrowing, thereby negatively affecting our available liquidity. The following table presents our credit ratings as of February 22, 2019:

	Credit Rating
Standard and Poor’s
Corporate Credit Rating	B+
Senior Unsecured Debt Rating	B+
Outlook	Stable
Moody’s Investors Service
Corporate Credit Rating	B1
Senior Unsecured Debt Rating	B2
Outlook	Stable

If cash flows from operations and borrowings under our revolving credit facility and the other sources of cash described under “—Sources and Uses of Cash” are insufficient to fund our remaining 2019 DC&I capital expenditure plan, we may need to reduce our capital expenditure plan or seek other financing alternatives. We may not be able to obtain financing needed in the future on terms that would be acceptable to us, or at all. If we cannot obtain adequate financing, we may be required to limit or defer a portion of our remaining 2019 DC&I capital expenditure plan, thereby potentially adversely affecting the recoverability and ultimate value of our oil and gas properties. Based on existing market conditions and our expected liquidity needs, among other factors, we may use a portion of our cash flows from operations, proceeds from divestitures, securities offerings or borrowings to reduce debt prior to scheduled maturities through debt repurchases, either in the open market or in privately negotiated transactions, through debt redemptions or tender offers, or through repayments of bank borrowings.

Contractual Obligations

The following table sets forth estimates of our contractual obligations as of December 31, 2018 (In thousands):

	2019		2020		2021		2022		2023		2024 and Thereafter		Total
Long-term debt (1)		$—		$—		$—		$744,431		$650,000		$250,000		$1,644,431
Cash interest on senior notes (2)	61,250		61,250		61,250		61,250		40,938		41,250		327,188
Cash interest and commitment fees on revolving credit facility (3)	32,839		32,839		32,839		11,311		—		—		109,828
Operating leases	10,024		9,154		6,249		3,639		3,680		20,978		53,724
Drilling rig contracts (4)	37,077		16,867		813		—		—		—		54,757
Delivery commitments (5)	3,726		2,807		2,487		30		7		19		9,076
Produced water disposal commitments (6)	18,139		20,894		20,898		20,954		10,471		9,769		101,125
Asset retirement obligations and other (7)	4,537		1,898		378		270		152		17,623		24,858
Total Contractual Obligations		$167,592		$145,709		$124,914		$841,885		$705,248		$339,639		$2,324,987

(1) Long-term debt consists of the principal amounts of the 6.25% Senior Notes due 2023, the 8.25% Senior Notes due 2025, and borrowings outstanding under our revolving credit facility which matures in 2022.

(2) Cash interest on senior notes includes cash payments for interest on the 6.25% Senior Notes due 2023 and the 8.25% Senior Notes due 2025.

(3) Cash interest on our revolving credit facility was calculated using the weighted average interest rate of the outstanding borrowings under the revolving credit facility as of December 31, 2018 of 4.17%. Commitment fees on our revolving credit facility were calculated based on the unused portion of lender commitments as of December 31, 2018, at the applicable commitment fee rate of 0.500%.

(4) Drilling rig contracts represent gross contractual obligations and accordingly, other joint owners in the properties operated by us will generally be billed for their working interest share of such costs. As of December 31, 2018, early termination of these contracts would have resulted in termination penalties of $29.8 million,which would be in lieu of paying the remaining commitments presented in the table above, and are generally not billed to joint owners. For the years endedDecember 31, 2018 and 2017, we did not incur any termination penalties. For the year ended December 31, 2016, we incurred $1.8 million of termination penalties which were recorded to other expense, net.

(5) Delivery commitments represent contractual obligations we have entered into for certain gathering, processing and transportation service agreements which require minimum volumes of natural gas to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any natural gas. For the years ended December 31, 2018, 2017 and 2016, we paid

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deficiency fees in the amount of $2.0 million, $1.4 million, and $1.4 million, respectively, which were recorded to lease operating expense when incurred. However, as of the filing of this report, we do not expect any material shortfalls in our delivery commitments.

(6) Produced water disposal commitments represent contractual obligations we have entered into for certain service agreements which require minimum volumes of produced water to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any produced water. For the years ended December 31, 2018, 2017 and 2016, we were not required to pay any deficiency fees. Additionally, as of the filing of this report, we do not expect any material shortfalls in our produced water disposal commitments.

(7) Asset retirement obligations and other are based on estimates and assumptions that affect the reported amounts as of December 31, 2018. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results. See “Note 2. Summary of Significant Accounting Policies” of the Notes to our Consolidated Financial Statements for further discussion of estimates and assumptions that may affect the reported amounts.

Off Balance Sheet Arrangements

We currently have no off balance sheet arrangements.

Financing Arrangements

Senior Secured Revolving Credit Facility

We have a senior secured revolving credit facility with a syndicate of banks that, as of December 31, 2018, had a borrowing base of $1.3 billion, with an elected commitment amount of $1.1 billion, and $744.4 million of borrowings outstanding at a weighted average interest rate of 4.17%. The credit agreement governing our senior secured revolving credit facility provides for interest-only payments until May 4, 2022, when the credit agreement matures and any outstanding borrowings are due.

On January 31, 2018, as a result of the divestiture in the Eagle Ford Shale, the borrowing base under the senior secured revolving credit facility was reduced from $900.0 million to $830.0 million, however, the elected commitment amount remained unchanged at $800.0 million.

On May 4, 2018, we entered into the twelfth amendment to the credit agreement governing the revolving credit facility to, among other things, increase the borrowing base and elected commitment amount, reduce the margins applied to Eurodollar and base rate loans, and amend the covenant limiting payment of dividends and distributions on equity to increase our ability to make dividends and distributions on our equity interests.

On October 29, 2018, we entered into the thirteenth amendment to the credit agreement governing the revolving credit facility to, among other things, increase the borrowing base and elected commitment amount and reduce the margins applied to Eurodollar and base rate loans.

See “Note 6. Long-Term Debt” of the Notes to our Consolidated Financial Statements for additional details of the twelfth and thirteenth amendments, rates of interest on outstanding borrowings, commitment fees on the unused portion of lender commitments, and the financial covenants we are subject to under the terms of the credit agreement.

Redemptions of 7.50% Senior Notes

During the fourth quarter of 2017, we redeemed $150.0 million of the outstanding aggregate principal amount of our 7.50% Senior Notes at a price equal to 101.875% of par, plus accrued and unpaid interest. We paid $156.0 million upon the redemption, which included a redemption premium of $2.8 million and accrued and unpaid interest of $3.2 million. As a result of the redemption, we recorded a loss on extinguishment of debt of $4.2 million, which included the redemption premium of $2.8 million and the write-off of associated unamortized premiums and debt issuance costs of $1.4 million.

During the first and fourth quarters of 2018, we redeemed the remaining $320.0 million of the outstanding aggregate principal amount of our 7.50% Senior Notes at a price equal to 101.875% of par and the remaining $130.0 million outstanding aggregate principal amount at a redemption price of 100% of par, respectively, both plus accrued and unpaid interest. We paid a total of $468.6 million upon the redemptions, which included redemption premiums of $6.0 million and accrued and unpaid interest of $12.6 million. As a result of the redemptions, we recorded a loss on extinguishment of debt of $9.6 million, which included the redemption premiums of $6.0 million and the write-off of associated unamortized premiums and debt issuance costs of $3.6 million.

Redemption of Preferred Stock

During the first quarter of 2018, we redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and $0.5 million accrued and unpaid dividends. We recognized a $7.1 million loss on the redemption due to the excess of the $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock.

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Redemption of Other Long-Term Debt

During the second quarter of 2018, we redeemed the remaining $4.4 million outstanding principal amount of our 4.375% Convertible Senior Notes due 2028 at a price equal to 100% of par. Upon redemption, we paid $4.5 million, which included accrued and unpaid interest of $0.1 million.

Common Stock Offering

On August 17, 2018, we completed a public offering of 9.5 million shares of our common stock at a price per share of $22.55. We used the net proceeds of $213.7 million, net of offering costs, to fund the Devon Acquisition and for general corporate purposes.

Summary of Critical Accounting Policies

The following summarizes our critical accounting policies. See a complete list of significant accounting policies in “Note 2. Summary of Significant Accounting Policies” of the Notes to our Consolidated Financial Statements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods reported. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results. We evaluate subsequent events through the date the financial statements are issued.

Significant estimates include volumes of proved oil and gas reserves, which are used in calculating DD&A of proved oil and gas property costs, the present value of estimated future net revenues included in the full cost ceiling test, estimates of future taxable income used in assessing the realizability of deferred tax assets, and the estimated costs and timing of cash outflows underlying asset retirement obligations. Oil and gas reserve estimates, and therefore calculations based on such reserve estimates, are subject to numerous inherent uncertainties, the accuracy of which, is a function of the quality and quantity of available data, the application of engineering and geological interpretation and judgment to available data and the interpretation of mineral leaseholds and other contractual arrangements, including adequacy of title and drilling requirements. These estimates also depend on assumptions regarding quantities and production rates of recoverable oil and gas reserves, oil and gas prices, timing and amounts of development costs and operating expenses, all of which will vary from those assumed in our estimates. Other significant estimates are involved in determining acquisition date fair values of assets acquired and liabilities assumed, impairments of unevaluated leasehold costs, fair values of commodity derivative assets and liabilities, fair values of contingent consideration arrangements, preferred stock fair value upon issuance, grant date fair value of stock-based awards, and evaluating disputed claims, interpreting contractual arrangements and contingencies. Estimates are based on current assumptions that may be materially affected by the results of subsequent drilling and completion, testing and production as well as subsequent changes in oil and gas prices, interest rates and the market value and volatility of our common stock.

Oil and Gas Properties

Oil and gas properties are accounted for using the full cost method of accounting under which all productive and nonproductive costs directly associated with property acquisition, exploration and development activities are capitalized to cost centers established on a country-by-country basis. The internal cost of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities are capitalized to either proved or unproved oil and gas properties based on the type of activity. Internal costs related to production, general corporate overhead and similar activities are expensed as incurred.

Capitalized oil and gas property costs within a cost center are amortized on an equivalent unit-of-production method, converting natural gas to barrels of oil equivalent at the ratio of six thousand cubic feet of gas to one barrel of oil, which represents their approximate relative energy content. The equivalent unit-of-production amortization rate is computed on a quarterly basis by dividing current quarter production by proved oil and gas reserves at the beginning of the quarter then applying such amortization rate to proved oil and gas property costs, which includes estimated asset retirement costs, less accumulated amortization, plus the estimated future expenditures (based on current costs) to be incurred in developing proved reserves, net of estimated salvage values.

Unproved properties, not being amortized, include unevaluated leasehold and seismic costs associated with specific unevaluated properties and related capitalized interest. Individually significant unevaluated leaseholds are assessed on a quarterly basis to determine whether or not and to what extent proved reserves have been assigned to the properties or if an impairment has occurred, in which case the related costs along with associated capitalized interest are reclassified to proved oil and gas properties. Factors we consider in our impairment assessment include drilling results by us and other operators, the terms of oil and gas leases not held by production and DC&I capital expenditure plans. Individually insignificant unevaluated leaseholds are grouped by major area and added to proved oil and gas properties based on the average primary lease term of the properties. Geological and

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geophysical costs not associated with specific prospects are recorded to proved oil and gas property costs as incurred. The amount of interest costs capitalized is determined on a quarterly basis based on the average balance of unproved properties and the weighted average interest rate of outstanding borrowings.

Proceeds from the sale of proved and unproved oil and gas properties are recognized as a reduction of proved oil and gas property costs with no gain or loss recognized, unless the sale significantly alters the relationship between capitalized costs and proved reserves of oil and gas attributable to a cost center. For the years ended December 31, 2018, 2017 and 2016, we did not have any sales of oil and gas properties that significantly altered such relationship.

Impairment of Proved Oil and Gas Properties

At the end of each quarter, the net book value of oil and gas properties, less related deferred income taxes, are limited to the “cost center ceiling” equal to (i) the sum of (a) the present value of estimated future net revenues from proved oil and gas reserves, less estimated future expenditures to be incurred in developing and producing the proved reserves computed using a discount factor of 10%, (b) the costs of unproved properties not being amortized, and (c) the lower of cost or estimated fair value of unproved properties included in the costs being amortized; less (ii) related income tax effects. Any excess of the net book value of oil and gas properties, less related deferred income taxes, over the cost center ceiling is recognized as an impairment of proved oil and gas properties. An impairment recognized in one period may not be reversed in a subsequent period even if higher commodity prices in the future result in a cost center ceiling in excess of the net book value of oil and gas properties, less related deferred income taxes.

The estimated future net revenues used in the cost center ceiling are calculated using the average realized prices for sales of crude oil, NGLs, and natural gas on the first calendar day of each month during the 12-month period prior to the end of the current quarter (“12-Month Average Realized Price”), held flat for the life of the production, except where different prices are fixed and determinable from applicable contracts for the remaining term of those contracts. Prices do not include the impact of derivative instruments as we elected not to meet the criteria to qualify derivative instruments for hedge accounting treatment.

We did not recognize impairments of proved oil and gas properties for the years ended December 31, 2018 and 2017. Primarily due to declines in the 12-Month Average Realized Prices of crude oil, we recognized impairments of proved oil and gas properties for the year ended December 31, 2016. Details of the 12-Month Average Realized Price of crude oil for the years ended December 31, 2018, 2017 and 2016 and the impairments of proved oil and gas properties for the year ended December 31, 2016 are summarized in the table below: 

	Years Ended December 31,
	2018			2017			2016
Impairment of proved oil and gas properties (In thousands)		$—			$—		$576,540
Crude Oil 12-Month Average Realized Price ($/Bbl) - Beginning of period	$49.87			$39.60			$47.24
Crude Oil 12-Month Average Realized Price ($/Bbl) - End of period	$63.80			$49.87			$39.60
Crude Oil 12-Month Average Realized Price percentage increase (decrease) during period	28		%	26		%	(16	%)

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The table below presents various pricing scenarios to demonstrate the sensitivity of our December 31, 2018 cost center ceiling to changes in 12-month average benchmark crude oil and natural gas prices underlying the 12-Month Average Realized Prices. The sensitivity analysis is as of December 31, 2018 and, accordingly, does not consider drilling and completion activity, acquisitions or dispositions of oil and gas properties, production, changes in crude oil and natural gas prices, and changes in development and operating costs occurring subsequent to December 31, 2018 that may require revisions to estimates of proved reserves. See also Part I, “Item 1A. Risk Factors—If crude oil and natural gas prices decline to near or below levels experienced in 2015 and 2016 we could be required to record additional impairments of proved oil and gas properties that would constitute a charge to earnings and reduce our shareholders’ equity.”

	12-Month Average Realized Prices		Excess (deficit) of cost center ceiling over net book value, less related deferred income taxes	Increase (decrease) of cost center ceiling over net book value, less related deferred income taxes
Full Cost Pool Scenarios	Crude Oil ($/Bbl)	Natural Gas ($/Mcf)	(In millions)	(In millions)
December 31, 2018 Actual	$63.80	$2.46	$1,369
Crude Oil and Natural Gas Price Sensitivity
Crude Oil and Natural Gas +10%	$70.36	$2.78	$1,947	$578
Crude Oil and Natural Gas -10%	$57.26	$2.14	$795	($574)
Crude Oil Price Sensitivity
Crude Oil +10%	$70.36	$2.46	$1,894	$525
Crude Oil -10%	$57.26	$2.46	$849	($520)
Natural Gas Price Sensitivity
Natural Gas +10%	$63.80	$2.78	$1,422	$53
Natural Gas -10%	$63.80	$2.14	$1,315	($54)

The price of crude oil, which is the commodity price that our cost center ceiling is most sensitive to as presented in the table above, decreased during the fourth quarter of 2018 and has remained at lower levels in early 2019. We estimate that the first quarter of 2019 cost center ceiling will exceed the net book value, less related deferred income taxes, resulting in no impairment of proved oil and gas properties. This estimate of the first quarter of 2019 cost center ceiling test is based on the estimated 12-Month Average Realized Price of crude oil of $61.27 per barrel as of March 31, 2019, which is based on the average realized price for sales of crude oil on the first calendar day of each month for the first 11 months and an estimate for the twelfth month based on a quoted forward price.

We further sensitized the 12-Month Average Realized Price of crude oil by using $50.00 per barrel. Under this scenario, our cost center ceiling would exceed the net book value, less related deferred income taxes, resulting in no impairment of proved oil and gas properties.

Both of these estimates assume that all other inputs and assumptions are as of December 31, 2018, other than the price of crude oil, and remain unchanged. As such, drilling and completion activity, acquisitions or dispositions of oil and gas properties, production, and changes in development and operating costs occurring subsequent to December 31, 2018 may require revisions to estimates of proved reserves, which would impact the calculation of the cost center ceiling.

Oil and Gas Reserve Estimates

The proved oil and gas reserve estimates as of December 31, 2018 included in this document have been prepared by Ryder Scott Company, L.P., (“Ryder Scott”), independent third party reserve engineers. Reserve engineering is a subjective process of estimating underground accumulations of hydrocarbons that cannot be measured in an exact manner. The process relies on judgment and the interpretation of available geologic, geophysical, engineering and production data. The extent, quality and reliability of this data can vary. The process also requires assumptions regarding drilling and operating costs, taxes and availability of funds. The oil and gas reserve estimation and disclosure requirements mandate certain of these assumptions such as existing economic and operating conditions, average crude oil and natural gas prices and the discount rate.

Proved oil and gas reserve estimates prepared by others may be substantially higher or lower than Ryder Scott’s estimates. Significant assumptions used in the proved oil and gas reserve estimates are assessed by both Ryder Scott and our internal reserve team. All reserve reports prepared by Ryder Scott are reviewed by our senior management team, including the Chief Executive

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Officer and Chief Operating Officer. Because these estimates depend on many assumptions, all of which may differ from actual results, reserve quantities actually recovered may be significantly different than estimated. Material revisions to reserve estimates may be made depending on the results of drilling, testing, and production.

It should not be assumed that the present value of future net cash flows is the current market value of our estimated proved oil and gas reserves. In accordance with the oil and gas reserve estimation and disclosure requirements, the discounted future net cash flows from proved reserves are based on the unweighted average of the first day of the month price for each month in the previous twelve-month period, using current costs and a 10% discount rate.

Our depletion rate depends on our estimate of total proved reserves. Holding all other factors constant, if our estimates of total proved reserves increased or decreased, the depletion rate and therefore DD&A expense of proved oil and gas properties would decrease or increase, respectively.

Derivative Instruments

We use commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of our forecasted sales of production and achieve a more predictable level of cash flow. All commodity derivative instruments are recorded in the consolidated balance sheets as either an asset or liability measured at fair value. We net our commodity derivative instrument fair value amounts executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to International Swap Dealers Association Master Agreements (“ISDAs”), which provide for net settlement over the term of the contract and in the event of default or termination of the contract. We do not enter into commodity derivative instruments for speculative purposes.

We have entered into agreements for acquisitions or divestitures of oil and gas properties that include obligations to pay the seller or rights to receive from the buyer, respectively, additional consideration if commodity prices exceed specified thresholds during certain periods in the future. These contingent consideration liabilities and assets are required to be bifurcated and accounted for separately as derivative instruments as they are not considered to be clearly and closely related to the host contract, and recognized at their acquisition or divestiture date fair value in the consolidated balance sheets.

We have elected not to meet the criteria to qualify our commodity derivative instruments for hedge accounting treatment. Therefore, all gains and losses as a result of changes in the fair value of commodity derivative instruments, as well as our contingent consideration arrangements, are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the changes occur. Deferred premium obligations associated with our commodity derivative instruments are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the deferred premium obligations are incurred.

Cash flows are impacted to the extent that settlements of commodity derivative instruments, including deferred premium obligations, and contingent consideration arrangements result in cash received or paid during the period and are recognized as “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows. Cash received or paid in settlement of contingent consideration assets or liabilities, respectively, are classified as cash flows from financing activities up to the divestiture or acquisition date fair value with any excess classified as cash flows from operating activities.

Our Board of Directors establishes risk management policies and, on a quarterly basis, reviews our commodity derivative instruments, including volumes, types of instruments and counterparties. These policies require that commodity derivative instruments be executed only by the President or Chief Financial Officer after consultation with and concurrence by the President, Chief Financial Officer and Chairman of the Board.

Preferred Stock and Common Stock Warrants

We apply the accounting standards for distinguishing liabilities from equity when determining the classification and measurement of preferred stock. Preferred stock that is not mandatorily redeemable is excluded from liability classification and is evaluated for classification in shareholders’ equity or temporary equity. As the number of common shares that could be delivered upon the holders’ optional redemption is indeterminate, we cannot assert that we will be able to settle in shares of our common stock and, as a result, present preferred stock as temporary equity. On a quarterly basis, we reassess the presentation of preferred stock in the consolidated balance sheets.

When preferred stock is issued in conjunction with common stock warrants, the common stock warrants are evaluated separately as a freestanding financial instrument to determine whether they must be recorded as a derivative instrument. We further evaluate the common stock warrants for equity classification and have determined that they qualify for equity classification and, therefore, are presented in additional paid-in capital in the consolidated balance sheets. The preferred stock and common stock warrants are recorded based on the net proceeds received allocated to the two instrument’s relative fair values. The preferred stock is subject to accretion from its relative fair value at the issuance date to the redemption value using the effective interest method. The common stock warrants do not require further adjustments from their relative fair value at the issuance date.

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Dividends and accretion associated with preferred stock are presented in the consolidated statements of operations as reductions to net income, or increases of net loss, to derive net income (loss) attributable to common shareholders. Dividend payments are presented as a financing activity in the consolidated statement of cash flows.

Income Taxes

Income taxes are recognized based on earnings reported for tax return purposes in addition to a provision for deferred income taxes. Deferred income taxes are recognized at the end of each reporting period for the future tax consequences of cumulative temporary differences between the tax bases of assets and liabilities and their reported amounts in our financial statements based on existing tax laws and enacted statutory tax rates applicable to the periods in which the temporary differences are expected to affect taxable income. We assess the realizability of our deferred tax assets on a quarterly basis by considering whether it is more likely than not that all or a portion of the deferred tax assets will not be realized. We consider all available evidence (both positive and negative) when determining whether a valuation allowance is required. In making this assessment, we evaluated possible sources of taxable income that may be available to realize the deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies.

For each of the years ended December 31, 2018, 2017, and 2016, we maintained a full valuation allowance against our deferred tax assets based on our conclusion, considering all available evidence (both positive and negative), that it was more likely than not that the deferred tax assets would not be realized. A significant item of objective negative evidence considered was the cumulative pre-tax loss incurred over the three-year period ended December 31, 2018, primarily due to impairments of proved oil and gas properties recognized in the first three quarters of 2016, which limits our ability to consider subjective positive evidence, such as its projections of future taxable income.

We currently believe it is reasonably possible for us to achieve a three-year cumulative level of profitability within the next 12 months, as early as the first quarter of 2019, which would enhance our ability to conclude that it is more likely than not that the deferred tax assets would be realized and support a release of a portion or substantially all of the valuation allowance. A release of the valuation allowance would result in the recognition of an increase in deferred tax assets and an income tax benefit in the period in which the release occurs, although the exact timing and amount of the release is subject to change based on numerous factors, including our projections of future taxable income, which we continue to assess based on available information each reporting period.

We classify interest and penalties associated with income taxes as interest expense. We apply the tax law ordering approach to determine the sequence in which deferred tax assets and other tax attributes are utilized.

Commitments and Contingencies

Liabilities are recognized for contingencies when (i) it is both probable that an asset has been impaired or that a liability has been incurred and (ii) the amount of such loss is reasonably estimable. See “Note 8. Commitments and Contingencies” of the Notes to our Consolidated Financial Statements for further discussion.

Recently Adopted and Recently Issued Accounting Pronouncements

See “Note 2. Summary of Significant Accounting Policies” of the Notes to our Consolidated Financial Statements for discussion of the recent accounting pronouncements issued by the Financial Accounting Standards Board.

Item 7A. Qualitative and Quantitative Disclosures about Market Risk

Commodity Price Risk

Our revenues, future rate of growth, results of operations, financial position and ability to borrow funds or obtain additional capital are substantially dependent upon prevailing prices of crude oil, NGLs, and natural gas, which are affected by changes in market supply and demand and other factors. The markets for crude oil, NGLs, and natural gas have been volatile, especially over the last several years, and these markets will likely continue to be volatile in the future.

The following table sets forth our crude oil, NGL, and natural gas revenues for the year ended December 31,2018 as well as the impact on the crude oil, NGL, and natural gas revenues assuming a 10% increase and decrease in our average realized crude oil, NGL, and natural gas prices, excluding the impact of derivative settlements:

	Year Ended December 31, 2018
	Crude oil		NGLs		Natural gas		Total
	(In thousands)
Revenues		$911,554		$96,585		$57,803		$1,065,942
Impact of a 10% fluctuation in average realized prices		$91,155		$9,659		$5,780		$106,594

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We use commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of our forecasted sales of production and achieve a more predictable level of cash flow. We do not enter into commodity derivative instruments for speculative purposes. As of December 31, 2018, our commodity derivative instruments consisted of three-way collars, basis swaps, and sold call options. See “Note 12. Derivative Instruments” and “Note 16. Subsequent Events” of the Notes to our Consolidated Financial Statements for further discussion of our commodity derivative instruments as of December 31, 2018 and our commodity derivative instruments entered into subsequent to December 31, 2018.

The following table sets forth the cash paid for derivative settlements, net, excluding deferred premium obligations, for the year ended December 31,2018 as well as the impact on the cash paid for derivative settlements, net assuming a 10% increase and decrease in the respective settlement prices:

	Year Ended December 31, 2018
	Crude oil			NGLs			Natural gas			Total
	(In thousands)
Cash paid for derivative settlements, net		($78,570	)		($6,378	)		($1,710	)		($86,658	)
Impact of a 10% increase in settlement prices		($69,853	)		($5,383	)		($3,501	)		($78,737	)
Impact of a 10% decrease in settlement prices		$54,698			$5,383			$3,018			$63,099

The primary drivers of our commodity derivative instrument fair values are the underlying forward oil and gas price curves. The following table sets forth the average forward oil and gas price curves as of December 31, 2018 for each of the years in which we have commodity derivative instruments:

	2019	2020	2021
Crude oil:
NYMEX WTI	$47.09	$49.14	$50.37
LLS-WTI Cushing	$4.81	$4.03	$3.42
WTI Midland-WTI Cushing	($4.09)	($0.15)	$0.55
Natural gas:
NYMEX Henry Hub	$2.78	$2.66	$2.61

The following table sets forth the fair values as of December 31, 2018, excluding deferred premium obligations, as well as the impact on the fair values assuming a 10% increase and decrease in the underlying forward oil and gas price curves that are shown above:

	Crude oil			NGLs		Natural gas			Total
	(In thousands)
Fair value (liability) asset as of December 31, 2018		$31,775			$617		($2,000	)		$30,392
Impact of a 10% increase in forward commodity prices		($21,915	)		$—		($1,617	)		($23,532	)
Impact of a 10% decrease in forward commodity prices		$16,890			$—		$819			$17,709

We had no settlements of contingent consideration arrangements for the year ended December 31, 2018.

The fair values of the contingent consideration arrangements were determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as forward oil and gas price curves, volatility factors and risk adjusted discount rates. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” of the Notes to our Consolidated Financial Statements for further discussion.

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The following table sets forth the fair values of the contingent consideration arrangements as of December 31, 2018, as well as the impact on the fair values assuming a 10% increase and decrease in the underlying forward oil and gas price curves that are shown above:

	Contingent ExL Consideration			Contingent Niobrara Consideration			Contingent Marcellus Consideration			Contingent Utica Consideration
	(In thousands)
Potential (payment) receipt per year		($50,000	)		$5,000			$3,000			$5,000
Maximum potential (payment) receipt		($125,000	)		$15,000			$7,500			$15,000
Fair value (liability) asset as of December 31, 2018		($80,584	)		$7,035			$1,369			$7,501
Impact of a 10% increase in forward commodity prices		($7,466	)		$900			$669			$972
Impact of a 10% decrease in forward commodity prices		$7,846			($775	)		($564	)		($887	)

Interest Rate Risk

We are exposed to market risk due to the floating interest rate associated with any outstanding borrowings on our revolving credit facility. Changes in interest rates do not impact the amount of interest we pay on our fixed-rate 6.25% Senior Notes and 8.25% Senior Notes, but can impact their fair values. As of December 31, 2018, we had approximately $1.6 billion of long-term debt outstanding. Of this amount, approximately $0.9 billion was fixed-rate debt with a weighted average interest rate of 7.01% and approximately $0.7 billion was floating-rate debt on outstanding borrowings on our revolving credit facility with a weighted average interest rate of 4.17%. A 1% increase or decrease in the interest rate on outstanding borrowings on our revolving credit facility would have a corresponding increase or decrease in our interest expense of approximately $4.8 million. See “Note 13. Fair Value Measurements” of the Notes to our Consolidated Financial Statements for further details on the fair value of our 6.25% Senior Notes and 8.25% Senior Notes.

Item 8. Financial Statements and Supplementary Data

The financial statements and information required by this Item appears on pages F-1 through F-50 of this Annual Report on Form 10-K.

Item 9. Changes In and Disagreements With Accountants on Accounting and Financial Disclosures

None.

Item 9A. Controls and Procedures

(a) Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit to the SEC under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), is recorded, processed, summarized and reported within the time periods specified by the SEC’s rules and forms, and that information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

In accordance with Rules 13a-15(b) and 15d-15(b) under the Exchange Act, we carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures (as defined by Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Annual Report on Form 10-K. As described below under paragraph (b) within Management’s Annual Report on Internal Control over Financial Reporting, our Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of the period covered by this Annual Report on Form 10-K, our disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit to the SEC under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC’s rules and forms and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

The audit report of Ernst & Young LLP which is included in this Annual Report on Form 10-K, expressed an unqualified opinion on our consolidated financial statements.

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(b) Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Our internal control over financial reporting includes those policies and procedures that:

• pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect our transactions and dispositions of our assets;

• provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and

• provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the financial statements.

While “reasonable assurance” is a high level of assurance, it does not mean absolute assurance. Because of its inherent limitations, internal control over financial reporting may not prevent or detect every misstatement and instance of fraud. Controls are susceptible to manipulation, especially in instances of fraud caused by collusion of two or more people, including our senior management. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, our management conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2018. In making this evaluation, management used the Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Based on the results of our evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2018.

Ernst & Young LLP, our independent registered public accounting firm that audited our consolidated financial statements, has also issued its own audit report on the effectiveness of our internal control over financial reporting as of December 31, 2018, which is filed with this Annual Report on Form 10-K.

(c) Changes in Internal Control over Financial Reporting

There have not been any changes in our internal control over financial reporting during the quarter ended December 31, 2018 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

None.

PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this item is incorporated herein by reference to our definitive Proxy Statement (the “2019 Proxy Statement”) for our 2019 annual meeting of shareholders to be held on May 16, 2019. The 2019 Proxy Statement will be filed with the SEC not later than 120 days subsequent to December 31, 2018.

Item 11. Executive Compensation

The information required by this item is incorporated herein by reference to the 2019 Proxy Statement, which will be filed with the SEC not later than 120 days subsequent to December 31, 2018.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters

The information required by this item is incorporated herein by reference to the 2019 Proxy Statement, which will be filed with the SEC not later than 120 days subsequent to December 31, 2018.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this item is incorporated herein by reference to the 2019 Proxy Statement, which will be filed with the SEC not later than 120 days subsequent to December 31, 2018.

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Item 14. Principal Accounting Fees and Services

The information required by this item is incorporated herein by reference to the 2019 Proxy Statement, which will be filed with the SEC not later than 120 days subsequent to December 31, 2018.

PART IV

Item 15. Exhibits and Financial Statement Schedules

(a)(1) Financial Statements

Refer to the Index to Consolidated Financial Statements on page F-1 of this Form 10-K for a list of all financial statements filed as part of this report.

(a)(2) Financial Statement Schedules

Financial statement schedules have been omitted because they are either not required, not applicable or the information required to be presented is included in the Company’s consolidated financial statements and related notes.

(a)(3) Exhibits

EXHIBIT INDEX

Exhibit Number		Description
†3.1	—	Amended and Restated Articles of Incorporation of Carrizo Oil & Gas, Inc. (incorporated herein by reference to Exhibit 3.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 1997 (File No. 000-29187-87)).
†3.2	—	Articles of Amendment to Amended and Restated Articles of Incorporation of Carrizo Oil & Gas, Inc. dated as of June 24, 2008 (incorporated herein by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on June 25, 2008 (File No. 000-29187-87)).
†3.3	—	Articles of Amendment to Amended and Restated Articles of Incorporation of Carrizo Oil & Gas, Inc. dated as of May 16, 2017 (incorporated herein by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on May 16, 2017 (File No. 000-291870-87)).
†3.4	—	Composite Articles of Incorporation of Carrizo Oil & Gas, Inc., giving effect to all amendments through May 16, 2017 (incorporated herein by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K filed on May 16, 2017 (File No. 000-291870-87)).
†3.5	—	Statement of Resolutions Establishing Series of 8.875% Redeemable Preferred Stock of Carrizo Oil & Gas, Inc., effective August 10, 2017 (incorporated herein by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on August 11, 2017 (File No. 000-291870-87)).
†3.6	—	Amended and Restated Bylaws of Carrizo Oil & Gas, Inc., adopted May 23, 2018 (incorporated herein by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on May 29, 2018 (File No. 000-29187-87)).
†4.1	—	Indenture dated May 28, 2008 among Carrizo Oil & Gas, Inc., the subsidiaries named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K filed on May 28, 2008 (File No. 000-29187-87)).
†4.2	—	First Supplemental Indenture dated May 28, 2008 between Carrizo Oil & Gas, Inc. and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on May 28, 2008 (File No. 000-29187-87)).
†4.3	—	Second Supplemental Indenture dated May 14, 2009 among Carrizo Oil & Gas, Inc., the subsidiaries named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.21 to the Company’s Registration Statement on Form S-3 (Registration No. 333-159237)).
†4.4	—	Third Supplemental Indenture dated October 19, 2009 among Carrizo Oil & Gas, Inc., the subsidiary named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.19 to the Company’s Registration Statement on Form S-3 (Registration No. 333-159237)).
†4.5	—	Fourth Supplemental Indenture dated November 2, 2010 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on November 2, 2010 (File No. 000-29187-87)).

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†4.6	—	Fifth Supplemental Indenture dated November 2, 2010 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.3 to the Company’s Current Report on Form 8-K filed on November 2, 2010 (File No. 000-29187-87)).
†4.7	—	Sixth Supplemental Indenture dated May 4, 2011 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011 (File No. 000-29187-87)).
†4.8	—	Seventh Supplemental Indenture dated May 4, 2011 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011 (File No. 000-29187-87)).
†4.9	—	Eighth Supplemental Indenture dated August 5, 2011 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011 (File No. 000-29187-87)).
†4.10	—	Ninth Supplemental Indenture dated August 5, 2011 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011 (File No. 000-29187-87)).
†4.11	—	Tenth Supplemental Indenture dated September 10, 2012 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on September 13, 2012 (File No. 000-29187-87)).
†4.12	—	Eleventh Supplemental Indenture dated November 6, 2012 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 000-29187-87)).
†4.13	—	Twelfth Supplemental Indenture dated November 6, 2012 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 000-29187-87)).
†4.14	—	Thirteenth Supplemental Indenture dated November 6, 2012 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 000-29187-87)).
†4.15	—	Fourteenth Supplemental Indenture dated November 6, 2012 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 000-29187-87)).
†4.16	—	Fifteenth Supplemental Indenture dated October 30, 2014 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on October 30, 2014 (File No. 000-29187-87)).
†4.17	—	Sixteenth Supplemental Indenture dated April 28, 2015 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on April 28, 2015 (File No. 000-29187-87)).
†4.18	—	Seventeenth Supplemental Indenture dated May 20, 2015 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K filed on May 22, 2015 (File No. 000-29187-87)).

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†4.19	—	Eighteenth Supplemental Indenture dated May 20, 2015 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on May 22, 2015 (File No. 000-29187-87)).
†4.20	—	Nineteenth Supplemental Indenture dated May 20, 2015 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.3 to the Company’s Current Report on Form 8-K filed on May 22, 2015 (File No. 000-29187-87)).
†4.21	—	Twentieth Supplemental Indenture dated July 14, 2017 among Carrizo Oil & Gas, Inc., the subsidiary guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K filed on July 14, 2017 (File No. 000-29187-87)).
†4.22	—	Officers’ Certificate of Carrizo Oil & Gas, Inc. dated as of November 17, 2011 (incorporated herein by reference to Exhibit 4.5 to the Company’s Current Report on Form 8-K filed on November 17, 2011 (File No. 000-29187-87)).
†4.23	—	Officers’ Certificate of Carrizo Oil & Gas, Inc. dated as of February 23, 2015 (incorporated herein by reference to Exhibit 4.17 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 (File No. 000-29187-87)).
†4.24	—	Warrant Agreement, dated as of August 10, 2017, between Carrizo Oil & Gas, Inc. and Wells Fargo Bank, N.A., as warrant agent (incorporated herein by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K filed on August 11, 2017 (File No. 000-291870-87)).
*†10.1	—	Amended and Restated Incentive Plan of Carrizo Oil & Gas, Inc. effective as of May 15, 2014 (the “2014 Incentive Plan”) (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on May 16, 2014 (File No. 000-29187-87)).
*†10.2	—	2017 Incentive Plan of Carrizo Oil & Gas, Inc. effective as of May 16, 2017 (the “2017 Incentive Plan”) (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on May 16, 2017 (File No. 000-291870-87)).
*†10.3	—	Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (incorporated herein by reference to Exhibit 10.10 to the Company’s Current Report on Form 8-K filed on June 9, 2009 (File No. 000-29187-87)).
*†10.4	—	Form of Employee Restricted Stock Award Agreement (Officer) under the 2014 Incentive Plan (incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on June 17, 2013 (File No. 000-29187-87)).
*†10.5	—	Form of Employee Restricted Stock Unit Award Agreement (Officer) under the 2014 Incentive Plan (incorporated herein by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on June 17, 2013 (File No. 000-29187-87)).
*†10.6	—	Form of Employee Performance Share Award Agreement under the 2014 Incentive Plan (incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014 (File No. 000-29187-87)).
*†10.7	—	Form of Employee Stock Appreciation Rights Agreement (Officer) under the 2014 Incentive Plan (incorporated herein by reference to Exhibit 10.4 to the Company’s Current Report on Form 8-K filed on June 17, 2013 (File No. 000-29187-87)).
*†10.8	—	Form of Director Restricted Stock Unit Agreement under the 2017 Incentive Plan (incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on May 16, 2017 (File No. 000-29187-87)).
*†10.9	—	Form of Employee Restricted Stock Unit Agreement under the 2017 Incentive Plan (incorporated herein by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K filed on May 16, 2017 (File No. 000-29187-87)).
*†10.10	—	Form of Employee Restricted Stock Agreement under the 2017 Incentive Plan (incorporated herein by reference to Exhibit 10.19 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (File No. 000-29187-87)).
*†10.11	—	Form of Employee Performance Share Award Agreement (Officer) under the 2017 Incentive Plan (incorporated herein by reference to Exhibit 10.20 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (File No. 000-29187-87)).

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*†10.12	—	Form of Employee Stock Appreciation Rights Agreement (Officer) under the 2017 Incentive Plan (incorporated herein by reference to Exhibit 10.21 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (File No. 000-29187-87)).
*†10.13	—	Form of Employee Stock Appreciation Rights Agreement (Officer) under the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (incorporated herein by reference to Exhibit 10.5 to the Company’s Current Report on Form 8-K filed on June 17, 2013 (File No. 000-29187-87)).
*†10.14	—	Form of Employee Stock Appreciation Rights Agreement (Officer) under the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (incorporated herein by reference to Exhibit 10.22 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (File No. 000-29187-87)).
*10.15	—	Carrizo Oil & Gas, Inc. Change in Control Severance Plan effective February 14, 2019.
*10.16	—	Form of Employment Agreement of Carrizo Oil & Gas, Inc. as of February 14, 2019.
*†10.17	—	Amended and Restated Employment Agreement dated June 5, 2009 between the Company and S.P. Johnson IV (incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on June 9, 2009 (File No. 000-29187-87)).
*†10.18	—	Amended and Restated Employment Agreement dated June 5, 2009 between the Company and J. Bradley Fisher (incorporated herein by reference to Exhibit 10.4 to the Company’s Current Report on Form 8-K filed on June 9, 2009 (File No. 000-29187-87)).
*†10.19	—	Amended and Restated Employment Agreement dated June 5, 2009 between the Company and Richard H. Smith (incorporated herein by reference to Exhibit 10.6 to the Company’s Current Report on Form 8-K filed on June 9, 2009 (File No. 000-29187-87)).
*†10.20	—	Employment Agreement dated January 15, 2010 between the Company and David L. Pitts (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on January 20, 2010 (File No. 000-29187-87)).
*†10.21	—	Employment Agreement dated July 11, 2011 between the Company and Gregory F. Conaway (incorporated herein by reference to Exhibit 10.10 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 (File No. 100-29187-87)).
*†10.22	—	Employment Agreement dated June 5, 2009 between the Company and Gerald A. Morton (incorporated herein by reference to Exhibit 10.11 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 (File No. 100-29187-87)).
*10.23	—	Amended and Restated Employment Agreement dated February 14, 2019 between the Company and S.P. Johnson IV
*10.24	—	Amended and Restated Employment Agreement dated February 14, 2019 between the Company and Brad Fisher
*10.25	—	Amended and Restated Employment Agreement dated February 14, 2019 between the Company and David L. Pitts
*10.26	—	Amended and Restated Employment Agreement dated February 14, 2019 between the Company and Gerald A. Morton
*10.27	—	Amended and Restated Employment Agreement dated February 14, 2019 between the Company and Richard H. Smith
*10.28	—	Amended and Restated Employment Agreement dated February 14, 2019 between the Company and Gregory F. Conaway
†10.29	—	Credit Agreement dated as of January 27, 2011 among Carrizo Oil & Gas, Inc., as Borrower, BNP Paribas, as Administrative Agent, Credit Agricole Corporate and Investment Bank and Royal Bank of Canada, as Co-Syndication Agents, Capital One, N.A. and Compass Bank, as Co-Documentation Agents, BNP Paribas Securities Corp. as Sole Lead Arranger and Sole Bookrunner, and the Lenders party thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on February 2, 2011 (File No. 000-29187-87)).
†10.30	—	First Amendment, dated as of March 26, 2012, to Credit Agreement dated as of January 27, 2011, among Carrizo Oil & Gas, Inc., BNP Paribas as administrative agent, and the Lenders party thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2012 (File No. 000-29187-87)).

67

†10.31	—	Second Amendment to Credit Agreement, dated as of September 4, 2012, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on September 5, 2012 (File No. 000-29187-87)).
†10.32	—	Third Amendment to Credit Agreement, dated as of September 27, 2012, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (File No. 000-29187-87)).
†10.33	—	Fourth Amendment to Credit Agreement, dated as of October 9, 2013, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on October 11, 2013 (File No. 000-29187-87)).
†10.34	—	Fifth Amendment to Credit Agreement, dated as of October 7, 2014, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on October 9, 2014 (File No. 000-29187-87)).
†10.35	—	Sixth Amendment to Credit Agreement, dated as of May 5, 2015, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2015 (File No. 000-29187-87)).
†10.36	—	Seventh Amendment to Credit Agreement, dated as of October 30, 2015, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (File No. 000-29187-87)).
†10.37	—	Eighth Amendment to Credit Agreement, dated as of May 3, 2016, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on May 4, 2016 (File No. 000-29187-87)).
†10.38	—	Ninth Amendment to Credit Agreement, dated as of May 4, 2017, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017 (File No. 000-29187-87)).
†10.39	—	Tenth Amendment to Credit Agreement, dated as of June 28, 2017, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on June 28, 2017 (File No. 000-291870-87)).
†10.40	—	Eleventh Amendment to Credit Agreement, dated as of November 3, 2017, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017 (File No. 000-291870-87)).
†10.41	—	Twelfth Amendment to Credit Agreement, dated as of May 4, 2018, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 10-Q filed on May 9, 2018 (File No. 000-291870-87)).
†10.42	—	Thirteenth Amendment to Credit Agreement, dated as of October 29, 2018, among Carrizo Oil & Gas, Inc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the lender parties thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 10-Q filed on November 1, 2018 (File No. 000-291870-87)).
†10.43	—	Form of Indemnification Agreement for directors and executive officers of the Company, adopted May 23, 2018 (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on May 29, 2018 (File No. 000-29187-87)).
†10.44	—	Preferred Stock Purchase Agreement dated as of June 28, 2017 between Carrizo Oil & Gas, Inc. and the purchasers named therein (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on June 28, 2017 (File No. 000-29187087)).

68

†10.45	—	Registration Rights Agreement dated as of August 10, 2017 between Carrizo Oil & Gas, Inc. and the GSO Funds party thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on August 11, 2017 (File No. 000-291870-87)).
†10.46	—	Standstill and Voting Agreement dated as of August 10, 2017 between Carrizo Oil & Gas, Inc. and the GSO Funds party thereto (incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on August 11, 2017 (File No. 000-291870-87)).
21.1	—	Subsidiaries of the Company.
23.1	—	Consent of Ernst & Young LLP.
23.2	—	Consent of KPMG LLP.
23.3	—	Consent of Ryder Scott Company, L.P.
31.1	—	CEO Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	—	CFO Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	—	CEO Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	—	CFO Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
99.1	—	Summary of Reserve Report and Report of Ryder Scott Company, L.P. as of December 31, 2018.
101	—	Interactive Data Files.

†    Incorporated by reference as indicated.

*    Management contract or compensatory plan or arrangement.

+ Schedules to this exhibit have been omitted pursuant to Item 601(b) of Regulation S-K; a copy of the omitted schedules will be furnished to the U.S. Securities and Exchange Commission supplementally upon request.

69

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

	PAGE
Reports of Independent Registered Public Accounting Firms	F-2
Consolidated Balance Sheets as of December 31, 2018 and 2017	F-5
Consolidated Statements of Operations for the Years Ended December 31, 2018, 2017 and 2016	F-6
Consolidated Statements of Shareholders’ Equity for the Years Ended December 31, 2018, 2017 and 2016	F-7
Consolidated Statements of Cash Flows for the Years Ended December 31, 2018, 2017 and 2016	F-8
Notes to Consolidated Financial Statements	F-9

F-1

Report of Independent Registered Public Accounting Firm

To the Shareholders and the Board of Directors of Carrizo Oil & Gas, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Carrizo Oil & Gas, Inc. (the Company) as of December 31, 2018 and 2017, and the related consolidated statements of operations, shareholders’ equity and cash flows for each of the two years in the period ended December 31, 2018, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2018 and 2017, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2018 in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 28, 2019 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2017.

Houston, Texas

February 28, 2019

F-2

Report of Independent Registered Public Accounting Firm

To the Shareholders and the Board of Directors of Carrizo Oil & Gas, Inc.

Opinion on Internal Control over Financial Reporting

We have audited Carrizo Oil & Gas, Inc.’s internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Carrizo Oil & Gas, Inc. (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets as of December 31, 2018 and 2017, and the related consolidated statements of operations, shareholders’ equity and cash flows for each of the two years in the period ended December 31, 2018, and the related notes and our report dated February 28, 2019 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Houston, Texas

February 28, 2019

F-3

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders

Carrizo Oil & Gas, Inc.:

We have audited the accompanying Carrizo Oil & Gas, Inc. and subsidiaries (the “Company”) consolidated statements of operations, shareholders’ equity, and cash flows for the year ended December 31, 2016. These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan the audit and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the Company’s results of operations, shareholders’ equity and cash flows for the year ended December 31, 2016, in conformity with U.S. generally accepted accounting principles.

/s/ KPMG LLP

Houston, Texas

February 27, 2017

F-4

CARRIZO OIL & GAS, INC.

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share amounts)

	December 31,
	2018			2017
Assets
Current assets
Cash and cash equivalents		$2,282			$9,540
Accounts receivable, net	99,723			107,441
Derivative assets	39,904			—
Other current assets	8,460			5,897
Total current assets	150,369			122,878
Property and equipment
Oil and gas properties, full cost method
Proved properties, net	2,333,470			1,965,347
Unproved properties, not being amortized	673,833			660,287
Other property and equipment, net	11,221			10,176
Total property and equipment, net	3,018,524			2,635,810
Other long-term assets	16,207			19,616
Total Assets		$3,185,100			$2,778,304
Liabilities and Shareholders’ Equity
Current liabilities
Accounts payable		$98,811			$74,558
Revenues and royalties payable	49,003			52,154
Accrued capital expenditures	60,004			119,452
Accrued interest	18,377			28,362
Derivative liabilities	55,205			57,121
Other current liabilities	40,609			41,175
Total current liabilities	322,009			372,822
Long-term debt	1,633,591			1,629,209
Asset retirement obligations	18,360			23,497
Derivative liabilities	40,817			112,332
Deferred income taxes	8,017			3,635
Other long-term liabilities	6,980			51,650
Total liabilities	2,029,774			2,193,145
Commitments and contingencies
Preferred stock
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	174,422			214,262
Shareholders’ equity
Common stock, $0.01 par value, 180,000,000 shares authorized; 91,627,738 issued and outstanding as of December 31, 2018 and 81,454,621 issued and outstanding as of December 31, 2017	916			815
Additional paid-in capital	2,131,535			1,926,056
Accumulated deficit	(1,151,547		)	(1,555,974		)
Total shareholders’ equity	980,904			370,897
Total Liabilities and Shareholders’ Equity		$3,185,100			$2,778,304

The accompanying notes are an integral part of these consolidated financial statements.

F-5

CARRIZO OIL & GAS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

	Years Ended December 31,
	2018			2017			2016
Revenues
Crude oil		$911,554			$633,233			$378,073
Natural gas liquids	96,585			47,405			22,428
Natural gas	57,803			65,250			43,093
Total revenues	1,065,942			745,888			443,594
Costs and Expenses
Lease operating	161,596			139,854			98,717
Production taxes	50,591			32,509			19,046
Ad valorem taxes	10,422			7,267			5,559
Depreciation, depletion and amortization	299,530			262,589			213,962
General and administrative, net	68,617			66,229			74,972
(Gain) loss on derivatives, net	(6,709		)	59,103			49,073
Interest expense, net	62,413			80,870			79,403
Impairment of proved oil and gas properties	—			—			576,540
Loss on extinguishment of debt	9,586			4,170			—
Other expense, net	296			2,157			1,796
Total costs and expenses	656,342			654,748			1,119,068
Income (Loss) Before Income Taxes	409,600			91,140			(675,474		)
Income tax expense	(5,173		)	(4,030		)	—
Net Income (Loss)		$404,427			$87,110			($675,474	)
Dividends on preferred stock	(18,161		)	(7,781		)	—
Accretion on preferred stock	(3,057		)	(862		)	—
Loss on redemption of preferred stock	(7,133		)	—			—
Net Income (Loss) Attributable to Common Shareholders		$376,076			$78,467			($675,474	)
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$4.40			$1.07			($11.27	)
Diluted		$4.32			$1.06			($11.27	)
Weighted Average Common Shares Outstanding
Basic	85,509			73,421			59,932
Diluted	87,143			73,993			59,932

The accompanying notes are an integral part of these consolidated financial statements.

F-6

CARRIZO OIL & GAS, INC.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(In thousands, except share amounts)

	Common Stock			Additional Paid-in Capital			Accumulated Deficit			Total Shareholders’ Equity
	Shares	Amount
Balance as of January 1, 2016	58,332,993		$583		$1,411,081			($967,610	)		$444,054
Stock-based compensation expense	—	—		31,194			—			31,194
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units	799,506	8		(63		)	—			(55		)
Sale of common stock, net of offering costs	6,000,000	60		223,679			—			223,739
Net loss	—	—		—			(675,474		)	(675,474		)
Balance as of December 31, 2016	65,132,499		$651		$1,665,891			($1,643,084	)		$23,458
Stock-based compensation expense	—	—		23,625			—			23,625
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares	722,122	8		(42		)	—			(34		)
Sale of common stock, net of offering costs	15,600,000	156		222,222			—			222,378
Issuance of warrants	—	—		23,003			—			23,003
Dividends on preferred stock	—	—		(7,781		)	—			(7,781		)
Accretion on preferred stock	—	—		(862		)	—			(862		)
Net income	—	—		—			87,110			87,110
Balance as of December 31, 2017	81,454,621		$815		$1,926,056			($1,555,974	)		$370,897
Stock-based compensation expense	—	—		20,412			—			20,412
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares, net of forfeitures	673,117	6		(233		)	—			(227		)
Sale of common stock, net of offering costs	9,500,000	95		213,651			—			213,746
Dividends on preferred stock	—	—		(18,161		)	—			(18,161		)
Accretion on preferred stock	—	—		(3,057		)	—			(3,057		)
Loss on redemption of preferred stock	—	—		(7,133		)	—			(7,133		)
Net income	—	—		—			404,427			404,427
Balance as of December 31, 2018	91,627,738		$916		$2,131,535			($1,151,547	)		$980,904

The accompanying notes are an integral part of these consolidated financial statements.

F-7

CARRIZO OIL & GAS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Years Ended December 31,
	2018			2017			2016
Cash Flows From Operating Activities
Net income (loss)		$404,427			$87,110			($675,474	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation, depletion and amortization	299,530			262,589			213,962
Impairment of proved oil and gas properties	—			—			576,540
(Gain) loss on derivatives, net	(6,709		)	59,103			49,073
Cash received (paid) for derivative settlements, net	(96,307		)	7,773			119,369
Loss on extinguishment of debt	9,586			4,170			—
Stock-based compensation expense, net	13,524			14,309			36,086
Deferred income tax expense	4,381			3,635			—
Non-cash interest expense, net	2,567			3,657			4,172
Other, net	4,216			2,337			3,753
Changes in components of working capital and other assets and liabilities-
Accounts receivable	24,008			(41,630		)	(12,836		)
Accounts payable	16,013			11,822			(30,130		)
Accrued liabilities	(19,154		)	11,512			(7,938		)
Other assets and liabilities, net	(2,527		)	(3,406		)	(3,809		)
Net cash provided by operating activities	653,555			422,981			272,768
Cash Flows From Investing Activities
Capital expenditures	(968,828		)	(654,711		)	(480,929		)
Acquisitions of oil and gas properties	(204,854		)	(695,774		)	(153,521		)
Proceeds from divestitures of oil and gas properties	381,434			197,564			15,564
Other, net	(3,720		)	(6,531		)	(946		)
Net cash used in investing activities	(795,968		)	(1,159,452		)	(619,832		)
Cash Flows From Financing Activities
Issuance of senior notes, net of issuance costs	—			245,418			—
Redemptions of senior notes and other long-term debt	(460,540		)	(152,813		)	—
Redemption of preferred stock	(50,030		)	—			—
Borrowings under credit agreement	3,309,400			1,992,523			770,291
Repayments of borrowings under credit agreement	(2,856,269		)	(1,788,223		)	(683,291		)
Payments of credit facility amendment fees	(1,674		)	(4,469		)	(1,330		)
Sale of common stock, net of offering costs	213,746			222,378			223,739
Sale of preferred stock, net of issuance costs	—			236,404			—
Payments of dividends on preferred stock	(18,161		)	(7,781		)	—
Other, net	(1,317		)	(1,620		)	(1,069		)
Net cash provided by financing activities	135,155			741,817			308,340
Net Increase (Decrease) in Cash and Cash Equivalents	(7,258		)	5,346			(38,724		)
Cash and Cash Equivalents, Beginning of Year	9,540			4,194			42,918
Cash and Cash Equivalents, End of Year		$2,282			$9,540			$4,194

The accompanying notes are an integral part of these consolidated financial statements.

F-8

CARRIZO OIL & GAS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Nature of Operations

Carrizo Oil & Gas, Inc. is a Houston-based energy company which, together with its subsidiaries (collectively, the “Company”), is actively engaged in the exploration, development, and production of crude oil, NGLs, and natural gas from resource plays located in the United States. The Company’s current operations are principally focused in proven, producing oil and gas plays in the Eagle Ford Shale in South Texas and the Permian Basin in West Texas.

2. Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements include the accounts of the Company after elimination of intercompany transactions and balances and are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). The Company proportionately consolidates its undivided interests in oil and gas properties as well as investments in unincorporated entities, such as partnerships and limited liability companies where the Company, as a partner or member, has undivided interests in the oil and gas properties. Certain reclassifications have been made to prior period amounts to conform to the current period presentation. Such reclassifications had no material impact on prior period amounts.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods reported. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results.

Significant estimates include volumes of proved oil and gas reserves, which are used in calculating depreciation, depletion and amortization (“DD&A”) of proved oil and gas property costs, the present value of estimated future net revenues included in the full cost ceiling test, estimates of future taxable income used in assessing the realizability of deferred tax assets, and the estimated timing of cash outflows underlying asset retirement obligations. Oil and gas reserve estimates, and therefore calculations based on such reserve estimates, are subject to numerous inherent uncertainties, the accuracy of which, is a function of the quality and quantity of available data, the application of engineering and geological interpretation and judgment to available data and the interpretation of mineral leaseholds and other contractual arrangements, including adequacy of title and drilling requirements. These estimates also depend on assumptions regarding quantities and production rates of recoverable oil and gas reserves, oil and gas prices, timing and amounts of development costs and operating expenses, all of which will vary from those assumed in the Company’s estimates. Other significant estimates are involved in determining acquisition date fair values of assets acquired and liabilities assumed, impairments of unevaluated leasehold costs, fair values of commodity derivative assets and liabilities, fair values of contingent consideration arrangements, fair value of preferred stock upon issuance, grant date fair value of stock-based awards, and evaluating disputed claims, interpreting contractual arrangements and contingencies. Estimates are based on current assumptions that may be materially affected by the results of subsequent drilling and completion, testing and production as well as subsequent changes in oil and gas prices, interest rates and the market value and volatility of the Company’s common stock.

Cash and Cash Equivalents

Cash equivalents include highly liquid investments with original maturities of three months or less. Certain of the Company’s cash accounts are zero-balance controlled disbursement accounts that do not have the right of offset against the Company’s other cash balances. The outstanding checks written against these zero-balance accounts have been classified as a component of accounts payable in the consolidated balance sheets and totaled $70.4 million and $62.6 million as of December 31, 2018 and 2017, respectively.

Accounts Receivable

The Company’s accounts receivable consist primarily of receivables from crude oil, NGL, and natural gas purchasers and joint interest owners in properties the Company operates. The Company generally has the right to withhold future revenue distributions to recover past due receivables from joint interest owners. Generally, the Company’s receivables from the sale of crude oil are collected within one month and receivables from the sale of NGL and natural gas are collected within two months. The Company establishes an allowance for doubtful accounts when it determines it is probable that it will not collect all or a part of an accounts receivable balance. The Company assesses the collectability of its accounts receivable on a quarterly basis and adjusts the allowance as necessary using the specific identification method. The Company’s allowance for doubtful accounts and bad debt expense was immaterial for all periods presented.

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Concentration of Credit Risk and Major Customers

The concentration of accounts receivable from entities in the oil and gas industry may impact the Company’s overall credit risk such that these entities may be similarly affected by changes in economic and other industry conditions. The Company generally does not require collateral from its purchasers or joint interest owners.

The Company does not believe the loss of any one of its purchasers would materially affect its ability to sell the oil and gas it produces as other purchasers are available in its primary areas of activity. The Company had the following major customers that represented 10% or more of its total revenues for at least one of the periods presented:

	Years Ended December 31,
	2018	2017	2016
Shell Trading (US) Company	73%	69%	56%
Flint Hills Resources, LP	*	*	15%

* - Less than 10% for the respective year.

The Company’s counterparties to its commodity derivative instruments include lenders under the Company’s credit agreement (“Lender Counterparty”) as well as counterparties who are not lenders under the Company’s credit agreement (“Non-Lender Counterparty”). As each Lender Counterparty has an investment grade credit rating and the Company has obtained a guaranty from each Non-Lender Counterparty’s parent company which has an investment grade credit rating, the Company believes it does not have significant credit risk with its commodity derivative instrument counterparties. Although the Company does not currently anticipate nonperformance from its counterparties, it continually monitors the credit ratings of each Lender Counterparty and each Non-Lender Counterparty’s parent company. The Company executes its derivative instruments with seventeen counterparties to minimize its credit exposure to any individual counterparty.

Oil and Gas Properties

Oil and gas properties are accounted for using the full cost method of accounting under which all productive and nonproductive costs directly associated with property acquisition, exploration and development activities are capitalized to cost centers established on a country-by-country basis. The internal cost of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities are capitalized to either proved or unproved oil and gas properties based on the type of activity. Internal costs related to production, general corporate overhead and similar activities are expensed as incurred.

Capitalized oil and gas property costs within a cost center are amortized on an equivalent unit-of-production method, converting natural gas to barrels of oil equivalent at the ratio of six thousand cubic feet of gas to one barrel of oil, which represents their approximate relative energy content. The equivalent unit-of-production amortization rate is computed on a quarterly basis by dividing current quarter production by proved oil and gas reserves at the beginning of the quarter then applying such amortization rate to proved oil and gas property costs, which includes estimated asset retirement costs, less accumulated amortization, plus the estimated future expenditures (based on current costs) to be incurred in developing proved reserves, net of estimated salvage values.

Unproved properties, not being amortized, include unevaluated leasehold and seismic costs associated with specific unevaluated properties and related capitalized interest. Individually significant unevaluated leaseholds are assessed on a quarterly basis to determine whether or not and to what extent proved reserves have been assigned to the properties or if an impairment has occurred, in which case the related costs along with associated capitalized interest are reclassified to proved oil and gas properties. Factors the Company considers in its impairment assessment include drilling results by the Company and other operators, the terms of oil and gas leases not held by production and drilling, completion, and infrastructure capital expenditure plans. Individually insignificant unevaluated leaseholds are grouped by major area and added to proved oil and gas properties based on the average primary lease term of the properties. Geological and geophysical costs not associated with specific prospects are recorded to proved oil and gas property costs as incurred. The amount of interest costs capitalized is determined on a quarterly basis based on the average balance of unproved properties and the weighted average interest rate of outstanding borrowings.

At the end of each quarter, the net book value of oil and gas properties, less related deferred income taxes, are limited to the “cost center ceiling” equal to (i) the sum of (a) the present value of estimated future net revenues from proved oil and gas reserves, less estimated future expenditures to be incurred in developing and producing the proved reserves computed using a discount factor of 10%, (b) the costs of unproved properties not being amortized, and (c) the lower of cost or estimated fair value of unproved properties included in the costs being amortized; less (ii) related income tax effects. Any excess of the net book value of oil and gas properties, less related deferred income taxes, over the cost center ceiling is recognized as an impairment of proved oil and gas properties. An impairment recognized in one period may not be reversed in a subsequent period even if higher commodity

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prices in the future result in a cost center ceiling in excess of the net book value of oil and gas properties, less related deferred income taxes.

The estimated future net revenues used in the cost center ceiling are calculated using the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the 12-month period prior to the end of the current quarter (“12-Month Average Realized Price”), held flat for the life of the production, except where different prices are fixed and determinable from applicable contracts for the remaining term of those contracts. Prices do not include the impact of commodity derivative instruments as the Company elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment.

Proceeds from the sale of proved and unproved oil and gas properties are recognized as a reduction of proved oil and gas property costs with no gain or loss recognized, unless the sale significantly alters the relationship between capitalized costs and proved reserves of oil and gas attributable to a cost center. For the years ended December 31, 2018, 2017 and 2016, the Company did not have any sales of oil and gas properties that significantly altered such relationship.

Depreciation of other property and equipment is recognized using the straight-line method based on estimated useful lives ranging from three to ten years.

Debt Issuance Costs

Debt issuance costs associated with the revolving credit facility are classified in “Other long-term assets” in the consolidated balance sheets and are amortized to interest expense on a straight-line basis over the term of the facility. Debt issuance costs associated with the senior notes are classified as a reduction of the related long-term debt in the consolidated balance sheets and are amortized to interest expense using the effective interest method over the terms of the related senior notes.

Financial Instruments

The Company’s financial instruments consist of cash and cash equivalents, receivables, payables, commodity derivative assets and liabilities, contingent consideration arrangements determined to be embedded derivatives and long-term debt. The carrying amounts of cash and cash equivalents, receivables and payables approximate fair value due to the highly liquid or short-term nature of these instruments. The fair values of the Company’s commodity derivative assets and liabilities are based on a third-party industry-standard pricing model using contract terms and prices and assumptions and inputs that are substantially observable in active markets throughout the full term of the instruments, including forward oil and gas price curves, discount rates, volatility factors and credit risk adjustments. The fair values of the Company’s contingent consideration arrangements are determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as future commodity prices, volatility factors for the future commodity prices and a risk adjusted discount rate.

The carrying amount of long-term debt associated with borrowings outstanding under the Company’s revolving credit facility approximates fair value as borrowings bear interest at variable rates. The carrying amounts of the Company’s senior notes and other long-term debt may not approximate fair value because carrying amounts are net of unamortized premiums and debt issuance costs, and the senior notes and other long-term debt bear interest at fixed rates. See “Note 6. Long-Term Debt” and “Note 13. Fair Value Measurements” for additional discussion.

Asset Retirement Obligations

The Company’s asset retirement obligations represent the present value of the estimated future costs associated with plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land in accordance with the terms of oil and gas leases and applicable local, state and federal laws. Determining asset retirement obligations requires estimates of the costs of plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land as well as estimates of the economic lives of the oil and gas wells and future inflation rates. The resulting estimate of future cash outflows are discounted using a credit-adjusted risk-free interest rate that corresponds with the timing of the cash outflows. Cost estimates consider historical experience, third party estimates, the requirements of oil and gas leases and applicable local, state and federal laws, but do not consider estimated salvage values. Asset retirement obligations are recognized when the well is drilled or acquired or when the production equipment and facilities are installed or acquired with an associated increase in proved oil and gas property costs. Asset retirement obligations are accreted each period through DD&A to their expected settlement values with any difference between the actual cost of settling the asset retirement obligations and recorded amount being recognized as an adjustment to proved oil and gas property costs. Cash paid to settle asset retirement obligations is included in net cash provided by operating activities in the consolidated statements of cash flows. On a quarterly basis, when indicators suggest there have been material changes in the estimates underlying the obligation, the Company reassesses its asset retirement obligations to determine whether any revisions to the obligations are necessary. At least annually, the Company reassesses all of its asset retirement obligations to determine whether any revisions to the obligations are necessary. Revisions typically occur due to changes in estimated costs or economic lives of the oil and gas wells, or if federal or state regulators enact new requirements regarding plugging and abandoning oil and gas wells. See “Note 7. Asset Retirement Obligations” for additional discussion.

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Commitments and Contingencies

Liabilities are recognized for contingencies when (i) it is both probable that an asset has been impaired or that a liability has been incurred and (ii) the amount of such loss is reasonably estimable. See “Note 8. Commitments and Contingencies” for additional discussion.

Revenue Recognition

The Company’s revenues are comprised solely of revenues from customers and include the sale of crude oil, NGLs, and natural gas. The Company believes that the disaggregation of revenue into these three major product types appropriately depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors based on its single geographic location. Crude oil, NGL, and natural gas revenues are recognized at a point in time when production is sold to a purchaser at a fixed or determinable price, delivery has occurred, control has transferred and collectability of the revenue is probable. The transaction price used to recognize revenue is a function of the contract billing terms. Revenue is invoiced by calendar month based on volumes at contractually based rates with payment typically required within 30 days of the end of the production month. At the end of each month when the performance obligation is satisfied, the variable consideration can be reasonably estimated and amounts due from customers are accrued in “Accounts receivable, net” in the consolidated balance sheets. As of December 31, 2018 and December 31, 2017, receivables from contracts with customers were $77.1 million and $85.6 million, respectively. Taxes assessed by governmental authorities on crude oil, NGL, and natural gas sales are presented separately from such revenues in the consolidated statements of operations.

Crude oil sales. Crude oil production is primarily sold at the wellhead at an agreed upon index price, net of pricing differentials. Revenue is recognized when control transfers to the purchaser at the wellhead, net of transportation costs incurred by the purchaser.

Natural gas and NGL sales. Natural gas is delivered to a midstream processing entity at the wellhead or the inlet of the midstream processing entity’s system. The midstream processing entity gathers and processes the natural gas and remits proceeds for the resulting sales of NGLs and residue gas. The Company evaluates whether it is the principal or agent in the transaction and has concluded it is the principal and the purchasers of the NGLs and residue gas are the customers. Revenue is recognized on a gross basis, with gathering, processing and transportation fees recognized as lease operating expense in the consolidated statements of operations as the Company maintains control throughout processing.

Transaction Price Allocated to Remaining Performance Obligations. The Company applied the practical expedient in ASC 606 exempting the disclosure of the transaction price allocated to remaining performance obligations if the variable consideration is allocated entirely to a wholly unsatisfied performance obligation. Each unit of product typically represents a separate performance obligation, therefore, future volumes are wholly unsatisfied and disclosure of the transaction price allocated to remaining performance obligations is not required.

Derivative Instruments

The Company uses commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of its forecasted sales of production and achieve a more predictable level of cash flow. All commodity derivative instruments are recorded in the consolidated balance sheets as either an asset or liability measured at fair value. The Company nets its commodity derivative instrument fair value amounts executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to International Swap Dealers Association Master Agreements (“ISDAs”), which provide for net settlement over the term of the contract and in the event of default or termination of the contract. The Company does not enter into commodity derivative instruments for speculative purposes.

The Company has entered into agreements for acquisitions or divestitures of oil and gas properties that include obligations to pay the seller or rights to receive from the buyer, respectively, additional consideration if commodity prices exceed specified thresholds during certain periods in the future. These contingent consideration assets and liabilities are required to be bifurcated and accounted for separately as derivative instruments as they are not considered to be clearly and closely related to the host contract, and recognized at their acquisition or divestiture date fair value in the consolidated balance sheets.

The Company has elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment. Therefore, all gains and losses as a result of changes in the fair value of commodity derivative instruments, as well as its contingent consideration arrangements, are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the changes occur. Deferred premium obligations associated with the Company’s commodity derivative instruments are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the deferred premium obligations are incurred.

Cash flows are impacted to the extent that settlements of commodity derivative instruments, including deferred premium obligations, and contingent consideration arrangements result in cash received or paid during the period and are recognized as “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows. Cash received or paid in

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settlement of contingent consideration assets or liabilities, respectively, are classified as cash flows from financing activities up to the divestiture or acquisition date fair value with any excess classified as cash flows from operating activities.

The Company’s Board of Directors establishes risk management policies and, on a quarterly basis, reviews its commodity derivative instruments, including volumes, types of instruments and counterparties. These policies require that commodity derivative instruments be executed only by the President or Chief Financial Officer after consultation with and concurrence by the President, Chief Financial Officer and Chairman of the Board. See “Note 12. Derivative Instruments” for additional discussion.

Preferred Stock and Common Stock Warrants

The Company applies the accounting standards for distinguishing liabilities from equity when determining the classification and measurement of preferred stock. Preferred stock that is not mandatorily redeemable is excluded from liability classification and is evaluated for classification in shareholders’ equity or temporary equity. As the number of common shares that could be delivered upon the holders’ optional redemption is indeterminate, the Company cannot assert that it will be able to settle in shares of its common stock and, as a result, presents preferred stock as temporary equity. On a quarterly basis, the Company reassesses the presentation of preferred stock in the consolidated balance sheets.

When preferred stock is issued with common stock warrants, the common stock warrants are evaluated separately to determine if they are a freestanding financial instrument to determine whether they must be recorded as a derivative instrument. The Company further evaluates the common stock warrants for equity classification and has determined they qualify for equity classification and, therefore, are presented in additional paid-in capital in the consolidated balance sheets. The preferred stock and common stock warrants are recorded based on the net proceeds received allocated to the two instrument’s relative fair values. The preferred stock is subject to accretion from its relative fair value at the issuance date to the redemption value using the effective interest method. The common stock warrants do not require further adjustments from their relative fair value at the issuance date.

Dividends and accretion associated with preferred stock are presented in the consolidated statements of operations as reductions to net income, or increases of net loss, to derive net income (loss) attributable to common shareholders. Dividend payments are presented as a financing activity in the consolidated statement of cash flows.

See “Note 9. Preferred Stock and Common Stock Warrants” for further details of the Company’s outstanding preferred stock and common stock warrants.

Stock-Based Compensation

The Company recognized stock-based compensation expense, net of amounts capitalized to oil and gas properties associated with restricted stock awards and units, stock appreciation rights to be settled in cash (“Cash SARs”), and performance share awards, which is recognized as “General and administrative expense, net” in the consolidated statements of operations. The Company accounts for forfeitures of equity-based incentive awards as they occur. See “Note 11. Stock-Based Compensation” for further details of the awards discussed below.

Restricted Stock Awards and Units. Stock-based compensation expense is based on the price of the Company’s common stock on the grant date and recognized over the vesting period (generally one to three years) using the straight-line method, except for awards or units with performance conditions, in which case the Company uses the graded vesting method. For restricted stock awards and units granted to independent contractors, stock-based compensation expense is based on the fair value remeasured at each reporting period and recognized over the vesting period (generally three years) using the straight-line method, except for awards or units with performance conditions, in which case the Company uses the graded vesting method.

Stock Appreciation Rights. For Cash SARs, stock-based compensation expense is initially based on the grant date fair value determined using a Black-Scholes-Merton option pricing model, with the fair value liability subsequently remeasured at the end of each reporting period and recognized over the vesting period (generally two or three years) using the straight-line method, except for Cash SARs with performance conditions, in which case the Company uses the graded vesting method. For periods subsequent to vesting and prior to exercise, stock-based compensation expense is based on the fair value liability remeasured at the end of each reporting period based on the intrinsic value of the Cash SAR. The liability for Cash SARs is classified as “Other current liabilities” for the portion of the fair value liability attributable to awards that are vested or are expected to vest within the next 12 months, with the remainder classified as “Other long-term liabilities” in the consolidated balance sheets. Cash SARs typically expire between five and seven years after the date of grant. If Cash SARs expire unexercised, the cumulative compensation costs associated with such Cash SARs will be zero.

Performance Shares. For performance shares, stock-based compensation expense is based on the grant date fair value determined using a Monte Carlo valuation model and recognized over an approximate three year vesting period using the straight-line method. Each performance share represents the right to receive one share of common stock, however, the number of performance shares that vest ranges from zero to 200% of the target performance shares granted based on the total shareholder return (“TSR”) of the Company’s common stock relative to the TSR achieved by a specified industry peer group over an approximate three year performance period, the last day of which is also the vesting date. Compensation costs related to the performance shares will be

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recognized if the requisite service period is fulfilled and the performance condition is met, even if the market condition is not achieved.

Income Taxes

Income taxes are recognized based on earnings reported for tax return purposes in addition to a provision for deferred income taxes. Deferred income taxes are recognized at the end of each reporting period for the future tax consequences of cumulative temporary differences between the tax basis of assets and liabilities and their reported amounts in the Company’s consolidated financial statements based on existing tax laws and enacted statutory tax rates applicable to the periods in which the temporary differences are expected to affect taxable income. The Company assesses the realizability of its deferred tax assets on a quarterly basis by considering all available evidence (both positive and negative) to determine whether it is more likely than not that all or a portion of the deferred tax assets will not be realized and a valuation allowance is required. In making this assessment, the Company evaluates possible sources of taxable income that may be available to realize the deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies. See “Note 5. Income Taxes” for further discussion of the deferred tax assets valuation allowance. The Company classifies interest and penalties associated with income taxes as interest expense. The Company applies the tax law ordering approach to determine the sequence in which deferred tax assets and other tax attributes are utilized.

Net Income (Loss) Attributable to Common Shareholders Per Common Share

Basic net income (loss) attributable to common shareholders per common share is based on the weighted average number of shares of common stock outstanding during the year. Diluted net income (loss) attributable to common shareholders per common share is based on the weighted average number of common shares and all potentially dilutive common shares outstanding during the year which include restricted stock awards and units, performance shares, and common stock warrants. The Company includes the number of restricted stock awards and units and common stock warrants in the calculation of diluted weighted average shares outstanding when the grant date or exercise prices are less than the average market prices of the Company’s common stock for the period. The Company includes the number of performance shares in the calculation of diluted weighted average common shares outstanding based on the number of shares, if any, that would be issuable as if the end of the period was the end of the performance period. The Company has excluded any impact of the preferred stock to the calculation of diluted weighted average common shares outstanding as it has the positive intent and ability to redeem the preferred stock in cash. When a loss attributable to common shareholders exists, all potentially dilutive common shares outstanding are anti-dilutive and therefore excluded from the calculation of diluted weighted average shares outstanding.

The following table summarizes the calculation of net income (loss) attributable to common shareholders per common share:

	Years Ended December 31,
	2018			2017			2016
	(In thousands, except per share amounts)
Net Income (Loss)		$404,427			$87,110			($675,474	)
Dividends on preferred stock	(18,161		)	(7,781		)	—
Accretion on preferred stock	(3,057		)	(862		)	—
Loss on redemption of preferred stock	(7,133		)	—			—
Net Income (Loss) Attributable to Common Shareholders		$376,076			$78,467			($675,474	)
Basic weighted average common shares outstanding	85,509			73,421			59,932
Dilutive effect of restricted stock and performance shares	949			269			—
Dilutive effect of common stock warrants	685			303			—
Diluted weighted average common shares outstanding	87,143			73,993			59,932
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$4.40			$1.07			($11.27	)
Diluted		$4.32			$1.06			($11.27	)

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The computation of diluted net income attributable to common shareholders per common share excluded certain restricted stock and performance shares as the impacts were anti-dilutive. The following table presents the weighted average anti-dilutive securities for the periods presented:

	Years Ended December 31,
	2018	2017	2016
	(In thousands)
Anti-dilutive restricted stock and performance shares	19	52	669

Industry Segment and Geographic Information

The Company operates in only one industry segment, which is the exploration, development, and production of crude oil, NGLs, and natural gas. All of the Company’s operations are located in the United States and currently all revenues are attributable to customers located in the United States.

Recently Adopted Accounting Standards

Revenue From Contracts with Customers. Effective January 1, 2018, the Company adopted ASU No. 2014-09, Revenue From Contracts With Customers (Topic 606) (“ASC 606”) using the modified retrospective method and has applied the standard to all existing contracts. ASC 606 supersedes previous revenue recognition requirements in ASC 605 - Revenue Recognition (“ASC 605”) and includes a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration in exchange for those goods or services. As a result of adopting ASC 606, the Company did not have a cumulative-effect adjustment in retained earnings. The comparative information for the years ended December 31, 2017 and 2016 has not been recast and continues to be reported under the accounting standards in effect for that period. Additionally, adoption of ASC 606 did not impact net income attributable to common shareholders.

The tables below summarize the impact of adoption for the year ended December 31,2018:

	Year Ended December 31, 2018
	Under ASC 606		Under ASC 605		Increase		% Increase
	(In thousands)
Revenues
Crude oil		$911,554		$910,975		$579	0.1	%
Natural gas liquids	96,585		91,608		4,977		5.4	%
Natural gas	57,803		55,023		2,780		5.1	%
Total revenues	1,065,942		1,057,606		8,336		0.8	%
Costs and Expenses
Lease operating	161,596		153,260		8,336		5.4	%
Income Before Income Taxes		$409,600		$409,600		$—	—	%

Changes to crude oil, NGL, and natural gas revenues and lease operating expense are due to the conclusion that the Company controls the product throughout processing before transferring to the customer for certain natural gas processing arrangements. Therefore, any transportation, gathering, and processing fees incurred prior to transfer of control are included in lease operating expense.

Business Combinations. In January 2017, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which clarifies the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions (or divestitures) of assets or businesses. Effective January 1, 2018, the Company adopted ASU 2017-01 using the prospective method and applied the clarified definition of a business to subsequent acquisitions and divestitures.

Statement of Cash Flows. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”), which is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. The guidance addresses eight specific cash flow issues for which current GAAP is either unclear or does not include specific guidance. Effective January 1, 2018, the Company adopted ASU 2016-15 using the retrospective approach as prescribed by ASU 2016-15. There were no changes to the statement of cash flows as a result of adoption.

Stock Compensation. In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment

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Accounting (“ASU 2016-09”), which amends certain aspects of accounting for share-based payment arrangements. ASU 2016-09 revises or provides alternative accounting for the tax impacts of share-based payment arrangements, forfeitures, minimum statutory tax withholdings, and prescribes certain disclosures to be made in the period of adoption.

Effective January, 1, 2017, the Company adopted ASU 2016-09. Using the modified retrospective approach as prescribed by ASU 2016-09, the Company recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets, which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative-effect adjustment to retained earnings of zero. Effective January 1, 2017, all windfall tax benefits and tax shortfalls are recorded as income tax expense or benefit in the consolidated statements of operations, whereas prior to adoption, windfall tax benefits were recorded as an increase to additional paid-in capital. In addition, windfall tax benefits, along with tax shortfalls, are now required to be classified as an operating cash flow as opposed to a financing cash flow. Further, the Company has elected to account for forfeitures of share-based payment awards as they occur, which resulted in an immaterial cumulative-effect adjustment to retained earnings.

Recently Issued Accounting Pronouncements

Leases. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which significantly changes accounting for leases by requiring that lessees recognize a right-of-use (“ROU”) asset and a related lease liability representing the obligation to make lease payments, for virtually all lease transactions. ASU 2016-02 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. Additional disclosures about an entity’s lease transactions will also be required. ASU 2016-02 defines a lease as “a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment (an identified asset) for a period of time in exchange for consideration.” ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018 with early adoption permitted. ASU 2016-02 requires companies to recognize and measure leases at the beginning of the earliest period presented in the financial statements using a modified retrospective approach.

The Company will adopt ASU 2016-02 effective January 1, 2019, using the modified retrospective approach. The Company will make certain elections allowing it to not reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for land easements, not to recognize ROU assets or lease liabilities for short-term leases, and will not separate lease components from non-lease components for specified asset classes. The Company has implemented a third party software which will be used to track and account for lease activity. As of December 31, 2018, the Company anticipates that the adoption of ASU 2016-02 will result in the recognition of ROU assets and lease liabilities on its consolidated balance sheets ranging from $75.0 million to $100.0 million primarily associated with office space contracts, drilling rig contracts, and contracts for the use of vehicles, information technology infrastructure and well equipment. However, the Company does not expect ASU 2016-02 to have a significant impact on its consolidated statements of operations or consolidated statements of cash flows. The Company is finalizing its accounting policies, controls, processes, and disclosures that will change as a result of adopting the new standard. As permitted by ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, the Company does not expect to adjust comparative-period financial statements.

Subsequent Events

The Company evaluates subsequent events through the date the financial statements are issued. See “Note 16. Subsequent Events” for further discussion.

3. Acquisitions and Divestitures of Oil and Gas Properties

2018 Acquisitions and Divestitures

Devon Acquisition. On August 13, 2018, the Company entered into a purchase and sale agreement with Devon Energy Production Company, L.P. (“Devon”), a subsidiary of Devon Energy Corporation, to acquire oil and gas properties in the Delaware Basin in Reeves and Ward counties, Texas (the “Devon Properties”) for an agreed upon price of $215.0 million, with an effective date of April 1, 2018, subject to customary purchase price adjustments (the “Devon Acquisition”). The Company paid $21.5 million as a deposit on August 13, 2018 and $183.4 million upon initial closing on October 17, 2018, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date. The Company estimates the aggregate purchase price will be $196.6 million, however, the final purchase price remains subject to post-closing adjustments. The Company funded the Devon Acquisition with net proceeds from the common stock offering completed on August 17, 2018, which, pending the closing of the Devon Acquisition, were used to temporarily repay a portion of the borrowings outstanding under the revolving credit facility. See “Note 10. Shareholders’ Equity” for further discussion.

The Devon Acquisition was accounted for as a business combination, therefore, the purchase price was allocated to the assets acquired and the liabilities assumed based on their estimated acquisition date fair values based on then currently available information. A combination of a discounted cash flow model and market data was used by a third-party valuation specialist in determining the fair value of the oil and gas properties. Significant inputs into the calculation included future commodity prices,

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estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs and a risk adjusted discount rate. The following presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.

	Preliminary Purchase Price Allocation
	(In thousands)
Assets
Oil and gas properties
Proved properties		$47,370
Unproved properties	150,253
Total oil and gas properties		$197,623
Total assets acquired		$197,623
Liabilities
Revenues and royalties payable		$855
Asset retirement obligations	170
Total liabilities assumed		$1,025
Net Assets Acquired		$196,598

The results of operations for the Devon Acquisition have been included in the Company’s consolidated statements of operations since the October 17, 2018 closing date, including total revenues $4.6 million and net income attributable to common shareholders of $2.7 million for the year ended December 31, 2018.

Pro Forma Operating Results (Unaudited). The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the years ended December 31, 2018 and 2017, assuming the Devon Acquisition had been completed as of January 1, 2017, including adjustments to reflect the acquisition date fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the Devon Acquisition.

	Years Ended December 31,
	2018		2017
	(In thousands, except per share amounts)
Total revenues		$1,086,742		$753,474
Net Income Attributable to Common Shareholders		$384,639		$78,118
Net Income Attributable to Common Shareholders Per Common Share
Basic		$4.21		$0.94
Diluted		$4.13		$0.94
Weighted Average Common Shares Outstanding
Basic	91,444		82,921
Diluted	93,077		83,493

Delaware Basin Divestiture. On July 11, 2018, the Company closed on the divestiture of certain non-operated assets in the Delaware Basin for an agreed upon price of $30.0 million, with an effective date of May 1, 2018, subject to customary purchase price adjustments. The Company received $31.4 million upon closing on July 11, 2018 and paid $0.5 million upon post-closing on October 22, 2018, for aggregate net proceeds of $30.9 million.

Eagle Ford Divestiture. On December 11, 2017, the Company entered into a purchase and sale agreement with EP Energy E&P Company, L.P. to sell a portion of its assets in the Eagle Ford Shale for an agreed upon price of $245.0 million, with an effective date of October 1, 2017, subject to adjustment and customary terms and conditions. The Company received $24.5 million as a deposit on December 11, 2017, $211.7 million upon closing on January 31, 2018, $10.0 million for leases that were not conveyed at closing on February 16, 2018, and paid $0.5 million upon post-closing on July 19, 2018, for aggregate net proceeds of $245.7 million.

F-17

Niobrara Divestiture.On November 20, 2017, the Company entered into a purchase and sale agreement to sell substantially all of its assets in the Niobrara Formation for an agreed upon price of $140.0 million, with an effective date of October 1, 2017, subject to customary purchase price adjustments. The Company received $14.0 million as a deposit on November 20, 2017, $122.6 million upon closing on January 19, 2018, and paid $1.0 million upon post-closing on August 14, 2018, for aggregate net proceeds of $135.6 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Niobrara Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

The aggregate net proceeds for each of the 2018 divestitures discussed above were recognized as a reduction of proved oil and gas properties with no gain or loss recognized.

2017 Acquisitions and Divestitures

ExL Acquisition. On June 28, 2017, the Company entered into a purchase and sale agreement with ExL Petroleum Management, LLC and ExL Petroleum Operating Inc. to acquire oil and gas properties located in the Delaware Basin in Reeves and Ward counties, Texas for an agreed upon price of $648.0 million, with an effective date of May 1, 2017, subject to customary purchase price adjustments (the “ExL Acquisition”). The Company paid $75.0 million as a deposit on June 28, 2017, $601.0 million upon closing on August 10, 2017 and $3.8 million upon post-closing on December 8, 2017, for an aggregate cash consideration of $679.8 million, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date. As part of the ExL Acquisition, the Company agreed to a contingent consideration arrangement (the “Contingent ExL Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

The Company funded the ExL Acquisition with net proceeds from the sale of preferred stock on August 10, 2017, net proceeds from the common stock offering completed on July 3, 2017, and net proceeds from the senior notes offering completed on July 14, 2017. See “Note 9. Preferred Stock and Common Stock Warrants”, “Note 10. Shareholders’ Equity” and “Note 6. Long-Term Debt” for further discussion.

The ExL Acquisition was accounted for as a business combination, therefore, the purchase price was allocated to the assets acquired and the liabilities assumed based on their estimated acquisition date fair values based on then currently available information. A combination of a discounted cash flow model and market data was used by a third-party valuation specialist in determining the fair value of the oil and gas properties. Significant inputs into the calculation included future commodity prices, estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs and a risk adjusted discount rate. The fair value of the Contingent ExL Consideration was determined by a third-party valuation specialist using a Monte Carlo simulation. Significant inputs into the calculation included future commodity prices, volatility factors for the future commodity prices and a risk adjusted discount rate. See “Note 13. Fair Value Measurements” for further discussion.

The following presents the final allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.

	Purchase Price Allocation
	(In thousands)
Assets
Other current assets		$106
Oil and gas properties
Proved properties	294,754
Unproved properties	443,194
Total oil and gas properties		$737,948
Total assets acquired		$738,054
Liabilities
Revenues and royalties payable		$5,785
Asset retirement obligations	153
Contingent ExL Consideration	52,300
Total liabilities assumed		$58,238
Net Assets Acquired		$679,816

F-18

The results of operations for the ExL Acquisition have been included in the Company’s consolidated statements of operations since the August 10, 2017 closing date, including total revenues and net income attributable to common shareholders for the years ended December 31, 2018 and 2017 as shown in the table below:

	Years Ended December 31,
	2018		2017
	(In thousands)
Total revenues		$225,135		$53,548
Net Income Attributable to Common Shareholders		$176,881		$44,304

Pro Forma Operating Results (Unaudited). The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the years ended December 31, 2017 and 2016, assuming the ExL Acquisition had been completed as of January 1, 2016, including adjustments to reflect the acquisition date fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the ExL Acquisition.

	Years Ended December 31,
	2017		2016
	(In thousands, except per share amounts)
Total revenues		$781,378		$454,913
Net Income (Loss) Attributable to Common Shareholders		$91,931		($688,180	)
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$1.25		($9.11	)
Diluted		$1.24		($9.11	)
Weighted Average Common Shares Outstanding
Basic	73,421		75,532
Diluted	73,993		75,532

Marcellus Divestiture. On October 5, 2017, the Company entered into a purchase and sale agreement with BKV Chelsea, LLC, a subsidiary of Kalnin Ventures LLC, to sell substantially all of its assets in the Marcellus Shale for an agreed upon price of $84.0 million. The Company received $6.3 million into escrow as a deposit on October 5, 2017 and $67.6 million upon closing on November 21, 2017, for aggregate net proceeds of $73.9 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Marcellus Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

Effective August 2008, the Company’s wholly-owned subsidiary, Carrizo (Marcellus) LLC, entered into a joint venture with ACP II Marcellus LLC (“ACP II”), an affiliate of Avista Capital Partners, LP, a private equity fund (Avista Capital Partners, LP, together with its affiliates, “Avista”). There have been no revenues, expenses, or operating cash flows in the Avista Marcellus joint venture during the years ended December 31, 2018, 2017, and 2016. The Avista Marcellus joint venture agreements terminated during the third quarter of 2018 in connection with the sale of the remaining immaterial assets.

Steven A. Webster, Chairman of the Company’s Board of Directors, serves as Co-Managing Partner and President of Avista Capital Holdings, LP, which has the ability to control Avista and its affiliates. ACP II’s Board of Managers has the sole authority for determining whether, when and to what extent any cash distributions will be declared and paid to members of ACP II. Mr. Webster is not a member of ACP II’s Board of Managers. The terms of the Avista Marcellus joint venture were approved by a special committee of the Company’s independent directors. Additionally, in 2018, the Company’s Board of Directors determined that Mr. Webster is independent with respect to the Company.

Utica Divestiture. On August 31, 2017, the Company entered into a purchase and sale agreement to sell substantially all of its assets in the Utica Shale for an agreed upon price of $62.0 million. The Company received $6.2 million as a deposit on August 31, 2017, $54.4 million upon closing on November 15, 2017, and $2.5 million upon post-closing on December 28, 2017, for aggregate net proceeds of $63.1 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Utica Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

F-19

Delaware Basin Divestiture. During the first quarter of 2017, the Company sold a small undeveloped acreage position in the Delaware Basin for aggregate net proceeds of $15.3 million.

The aggregate net proceeds for each of the 2017 divestitures discussed above were recognized as a reduction of proved oil and gas properties with no gain or loss recognized.

2016 Acquisitions and Divestitures

Sanchez Acquisition. On October 24, 2016, the Company entered into a purchase and sale agreement with Sanchez Energy Corporation and SN Cotulla Assets, LLC, a subsidiary of Sanchez Energy Corporation to acquire oil and gas properties located in the Eagle Ford Shale for an agreed upon price of $181.0 million, with an effective date of June 1, 2016, subject to customary purchase price adjustments (the “Sanchez Acquisition”). The Company paid $10.0 million as a deposit on October 24, 2016, $143.5 million upon initial closing on December 14, 2016, and $7.0 million and $9.8 million on January 9, 2017 and April 13, 2017, respectively, for leases that were not conveyed to the Company at the time of the initial closing, for aggregate cash consideration of $170.3 million, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date.

The Sanchez Acquisition was accounted for as a business combination, therefore, the purchase price was allocated to the assets acquired and liabilities assumed based on their estimated acquisition date fair values based on then currently available information.

The results of operations for the Sanchez Acquisition have been included in the Company’s consolidated statements of operations since the December 14, 2016 closing date, including total revenues and net income attributable to common shareholders for the years ended December 31, 2018, 2017, and 2016 as shown in the table below:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
Total revenues		$57,780		$37,780		$1,459
Net Income Attributable to Common Shareholders		$38,551		$16,459		$966

The Company did not have any material divestitures for the year ended December 31,2016.

4. Property and Equipment, Net

As of December 31, 2018 and 2017, total property and equipment, net consisted of the following:

	December 31,
	2018			2017
Oil and gas properties, full cost method	(In thousands)
Proved properties		$6,278,321			$5,615,153
Accumulated DD&A and impairments	(3,944,851		)	(3,649,806		)
Proved properties, net	2,333,470			1,965,347
Unproved properties, not being amortized
Unevaluated leasehold and seismic costs	608,830			612,589
Capitalized interest	65,003			47,698
Total unproved properties, not being amortized	673,833			660,287
Other property and equipment	29,191			25,625
Accumulated depreciation	(17,970		)	(15,449		)
Other property and equipment, net	11,221			10,176
Total property and equipment, net		$3,018,524			$2,635,810

The Company capitalized internal costs of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities totaling $17.0 million, $14.8 million and $10.5 million for the years ended December 31, 2018, 2017 and 2016, respectively.

The Company capitalized interest costs to unproved properties totaling $36.6 million, $28.3 million and $17.0 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Costs not subject to amortization totaling $673.8 million at December 31, 2018 were incurred in the following periods: $218.9 million in 2018, $397.7 million in 2017 and $57.2 million in 2016.

F-20

Impairments of Proved Oil and Gas Properties

The Company did not recognize impairments of proved oil and gas properties for the years ended December 31, 2018 and 2017. Primarily due to declines in the 12-Month Average Realized Price of crude oil, the Company recognized impairments of proved oil and gas properties of $576.5 million for the year ended December 31, 2016.

5. Income Taxes

The components of income tax expense were as follows:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Current income tax expense
U.S. Federal		$—			$—			$—
State	(792		)	(395		)	—
Total current income tax expense	(792		)	(395		)	—
Deferred income tax expense
U.S. Federal	—			—			—
State	(4,381		)	(3,635		)	—
Total deferred income tax expense	(4,381		)	(3,635		)	—
Income tax expense		($5,173	)		($4,030	)		$—

The Company’s income tax expense differs from the income tax expense computed by applying the U.S. federal statutory corporate income tax rate of 21% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016, to income (loss) before income taxes as follows:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Income (loss) before income taxes		$409,600			$91,140			($675,474	)
Income tax (expense) benefit at the U.S. federal statutory rate	(86,016		)	(31,899		)	236,416
State income tax (expense) benefit, net of U.S. federal income tax benefit	(5,173		)	(4,030		)	3,894
Tax deficiencies related to stock-based compensation	(2,572		)	(3,089		)	—
Provisional impact of Tax Cuts and Jobs Act	—			(211,724		)	—
Change in valuation allowance from provisional impact of Tax Cuts and Jobs Act	—			211,724			—
(Increase) decrease in valuation allowance due to current period activity	90,116			35,376			(240,864		)
Other	(1,528		)	(388		)	554
Income tax expense		($5,173	)		($4,030	)		$—

Significant changes in the Company’s operations impact the apportionment of taxable income to the states where the Company owns oil and gas properties. As discussed in “Note 3. Acquisitions and Divestitures of Oil and Gas Properties,” beginning in 2017 and continuing into 2018, the Company divested all of its assets in Marcellus, Utica, and Niobrara, and is currently operating solely in Texas. This operational shift has resulted in current and deferred tax liabilities in Texas that cannot be offset against the full valuation allowance that the Company has maintained.

F-21

Deferred Income Taxes

As of December 31, 2018 and 2017, the net deferred income tax liabilities are comprised of the following:

	December 31,
	2018			2017
	(In thousands)
Deferred income tax liabilities
Oil and gas properties		($16,610	)		($3,635	)
Derivative assets	(10,008		)	(2,140		)
Total deferred income tax liabilities	(26,618		)	(5,775		)
Deferred income tax assets
Net operating loss carryforward - U.S. federal and state	235,788			242,915
Oil and gas properties	—			50,177
Asset retirement obligations	3,927			4,996
Derivative liabilities	20,165			35,585
Other	1,634			1,496
Total deferred income tax assets	261,514			335,169
Deferred income tax asset valuation allowance	(242,913		)	(333,029		)
Net deferred income tax assets	18,601			2,140
Net deferred income tax liabilities		($8,017	)		($3,635	)

Tax Cuts and Jobs Act

On December 22, 2017, the U.S. Congress enacted the Tax Cuts and Jobs Act (the “Act”) which made significant changes to U.S. federal income tax law, including lowering the federal statutory corporate income tax rate to 21% from 35% beginning January 1, 2018. Due to the uncertainty regarding the application of ASC 740 in the period of enactment of the Act, the SEC issued Staff Accounting Bulletin 118 (“SAB 118”) which allowed the Company to provide a provisional estimate of the impacts of the Act in its earnings for the year ended December 31, 2017 and also provided a one-year measurement period in which the Company would record additional impacts from the enactment of the Act as they are identified. As a result, the Company remeasured its deferred tax balances by applying the reduced rate and recorded a provisional deferred tax expense of $211.7 million during the year ended December 31, 2017. This provisional deferred tax expense was fully offset by a $211.7 million deferred tax benefit as a result of the associated change in the valuation allowance against the net deferred tax assets. As reflected in the rate reconciliation above, the change in the deferred tax balances due to the rate reduction had no impact on the net deferred tax balances reported in the consolidated balance sheets as of December 31, 2017 and no impact in the consolidated statements of operations for the year ended December 31, 2017.

In August 2018, the Internal Revenue Service (“IRS”) issued Notice 2018-68, Guidance on the Application of Section 162(m) (“Notice 2018-68”), which provides initial guidance on the application of Section 162(m), as amended. Notice 2018-68 provided guidance regarding the group of covered employees subject to Section 162(m)’s deduction limit under the Act and the scope of transition relief available under the Act.

In November 2018, the IRS issued proposed regulations on business interest expense deduction limitations for tax years beginning after 2017, which included an expanded definition of what is considered interest expense as well as changes to the calculation of a taxpayer’s adjusted taxable income in computing the interest expense limitation. The Company has assessed these proposed regulations as they pertain to the provisional tax estimate for the year ended December 31, 2018, and has concluded it will have no interest expense deduction limitation to be carried forward to future years for the 2018 tax year.

As of December 31, 2018, the Company has completed its accounting for the tax effects of enactment of the Act, with immaterial changes made to the provisional estimate that was recorded in earnings for the year ended December 31, 2017.

Deferred Tax Asset Valuation Allowance

The deferred tax asset valuation allowance was $242.9 million, $333.0 million, and $564.4 million as of December 31, 2018, 2017, and 2016, respectively. Effective January 1, 2017, the Company adopted ASU 2016-09, and recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets, which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative-effect adjustment to retained earnings of zero and brought the valuation allowance to $580.1 million as of January 1, 2017. Decreases in the valuation allowance for the years ended December 31, 2018 and 2017 were based primarily on the pre-tax income recorded during those periods.

F-22

Throughout 2016, 2017, and 2018, the Company maintained a full valuation allowance against its deferred tax assets based on its conclusion, considering all available evidence (both positive and negative), that it was more likely than not the deferred taxes would not be realized. The Company intends to maintain a full valuation allowance against its deferred tax assets until there is sufficient evidence to support the reversal of such valuation allowance.

Net Operating Loss Carryforwards and Other

Net Operating Loss Carryforwards. As of December 31, 2018, the Company had U.S. federal net operating loss carryforwards of approximately $1,062.5 million that, if not utilized in earlier periods, will expire between 2026 and 2037.

The ability of the Company to utilize its U.S. loss carryforwards to reduce future taxable income is subject to various limitations under the Internal Revenue Code of 1986, as amended (the “Code”). The utilization of such carryforwards may be limited upon the occurrence of certain ownership changes, including the purchase or sale of stock by 5% shareholders and the offering of stock by the Company during any three-year period resulting in an aggregate change of more than 50% in the beneficial ownership of the Company. In the event of an ownership change, Section 382 of the Code imposes an annual limitation on the amount of the Company’s taxable income that can be offset by these carryforwards. The limitation is generally equal to the product of (i) the fair market value of the equity of the Company multiplied by (ii) a percentage approximately equivalent to the yield on long-term tax exempt bonds during the month in which an ownership change occurs. In addition, the limitation is increased if there are recognized built-in gains during any post-change year, but only to the extent of any net unrealized built-in gains inherent in the assets sold.

Due to the issuance of the Preferred Stock and the common stock offering associated with the ExL Acquisition, as well as the common stock offering in August 2018, the Company’s calculated ownership change percentage increased, however, as of December 31, 2018, the Company did not have a Section 382 limitation on the ability to utilize its U.S. net operating loss carryforwards. Future equity transactions involving the Company or 5% shareholders of the Company (including, potentially, relatively small transactions and transactions beyond the Company’s control) could cause further ownership changes and therefore a limitation on the annual utilization of the U. S. net operating loss carryforwards.

Other. The Company files income tax returns in the U.S. federal jurisdiction and various states, each with varying statutes of limitations. The 2006 through 2018 tax years generally remain subject to examination by federal and state tax authorities. As of December 31, 2018, 2017 and 2016, the Company had no uncertain tax positions.

6. Long-Term Debt

Long-term debt consisted of the following as of December 31, 2018 and 2017:

	December 31,
	2018			2017
	(In thousands)
Senior Secured Revolving Credit Facility due 2022		$744,431			$291,300
7.50% Senior Notes due 2020	—			450,000
Unamortized premium for 7.50% Senior Notes	—			579
Unamortized debt issuance costs for 7.50% Senior Notes	—			(4,492		)
6.25% Senior Notes due 2023	650,000			650,000
Unamortized debt issuance costs for 6.25% Senior Notes	(6,878		)	(8,208		)
8.25% Senior Notes due 2025	250,000			250,000
Unamortized debt issuance costs for 8.25% Senior Notes	(3,962		)	(4,395		)
Other long-term debt due 2028	—			4,425
Long-term debt		$1,633,591			$1,629,209

Senior Secured Revolving Credit Facility

The Company has a senior secured revolving credit facility with a syndicate of banks that, as of December 31, 2018, had a borrowing base of $1.3 billion, with an elected commitment amount of $1.1 billion, and borrowings outstanding of $744.4 million at a weighted average interest rate of 4.17%. The credit agreement governing the revolving credit facility provides for interest-only payments until May 4, 2022, when the credit agreement matures and any outstanding borrowings are due. The borrowing base under the credit agreement is subject to regular redeterminations in the spring and fall of each year, as well as special redeterminations described in the credit agreement, which in each case may reduce the amount of the borrowing base. The amount the Company is able to borrow with respect to the borrowing base is subject to compliance with the financial covenants and other provisions of the credit agreement. The capitalized terms which are not defined in this description of the revolving credit facility, shall have the meaning given to such terms in the credit agreement.

F-23

On January 31, 2018, as a result of the Eagle Ford divestiture, the Company’s borrowing base under the senior secured revolving credit facility was reduced from $900.0 million to $830.0 million, however, the elected commitment amount remained unchanged at $800.0 million. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for details of the Eagle Ford divestiture.

On May 4, 2018, the Company entered into the twelfth amendment to its credit agreement governing the revolving credit facility to, among other things, (i) establish the borrowing base at $1.0 billion, with an elected commitment amount of $900.0 million, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 2.00%-3.00% to 1.50%-2.50% and base rate loans from 1.00%-2.00% to 0.50%-1.50%, each depending on level of facility usage, (iii) amend the covenant limiting payment of dividends and distributions on equity to increase the Company’s ability to make dividends and distributions on its equity interests and (iv) amend certain other provisions, in each case as set forth therein.

On October 29, 2018, the Company entered into the thirteenth amendment to its credit agreement governing its revolving credit facility to, among other things, (i) establish the borrowing base at $1.3 billion, with an elected commitment amount of $1.1 billion, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 1.50%-2.50% to 1.25%-2.25% and base rate loans from 0.50%-1.50% to 0.25%-1.25%, each depending on the level of facility usage and each subject to an increase of 0.25% for any period during which the ratio of Total Debt to EBITDA exceeds 3.00 to 1.00, (iii) amend the definition of Capital Leases, and (iv) amend certain other definitions and provisions.

The obligations of the Company under the credit agreement are guaranteed by the Company’s material subsidiaries and are secured by liens on substantially all of the Company’s assets, including a mortgage lien on oil and gas properties having at least 90% of the total value of the oil and gas properties included in the Company’s reserve report used in its most recent redetermination.

Borrowings outstanding under the credit agreement bear interest at the Company’s option at either (i) a base rate for a base rate loan plus the margin set forth in the table below, where the base rate is defined as the greatest of the prime rate, the federal funds rate plus 0.50% and the adjusted LIBO rate plus 1.00%, or (ii) an adjusted LIBO rate for a Eurodollar loan plus the margin set forth in the table below. The Company also incurs commitment fees at rates as set forth in the table below on the unused portion of lender commitments, which are included in “Interest expense, net” in the consolidated statements of operations.

Ratio of Outstanding Borrowings to Lender Commitments	Applicable Margin for Base Rate Loans	Applicable Margin for Eurodollar Loans	Commitment Fee
Less than 25%	0.25%	1.25%	0.375%
Greater than or equal to 25% but less than 50%	0.50%	1.50%	0.375%
Greater than or equal to 50% but less than 75%	0.75%	1.75%	0.500%
Greater than or equal to 75% but less than 90%	1.00%	2.00%	0.500%
Greater than or equal to 90%	1.25%	2.25%	0.500%

The Company is subject to certain covenants under the terms of the credit agreement, which include the maintenance of the following financial covenants determined as of the last day of each quarter: (1) a ratio of Total Debt to EBITDA of not more than 4.00 to 1.00 and (2) a Current Ratio of not less than 1.00 to 1.00. As defined in the credit agreement, Total Debt excludes debt issuance costs and is net of cash and cash equivalents, EBITDA will be calculated based on the last four fiscal quarters after giving pro forma effect to EBITDA for material acquisitions and divestitures of oil and gas properties, and the Current Ratio includes an add back of the unused portion of lender commitments. As of December 31, 2018, the ratio of Total Debt to EBITDA was 2.41 to 1.00 and the Current Ratio was 1.51 to 1.00. Because the financial covenants are determined as of the last day of each quarter, the ratios can fluctuate significantly period to period as the level of borrowings outstanding under the credit agreement are impacted by the timing of cash flows from operations, capital expenditures, acquisitions and divestitures of oil and gas properties and securities offerings.

The credit agreement also places restrictions on the Company and certain of its subsidiaries with respect to additional indebtedness, liens, dividends and other payments to shareholders, repurchases or redemptions of the Company’s common stock, redemptions of senior notes, investments, acquisitions and divestitures of oil and gas properties, mergers, transactions with affiliates, hedging transactions and other matters.

The credit agreement is subject to customary events of default, including in connection with a change in control. If an event of default occurs and is continuing, the lenders may elect to accelerate amounts due under the credit agreement (except in the case of a bankruptcy event of default, in which case such amounts will automatically become due and payable).

Senior Notes

8.25% Senior Notes due 2025. On July 14, 2017, the Company closed a public offering of $250.0 million aggregate principal amount of 8.25% Senior Notes due 2025 (the “8.25% Senior Notes”), which mature on July 15, 2025 and have interest payable semi-annually each January 15 and July 15. Before July 15, 2020, the Company may, at its option, redeem all or a portion of the 8.25% Senior Notes at 100% of the principal amount plus accrued and unpaid interest and a make-whole premium. Thereafter,

F-24

the Company may redeem all or a portion of the 8.25% Senior Notes at redemption prices decreasing annually from 106.188% to 100% of the principal amount redeemed plus accrued and unpaid interest. The Company used the net proceeds of $245.4 million, net of underwriting discounts and commissions and offering costs, to fund a portion of the purchase price for the ExL Acquisition that closed during the third quarter of 2017 and for general corporate purposes.

6.25% Senior Notes due 2023. Since April 15, 2018, the Company has had the right to redeem all or a portion of the 6.25% Senior Notes due 2023 (the “6.25% Senior Notes”) at redemption prices decreasing from 104.688% to 100% of the principal amount on April 15, 2021, plus accrued and unpaid interest.

If a Change of Control (as defined in the indentures governing the 8.25% Senior Notes and the 6.25% Senior Notes) occurs, the Company may be required by holders to repurchase the 8.25% Senior Notes and the 6.25% Senior Notes for cash at a price equal to 101% of the principal amount purchased, plus any accrued and unpaid interest.

The indentures governing the 8.25% Senior Notes and the 6.25% Senior Notes contain covenants that, among other things, limit the Company’s ability and the ability of its restricted subsidiaries to: pay distributions on, purchase or redeem the Company’s common stock or other capital stock or redeem the Company’s subordinated debt; make investments; incur or guarantee additional indebtedness or issue certain types of equity securities; create certain liens; sell assets; consolidate, merge or transfer all or substantially all of the Company’s assets; enter into agreements that restrict distributions or other payments from the Company’s restricted subsidiaries to the Company; engage in transactions with affiliates; and create unrestricted subsidiaries. Such indentures governing the Company’s senior notes are also subject to customary events of default, including those related to failure to comply with the terms of the notes and the indenture, certain failures to file reports with the SEC, certain cross defaults of other indebtedness and mortgages and certain failures to pay final judgments. At December 31, 2018, the 8.25% Senior Notes and the 6.25% Senior Notes are guaranteed by the same subsidiaries that also guarantee the revolving credit facility.

Redemptions of 7.50% Senior Notes

During the fourth quarter of 2017, the Company redeemed $150.0 million of the outstanding aggregate principal amount of its 7.50% Senior Notes at a price equal to 101.875% of par, plus accrued and unpaid interest. The Company paid $156.0 million upon the redemption, which included a redemption premium of $2.8 million and accrued and unpaid interest of $3.2 million. As a result of the redemption, the Company recorded a loss on extinguishment of debt of $4.2 million, which included the redemption premium of $2.8 million and the write-off of associated unamortized premiums and debt issuance costs of $1.4 million.

During the first and fourth quarters of 2018, the Company redeemed $320.0 million of the outstanding aggregate principal amount of its 7.50% Senior Notes at a price equal to 101.875% of par and the remaining $130.0 million outstanding aggregate principal amount at a redemption price of 100% of par, respectively, both plus accrued and unpaid interest. The Company paid a total of $468.6 million upon the redemptions, which included redemption premiums of $6.0 million and accrued and unpaid interest of $12.6 million. As a result of the redemptions, the Company recorded a loss on extinguishment of debt of $9.6 million, which included the redemption premiums of $6.0 million and the write-off of associated unamortized premiums and debt issuance costs of $3.6 million.

Redemption of Other Long-Term Debt

On May 3, 2018, the Company redeemed the remaining $4.4 million outstanding aggregate principal amount of its 4.375% Convertible Senior Notes due 2028 at a price equal to 100% of par. Upon the redemption, the Company paid $4.5 million, which included accrued and unpaid interest of $0.1 million.

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7. Asset Retirement Obligations

The following table sets forth a reconciliation of the Company’s asset retirement obligations for the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018			2017
	(In thousands)
Asset retirement obligations, beginning of period		$23,792			$21,240
Liabilities incurred	1,676			3,920
Increase due to acquisition of oil and gas properties	170			153
Liabilities settled	—			(343		)
Reduction due to divestitures of oil and gas properties	(8,547		)	(2,671		)
Accretion expense	1,366			1,799
Revisions to estimated cash flows	245			(306		)
Asset retirement obligations, end of period	18,702			23,792
Current asset retirement obligations (included in other current liabilities)	(342		)	(295		)
Non-current asset retirement obligations		$18,360			$23,497

8. Commitments and Contingencies

From time to time, the Company is party to certain legal actions and claims arising in the ordinary course of business. Pursuant to various purchase and sale agreements related to our divested assets in the Eagle Ford Shale, Marcellus Shale, Utica Shale, and Niobrara Formation, the Company has indemnified the respective purchasers against certain liabilities that they may incur with respect to the assets acquired from the Company. The Company believes such indemnities are customary in purchase and sale transactions in our industry.  Such indemnities may include, among others, breach of representations and warranties, tax liabilities, employee compensation, litigation, personal injury, transport or disposal of hazardous substances, calculation and payments of royalties, environmental matters and rights-of-way. 

While the outcome of these events cannot be predicted with certainty, as of December 31, 2018, management does not expect these indemnifications to have a materially adverse effect on the financial position or results of operations of the Company.

The financial position and results of operations of the Company continue to be affected from time to time in varying degrees by domestic and foreign political developments as well as legislation and regulations pertaining to restrictions on oil and gas production, imports and exports, tax changes, environmental regulations and cancellation of contract rights. Both the likelihood and overall effect of such occurrences on the Company vary greatly and are not predictable.

Rent expense included in general and administrative expense, net for the years ended December 31, 2018, 2017 and 2016 was $1.4 million, $1.7 million, and $2.0 million, respectively, and includes rent expense for the Company’s corporate and field offices. The table below presents total minimum commitments associated with long-term, non-cancelable leases, drilling rig contracts and gathering, processing and transportation service agreements, which require minimum volumes of natural gas or produced water to be delivered, as of December 31, 2018.

	2019		2020		2021		2022		2023		2024 and Thereafter		Total
	(In thousands)
Operating leases		$10,024		$9,154		$6,249		$3,639		$3,680		$20,978		$53,724
Drilling rig contracts (1)	37,077		16,867		813		—		—		—		54,757
Delivery commitments (2)	3,726		2,807		2,487		30		7		19		9,076
Produced water disposal commitments (3)	18,139		20,894		20,898		20,954		10,471		9,769		101,125
Other	1,800		1,050		—		—		—		—		2,850
Total		$70,766		$50,772		$30,447		$24,623		$14,158		$30,766		$221,532

(1) Drilling rig contracts represent gross contractual obligations and accordingly, other joint owners in the properties operated by us will generally be billed for their working interest share of such costs.

(2) Delivery commitments represent contractual obligations we have entered into for certain gathering, processing and transportation service agreements which require minimum volumes of natural gas to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any natural gas.

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(3) Produced water disposal commitments represent contractual obligations we have entered into for certain service agreements which require minimum volumes of produced water to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any produced water.

9. Preferred Stock and Common Stock Warrants

On August 20, 2017, the Company closed on the issuance and sale in a private placement of (i) $250.0 million initial liquidation preference (250,000 shares) of 8.875% redeemable preferred stock, par value $0.01 per share (the “Preferred Stock”) and (ii) warrants for 2,750,000 shares of the Company’s common stock, with a term of ten years and an exercise price of $16.08 per share, exercisable only on a net share settlement basis (the “Warrants”), for a cash purchase price equal to $970.00 per share of Preferred Stock to certain funds managed or sub-advised by GSO Capital Partners LP and its affiliates (the “GSO Funds”). The closing occurred contemporaneously with the closing of the ExL Acquisition. The Company used the proceeds of approximately $236.4 million, net of issuance costs to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes.

Net proceeds were allocated between the Preferred Stock and the Warrants based on their relative fair values at the issuance date, with $213.4 million allocated to the Preferred Stock and $23.0 million allocated to the Warrants. The fair value of the Preferred Stock was calculated by a third-party valuation specialist using a discounted cash flow model. Significant inputs into the calculation included the per share cash purchase price, redemption premiums, and liquidation preference, all as discussed further below, as well as redemption assumptions provided by the Company. The fair value of the Warrants was calculated using a Black-Scholes-Merton option pricing model, incorporating the following assumptions at the issuance date:

	Issuance Date Fair Value Assumptions
Exercise price	$16.08
Expected term (in years)	10.0
Expected volatility	62.9	%
Risk-free interest rate	2.2	%
Dividend yield	—	%

See “Note 13. Fair Value Measurements” for further discussion of the significant inputs used in the Preferred Stock fair value calculation.

The Preferred Stock is presented as temporary equity in the consolidated balance sheets with the issuance date fair value accreted to the initial liquidation preference using the effective interest method. The Warrants are presented in “Additional paid-in capital” in the consolidated balance sheets at their issuance date fair value.

The following table sets forth a reconciliation of changes in the carrying amount of Preferred Stock for the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018			2017
	(In thousands)
Preferred Stock, beginning of period		$214,262			$—
Relative fair value at issuance	—			213,400
Redemption of Preferred Stock	(42,897		)	—
Accretion on Preferred Stock	3,057			862
Preferred Stock, end of period		$174,422			$214,262

The Preferred Stock has a liquidation preference of $1,000.00 per share and bears an annual cumulative dividend rate of 8.875%, payable on March 15, June 15, September 15 and December 15 of any given year. The Company may elect to pay all or a portion of the Preferred Stock dividends in shares of its common stock in decreasing percentages as follows with respect to any preferred stock dividend declared by the Company’s Board of Directors and paid in respect of a quarter ending:

Period	Percentage
On or after December 15, 2018 and on or prior to September 15, 2019	75	%
On or after December 15, 2019 and on or prior to September 15, 2020	50	%

If the Company fails to satisfy the Preferred Stock dividend on the applicable dividend payment date, then the unpaid dividend will be added to the liquidation preference until paid.

The Preferred Stock outstanding is not mandatorily redeemable, but can be redeemed at the Company’s option and, in certain circumstances, at the option of the holders of the Preferred Stock. On or prior to August 10, 2018, the Company had the right to redeem up to 50,000 shares of Preferred Stock, in cash, at $1,000.00 per share, plus accrued and unpaid dividends in an amount

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not to exceed the sum of the cash proceeds of divestitures of oil and gas properties and related assets, the sale or issuance of the Company’s common stock and the sale of any of the Company’s wholly owned subsidiaries.

In addition, at any time on or prior to August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at a redemption premium of 104.4375%, plus accrued and unpaid dividends and the present value on the redemption date of all quarterly dividends that would be payable from the redemption date through August 10, 2020. After August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at redemption premiums, as presented in the table below, plus accrued but unpaid dividends.

Period	Percentage
After August 10, 2020 but on or prior to August 10, 2021	104.4375	%
After August 10, 2021 but on or prior to August 10, 2022	102.21875	%
After August 10, 2022	100	%

The holders of the Preferred Stock have the option to cause the Company to redeem the Preferred Stock under the following conditions:

• Upon the Company’s failure to pay a quarterly dividend within three months of the applicable payment date;

• On or after August 10, 2024, if the Preferred Shares remain outstanding; or

• Upon the occurrence of certain changes of control.

For the first two conditions described above, the Company has the option to settle any such redemption in cash or shares of its common stock and the holders of the Preferred Stock may elect to revoke or reduce the redemption if the Company elects to settle in shares of common stock.

The Preferred Stock are non-voting shares except as required by the Company’s articles of incorporation or bylaws. However, so long as the GSO Funds beneficially own more than 50% of the Preferred Stock, the consent of the holders of the Preferred Stock will be required prior to issuing stock senior to or on parity with the Preferred Stock, incurring indebtedness subject to a leverage ratio, agreeing to certain restrictions on dividends on, or redemption of, the Preferred Stock and declaring or paying dividends on the Company’s common stock in excess of $15.0 million per year subject to a leverage ratio. Additionally, if the Company does not redeem the Preferred Stock before August 10, 2024, in connection with a change of control or failure to pay a quarterly dividend within three months of the applicable payment date, the holders of the Preferred Stock are entitled to additional rights including:

• Increasing the dividend rate to 12.0% per annum until August 10, 2024 and thereafter to the greater of 12.0% per annum and the one-month LIBOR plus 10.0%;

• Electing up to two directors to the Company’s Board of Directors; and

• Requiring approval by the holders of the Preferred Stock to incur indebtedness subject to a leverage ratio, declaring or paying dividends on the Company’s common stock in excess of $15.0 million per year or issuing equity of the Company’s subsidiaries to third parties.

Loss on Redemption of Preferred Stock

During the first quarter of 2018, the Company redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and accrued and unpaid dividends of $0.5 million. The Company recognized a $7.1 million loss on the redemption due to the excess of the $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock.

10. Shareholders’ Equity

Increase in Authorized Common Shares

At the Company’s annual meeting of shareholders on May 16, 2017, shareholders approved an amendment to the Company’s Amended and Restated Articles of Incorporation to increase the number of authorized shares of common stock from 90,000,000 to 180,000,000.

Sales of Common Stock

On August 17, 2018, the Company completed a public offering of 9.5 million shares of its common stock at a price per share of $22.55. The Company used the proceeds of $213.7 million, net of offering costs, to fund the Devon Acquisition and for general corporate purposes. Pending the closing of the Devon Acquisition, the Company used the net proceeds to temporarily repay a portion of the borrowings outstanding under the revolving credit facility.

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On July 3, 2017, the Company completed a public offering of 15.6 million shares of its common stock at a price per share of $14.28. The Company used the proceeds of $222.4 million, net of offering costs, to fund a portion of the ExL Acquisition and for general corporate purposes.

On October 28, 2016, the Company completed a public offering of 6.0 million shares of its common stock at a price per share of $37.32. The Company used the proceeds of $223.7 million, net of offering costs, to fund the Sanchez Acquisition and repay borrowings under the revolving credit facility. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition.

See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the acquisitions discussed above.

11. Stock-Based Compensation

Equity-based incentive awards are granted under the 2017 Incentive Plan of Carrizo Oil & Gas, Inc. (the “2017 Incentive Plan”) and the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (“Cash SAR Plan”). The 2017 Incentive Plan replaced the Incentive Plan of Carrizo Oil & Gas, Inc., as amended and restated effective May 15, 2014 (the “Prior Incentive Plan”) and, from the effective date of the 2017 Incentive Plan, no further awards may be granted under the Prior Incentive Plan. However, awards previously granted under the Prior Incentive Plan will remain outstanding in accordance with their terms. Under the 2017 Incentive Plan, the Compensation Committee of the Board of Directors (the “Committee”) may grant restricted stock awards and units, stock appreciation rights that can be settled in cash or shares of common stock, performance shares, and stock options to employees, independent contractors, and non-employee directors. Under the Cash SAR Plan, the Committee may grant stock appreciation rights that may only be settled in cash to employees and independent contractors.

The 2017 Incentive Plan provides that up to 2,675,000 shares of the Company’s common stock, plus the shares remaining available for awards under the Prior Incentive Plan at the effective date of the 2017 Incentive Plan, may be granted (the “Maximum Share Limit”). Each restricted stock award and unit and performance share granted under the 2017 Incentive Plan counts as 1.35 shares against the Maximum Share Limit. Each stock option and stock appreciation right to be settled in shares of common stock granted under the 2017 Incentive Plan counts as 1.00 share against the Maximum Share Limit. Cash SARs granted under the 2017 Incentive Plan and the Cash SAR Plan do not count against the Maximum Share Limit. There have been no grants of stock appreciation rights to be settled in shares of common stock and there are no outstanding stock options. As of December 31, 2018, there were 258,785 shares of common stock available for grant under the 2017 Incentive Plan.

Restricted Stock Awards and Units

The table below summarizes restricted stock award and unit activity for the years ended December 31, 2018, 2017 and 2016:

	Restricted Stock Awards and Units		Weighted Average Grant Date Fair Value
For the Year Ended December 31, 2016
Unvested restricted stock awards and units, beginning of period	1,041,997			$44.22
Granted	887,254			$27.80
Vested	(811,136	)		$36.32
Forfeited	(6,405	)		$34.46
Unvested restricted stock awards and units, end of period	1,111,710			$36.93
For the Year Ended December 31, 2017
Unvested restricted stock awards and units, beginning of period	1,111,710			$36.93
Granted	1,020,465			$25.63
Vested	(635,965	)		$39.62
Forfeited	(13,555	)		$29.11
Unvested restricted stock awards and units, end of period	1,482,655			$28.07
For the Year Ended December 31, 2018
Unvested restricted stock awards and units, beginning of period	1,482,655			$28.07
Granted	1,458,421			$15.49
Vested	(621,399	)		$31.48
Forfeited	(53,010	)		$17.72
Unvested restricted stock awards and units, end of period	2,266,667			$19.28

Grant activity primarily consisted of restricted stock units to employees and independent contractors as part of the annual grant of long-term equity incentive awards that occurred in the first quarter of each of the years presented in the table above and vest ratably over an approximate three-year period. As of December 31, 2018, unrecognized compensation costs related to unvested

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restricted stock awards and units was $23.2 million and will be recognized over a weighted average period of 1.9 years. The aggregate fair value of restricted stock awards and units that vested during the years ended December 31, 2018, 2017 and 2016 was $10.2 million, $20.3 million and $26.3 million, respectively.

Cash SARs

The table below summarizes the Cash SAR activity for the years ended December 31, 2018, 2017 and 2016:

	Stock Appreciation Rights		Weighted Average Exercise Prices		Weighted Average Remaining Life (In years)	Aggregate Intrinsic Value (In millions)		Aggregate Intrinsic Value of Exercises (In millions)
For the Year Ended December 31, 2016
Outstanding, beginning of period	700,453			$21.86
Granted	376,260			$27.30
Exercised	(354,075	)		$23.89					$5.2
Forfeited	—		—
Expired	—		—
Outstanding, end of period	722,638			$23.69
Vested, end of period	350,840			$19.87
Vested and exercisable, end of period	350,840			$19.87
For the Year Ended December 31, 2017
Outstanding, beginning of period	722,638			$23.69
Granted	342,440			$26.94
Exercised	(219,279	)		$17.28					$2.1
Forfeited	—		—
Expired	(131,561	)		$24.19
Outstanding, end of period	714,238			$27.12
Vested, end of period	185,899			$27.30
Vested and exercisable, end of period	—			$27.30
For the Year Ended December 31, 2018
Outstanding, beginning of period	714,238			$27.12
Granted	616,686			$14.67
Exercised	—		—						$—
Forfeited	—		—
Expired	—		—
Outstanding, end of period	1,330,924			$21.35	4.3		$—
Vested, end of period	543,018			$27.18
Vested and exercisable, end of period	—			$27.18	2.5		$—

Grant activity primarily consisted of Cash SARs to certain employees and independent contractors as part of the annual grant of long-term equity incentive awards that occurred in the first quarter of each of the years presented in the table above. The Cash SARs granted during the year ended December 31, 2018 vest ratably over an approximate three year period and expire approximately seven years from the grant date. The Cash SARs granted during the years ended December 31, 2017 and 2016 vest ratably over an approximate two year period and expire approximately five years from the grant date.

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The grant date fair value of the Cash SARs, calculated using the Black-Scholes-Merton option pricing model, was $4.9 million, $4.1 million, and $3.7 million for the years ended December 31, 2018, 2017, and 2016, respectively. The following table summarizes the assumptions used and the resulting grant date fair value per Cash SAR granted during the years ended December 31, 2018, 2017, and 2016:

	Years Ended December 31,
	2018		2017		2016
Expected term (in years)	6.0		4.2		3.9
Expected volatility	54.3	%	54.3	%	45.1	%
Risk-free interest rate	2.8	%	1.8	%	1.3	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per Cash SAR	$7.89		$12.00		$9.88

The liability for Cash SARs as of December 31, 2018 and 2017 was $1.8 million and $4.4 million, respectively, all of which was classified as “Other current liabilities” in the consolidated balance sheets in the respective period. Unrecognized compensation costs related to unvested Cash SARs were $2.4 million as of December 31, 2018, and will be recognized over a weighted average period of 2.2 years.

Performance Shares

The table below summarizes performance share activity for the years ended December 31, 2018, 2017 and 2016:

	Target Performance Shares (1)		Weighted Average Grant Date Fair Value
For the Year Ended December 31, 2016
Unvested performance shares, beginning of period	112,859			$66.83
Granted	41,651			$35.71
Vested at end of performance period	—		—
Forfeited	—		—
Unvested performance shares, end of period	154,510			$58.44
For the Year Ended December 31, 2017
Unvested performance shares, beginning of period	154,510			$58.44
Granted	46,787			$35.14
Vested at end of performance period	(56,342	)		$68.15
Forfeited	—		—
Unvested performance shares, end of period	144,955			$47.14
For the Year Ended December 31, 2018
Unvested performance shares, beginning of period	144,955			$47.14
Granted	93,771			$19.09
Vested at end of performance period	(49,458	)		$65.51
Did not vest at end of performance period	(7,059	)		$65.51
Forfeited	—		—
Unvested performance shares, end of period	182,209			$27.01

(1) The number of performance shares that vest may vary from the number of target performance shares granted depending on the Company’s final TSR ranking for the approximate three-year performance period.

Grant activity primarily consisted of performance shares to certain employees and independent contractors as part of the annual grant of long-term equity incentive awards that occurred in the first quarter of each of the years presented in the table above.

For the year ended December 31, 2018, as a result of the Company’s final TSR ranking during the performance period, a multiplier of 88% was applied to the 56,517 target performance shares that were granted in 2015, resulting in the vesting of 49,458 shares and 7,059 shares that did not vest. For the year ended December 31, 2017, as a result of the Company’s final TSR ranking during the performance period, a multiplier of 164% was applied to the 56,342 target performance shares that were granted in 2014, resulting in the vesting of 92,200 shares. The Company did not have any performance shares that vested during the year ended December 31, 2016. The aggregate fair value of performance shares that vested during the years ended December 31, 2018 and 2017 was $0.8 million and $2.6 million, respectively.

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For the years ended December 31, 2018, 2017 and 2016, the grant date fair value of the performance shares, calculated using a Monte Carlo simulation, was $1.8 million, $1.6 million, and $1.5 million, respectively. The following table summarizes the assumptions used and the resulting grant date fair value per performance share granted during the years ended December 31, 2018, 2017 and 2016:

	Years Ended December 31,
	2018		2017		2016
Number of simulations	500,000		500,000		500,000
Expected term (in years)	3.0		3.0		3.0
Expected volatility	61.5	%	59.2	%	55.3	%
Risk-free interest rate	2.4	%	1.5	%	1.2	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per performance share	$19.09		$35.14		$35.71

As of December 31, 2018, unrecognized compensation costs related to unvested performance shares were $2.1 million and will be recognized over a weighted average period of 1.8 years.

Stock-Based Compensation Expense, Net

The following table sets forth the components of stock-based compensation expense, net:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Restricted stock awards and units		$18,434			$21,372			$28,196
Cash SARs	(2,571		)	(5,023		)	9,675
Performance shares	1,785			2,442			2,806
	17,648			18,791			40,677
Less: amounts capitalized to oil and gas properties	(4,124		)	(4,482		)	(4,591		)
Total stock-based compensation expense, net		$13,524			$14,309			$36,086

12. Derivative Instruments

Commodity Derivative Instruments

The Company uses commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of its forecasted sales of production and achieve a more predictable level of cash flow. Since the Company derives a significant portion of its revenues from sales of crude oil, crude oil price volatility represents the Company’s most significant commodity price risk. While the use of commodity derivative instruments limits or partially reduces the downside risk of adverse commodity price movements, such use also limits the upside from favorable commodity price movements. The Company does not enter into commodity derivative instruments for speculative purposes.

The Company’s commodity derivative instruments, which settle on a monthly basis over the term of the contract for contracted volumes, consist of over-the-counter price swaps, three-way collars, sold call options and basis swaps, each of which is described below.

Price swaps are settled based on differences between a fixed price and the settlement price of a referenced index. If the settlement price of the referenced index is below the fixed price, the Company receives the difference from the counterparty. If the referenced settlement price is above the fixed price, the Company pays the difference to the counterparty.

Three-way collars consist of a purchased put option (floor price), a sold call option (ceiling price) and a sold put option (sub-floor price) and are settled based on differences between the floor or ceiling prices and the settlement price of a referenced index or the difference between the floor price and sub-floor price. If the settlement price of the referenced index is below the sub-floor price, the Company receives the difference between the floor price and sub-floor price from the counterparty. If the settlement price of the referenced index is between the floor price and sub-floor price, the Company receives the difference between the floor price and the settlement price of the referenced index from the counterparty. If the settlement price of the referenced index is between the floor price and ceiling price, no payments are due to or from either party. If the settlement price of the referenced index is above the ceiling price, the Company pays the difference to the counterparty.

Sold call options are settled based on differences between the ceiling price and the settlement price of a referenced index. If the settlement price of the referenced index is above the ceiling price, the Company pays the difference to the counterparty. If the settlement price of the referenced index is below the ceiling price, no payments are due to or from either party. Premiums

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from the sale of call options have been used to enhance the fixed price of certain contemporaneously executed price swaps. Purchased call options executed contemporaneously with sold call options in order to increase the ceiling price of existing sold call options have been presented on a net basis in the table below.

Basis swaps are settled based on differences between a fixed price differential and the differential between the settlement prices of two referenced indexes. If the differential between the settlement prices of the two referenced indexes is greater than the fixed price differential, the Company receives the difference from the counterparty. If the differential between the settlement prices of the two referenced indexes is less than the fixed price differential, the Company pays the difference to the counterparty.

The referenced index of the Company’s price swaps, three-way collars and sold call options is U.S. New York Mercantile Exchange (“NYMEX”) West Texas Intermediate (“WTI”) for crude oil and NYMEX Henry Hub for natural gas, as applicable. The prices received by the Company for the sale of its production generally vary from these referenced index prices due to adjustments for delivery location (basis) and other factors. The referenced indexes of the Company’s basis swaps, which are used to mitigate location price risk for a portion of its production, are Argus WTI Cushing (“WTI Cushing”) and the applicable index price of the Company’s crude oil sales contracts is Argus WTI Midland (“WTI Midland”) for its Delaware Basin crude oil production and Argus Light Louisiana Sweet (“LLS”) for its Eagle Ford crude oil production.

The Company has incurred premiums on certain of its commodity derivative instruments in order to obtain a higher floor price and/or higher ceiling price. Payment of these premiums are deferred until the applicable contracts settle on a monthly basis over the term of the contract or, in some cases, during the final 12 months of the contract and are referred to as deferred premium obligations.

As of December 31, 2018, the Company had the following outstanding commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)		Fixed Price Differential ($ per Bbl)
Crude oil	1Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	1Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	1Q19	Basis Swaps	WTI Midland-WTI Cushing	5,500	—		—		—			($5.24	)
Crude oil	1Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	2Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	2Q19	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			($5.38	)
Crude oil	2Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	3Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	3Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	3Q19	Basis Swaps	WTI Midland-WTI Cushing	7,000	—		—		—			($5.56	)
Crude oil	3Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	4Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	4Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	4Q19	Basis Swaps	WTI Midland-WTI Cushing	11,000	—		—		—			($3.84	)
Crude oil	4Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2020	Basis Swaps	WTI Midland-WTI Cushing	13,000	—		—		—			($1.27	)
Crude oil	2020	Sold Call Options	NYMEX WTI	4,575	—		—			$75.98	—
Crude oil	2021	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			$0.03

F-33

Commodity	Period	Type of Contract	Index	Volumes (MMBtu per day)	Sub-Floor Price ($ per MMBtu)	Floor Price ($ per MMBtu)	Ceiling Price ($ per MMBtu)		Fixed Price  Differential ($ per MMBtu)
Natural gas	1Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	2Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	3Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	4Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	2020	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.50	—

The Company typically has numerous commodity derivative instruments outstanding with a counterparty that were executed at various dates, for various contract types, commodities and time periods often resulting in both commodity derivative asset and liability positions with that counterparty. The Company nets its commodity derivative instrument fair values executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to ISDAs, which provide for net settlement over the term of the contract and in the event of default or termination of the contract.

Counterparties to the Company’s commodity derivative instruments who are a Lender Counterparty allow the Company to satisfy any need for margin obligations associated with commodity derivative instruments where the Company is in a net liability position with the Lender Counterparty with the collateral securing the credit agreement, thus eliminating the need for independent collateral posting. Counterparties to the Company’s commodity derivative instruments who are a Non-Lender Counterparty can require commodity derivative instruments to be novated to a Lender Counterparty if the Company’s net liability position exceeds the Company’s unsecured credit limit with the Non-Lender Counterparty and therefore do not require the posting of cash collateral.

Because each Lender Counterparty has an investment grade credit rating and the Company has obtained a guaranty from each Non-Lender Counterparty’s parent company which has an investment grade credit rating, the Company believes it does not have significant credit risk and accordingly does not currently require its counterparties to post collateral to support the net asset positions of its commodity derivative instruments. Although the Company does not currently anticipate nonperformance from its counterparties, it continually monitors the credit ratings of each Lender Counterparty and each Non-Lender Counterparty’s parent company. The Company executes its derivative instruments with seventeen counterparties to minimize its credit exposure to any individual counterparty.

F-34

Contingent Consideration Arrangements

The purchase and sale agreements of the ExL Acquisition and divestitures of the Company’s assets in the Niobrara, Marcellus and Utica, included contingent consideration arrangements that require the Company to pay or entitle the Company to receive specified amounts if commodity prices exceed specified thresholds, which are summarized in the table below. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further discussion.

Contingent Consideration Arrangements	Years	Threshold (1)		Contingent Receipt (Payment) - Annual			Contingent Receipt (Payment) - Aggregate Limit
				(In thousands)
Contingent ExL Consideration	2018		$50.00		($50,000	)
	2019	50.00		(50,000		)
	2020	50.00		(50,000		)
	2021	50.00		(50,000		)		($125,000	)
Contingent Niobrara Consideration	2018		$55.00		$5,000
	2019	55.00		5,000
	2020	60.00		5,000			—
Contingent Marcellus Consideration	2018		$3.13		$3,000
	2019	3.18		3,000
	2020	3.30		3,000				$7,500
Contingent Utica Consideration	2018		$50.00		$5,000
	2019	53.00		5,000
	2020	56.00		5,000			—

(1) The price used to determine whether the specified threshold for each year has been met for the Contingent ExL Consideration, Contingent Niobrara Consideration and Contingent Utica Consideration is the average daily closing spot price per barrel of WTI crude oil as measured by the U.S. Energy Information Administration. The price used to determine whether the specified threshold for each year has been met for the Contingent Marcellus Consideration is the average monthly settlement price per MMBtu of Henry Hub natural gas for the next calendar month, as determined on the last business day preceding each calendar month as measured by the CME Group Inc.

F-35

Derivative Assets and Liabilities

The derivative instrument asset and liability fair values recorded in the consolidated balance sheets as of December 31, 2018 and December 31, 2017 are summarized below:

	December 31, 2018
	Gross Amounts Recognized			Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts Presented in the Consolidated Balance Sheets
	(In thousands)
Commodity derivative instruments		$50,406			($20,502	)		$29,904
Contingent Niobrara Consideration	5,000			—			5,000
Contingent Utica Consideration	5,000			—			5,000
Derivative assets		$60,406			($20,502	)		$39,904
Commodity derivative instruments	6,083			(4,236		)	1,847
Contingent Niobrara Consideration	2,035			—			2,035
Contingent Marcellus Consideration	1,369			—			1,369
Contingent Utica Consideration	2,501			—			2,501
Other long-term assets		$11,988			($4,236	)		$7,752
Commodity derivative instruments		($15,345	)		$10,140			($5,205	)
Deferred premium obligations	(10,362		)	10,362			—
Contingent ExL Consideration	(50,000		)	—			(50,000		)
Derivative liabilities-current		($75,707	)		$20,502			($55,205	)
Commodity derivative instruments	(10,751		)	518			(10,233		)
Deferred premium obligations	(3,718		)	3,718			—
Contingent ExL Consideration	(30,584		)	—			(30,584		)
Derivative liabilities-non current		($45,053	)		$4,236			($40,817	)

	December 31, 2017
	Gross Amounts Recognized			Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts Presented in the Consolidated Balance Sheets
	(In thousands)
Commodity derivative instruments		$4,869			($4,869	)		$—
Derivative assets		$4,869			($4,869	)		$—
Commodity derivative instruments	9,505			(9,505		)	—
Contingent Marcellus Consideration	2,205			—			2,205
Contingent Utica Consideration	7,985			—			7,985
Other long-term assets		$19,695			($9,505	)		$10,190
Commodity derivative instruments		($52,671	)		($4,450	)		($57,121	)
Deferred premium obligations	(9,319		)	9,319			—
Derivative liabilities-current		($61,990	)		$4,869			($57,121	)
Commodity derivative instruments	(24,609		)	(2,098		)	(26,707		)
Deferred premium obligations	(11,603		)	11,603			—
Contingent ExL Consideration	(85,625		)	—			(85,625		)
Derivative liabilities-non current		($121,837	)		$9,505			($112,332	)

See “Note 13. Fair Value Measurements” for additional information regarding the fair value of the Company’s derivative instruments.

F-36

(Gain) Loss on Derivatives, Net

The components of “(Gain) loss on derivatives, net” in the consolidated statements of operations for the years ended December 31, 2018, 2017, and 2016 are summarized below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
(Gain) Loss on Derivatives, Net
Crude oil		($9,726	)		$22,839			$23,609
NGL	4,439			1,322			—
Natural gas	(421		)	(15,399		)	19,584
Deferred premium obligations	1,875			18,401			5,880
Contingent ExL Consideration	(5,041		)	33,325			—
Contingent Niobrara Consideration	845			—			—
Contingent Marcellus Consideration	836			455			—
Contingent Utica Consideration	484			(1,840		)	—
(Gain) Loss on Derivatives, Net		($6,709	)		$59,103			$49,073

Cash Received (Paid) for Derivative Settlements, Net

For the years ended December 31, 2018, 2017, and 2016, there were no settlements of contingent consideration arrangements, however, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration were exceeded for the year ended December 31, 2018. See “Note 16. Subsequent Events” for further discussion.

The components of “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows for the years ended December 31, 2018, 2017, and 2016 are summarized below:

	Years Ended December 31,
	2018			2017			2016
Cash Flows from Operating Activities	(In thousands)
Cash Received (Paid) for Derivative Settlements, Net
Crude oil		($78,570	)		$9,883			$125,098
NGL	(6,378		)	—			—
Natural gas	(1,710		)	(54		)	—
Deferred premium obligations	(9,649		)	(2,056		)	(5,729		)
Cash Received (Paid) for Derivative Settlements, Net		($96,307	)		$7,773			$119,369

13. Fair Value Measurements

Accounting guidelines for measuring fair value establish a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy categorizes assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. The three levels are defined as follows:

Level 1 – Observable inputs such as quoted prices in active markets at the measurement date for identical, unrestricted assets or liabilities.

Level 2 – Other inputs that are observable directly or indirectly such as quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability.

Level 3 – Unobservable inputs for which there is little or no market data and which the Company makes its own assumptions about how market participants would price the assets and liabilities.

F-37

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables summarize the Company’s derivative instrument assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017:

	December 31, 2018
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$31,751			$—
Contingent Niobrara Consideration	—		7,035			—
Contingent Marcellus Consideration	—		1,369			—
Contingent Utica Consideration	—		7,501			—
Liabilities
Commodity derivative instruments		$—		($15,438	)		$—
Contingent ExL Consideration	—		(80,584		)	—

	December 31, 2017
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$—			$—
Contingent Niobrara Consideration	—		—			—
Contingent Marcellus Consideration	—		—			2,205
Contingent Utica Consideration	—		—			7,985
Liabilities
Commodity derivative instruments		$—		($83,828	)		$—
Contingent ExL Consideration	—		—			(85,625		)

The asset and liability fair values reported in the consolidated balance sheets are as of the balance sheet date and subsequently change as a result of changes in commodity prices, market conditions and other factors.

Commodity derivative instruments. The fair value of the Company’s commodity derivative instruments is based on a third-party industry-standard pricing model which uses contract terms and prices and assumptions and inputs that are substantially observable in active markets throughout the full term of the instruments including forward oil and gas price curves, discount rates and volatility factors, and are therefore designated as Level 2 within the valuation hierarchy. The fair values are also compared to the values provided by the counterparties for reasonableness and are adjusted for the counterparties’ credit quality for commodity derivative assets and the Company’s credit quality for commodity derivative liabilities.

Contingent consideration arrangements. The fair values of the contingent consideration arrangements were determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as forward oil and gas price curves, volatility factors, and risk adjusted discount rates, which include adjustments for the counterparties’ credit quality for contingent consideration assets and the Company’s credit quality for the contingent consideration liabilities. These inputs are substantially observable in active markets throughout the full term of the contingent consideration arrangements or can be derived from observable data and are therefore designated as Level 2 within the valuation hierarchy. The Company reviewed the valuations, including the related inputs, and analyzed changes in fair value measurements between periods.

F-38

The following tables present the reconciliation of changes in the fair values of the contingent consideration arrangements, which were designated within the valuation hierarchy as Level 2 for the year ended December 31, 2018 and Level 3 for the year ended December 31, 2017:

	Contingent Consideration Arrangements
	Assets			Liability
	(In thousands)
Balance as of January 1, 2017		$—			$—
Recognition of (acquisition) divestiture date fair value	8,805			(52,300		)
Gain (loss) on change in fair value, net(1)	1,385			(33,325		)
Transfers into (out of) Level 3	—			—
Balance as of December 31, 2017		$10,190			($85,625	)
Recognition of divestiture date fair value	7,880			—
Gain (loss) on changes in fair value, net(1)	(2,165		)	5,041
Transfers out of Level 3	(15,905		)	80,584
Balance as of December 31, 2018		$—			$—

(1) Recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations.

During 2018, the Company determined that the contingent consideration arrangements met the requirements to be designated as Level 2 in the valuation hierarchy due to the increased observability of the forward oil and gas price curves used in determining the fair value throughout the full term of the contingent consideration arrangements resulting in the transfer out of Level 3.

See “Note 12. Derivative Instruments” for additional information regarding the contingent consideration arrangements.

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The fair value measurements of assets acquired and liabilities assumed, other than contingent consideration which is discussed above, are measured as of the acquisition date by a third-party valuation specialist using a discounted cash flow model based on inputs that are not observable in the market and are therefore designated as Level 3 inputs. Significant inputs to the valuation of acquired oil and gas properties include forward oil and gas price curves, estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs, and a risk adjusted discount rate. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for additional discussion.

The fair value measurements of asset retirement obligations are measured as of the date a well is drilled or when production equipment and facilities are installed using a discounted cash flow model based on inputs that are not observable in the market and therefore are designated as Level 3 within the valuation hierarchy. Significant inputs to the fair value measurement of asset retirement obligations include estimates of the costs of plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land as well as estimates of the economic lives of the oil and gas wells and future inflation rates. See “Note 7. Asset Retirement Obligations” for additional discussion.

The fair value measurements of the Preferred Stock are measured as of the issuance date by a third-party valuation specialist using a discounted cash flow model based on inputs that are not observable in the market and therefore are designated as Level 3 inputs. Significant inputs to the valuation of the Preferred Stock include the per share cash purchase price, redemption premiums, liquidation preference, and redemption assumptions provided by the Company. See “Note 9. Preferred Stock and Common Stock Warrants” for details regarding the allocation of the net proceeds based on the relative fair values of the Preferred Stock and Warrants.

F-39

Fair Value of Other Financial Instruments

The Company’s other financial instruments consist of cash and cash equivalents, receivables, payables, and long-term debt. The carrying amounts of cash and cash equivalents, receivables, and payables approximate fair value due to the highly liquid or short-term nature of these instruments. The carrying amount of long-term debt associated with borrowings outstanding under the Company’s revolving credit facility approximates fair value as borrowings bear interest at variable rates. The following table presents the principal amounts of the Company’s senior notes and other long-term debt with the fair values measured using quoted secondary market trading prices which are designated as Level 1 within the valuation hierarchy. See “Note 6. Long-Term Debt” for additional discussion.

	December 31, 2018				December 31, 2017
	Principal Amount		Fair Value		Principal Amount		Fair Value
	(In thousands)
7.50% Senior Notes due 2020		$—		$—		$450,000		$459,518
6.25% Senior Notes due 2023	650,000		599,625		650,000		674,375
8.25% Senior Notes due 2025	250,000		244,375		250,000		274,375
Other long-term debt due 2028	—		—		4,425		4,445

14. Condensed Consolidating Financial Information

The rules of the SEC require that condensed consolidating financial information be provided for a subsidiary that has guaranteed the debt of a registrant issued in a public offering, where the guarantee is full, unconditional and joint and several and where the voting interest of the subsidiary is 100% owned by the registrant. The Company is, therefore, presenting condensed consolidating financial information on a parent company, combined guarantor subsidiaries, combined non-guarantor subsidiaries and consolidated basis and should be read in conjunction with the consolidated financial statements. The financial information may not necessarily be indicative of results of operations, cash flows, or financial position had such guarantor subsidiaries operated as independent entities.

F-40

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

(In thousands)

	December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,341,680			$114,005			$—		($3,305,316	)		$150,369
Total property and equipment, net	7,951			3,011,387			3,028		(3,842		)	3,018,524
Investment in subsidiaries	(419,159		)	—			—		419,159			—
Other long-term assets	28,124			5,906			—		(17,823		)	16,207
Total Assets		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100
Liabilities and Shareholders’ Equity
Current liabilities		$135,980			$3,491,337			$3,028		($3,308,336	)		$322,009
Long-term liabilities	1,650,589			59,120			—		(1,944		)	1,707,765
Preferred stock	174,422			—			—		—			174,422
Total shareholders’ equity	997,605			(419,159		)	—		402,458			980,904
Total Liabilities and Shareholders’ Equity		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100

	December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,441,633			$105,533			$—		($3,424,288	)		$122,878
Total property and equipment, net	5,953			2,630,707			3,028		(3,878		)	2,635,810
Investment in subsidiaries	(999,793		)	—			—		999,793			—
Other long-term assets	9,270			10,346			—		—			19,616
Total Assets		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304
Liabilities and Shareholders’ Equity
Current liabilities		$165,701			$3,631,401			$3,028		($3,427,308	)		$372,822
Long-term liabilities	1,689,466			114,978			—		15,879			1,820,323
Preferred stock	214,262			—			—		—			214,262
Total shareholders’ equity	387,634			(999,793		)	—		983,056			370,897
Total Liabilities and Shareholders’ Equity		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304

F-41

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$162			$1,065,780			$—		$—			$1,065,942
Total costs and expenses	176,406			479,973			—		(37		)	656,342
Income (loss) before income taxes	(176,244		)	585,807			—		37			409,600
Income tax expense	—			(5,173		)	—		—			(5,173		)
Equity in income of subsidiaries	580,634			—			—		(580,634		)	—
Net income		$404,390			$580,634			$—		($580,597	)		$404,427
Dividends on preferred stock	(18,161		)	—			—		—			(18,161		)
Accretion on preferred stock	(3,057		)	—			—		—			(3,057		)
Loss on redemption of preferred stock	(7,133		)	—			—		—			(7,133		)
Net income attributable to common shareholders		$376,039			$580,634			$—		($580,597	)		$376,076

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$302			$745,586			$—		$—			$745,888
Total costs and expenses	195,728			459,057			—		(37		)	654,748
Income (loss) before income taxes	(195,426		)	286,529			—		37			91,140
Income tax expense	—			(4,030		)	—		—			(4,030		)
Equity in income of subsidiaries	282,499			—			—		(282,499		)	—
Net income		$87,073			$282,499			$—		($282,462	)		$87,110
Dividends on preferred stock	(7,781		)	—			—		—			(7,781		)
Accretion on preferred stock	(862		)	—			—		—			(862		)
Loss on redemption of preferred stock	—			—			—		—			—
Net income attributable to common shareholders		$78,430			$282,499			$—		($282,462	)		$78,467

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$482			$443,112			$—		$—			$443,594
Total costs and expenses	208,054			910,522			—		492			1,119,068
Loss before income taxes	(207,572		)	(467,410		)	—		(492		)	(675,474		)
Income tax expense	—			—			—		—			—
Equity in loss of subsidiaries	(467,410		)	—			—		467,410			—
Net loss		($674,982	)		($467,410	)		$—		$466,918			($675,474	)
Dividends on preferred stock	—			—			—		—			—
Accretion on preferred stock	—			—			—		—			—
Loss on redemption of preferred stock	—			—			—		—			—
Net loss attributable to common shareholders		($674,982	)		($467,410	)		$—		$466,918			($675,474	)

F-42

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($269,318	)		$922,873			$—		$—			$653,555
Net cash provided by (used in) investing activities	126,905			(792,383		)	—		(130,490		)	(795,968		)
Net cash provided by (used in) financing activities	135,155			(130,490		)	—		130,490			135,155
Net decrease in cash and cash equivalents	(7,258		)	—			—		—			(7,258		)
Cash and cash equivalents, beginning of year	9,540			—			—		—			9,540
Cash and cash equivalents, end of year		$2,282			$—			$—		$—			$2,282

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($121,107	)		$544,088			$—		$—			$422,981
Net cash used in investing activities	(615,364		)	(1,155,340		)	—		611,252			(1,159,452		)
Net cash provided by financing activities	741,817			611,252			—		(611,252		)	741,817
Net increase in cash and cash equivalents	5,346			—			—		—			5,346
Cash and cash equivalents, beginning of year	4,194			—			—		—			4,194
Cash and cash equivalents, end of year		$9,540			$—			$—		$—			$9,540

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by (used in) operating activities		($34,773	)		$307,541			$—			$—			$272,768
Net cash used in investing activities	(312,291		)	(575,824		)	(740		)	269,023			(619,832		)
Net cash provided by financing activities	308,340			268,283			740			(269,023		)	308,340
Net decrease in cash and cash equivalents	(38,724		)	—			—			—			(38,724		)
Cash and cash equivalents, beginning of year	42,918			—			—			—			42,918
Cash and cash equivalents, end of year		$4,194			$—			$—			$—			$4,194

F-43

15. Supplemental Cash Flow Information

Supplemental cash flow disclosures and non-cash investing and financing activities are presented below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Operating activities:
Cash paid for interest, net of amounts capitalized		$59,846			$77,213			$75,231
Cash paid for income taxes	—			—			—
Investing activities:
Increase (decrease) in capital expenditure payables and accruals		($53,722	)		$102,272			($21,492	)
Supplemental non-cash investing activities:
Fair value of contingent consideration assets on date of divestiture	(7,880		)	(8,805		)	—
Fair value of contingent consideration liabilities on date of acquisition	—			52,300			—
Liabilities assumed in connection with the Sanchez Acquisition	—			—			4,880
Stock-based compensation expense capitalized to oil and gas properties	4,124			4,482			4,591
Asset retirement obligations capitalized to oil and gas properties	2,132			3,726			1,927
Supplemental non-cash financing activities:
Non-cash loss on extinguishment of debt, net	3,586			1,357			—

16.Subsequent Events (Unaudited)

Hedging

Subsequent to December 31, 2018, the Company entered into the following commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Fixed Price ($ per Bbl)		Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)
Crude oil	2020	Price Swaps	NYMEX WTI	3,000		$55.06	—		—		—
Crude oil	2020	Three-Way Collars	NYMEX WTI	6,000	—			$45.00		$55.00		$64.69

Contingent Consideration Arrangements

For the year ended December 31, 2018, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration were exceeded. As a result, in January 2019, we paid $50.0 million and received $10.0 million from settlement of these contingent consideration arrangements.

17. Supplemental Disclosures about Oil and Gas Producing Activities (Unaudited)

Costs Incurred

Costs incurred in oil and gas property acquisition, exploration and development activities are summarized below:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
Property acquisition costs
Proved properties		$47,370		$303,307		$90,661
Unproved properties	182,220		525,061		113,535
Total property acquisition costs	229,590		828,368		204,196
Exploration costs	48,570		91,098		37,508
Development costs	809,637		569,982		374,134
Total costs incurred		$1,087,797		$1,489,448		$615,838

F-44

Costs incurred exclude capitalized interest on unproved properties of $36.6 million, $28.3 million, and $17.0 million for the years ended December 31, 2018, 2017 and 2016, respectively. Included in exploration and development costs are non-cash additions related to the estimated future asset retirement obligations of the Company’s oil and gas properties of $1.9 million, $3.5 million and $1.9 million for the years ended December 31, 2018, 2017 and 2016, respectively. Non-cash additions related to the estimated future asset retirement obligations associated with the Devon Acquisition of $0.2 million, the ExL Acquisition of $0.1 million, and the Sanchez Acquisition of $2.0 million are included in acquisition costs of proved properties for the years ended December 31, 2018, 2017 and 2016, respectively. The internal cost of employee compensation and benefits, including stock-based compensation, capitalized to proved or unproved oil and gas properties of $17.0 million, $14.8 million and $10.5 million for the years ended December 31, 2018, 2017 and 2016, respectively, are included in exploration, development and unproved property acquisition costs.

Proved Oil and Gas Reserve Quantities

Proved oil and gas reserves are generally those quantities of crude oil, NGLs and natural gas, which by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible in future years from known reservoirs under existing economic conditions, operating methods and government regulations. Proved developed reserves include reserves that can be expected to be produced through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well. Proved undeveloped reserves include reserves that are expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion. Proved reserve quantities at December 31, 2018, 2017, and 2016 and the related discounted future net cash flows before income taxes are based on estimates prepared by Ryder Scott Company, L.P. Such estimates have been prepared in accordance with guidelines established by the SEC. All of the Company’s proved reserves are attributable to properties within the United States. 

F-45

The Company’s proved reserves and changes in proved reserves are as follows:

	Crude Oil (MBbls)		NGLs (MBbls)		Natural Gas (MMcf)		Total Proved Reserves (MBoe)
Proved reserves:
January 1, 2016	109,588		20,221		244,938		170,632
Extensions and discoveries	40,074		8,612		59,318		58,572
Revisions of previous estimates	(16,731	)	(3,230	)	1,481		(19,713	)
Purchases of reserves in place	4,810		122		7,282		6,145
Production	(9,423	)	(1,788	)	(25,574	)	(15,473	)
December 31, 2016	128,318		23,937		287,445		200,163
Extensions and discoveries	50,476		13,781		98,980		80,754
Revisions of previous estimates	(19,838	)	(909	)	27,774		(16,118	)
Purchases of reserves in place	21,634		8,642		94,962		46,103
Sales of reserves in place	(650	)	(526	)	(170,219	)	(29,546	)
Production	(12,566	)	(2,327	)	(28,472	)	(19,639	)
December 31, 2017	167,374		42,598		310,470		261,717
Extensions and discoveries	65,352		30,195		212,758		131,007
Revisions of previous estimates	(31,287	)	1,936		(6,006	)	(30,352	)
Purchases of reserves in place	2,205		967		7,953		4,498
Sales of reserves in place	(9,676	)	(2,872	)	(17,475	)	(15,461	)
Production	(14,232	)	(3,701	)	(24,639	)	(22,040	)
December 31, 2018	179,736		69,123		483,061		329,369
Proved developed reserves:
December 31, 2015	42,311		7,933		154,725		76,032
December 31, 2016	51,062		9,387		187,054		91,625
December 31, 2017	69,632		17,447		131,355		108,972
December 31, 2018	75,267		25,809		178,941		130,899
Proved undeveloped reserves:
December 31, 2015	67,277		12,288		90,213		94,600
December 31, 2016	77,256		14,550		100,391		108,538
December 31, 2017	97,742		25,151		179,115		152,745
December 31, 2018	104,469		43,314		304,120		198,470

Extensions and discoveries

For the year ended December 31, 2018, the Company added 12,687 MBoe of proved developed reserves and 118,320 MBoe of proved undeveloped reserves through its drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 30% and 70%, respectively, of the total extensions and discoveries.

For the year ended December 31, 2017, the Company added 6,473 MBoe of proved developed reserves and 74,281 MBoe of proved undeveloped reserves through its drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 51% and 48%, respectively, of the total extensions and discoveries.

For the year ended December 31, 2016, the Company added 6,525 MBoe of proved developed reserves and 52,047 MBoe of proved undeveloped reserves through its drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 79% and 20%, respectively, of the total extensions and discoveries.

Revisions of previous estimates

For the year ended December 31, 2018, revisions of previous estimates reduced the Company’s proved reserves by 30,352 MBoe. Included in revisions of previous estimates were:

• Positive revisions due to price of 3,764 MBoe.

F-46

• Net negative revisions of 12,363 MBoe primarily due to negative revisions of 14,907 MBoe in the Eagle Ford, partially offset by positive revisions of 2,544 MBoe in the Delaware Basin. The negative revisions in the Eagle Ford were primarily a result of completion of new wells that negatively impacted the production of adjacent existing producing wells and the associated impact to certain PUD locations, as well as a reduction in spacing and the average lateral length for certain PUD locations.

• Negative revisions of 21,753 MBoe, primarily in the Eagle Ford due to changes in the Company’s previously approved development plan which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The primary drivers of the changes in our previously approved development plan are the reallocation of capital to areas providing the greatest opportunities to increase capital efficiency and maximize project-level economics within our reduced capital expenditure plan, which includes a shift to larger-scale development projects.

For the year ended December 31, 2017, revisions of previous estimates reduced the Company’s proved reserves by 16,118 MBoe. Included in revisions of previous estimates were:

• Positive revisions due to price of 2,684 MBoe.

• Negative revisions of 4,500 MBoe primarily in the Eagle Ford due to a downward shift of the type curve for certain PUD locations partially offset by positive revisions due to well performance in Marcellus which occurred prior to the sale in November 2017.

• Negative revisions in proved undeveloped reserves of 14,302 MBoe in the Eagle Ford due to changes in the Company’s previously approved development plan which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The drivers of the changes in the Company’s previously approved development plan were the ExL Acquisition and the move to a more efficient development plan which includes drilling and completing larger pads.

For the year ended December 31, 2016, revisions of previous estimates reduced the Company’s proved reserves by 19,713 MBoe. Included in revisions of previous estimates were:

• Negative revisions due to price of 6,705 MBoe primarily due to the decline in the 12-Month Average Realized price for crude oil, of which 3,228 MBoe related to proved developed and proved undeveloped locations that were no longer economic and 3,477 MBoe related to reductions in the level of economic reserves in proved developed and proved undeveloped reserve locations due to loss of tail reserves;

• Negative revisions of 6,083 MBoe primarily in Eagle Ford as the EURs for certain PUD locations were reduced as a result of tighter spacing and shorter lateral lengths partially offset by positive revisions in Marcellus;

• Negative revisions in proved undeveloped reserves of 6,925 MBoe in the Eagle Ford due to changes in the Company’s previously approved development plan which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The drivers of the changes in the Company’s previously approved development plan were the move to a more efficient development plan which includes drilling and completing larger pads and the recent Sanchez Acquisition.

Purchases of reserves in place

For the year ended December 31, 2018, purchases of reserves in place included 4,498 MBoe of proved developed reserves associated with the Devon Acquisition.

For the year ended December 31, 2017, purchases of reserves in place included 26,009 MBoe of proved developed reserves and 20,094 MBoe of proved undeveloped reserves associated with the ExL Acquisition.

For the year ended December 31, 2016, purchases of reserves in place included 4,978 MBoe of proved developed reserves and 1,167 MBoe of proved undeveloped reserves associated with the Sanchez Acquisition.

Sales of reserves in place

For the year ended December 31, 2018, sales of reserves in place included 13,465 MBoe of proved developed reserves and 1,996 MBoe of proved undeveloped reserves associated with the Eagle Ford and Niobrara Formation divestitures.

For the year ended December 31, 2017, sales of reserves in place included 22,249 MBoe of proved developed reserves and 7,297 MBoe of proved undeveloped reserves associated with the Marcellus Shale and Utica Shale divestitures.

There were no sales of reserves in place for the year ended December 31, 2016.

F-47

Standardized Measure

The standardized measure of discounted future net cash flows relating to proved reserves is as follows:

	December 31,
	2018			2017			2016
	(In thousands)
Future cash inflows		$14,461,143			$10,109,752			$5,903,629
Future production costs	(4,572,397		)	(3,202,201		)	(2,241,928		)
Future development costs	(1,964,450		)	(1,699,909		)	(1,264,493		)
Future income taxes (1)	(1,005,837		)	(445,056		)	—
Future net cash flows	6,918,459			4,762,586			2,397,208
Less 10% annual discount to reflect timing of cash flows	(3,282,901		)	(2,297,544		)	(1,093,779		)
Standardized measure of discounted future net cash flows		$3,635,558			$2,465,042			$1,303,429

(1) Future income taxes in the calculation of the standardized measure of discounted future net cash flows were zero as of December 31, 2016, as the historical tax basis of proved oil and gas properties, net operating loss carryforwards, and future tax deductions exceeded the undiscounted future net cash flows before income taxes of the Company’s proved oil and gas reserves as of December 31, 2016.

Proved reserve estimates and future cash flows are based on the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the year. The following average realized prices were used in the calculation of proved reserves and the standardized measure of discounted future net cash flows.

	Years Ended December 31,
	2018		2017		2016
Crude oil ($/Bbl)		$63.80		$49.87		$39.60
NGLs ($/Bbl)		$26.15		$19.78		$11.66
Natural gas ($/Mcf)		$2.46		$2.96		$1.89

Future operating and development costs are computed primarily by the Company’s petroleum engineers by estimating the expenditures to be incurred in developing and producing the Company’s proved reserves at the end of the year, based on current costs and assuming continuation of existing economic conditions. Future income taxes, which include the effects of the Tax Cuts and Jobs Act for the years ended December 31, 2018 and 2017, are based on current statutory rates, adjusted for the tax basis of oil and gas properties and available applicable tax assets. A discount factor of 10% was used to reflect the timing of future net cash flows. The standardized measure of discounted future net cash flows is not intended to represent the replacement cost or fair value of the Company’s oil and gas properties. An estimate of fair value would also take into account, among other things, the recovery of reserves not presently classified as proved, anticipated future changes in prices and costs, and a discount factor more representative of the time value of money and the risks inherent in proved reserve estimates.

F-48

Changes in Standardized Measure

Changes in the standardized measure of discounted future net cash flows relating to proved reserves are summarized below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Standardized measure at beginning of year		$2,465,042			$1,303,429			$1,365,224
Revisions to reserves proved in prior years:
Net change in sales prices and production costs related to future production		$809,182			$710,773			($346,763	)
Net change in estimated future development costs	(9,627		)	(51,854		)	74,407
Net change due to revisions in quantity estimates	(250,817		)	(42,214		)	(150,245		)
Accretion of discount	263,837			130,343			136,522
Changes in production rates (timing) and other	(19,539		)	(116,056		)	(111,137		)
Total revisions to reserves proved in prior years	793,036			630,992			(397,216		)
Net change due to extensions and discoveries, net of estimated future development and production costs	1,127,748			597,502			313,201
Net change due to purchases of reserves in place	60,264			452,932			43,426
Net change due to divestitures of reserves in place	(181,308		)	(106,608		)	—
Sales of crude oil, NGLs and natural gas produced, net of production costs	(843,333		)	(566,258		)	(320,272		)
Previously estimated development costs incurred	496,600			326,383			299,066
Net change in income taxes	(282,491		)	(173,330		)	—
Net change in standardized measure of discounted future net cash flows	1,170,516			1,161,613			(61,795		)
Standardized measure at end of year		$3,635,558			$2,465,042			$1,303,429

18. Quarterly Financial Data (Unaudited)

The following is a summary of the unaudited quarterly financial data for the years ended December 31, 2018 and 2017:

Year Ended December 31, 2018	First Quarter (3)		Second Quarter (4)		Third Quarter		Fourth Quarter (5)
	(In thousands, except per share amounts)
Total revenues		$225,280		$263,973		$303,375		$273,314
Operating profit (1)		$108,992		$140,265		$165,141		$129,405
Net income		$27,492		$35,309		$81,346		$260,280
Net income attributable to common shareholders		$14,743		$30,095		$76,118		$255,120
Net income attributable to common shareholders per common share (2)
Basic		$0.18		$0.37		$0.88		$2.79
Diluted		$0.18		$0.36		$0.85		$2.75

Year Ended December 31, 2017	First Quarter		Second Quarter		Third Quarter (6)		Fourth Quarter (7)
	(In thousands, except per share amounts)
Total revenues		$151,355		$166,483		$181,279		$246,771
Operating profit (1)		$57,953		$63,147		$69,364		$113,205
Net income (loss)		$40,021		$56,306		$7,823		($17,040	)
Net income (loss) attributable to common shareholders		$40,021		$56,306		$5,574		($23,434	)
Net income (loss) attributable to common shareholders per common share (2)
Basic		$0.61		$0.86		$0.07		($0.29	)
Diluted		$0.61		$0.85		$0.07		($0.29	)

(1) Total revenues less lease operating expense, production taxes, ad valorem taxes and DD&A.

F-49

(2) The sum of quarterly net income (loss) attributable to common shareholders per common share does not agree with the total year net income (loss) attributable to common shareholders per common share as each computation is based on the weighted average of common shares outstanding during the period.

(3) First quarter of 2018 included the following:

a. $29.6 million loss on derivatives, net

b. $8.7 million loss on extinguishment of debt as a result of the redemption of $320.0 million aggregate principal amount of 7.50% Senior Notes.

b. $7.1 million loss on redemption of preferred stock as a result of the redemption of 50,000 shares of Preferred Stock.

(4) Second quarter of 2018 included the following:

a. $67.7 million loss on derivatives, net

(5) Fourth quarter of 2018 included the following:

a. $159.4 million gain on derivatives, net

(6) Third quarter of 2017 included the following:

a. $24.4 million loss on derivatives, net

(7) Fourth quarter of 2017 included the following:

a. $86.1 million loss on derivatives, net.

b. $4.2 million loss on extinguishment of debt as a result of the redemption of $150.0 million aggregate principal amount of 7.50% Senior Notes.

F-50

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

CARRIZO OIL & GAS, INC.
By:	/s/ David L. Pitts
	David L. Pitts
	Vice President and Chief Financial Officer

Date: February 28, 2019

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Name	Capacity	Date
/s/ S.P. Johnson IV	President, Chief Executive Officer and Director	February 28, 2019
S. P. Johnson IV	(Principal Executive Officer)
/s/ David L. Pitts	Vice President and Chief Financial Officer	February 28, 2019
David L. Pitts	(Principal Financial Officer)
/s/ Gregory F. Conaway	Vice President and Chief Accounting Officer	February 28, 2019
Gregory F. Conaway	(Principal Accounting Officer)
/s/ Steven A. Webster	Chairman of the Board	February 28, 2019
Steven A. Webster
/s/ Frances Aldrich Sevilla-Sacasa	Director	February 28, 2019
Frances Aldrich Sevilla-Sacasa
/s/ Thomas L. Carter, Jr.	Director	February 28, 2019
Thomas L. Carter, Jr.
/s/ Robert F. Fulton	Director	February 28, 2019
Robert F. Fulton
/s/ F. Gardner Parker	Director	February 28, 2019
F. Gardner Parker
/s/ Roger A. Ramsey	Director	February 28, 2019
Roger A. Ramsey
/s/ Frank A. Wojtek	Director	February 28, 2019
Frank A. Wojtek

S-1

EX-10.15

Exhibit 10.15

CARRIZO OIL & GAS, INC.

CHANGE IN CONTROL SEVERANCE PLAN
(As Established Effective February 14, 2019)

Plan Document and Summary Plan Description

The Board of Directors (the “Board”) of Carrizo Oil & Gas, Inc. (the “Company”) recognizes that, as is the case with many publicly held corporations, there exists the possibility of a change in control of the Company. This possibility and the uncertainty it creates may result in the loss or distraction of employees of the Company and its subsidiaries to the detriment of the Company and its stockholders.

The Board considers the avoidance of such loss and distraction to be essential to protecting and enhancing the best interest of the Company and stockholders. The Board also believes that when a change in control is perceived as imminent, or is occurring, the Board should be able to receive and rely on disinterested service from employees regarding the best interests of the Company and its stockholders without concern that employees may be distracted or concerned by the personal uncertainties and risks created by the perception of an imminent or occurring change of control. In addition, the Board believes that it is consistent with the employment practices and policies of the Company and its subsidiaries and in the best interest of the Company and its stockholders to treat fairly its employees whose employment terminates in connection with or following a change in control. Accordingly, the Board has determined that appropriate steps should be taken to assure the Company and its subsidiaries of the continued employment and attention and dedication to duty of their employees and to seek to ensure the availability of their continued service, notwithstanding the possibility, threat or occurrence of a change in control.

To fulfill the above purposes, the Board has adopted this Carrizo Oil & Gas, Inc. Change in Control Severance Plan (the “Plan”), for the benefit of all full-time employees of the Company and its subsidiaries, on the terms and conditions hereinafter stated.

The Plan, as a “severance pay arrangement” within the meaning of Section 3(2)(В)(i) of ERISA, is intended to be excepted from the definitions of “employee pension benefit plan” and “pension plan” set forth under Section 3(2) of ERISA, and is intended to meet the descriptive requirements of a plan constituting a “severance pay plan” within the meaning of regulations published by the Secretary of Labor at Title 29, Code of Federal Regulations § 2510.3-2(b).

ARTICLE I
DEFINITIONS AND INTERPRETATIONS

Section 1.01.Definitions. Capitalized terms used in the Plan shall have the following respective meanings, except as otherwise provided or as the context shall otherwise require:

1

“2017 Incentive Plan” means the 2017 Incentive Plan of Carrizo Oil & Gas, Inc., as amended and restated from time to time.

“Accrued Obligations” shall have the meaning set forth in Section 3.02(a).

“Affiliate” shall mean any company or other entity controlled by, controlling or under common control with the Company or its Successor.

“Annual Bonus” shall mean a discretionary annual bonus paid to a Participant under the Company’s annual incentive bonus plan or program based upon a percentage of the Participant’s Base Salary and the achievement of performance objectives established by the Board or the Compensation Committee of the Board each year.

“Base Salary” shall mean a Participant’s base salary or regularly scheduled wages on an annualized basis immediately prior to his or her Termination Date (or, if greater, before giving effect to any reduction not consented to by the Participant), inclusive of any amounts deferred on a pre-tax basis pursuant to Code Sections 125, 132 or 401(k), but exclusive of (i) any Annual Bonus, other bonus payments or additional payments under any Benefit Plan and (ii) all other elements of compensation including overtime, bonuses, perquisites, commissions, restricted stock awards, stock options, retirement benefits, welfare benefits, or any other payments under any remuneration plan or program.

“Benefit Plan” shall mean any “employee benefit plan” (including any employee benefit plan within the meaning of Section 3(3) of ERISA), program, arrangement or practice maintained, sponsored or provided by the Company, including those relating to compensation, bonuses, stock option, or other stock related rights or other forms of incentive or deferred compensation, paid time off benefits, insurance coverage (including any self-insured arrangements), health or medical benefits (including health savings account contributions and related benefits), disability benefits, workers’ compensation, severance benefits and post-employment or retirement benefits (including compensation, 401(k) retirement, health, medical or life insurance or other benefits).

“Board” shall mean the Board of Directors of the Company.

“Cause” shall, with respect to a Participant, have the meaning set forth in any Employment Agreement for such Participant or, if there is no such Employment Agreement or definition of “Cause” therein applicable to the Participant, “Cause” shall mean the Participant’s:

(A)    continued failure to substantially perform the duties of his or her position with a Company Entity (other than as a result of total or partial incapacity due to physical or mental illness) for a period of 30 days following written notice by a Company Entity to the Participant of such failure;

(B)    termination of employment by a Company Entity due to the Participant’s failure to perform his or her duties in good faith;

(C)    misconduct in violation of a written policy of a Company Entity;

2

(D)    gross negligence or dishonesty;

(E)    intentional acts that are detrimental or destructive to any of the Company Entities or their employees or property; or

(F)    breach of the provisions of any confidentiality, non-compete or non-solicitation agreement between the Participant and a Company Entity.

“Change in Control” shall have the meaning set forth in the 2017 Incentive Plan, except that for purposes of clauses (c) and (d) thereof, “50%” shall be substituted for “85%”.

“Change in Control Benefits” shall have the meaning provided in Section 3.01(a).

“COBRA” shall mean the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended.

“Code” shall mean the Internal Revenue Code of 1986, as amended, and the rules and regulations promulgated thereunder.

“Code Section 409A” shall mean Section 409A of the Code and the Treasury regulations and other interpretive rulings and guidance issued thereunder.

“Committee” shall mean the committee appointed by the Compensation Committee of the Board to administer the Plan.

“Company Entities” or “Company Entity” means the Company and its Affiliates, and, following a Change in Control, includes any Successor and its Affiliates

“Disability” shall have the same meaning assigned to such term in the Company’s long-term disability plan, as in effect from time to time, or if no such plan is in effect, “Disability” means “permanent and total disability” as defined in Section 22(e)(3) of the Code.

“Effective Date” shall mean February 14, 2019.

“Eligible Employee” shall mean a full-time employee of the Company or an Affiliate of the Company. As a condition to eligibility under the Plan, any employee who is party to an Employment Agreement providing for additional benefits or protections in the event of a change in control (or similar concept) of the Company must agree to amend such agreement to eliminate such benefits and/or protections in a manner acceptable to the Committee, which amendment will include such restrictive covenants as the Committee determines to be appropriate in its discretion. An individual who is not classified by the Company as an employee with compensation reportable on Form W‑2 will not be an Eligible Employee.

“Employee Benefits” shall mean benefits the Participant may be entitled to due to his or her coverage or participation in the Benefit Plans.

3

“Employer” means the Company, any Successor or an Affiliate of either, that employs a Participant immediately prior to termination of employment.

“Employment Agreement” means an agreement between an Eligible Employee and any Company Entity which governs the terms and conditions of the Eligible Employee’s employment.

“ERISA” shall mean the Employee Retirement Income Security Act of 1974, as amended, and the rules and regulations promulgated thereunder.

“Executive Participant” means a Participant designated as either Tier 1 or Tier 2 based on the schedule set forth on Exhibit A.

“Good Reason” shall mean, when used with reference to any Participant, any of the following actions or failures to act, but in each case only if it occurs while such Participant is employed by a Company Entity and then only if it is not consented to by such Participant in writing:

(A)    the failure of a Company Entity to pay or cause to be paid the Participant’s Base Salary when due;

(B)    a material reduction in the Participant’s current Base Salary or Target Bonus; or

(C)    a relocation of the Participant’s primary work location more than 40 miles from the work location on the date immediately prior to the effective date of such change; or

(D)    if the Participant’s employment is not automatically continued by virtue of the structure of the Change in Control, a failure to receive an offer of full-time permanent employment from or with a Company Entity; or

(E)    solely in the case of an Executive Participant, (1) failure to provide the Executive Participant with compensation and benefits, which in the aggregate, are at least substantially equal (in terms of benefit levels and/or reward opportunities) to those provided for under the material employee benefit plans, programs and practices in which the Participant was participating as of the date of the Change in Control including, but not limited to the failure to pay an annual cash bonus at least equal to the average of the annual cash bonus provided to the Executive Participant in respect of the three years prior to the year in which the Change in Control occurs (or, for Executive Participants not employed for the entire such three-year period, the average annual bonus for the period for which the Participant was employed), unless such annual cash bonus is calculated and paid in a manner consistent with other similarly situated executives, (2) a failure to permit the Executive Participant to participate in any or all incentive (including equity grants and other long term, short term and non-cash incentive plans), savings, retirement plans and benefit plans,

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fringe benefits, practices, policies and programs applicable generally to other similarly situated employees of the Company; or

(F)    solely in the case of an Executive Participant, material diminution, in absolute terms, in the Participant’s position, authority, duties or responsibilities including a requirement that the CEO report to a corporate officer or employee instead of reporting directly to the Board.

(G)    Solely in the case of an Executive Participant, any action or inaction that constitutes a material breach of (i) this Plan with respect to its application to the Executive Participant or (ii) any Employment Agreement with the Executive Participant.

provided, however, that (x) none of the actions described in clauses (A) through (G) above shall constitute “Good Reason” with respect to any Participant if it was an isolated and inadvertent action not taken in bad faith by the Company and if it is remedied by the Company within 30 days after receipt of written notice thereof given by such Participant (or, if the matter is not capable of remedy within 30 days, then within a reasonable period of time following such 30-day period, provided that the Company has commenced such remedy within said 30-day period), and (y) the Participant must notify the Company in writing within 90 days of the occurrence of the Good Reason event, which notice will set forth the basis for Good Reason and the Company will have 30 days after receipt of such notice (the “Determination Period”) in which to rectify such event, determine that an event constituting Good Reason does not exist, or determine that an event constituting Good Reason exists. If the Company does not take any of such actions within the Determination Period, the Participant may terminate his or her employment with the Company for Good Reason within the 30-day period following the end of the Determination Period by giving written notice to the Company, which termination will be effective on the Termination Date, or as permitted under his Employment Agreement, if applicable. If the Company determines that Good Reason does not exist, then (A) the Participant will not be entitled to rely on or assert such event as constituting Good Reason, and (B) the Participant may file a claim pursuant to Section 4.01within 30 days after the Participant’s receipt of written notice of the Company’s determination or may pursue his remedies under his Employment Agreement at any time permitted thereunder, if applicable,. Any termination of employment by the Participant that either does not constitute Good Reason or fails to meet the notice requirements set forth above shall be deemed a termination by the Participant without Good Reason.

“Incentive Plans” shall mean the 2017 Incentive Plan, the Incentive Plan of Carrizo Oil & Gas, Inc. and the Cash Settled Stock Appreciation Rights Plan of Carrizo Oil & Gas, Inc.

“Participant” shall mean an Eligible Employee who is a Participant in accordance with Section 2.01(a).

“Plan” shall mean this Carrizo Oil & Gas, Inc. Change in Control Severance Plan, as amended, supplemented or modified from time to time in accordance with its terms.

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“Prorated Performance Bonus” means an amount equal to the Target Bonus that a Participant would have been eligible to receive for the calendar year in which the Change in Control occurs, multiplied by a fraction, the numerator of which is the number of days during which the Participant was employed by a Company Entity in the calendar year of the Change in Control, and the denominator of which is 365.

“Protected Period” shall mean the 24-month period following the date of the consummation of a Change in Control for individuals described in Tiers 1, 2 and 3 of Exhibit A, and the 12-month period following the date of the consummation of a Change in Control for individuals described in Tiers 4 through 9 of Exhibit A.

“Severance Benefits” shall have the meaning provided in clauses (2), (3) and (4) of Section 3.02(c).

“Successor” shall mean a successor to all or substantially all of the business, operations or assets of the Company.

“Target Bonus” shall mean the greater of the target annual bonus to which a Participant is entitled under the Company’s annual incentive bonus plan or program: (i) on the date prior to the consummation of the Change in Control; or (ii) in the year that the Participant’s Termination Date occurs.

“Termination Date” shall mean the date on which a Participant has a “separation from service” from the Company and its Affiliates within the meaning of Code Section 409A.

“Termination Notice” shall mean a written notice from the Company to any Participant terminating the Participant’s employment or, as applicable from the Participant indicating the Participant’s termination of employment for Good Reason.

“Termination Year” shall mean the calendar year during which the Participant’s Termination Date occurs.

“Waiver and Release Agreement” means the legal document, substantially in the form attached hereto as Exhibit B, in which a Participant, in exchange for the Severance Benefits specified in Article III, releases the Company and its Affiliates from liability and damages arising from or in connection with the Participant’s termination of employment with the Employer and enters into a non-disclosure and non-solicitation agreement.

Section 1.02.Interpretation. In the Plan (а) the words “herein,” “hereof” and “hereunder” refer to the Plan as а whole and not to any particular Article, Section or other subdivision, (b) reference to any Article or Section, means such Article or Section hereof and (c) the words “including” (and with correlative meaning “include”) means including, without limiting the generality of any description preceding such term. The Article and Section headings herein are for convenience only and shall not affect the construction hereof.

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ARTICLE II
ELIGIBILITY AND BENEFITS

Section 2.01.Participant.

(a)An Eligible Employee who is employed by the Company or an Affiliate immediately prior to a Change in Control shall be a Participant in the Plan.

(b)This Plan is only for the benefit of the Participants, and no other employees, personnel, consultants, non-employee directors or independent contractors shall be eligible to participate in the Plan or to receive any rights or benefits hereunder.

Section 2.02.Eligibility for Change in Control Benefits. The following terms and conditions govern a Participant’s eligibility to receive Change in Control Benefits:

(a)A Participant will be entitled to receive Change in Control Benefits under the Plan upon the occurrence of both of the following conditions:

(1)    A Change in Control has been consummated on or after the Effective Date; and

(2)    The Participant remains an employee of a Company Entity as of the date of the consummation of the Change in Control.

Section 2.03.Eligibility for Severance Benefits. The following terms and conditions govern Participant’s eligibility to receive Severance Benefits:

(a)A Participant will be entitled to receive Severance Benefits under the Plan upon the occurrence of both of the following conditions:

(1)    A Change in Control has been consummated at any time on or after the Effective Date; and

(2)    During the Protected Period, the Participant’s employment is terminated (A) by one of the Company Entities without Cause, or (B) by the Participant for Good Reason; provided, however, that a termination by a Company Entity that is coupled with an offer of employment from another Company Entity, such as a Successor, will only be considered a qualifying termination that entitles such Participant to receive Severance Benefits if the Participant does not accept the offer of employment for Good Reason (judged in terms of the new offer as compared to the Participant’s existing employment arrangement); provided, further, that to the extent such an offer of employment is from a Successor, the Successor shall have sole responsibility and liability with respect to the Severance Benefits for such Participant. For the avoidance of doubt, if a Participant, in connection with a Change in Control, receives an offer of employment from another Company Entity, such as

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a Successor, and does not accept such offer other than for Good Reason (judged in terms of the new offer as compared to the Participant’s existing employment arrangement), such Participant shall not be eligible to receive Severance Benefits under the Plan.

(b)For the avoidance of doubt, notwithstanding anything in this Plan to the contrary, a Participant shall be eligible to receive the Change in Control Benefits and the Severance Benefits in connection with the consummation of a single Change in Control if such Participant satisfies the terms and conditions that are applicable to such Change in Control Benefits and Severance Benefits.

(c)The Company or another Company Entity, in its sole discretion, may make decisions regarding the staffing needs and employment levels of the Company Entities as part of its business function and in anticipation of or following a Change in Control. Actions taken by the Company or any Company Entity in making or implementing these business decisions regarding staffing, reassignment and job elimination will not be construed as actions of the Plan Administrator acting in its capacity as fiduciary under the Plan. Notwithstanding anything herein to the contrary, in the event that an individual’s employment is terminated due to death or Disability, or by any Company Entity for any reason other than Cause, in each case (i) after the date that a definitive agreement is executed by the Company that, if consummated, would result in a Change in Control, and (ii) before the date that the transactions contemplated by such definitive agreement are either consummated or abandoned, then upon the occurrence of the Change in Control, such an individual shall be entitled to receive the Severance Benefits, reduced by the amount of any payments previously made by the Company or an Company Entity in connection with such individual’s termination of employment, payable within 30 days following such Change in Control.

ARTICLE III
SEVERANCE AND RELATED TERMINATION BENEFITS

Section 3.01.Change in Control Benefits. Subject to the terms and conditions of the Plan, the Plan Administrator will provide the following benefits on a Change in Control (the “Change in Control Benefits”) to a Participant who is entitled to receive such Change in Control Benefits pursuant to Section 2.02:

(a)The accelerated vesting of all outstanding awards granted under any of the Incentive Plans, which will occur immediately prior to the Change in Control and with any applicable performance conditions deemed satisfied as of the date of the consummation of the Change in Control and with payout quantity determined at the greater of (i) actual performance as of the date of the Change in Control (if such performance is determinable, and as determined by the Board immediately prior to the Change in Control); or (ii) target performance; and for any awards that include an exercise period (such as an option or stock appreciation right), the Participant shall have the full maximum original term of the award in which to exercise the award, regardless of continued employment or the terms of any existing award agreement providing for any earlier termination of said award.

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Section 3.02.Severance Benefits. No benefits are payable under this Section 3.02 unless a Participant’s employment with the Company is terminated during the Protected Period.

(a)Voluntary Termination by Participant. In the event that a Participant’s employment is terminated by the Participant during the Protected Period, then the Participant shall be paid, within 60 days following the Participant’s Termination Date, or such lesser period if required by applicable law, the following (with the benefits set forth in (1) through (4) collectively referred to as the “Accrued Obligations”):

(1) the Base Salary through the Termination Date, to the extent not already paid;

(2) any Annual Bonus earned for any previously completed fiscal year preceding the fiscal year during which the Participant’s Termination Date occurs, but unpaid as of the Termination Date subject to execution of a Waiver and Release as set forth in Section 3.03 below;

(3) payment of any accrued but unused paid time off; and

(4) reimbursement for any unreimbursed business expenses properly incurred by the Participant, in accordance with the Company’s applicable policy, prior to the Termination Date.

Following the Participant’s termination of employment by the Participant during the Protected Period, except as set forth in this Section 3.02(a), the Participant shall have no further rights to any compensation or any other benefits in the nature of severance or termination pay or in connection with the termination of his or her employment.

(b)For Cause. In the event that a Participant’s employment is terminated during the Protected Period by the Company for Cause, then the Participant shall be paid, within 30 days following the Participant’s Termination Date, the following:

(1) the Base Salary through the Termination Date, to the extent not already paid; and

(2) reimbursement for any unreimbursed business expenses properly incurred by the Participant, in accordance with the Company’s applicable policy, prior to the Termination Date.

Following the Participant’s termination of employment by the Company for Cause during the Protected Period, except as set forth in this Section 3.02(b), the Participant shall have no further rights to any compensation or any other benefits in the nature of severance or termination pay or in connection with the termination of his or her employment.

(c)Without Cause or for Good Reason. In the event that a Participant’s employment is terminated during the Protected Period (i) by the Company without Cause (including by reason of

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Disability or death) or (ii) by the Participant for Good Reason, then, subject to the provisions of Section 3.03, the following benefits shall be paid to the Participant:

(1) the Accrued Obligations (at the time set forth in Section 3.02(a));

(2) within 60 days following the Participant’s Termination Date, a lump sum cash payment equal to (i) the multiple set forth on Exhibit A multiplied by (A) the sum of the Participant’s (x) Base Salary and (y) Target Bonus for those Participants identified or referenced on Exhibit A as included in Tiers 1, 2 and 3, or (B) only Base Salary for those Participants identified or referenced on Exhibit A as included in Tiers 4 through 9, plus (ii) the Prorated Performance Bonus;

(3) full vesting of any unvested equity-based incentive awards under any equity-based incentive plan of the Company and with any applicable performance conditions deemed satisfied as of the Termination Date and with payout quantity determined at the greater of (i) actual (if determinable) performance as of the Termination Date; or (ii) target performance; and for any awards that include an exercise period (such as an option or stock appreciation right), the Participant shall have the full maximum original term of the award in which to exercise the award, regardless of continued employment or the terms of any existing award agreement providing for any earlier termination of said award;

(4) if the Participant elects continued coverage under COBRA for the Participant and his or her eligible dependents following the Participant’s Termination Date, as described in Section 3.02(f) below, then the Company, or its Successor shall during the first 18 months of such COBRA coverage, pay all premium costs to maintain full medical, dental, vision and other COBRA eligible costs for such Participant and applicable to similarly-situated active employees (such as contributions to a health savings account) (“Continued Health Benefits”); provided, however, in any case such benefits shall cease if the Participant ceases to be eligible for COBRA or becomes entitled to medical benefits from a new employer as provided in Section 3.04(a).

Following the Participant’s termination of employment during the Protected Period by the Company without Cause or by the Participant for Good Reason, except as set forth in this Section 3.02(c), the Participant shall have no further rights to any compensation or any other benefits in the nature of severance or termination pay or in connection with the termination of his or her employment.

A Participant receiving the benefits provided in clauses (2) , (3) and (4) of this Section 3.02(c) (the “Severance Benefits”) shall not be considered an Employee of the Company or any of its Affiliates for any purpose after the Participant’s Termination Date, nor shall any Severance Benefits be considered for purposes of computing benefits under or making contributions to any

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Benefit Plan maintained by the Company or any of its Affiliates (including, but not limited to, the Company’s or an Affiliate’s qualified 401(k) or pension plan).

(d)Vested Employee Benefits. Following a Participant’s termination of employment under Section 3.02(a), (b), or (c), he or she shall be entitled to such vested Employee Benefits, if any, as to which the Participant may be entitled pursuant to the terms of the applicable Benefit Plans then in effect.

(e)Treatment of Continued Health Benefits. Any continued medical, dental or vision benefits provided to a Participant and his or her dependents pursuant to Section 3.02(c) are provided concurrent with any rights the Participant and such dependents may have to continue such coverages under COBRA. The provisions of this Section 3.02 will not prohibit the Company from changing the terms of such Continued Health Benefits provided that any such changes apply to all similarly situated employees of the Company and its Affiliates (e.g., the Company may switch insurance carriers or preferred provider organizations). If applicable, the premium cost to the Company of providing any Continued Health Benefits which are medical, dental or vision benefits on a self-insured basis, will be timely reported to the Participant as taxable income. The foregoing notwithstanding, if the Company cannot provide a Participant or his or her dependents with the opportunity to participate in the benefits described in Section 3.02(c), for any reason, including because providing such benefits would potentially violate applicable law (including sanctions imposed pursuant to section 2716 of the Patient Protection and Affordable Care Act), then the Company shall pay to the Participant a single sum cash payment, payable within 60 days following the date the Company cannot provide such benefits, in an amount equal to the fair market value of the replacement benefits, as reasonably determined by the Company.

(f)COBRA. As of the end of the month following the Participant’s Termination Date, the Participant and his or her dependents shall be entitled to continued coverage under COBRA. Following the end of the Continued Health Benefits pursuant to Section 3.02(c), the Participant shall pay the full COBRA premium for the remainder of the COBRA period, if applicable.

Section 3.03.Waiver and Release Condition to Receipt of Severance Benefits. As a condition to receipt of any unpaid bonus for a prior completed year under Section 3.01(a)(2) and the Severance Benefits under Section 3.01(c) the Participant must timely execute and not revoke the Waiver and Release Agreement with the Company and its Affiliates. The Company will provide a Participant with a Waiver and Release Agreement on or before the Participant’s Termination Date. The Participant must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Participant, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). A Participant may not determine the calendar year of payment of taxable Severance Benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. A Participant’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Participant’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the Severance Benefits payable to the Participant under the terms of the

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Plan (but not the Accrued Obligations (except as set forth in the first sentence hereof) and any vested Employee Benefits described under Section 3.02(d)).

Section 3.04.Limitation of Benefits.

(a)Anything in the Plan to the contrary notwithstanding, the Company’s obligation to provide the Continued Health Benefits shall cease if and when the Participant becomes employed by a third party that provides such Participant with substantially comparable health and welfare benefits, subject to the Participant’s right to elect to continue coverage under COBRA.

(b)Any amounts payable under the Plan shall be in lieu of and not in addition to any other severance or termination payment under any other plan or agreement with the Company. As a condition to receipt of any payment under the Plan, the Participant shall waive any entitlement to any other severance or termination payment by the Company, including any severance or termination payment set forth in an Employment Agreement. Notwithstanding the foregoing, nothing in this Section 3.04(b) shall abridge the Participant’s rights with respect to vested benefits under any Benefit Plan, and in all events the Company retains the discretion to pay additional severance benefits outside the terms of this Plan in its discretion.

Section 3.05.Certain Excise Taxes. Notwithstanding anything to the contrary in this Agreement, if the Participant is a “disqualified individual” (as defined in Code Section 280G(c)), and the payments and benefits provided for in this Plan, together with any other payments and benefits which the Participant has the right to receive from the Company or any of its Affiliates, would constitute a “parachute payment” (as defined in Code Section 280G(b)(2)), then the payments and benefits provided for in this Plan shall be either (a) reduced (but not below zero) so that the present value of such total amounts and benefits received by the Participant from the Company and its Affiliates will be one dollar ($1.00) less than three (3) times the Participant’s “base amount”(as defined in Code Section 280G(b)(3)) and so that no portion of such amounts and benefits received by the Participant shall be subject to the excise tax imposed by Code Section 4999 or (b) paid in full, whichever produces the better net after tax position to the Participant (taking into account any applicable excise tax under Code Section 4999 and any other applicable taxes). The reduction of payments and benefits hereunder, if applicable, shall be made by reducing, first, payments or benefits to be paid in cash hereunder in the order in which such payment or benefit would be paid or provided (beginning with such payment or benefit that would be made last in time and continuing, to the extent necessary, through to such payment or benefit that would be made first in time) and, then, reducing any benefit to be provided in kind hereunder in a similar order. The determination as to whether any such reduction in the amount of the payments and benefits provided hereunder is necessary shall be made by the Company in good faith. If a reduced payment or benefit is made or provided and through error or otherwise that payment or benefit, when aggregated with other payments and benefits from the Company (or its Affiliates) used in determining if a parachute payment exists, exceeds one dollar ($1.00) less than three (3) times the Participant’s base amount, then the Participant shall immediately repay such excess to the Company upon notification that an overpayment has been made. Nothing in this Section 3.05 shall require the Company (or any Affiliate) to be responsible for, or have any liability or obligation with respect to, the Participant’s excise tax liabilities under Code Section 4999.

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Section 3.06.Plan Unfunded; Participant’s Rights Unsecured. The Company shall not be required to establish any special or separate fund or make any other segregation of funds or assets to assure the payment of any benefit hereunder. The right of any Participant to receive the benefits provided for herein shall be an unsecured obligation against the general assets of the Company.

ARTICLE IV
CLAIMS PROCEDURE

Section 4.01.Claims Procedure.

(a)It shall not be necessary for a Participant or beneficiary who has become entitled to receive а benefit hereunder to file a claim for such benefit with any person as a condition precedent to receiving a distribution of such benefit. However, any Participant or beneficiary who believes that he or she has become entitled to a benefit hereunder and who has not received, or commenced receiving, a distribution of such benefit, or who believes that he or she is entitled to a benefit hereunder in excess of the benefit which he or she has received, or commenced receiving, may file a written claim for such benefit with the Vice President of Human Resources of the Company (or such other person designated by the Committee) (“Claims Administrator”) at any time on or prior to the end of the fiscal year next following the fiscal year in which he or she allegedly became entitled to receive а distribution of such benefit. Such written claim shall set forth the Participant’s or beneficiary’s name and address and a statement of the facts and a reference to the pertinent provisions of the Plan upon which such claim is based. The Claims Administrator shall, within 90 days after such written claim is filed, provide the claimant with written notice of its decision with respect to such claim. If such claim is denied in whole or in part, the Claims Administrator shall, in such written notice to the claimant, set forth in а manner calculated to be understood by the claimant the specific reason or reasons for denial; specific references to pertinent provisions of the Plan upon which the denial is based; a description of any additional material or information necessary for the claimant to perfect his or her claim and an explanation of why such material or information is necessary; and an explanation of the provisions for review of claims set forth in Section 4.01(b) below.

(b)А Participant or beneficiary who has filed a written claim for benefits with the Claims Administrator which has been denied may appeal such denial to the Committee and receive a full and fair review of his or her claim by filing with the Committee a written application for review at any time within 60 days after receipt from the Committee of the written notice of denial of his or her claim provided for in Section 4.01(a) above. А Participant or beneficiary who submits a timely written application for review shall be entitled to review any and all documents pertinent to his or her claim and may submit issues and comments to the Committee in writing. Not later than 60 days after receipt of a written application for review, the Committee shall give the claimant written notice of its decision on review, which written notice shall set forth in a manner calculated to be understood by the claimant specific reasons for its decision and specific references to the pertinent provisions of the Plan upon which the decision is based.

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(c)Any act permitted or required to be taken by a Participant or beneficiary under this Section 4.01 may be taken for and on behalf of such Participant or beneficiary by such Participant’s or beneficiary’s duly authorized representative. Any claim, notice, application or other writing permitted or required to be filed with or given to a party by this Article shall be deemed to have been filed or given when deposited in the U.S. mail, postage prepaid, and properly addressed to the party to whom it is to be given or with whom it is to be filed. Any such claim, notice, application, or other writing deemed filed or given pursuant to the preceding sentence shall in the absence of clear and convincing evidence to the contrary, be deemed to have been received on the fifth (5th) business day following the date upon which it was filed or given. Any such notice, application, or other writing directed to a Participant or beneficiary shall be deemed properly addressed if directed to the address set forth in the written claim filed by such Participant or beneficiary.

(d)In addition to the rights granted to all Participants under this Section 4.01, a Participant with an Employment Agreement that contains dispute resolution mechanisms may avail himself of his rights under such Employment Agreement in lieu of the procedures and remedies set forth herein as if such Change in Control and Severance Benefits were payable thereunder. Notwithstanding any such election to pursue remedies under any applicable Employment Agreement, a Participant shall not be deemed to have waived, or elected not to pursue, the rights and remedies described herein but may pursue them in addition to any rights, remedies and claims that such Participant may make under this Section 4.01.

ARTICLE V
MISCELLANEOUS PROVISIONS

Section 5.01.Cumulative Benefits. Except as provided in Section 3.04(b), the rights and benefits provided to any Participant under the Plan are in addition to and shall not be a replacement of, all of the other rights and benefits provided to such Participant under any Benefit Plan or any agreement between such Participant and the Company, including any Employment Agreement, if applicable.

Section 5.02.Code Section 409A.

(a)It is intended that the payments and benefits provided under the Plan shall be exempt from or comply with the application of the requirements of Code Section 409A. This Plan shall be construed, administered and governed in a manner that affects such intent. Specifically, any taxable benefits or payments provided under the Plan are intended to be separate payments that qualify for the “short-term deferral” exception to Code Section 409A to the maximum extent possible, and to the extent they do not so qualify, are intended to qualify for the separation pay exceptions to Code Section 409A, to the maximum extent possible. To the extent that none of these exceptions (or any other available exception) applies, then notwithstanding anything contained herein to the contrary, and to the extent required to comply with Code Section 409A, if a Participant is a “specified employee,” as determined by the Company, as of his or her Termination Date, then all amounts due under the Plan that constitute a “deferral of compensation” within the meaning of Code Section 409A, that are provided as a result of a “separation from service” within the meaning of Code

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Section 409A, and that would otherwise be paid or provided during the first six months following the Termination Date, shall be accumulated through and paid or provided on the first business day that is more than six months after the date of the Termination Date (or, if the Participant dies during such six -month period, within 90 days after the Participant’s death).

(b)With regard to any provision herein that provides for reimbursement of costs and expenses or in-kind benefits, except as permitted by Code Section 409A: (i) the right to reimbursement or in-kind benefits shall not be subject to liquidation or exchange for another benefit; (ii) the amount of expenses eligible for reimbursement, or in-kind benefits, provided during any calendar year shall not affect the expenses eligible for reimbursement, or in-kind benefits to be provided, in any other calendar year; and (iii) such payments shall be made on or before the last day of the Participant’s calendar year following the calendar year in which the expense occurred, or such earlier date as required hereunder.

(c)The payments and benefits provided under the Plan may not be deferred, accelerated, extended, paid out or modified in a manner that would result in the imposition of an additional tax under Code Section 409A upon the Participants. Although the Company will use its best efforts to avoid the imposition of taxation, interest and penalties under Section 409A of the Code, the tax treatment of the benefits provided under the Plan is not warranted or guaranteed. Neither the Company, its Affiliates nor their respective directors, officers, employees or advisers shall be held liable for any taxes, interest, penalties or other monetary amounts owed by a Participant (or any other individual claiming a benefit through the Participant) as a result of the Plan.

Section 5.03.No Mitigation. No Participant shall be required to mitigate the amount of any payment provided for in the Plan by seeking or accepting other employment following a termination of his or her employment with the Company or otherwise. Except as otherwise provided in Sections 3.02(c)(4) and 3.04, the amount of any payment provided for in the Plan shall not be reduced by any compensation or benefit earned by a Participant as the result of employment by another employer or by retirement benefits. The Company’s obligations to make payments to any Participant required under the Plan shall not be affected by any set off, counterclaim, recoupment, defense or other claim, right or action that the Company may have against such Participant.

Section 5.04.Amendment or Termination. The Compensation Committee of the Board may amend (in whole or in part) or terminate the Plan at any time; provided, however, that the Plan cannot be amended or terminated during the Protected Period. Notwithstanding the foregoing, no termination shall reduce or terminate any Participant’s right to receive, or continue to receive, any payments and benefits that became payable in respect of a termination of employment that occurred prior to the date of such termination of the Plan.

Section 5.05.Enforceability. The failure of the Participants or the Company to insist upon strict adherence to any term of the Plan on any occasion shall not be considered а waiver of such party’s rights or deprive such party of the right thereafter to insist upon strict adherence to that term or any other term of the Plan.

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Section 5.06.Administration.

(a)The Committee shall have full and final authority, subject to the express provisions of the Plan, with respect to designation of the Participants and administration of the Plan, including but not limited to, the authority to construe and interpret any provisions of the Plan and to take all other actions deemed necessary or advisable for the proper administration of the Plan, and such decisions shall be binding on all parties.

(b)The Company shall indemnify and hold harmless each member of the Committee and any other employee of the Company that acts at the direction of the Committee against any and all expenses and liabilities arising out of his or her administrative functions or fiduciary responsibilities, including any expenses and liabilities that are caused by or result from an act or omission constituting the negligence of such member or employee in the performance of such functions or responsibilities, but excluding expenses and liabilities that are caused by or result from such member’s or employee’s own gross negligence or willful cause. Expenses against which such member or employee shall be indemnified hereunder shall include, without limitation, the amounts of any settlement or judgment, costs, counsel fees, and related charges reasonably incurred in connection with a claim asserted or a proceeding brought or settlement thereof.

Section 5.07.Consolidations, Mergers, Etc. The Company shall require any Successor to absolutely and unconditionally assume and agree to perform the obligations set forth in the Plan in the same manner and to the same extent that the Company would be required to perform hereunder if no such succession had taken place. As used in this Plan, the “Company” shall mean the Company as hereinbefore defined and any Successor which executes an assumption of this Plan as contemplated by this Section 5.07 or which otherwise becomes bound by all the terms and provisions of this Plan by operation of law.

Section 5.08.Successors and Assigns. This Plan shall be binding upon and inure to the benefit of the Company and its Successors and assigns. This Plan and all rights of each Participant shall inure to the benefit of and be enforceable by such Participant and his or her personal or legal representatives, executors, administrators, heirs and permitted assigns. If any Participant should die while any amounts are due and payable to such Participant hereunder, all such amounts, unless otherwise provided herein, shall be paid in accordance with the terms of the Plan to such Participant’s devisees, legatees or other designees or, if there be no such devisees, legatees or other designees, to the legal representative of such Participant’s estate. No payments, benefits or rights arising under the Plan may be assigned or pledged by any Participant, except under the laws of descent and distribution.

Section 5.09.Notices. All notices and other communications provided for in the Plan shall be in writing and shall be sent, delivered or mailed, addressed as follows: (a) if to the Company, at the Company’s principal office address or such other address as the Company may have designated by written notice for purposes hereof, directed to the attention of the General Counsel, and (b) if to any Participant, at his or her residence address on the records of the Company or to such other address as he or she may have designated to the Company in writing for purposes hereof. Each such notice or other communication shall be deemed to have been duly given or mailed by United States

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certified or registered mail, return receipt requested, postage prepaid, except that any change of notice address shall be effective only upon receipt.

Section 5.10.Tax Withholding. The Company shall have the right to deduct from any payment hereunder all taxes (federal, state or other) which it is required to withhold therefrom.

Section 5.11.No Employment Rights Conferred. This Plan shall not be deemed to create a contract of employment between any Participant and the Company and/or its Affiliates. Nothing contained in the Plan shall (a) confer upon any Participant any right with respect to continuation of employment with the Company or (b) subject to the rights and benefits of any Participant hereunder, interfere in any way with the right of the Company to terminate such Participant’s employment at any time.

Section 5.12.Entire Plan. This Plan contains the entire understanding of the Participants and the Company with respect to severance arrangements maintained on behalf of the Participants by the Company. There are no restrictions, agreements, promises, warranties, covenants or undertakings between the Participants and the Company with respect to the subject matter herein other than those expressly set forth herein.

Section 5.13.Prior Agreements. This Plan supersedes all prior agreements, programs, plans and understandings (including all written and verbal agreements and understandings) between each Participant and the Company regarding the terms and conditions of each Participant’s employment and severance arrangements.

Section 5.14.Severability. If any provision of the Plan is, becomes or is deemed to be invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions of the Plan shall not be affected thereby.

Section 5.15.Governing Law. This Plan shall be governed by and construed in accordance with the laws of the State of Texas, without giving effect to its conflict of laws rules, and applicable federal law.

ARTICLE VI

ERISA RIGHTS

Participants in this Plan are entitled to certain rights and protections under ERISA. ERISA provides that all plan Participants are entitled to: examine, without charge, at the Plan Administrator’s office and at other specified locations (such as worksites), all documents governing the Plan, including insurance contracts, if any and the latest annual report (Form 5500 Series); and obtain copies of documents governing the operation of the Plan, including insurance contracts, if any, and the latest annual report (Form 5500 Series) and updated summary plan descriptions upon written request to the Plan Administrator. The Plan Administrator may make a reasonable charge for the copies. A Participant is also entitled to receive a summary of the Plan’s annual financial

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report. The Plan Administrator is required by law to furnish each Participant with a copy of this summary annual report.

In addition to creating rights for plan Participants, ERISA imposes duties upon the people who are responsible for the operation of the Plan. The people who operate the Plan, called “fiduciaries” of the Plan, have a duty to do so prudently and in the interest of the plan Participants and beneficiaries. No one, including the Employer or any other person, may fire a Participant or otherwise discriminate against a Participant in any way to prevent the Participant from obtaining a benefit or exercising the Participant’s rights under ERISA.

If a Participant’s claim for a benefit is denied in whole or in part, the Participant has a right to know why this was done, to obtain copies of documents relating to the decision without charge and to appeal the denial, all under certain time schedules. Under ERISA, there are steps the Participant can take to enforce these rights. For instance, if the Participant requests materials from the Plan and does not receive them within 30 days, the Participant may file suit in a federal court. In such a case, the court may require the Plan Administrator to provide the materials and pay the Participant up to $110 a day until the Participant receives them, unless the materials were not sent because of reasons beyond the control of the Plan Administrator. If the Participant has a claim for benefits which is denied or ignored, in whole or in part, the Participant may file suit in a state or federal court. In addition, if the Participant disagrees with the Plan’s decision, or lack thereof, concerning the qualified status of a domestic relations order, the Participant may file suit in federal court after exhausting all of the Plan’s claims and appeal procedures. If it should happen that Plan fiduciaries misuse the Plan’s money, or if a Participant is discriminated against for asserting his or her rights, the Participant may seek assistance from the U.S. Department of Labor, or the Participant may file suit in a federal court. The court will decide who should pay court costs and legal fees. If the Participant is successful, the court may order the person the Participant sued to pay these costs and fees. However, if the Participant loses, the court may order the Participant to pay the costs and fees; for example, if it finds the Participant’s claim is frivolous.

If a Participant has any questions about the Plan, the Participant should call or write the Plan Administrator. If the Participant has any questions about this statement or about a Participant’s rights under ERISA, or if a Participant needs assistance in obtaining documents from the Plan Administrator, a Participant should contact the nearest office of the Employee Benefits Security Administration, U.S. Department of Labor listed in telephone directory or the Division of Technical Assistance and Inquiries, Employee Benefits Security Administration, U.S. Department of Labor, 200 Constitution Avenue N.W., Washington, D.C. 20210. A Participant may also obtain certain publications about rights and responsibilities under ERISA by calling the publications hotline of the Employee Benefits Security Administration.

ARTICLE VII
GENERAL INFORMATION ABOUT THE PLAN

Section 7.01.Plan Name. The name of the Plan is the Carrizo Oil & Gas, Inc. Change in Control Severance Plan.

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Section 7.02.Plan Sponsor. The Plan sponsor is:

Carrizo Oil & Gas, Inc.

Attn: Laura Kinningham, Vice President of Human Resources

500 Dallas St., Suite 2300

Houston, TX 77002

(713) 328-1000

Section 7.03.Employer Identification Number of Plan Sponsor. 76-0415919.

Section 7.04.ERISA Plan Number. 502.

Section 7.05.Type of Plan. The Plan is an ERISA severance pay arrangement providing for the payment of severance benefits if an Eligible Employee becomes a Participant and experiences a termination of employment entitling such Participant to severance benefits under the Plan.

Section 7.06.Plan Administration: The Plan is administered by the committee appointed the Compensation Committee of the Board:

Carrizo Oil & Gas, Inc.

Plan Administrator for Carrizo Oil & Gas, Inc.

Change in Control Severance Plan

Attn: Laura Kinningham, Vice President of Human Resources

500 Dallas St., Suite 2300

Houston, TX 77002

713-328-1000

The Plan Administrator is responsible for the operation and administration of the Plan. The Plan Administrator is authorized to construe and interpret the Plan, and its decisions shall be final and binding. The Plan Administrator shall make all reports and disclosures required by law.

Section 7.07.Agent for Service of Legal Process. The Plan Administrator is the agent for service of legal process on the Plan.

Section 7.08.Effective Date of the Plan. The Plan is effective as of the Effective Date. The Company reserves the right to change or terminate the Plan at any time for any reason, in whole or in part, subject to the limitations set forth in Section 5.04.

Section 7.09.Plan Year. Plan financial records are kept on a calendar year basis. December 31 is the end of the year for the purpose of maintaining financial records.

Section 7.10.Contributions; Source of Benefits. Payments under the Plan will be made from the general assets of the Company. No employee contributions are made under the Plan.

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IN WITNESS WHEREOF, the Company has caused these presents to be executed by its duly authorized officer, in a number of copies, all of which shall constitute one and the same instrument, which may be sufficiently evidenced by any executed copy hereof, this 14th day of February 2019, effective as of the Effective Date.

CARRIZO OIL & GAS, INC.

By: /s/ David L. Pitts    

David L. Pitts,    

Vice President and Chief Financial Officer    

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Carrizo Oil & Gas, Inc. Change in Control Severance Plan

Exhibit A: Schedule of Severance Multipliers

Tier	Applicable Severance Multiplier	Eligible Participants
Tier 1	3.0	President and CEO, and Vice President and COO
Tier 2	2.5	Current Executive Employment Agreement
Tier 3	1.5	Employees who are parties to an Employment Agreement with the Company and who are not covered in Tiers 1 or 2
Tier 4	1.5	Employees in certain pay classifications designated by the Plan Administrator, and with 15 years or more of vesting service with the Company on their Termination Date
Tier 5	1.25	Employees in certain pay classifications designated by the Plan Administrator, and with less than 15 years of vesting service with the Company, but with 10 years or more of vesting service with the Company on their Termination Date
Tier 6	1.0	Employees in certain pay classifications designated by the Plan Administrator, but with less than 10 years of vesting service with the Company on their Termination Date

- Exhibit A, Page 1 -

Tier	Applicable Severance Multiplier	Eligible Participants
Tier 7	1.0	Employees of the Company that are not otherwise designated in another Tier and with 15 years or more of vesting Service with the Company on their Termination Date
Tier 8	.75	Employees of the Company not otherwise designated in another Tier, and with less than 15 years of vesting service with the Company, but with 10 years or more of vesting service with the Company on their Termination Date
Tier 9	.5	Employees of the Company not otherwise designated in another Tier, but with less than 10 years of vesting service with the Company on their Termination Date

Any Participant not identified in Tiers 1, 2 or 3 by the description above will be designated as a Tier 7, 8 or 9 Participant in the Plan based upon his years of vesting service with the Company as of the Termination Date of such Participant unless such Participant receives a written notice from the Plan Administrator designating their participation in one of Tiers 4, 5 or 6 based upon the Termination Date for such Participant and the pay classification in which the Participant is a member.

- Exhibit A, Page 2 -

Carrizo Oil & Gas, Inc. Change in Control Severance Plan

Exhibit B: Form of Waiver and Release

In consideration of, and as a condition precedent to payment of the Severance Benefits (as defined in the Severance Plan) or other amounts (the “Severance”) to _____________ (“Employee”) pursuant to the Change in Control Severance Plan dated effective February 14, 2019 (the “Severance Plan”) of Carrizo Oil & Gas, Inc., a Texas Corporation (the “Company”), Employee is offered the Severance partially in exchange for a general waiver and release of claims (this “Waiver and Release”) as provided in Section 3.03 of the Severance Plan. Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation;

- Exhibit B, Page 1 -

invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Severance Plan, pursuant to and in accordance with the terms of the Severance Plan, or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) claims that relate to events that arise after the execution of this Waiver and Release, or (ii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Severance Plan to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Severance Plan (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further

- Exhibit B, Page 2 -

acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

- Exhibit B, Page 3 -

EX-10.16

Exhibit 10.16

CARRIZO OIL & GAS, INC.

EMPLOYMENT AGREEMENT

This EMPLOYMENT AGREEMENT (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and _______ (the “Employee”), to be effective as of the __ day of ______________ (the “Agreement Effective Date”). The Company has previously adopted, and the Employee is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to employ the Employee and the Employee hereby agrees to accept employment with the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Employee, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)Position and Duties. As of the Agreement Effective Date, the Employee shall become a full time employee with the initial title and responsibilities of [Title] and during the Employment Period, excluding any periods of vacation and sick leave to which the Employee is entitled, the Employee agrees to devote full attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Employee hereunder, to use the Employee’s reasonable best efforts to perform faithfully and efficiently such responsibilities as may be assigned to the Employee by senior executives of the Company. During the Employment Period, it shall not be a violation of this Agreement for the Employee to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the Employee’s responsibilities as an employee of the Company in accordance with this Agreement; provided that the Employee may not serve on the board of a publicly traded for profit corporation or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board of Directors of the Company (the “Board”).

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(b)Compensation.

(i)Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Employee shall receive an annual base salary of $________ (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis.

(ii)Annual Incentive Bonus. In addition to Annual Base Salary, the Employee may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Incentive Bonus (the “Annual Incentive Bonus”), in an amount as determined by the compensation committee of the Board of Directors of the Company, in its sole discretion, taking into account the Company’s performance, the Employee’s position, responsibilities, and accomplishments with the Company and considering the Employee’s performance review and evaluation and other factors deemed reasonable and appropriate by the compensation committee, prorated for any period consisting of less than 12 full months.

(iii)Incentive, Savings and Retirement Plans. During the Employment Period, the Employee shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other salaried employees of the Company and its affiliated companies. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(iv)Welfare Benefit Plans. During the Employment Period, the Employee and/or the Employee’s dependents, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other salaried employees of the Company and its affiliated companies.

(v)Expenses. During the Employment Period, the Employee shall be entitled to receive prompt reimbursement for all reasonable expenses, including approved professional membership fees, incurred by the Employee in accordance with the policies, practices and procedures of the Company and its affiliated companies.

(vi)Vacation. During the Employment Period, the Employee shall be entitled to paid vacation in accordance with the plans, policies, programs and practices of the Company and its affiliated companies.

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3.Termination of Employment.

(a)Death or Disability. The Employee’s employment shall terminate automatically upon the Employee’s death during the Employment Period. If the Company determines in good faith that the Disability of the Employee has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Employee written notice in accordance with Section 12(d) of this Agreement of its intention to terminate the Employee’s employment. In such event, the Employee’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Employee (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Employee shall not have returned to full-time performance of the Employee’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Employee from the Employee’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Employee or the Employee’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Employee incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Employee’s separation from service.

(b)Cause. The Company may terminate the Employee’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean the Company’s termination of the Employee’s employment for any of the following: (i) the Employee’s final conviction of a felony crime that enriched the Employee at the expense of the Company; provided, however, that after indictment, the Company may suspend the Employee from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a breach by the Employee of a fiduciary duty owed to the Company; (iii) a breach by the Employee of any of the covenants made by him in Sections 7 and 9 hereof; (iv) the willful and gross neglect by the Employee of the duties specifically and expressly required by this Agreement; or (v) the Employee’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Employee’s incapacity due to physical or mental illness or injury).

(c)Other Terminations. The Employee’s employment may be terminated during the Employment Period at any time by the Employee or the Company for any reason.

(d)Notice of Termination. Any termination by the Company for Cause, or by the Employee, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 12(d) of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Employee’s employment is terminated by the Company for Cause,

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the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Employee’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Employee of such termination, (iii) if the Employee’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Employee or the Disability Effective Date, as the case may be and (iv) if the Employee’s employment is terminated by the Employee, the Date of Termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

(f)Deemed Resignations. Unless otherwise agreed to in writing by the Company and Employee prior to the termination of Employee’s employment, any termination of Employee’s employment shall constitute an automatic resignation of Employee as an officer of the Company and each affiliate of the Company, and an automatic resignation of Employee from the Board and the board of directors of the Company (if applicable) and from the board of directors or similar governing body of any affiliate of the Company and from the board of directors or similar governing body of any corporation, limited liability entity or other entity in which the Company or any affiliate holds an equity interest and with respect to which board or similar governing body Employee serves as the Company’s or such affiliate’s designee or other representative.

4.Obligations of the Company upon Termination.

(a)Disability. If, during the Employment Period, the Company shall terminate the Employee’s employment by reason of Disability (but not by reason of death):

(i)the Company shall pay or provide to or in respect of the Employee the following amounts and benefits:

A.in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Employee’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Incentive Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Employee (together with any accrued interest or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any compensation for unused vacation time for which the Employee is eligible in accordance with the plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance

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Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365; provided, however, that if the Employee is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Employee until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Employee had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Employee’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Employee that such termination of employment or cessation of service (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Employee will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits received pursuant to this Agreement; provided, however, that the additional Change in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall provide, the Company shall continue benefits to the Employee and/or the Employee’s dependents at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Employee’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. Notwithstanding the foregoing, if the Company’s obligations contemplated by this Section 4(a)(ii) would result in the imposition of

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excise taxes on the Company for failure to comply with the nondiscrimination requirements of the Patient Protection and Affordable Care Act of 2010, as amended, and the Health Care and Education Reconciliation Act of 2010, as amended (to the extent applicable), the Company shall discontinue the health benefits or reimbursements provided for in this Section 4(a)(ii) and shall instead pay to the Employee a lump-sum payment equal to the employer portion of premium costs of medical and dental benefits provided to the Employee and the Employee’s dependents immediately prior to the Employee’s termination for the remainder of such period no later than 30 days after such determination by the Company. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Employee a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Employee’s Annual Base Salary.

(b)Death. If the Employee’s employment is terminated by reason of the Employee’s death during the Employment Period, this Agreement shall terminate without further obligations to the Employee’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Employee’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Employee’s dependents determined as if the Employee’s employment had not terminated by reason of death, and (iii) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Employee until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Employee had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)With or Without Cause; Other than for Disability. If the Employee’s employment is terminated by the Company or by the Employee for any reason not covered by Sections 4(a) or 4(b) above, then this Agreement shall terminate without further obligations to the Employee other than for Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Employee in a lump sum in cash within 30 days of the Date of Termination.

5.Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Employee’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Employee may qualify, nor shall anything herein limit or otherwise affect such rights as the Employee may have under any contract or agreement with the Company or any of its affiliated companies. Amounts which are vested benefits or which the Employee is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the

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Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

6.Full Settlement; Resolution of Disputes.

(a)Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by the arbitrator pursuant to this Section 6(a). The parties will each bear their own attorneys’ fees and costs in connection with any dispute.

(b)Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Employee’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Employee with a Waiver and Release Agreement on or before the Employee’s Termination Date. The Employee must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Employee, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Employee may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Employee’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Employee’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Employee under the terms of the Agreement (but not the Accrued Obligations).

7.Confidential Information. The Employee shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Employee during the Employee’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Employee or representatives of the Employee in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Employee’s employment with the Company, the Employee shall not, without the prior written consent of the Company or as may otherwise be

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required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 7 constitute a basis for deferring or withholding any amounts otherwise payable to the Employee under this Agreement. Also, within 14 days of the termination of the Employee’s employment for any reason, the Employee shall return to Company all documents and other tangible items of or containing Company information which are in the Employee’s possession, custody or control, or with respect to equipment that is not Company property that is in the Employee’s possession, custody or control and which contains Confidential Information, the Employee shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Employee may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Employee from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

8.Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

9.Non-Compete and Non-Solicitation.

(a)    The Employee recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Employee, therefore, agrees that during the Employment Period and, unless the Date of Termination occurs [(i)] by reason of the Employee terminating his employment for reasons other than Disability or Good Reason [or (ii) in connection with or] [in the two years] following a Change in Control, for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Employee has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render material services to any entity that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into, or take part in, or lend his name, counsel or material assistance to, any entity either as proprietor, principal, or owner of more than 5% of such entity, or act as an officer, executive, employee, consultant, advisor, agent, independent contractor to or for such entity, in either case with respect to an entity that would be directly competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area; provided, however, that the prohibitions set forth in this subparagraphs (i) and (ii) shall not apply to actions by the Employee with respect to any entity where the Employee

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(x) serves as an independent member of the board of directors and where, in respect of his position on the board, the Employee may provide knowledge, counsel and advice that may be informed by his mental impressions, experience and wisdom obtained while employed at the Company, which knowledge, counsel and advice shall not be considered Confidential Information so long as the Employee does not disclose any written, electronic or tangible Confidential Information, (y) is an investor in such an entity, which investment has previously been disclosed to the Company and approved by the Board of Directors of the Company or a committee thereof, or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, officer, employee, employer, advisor, significant stockholder, partner or in any other individual or representative capacity whatsoever, either for the Employee’s own benefit or for the benefit of any other person or entity either (A) directly hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies; provided,however, that the prohibitions set forth in this subparagraph (iii) shall not apply to (x) solicitations made by the Employee or any entity with which the Employee is associated, that are made to the public or the industry generally and not targeted at employees of the Company or its affiliated companies, (y) solicitations in response to any such person who contacts the Employee, or the entity with which the Employee is associated, on his or her own initiative without any prior prohibited solicitations or (z) solicitations implemented or initiated by any entity with which the Employee is associated without the knowledge or participation of the Employee (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 9 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest. For the avoidance of doubt, the provisions of this Section 9 will only apply in the event of [(i)] Employee’s voluntary termination of employment without Good Reason and not for reasons of Disability[ or (ii) Employee’s termination of employment in connection with or following a Change in Control] [unless such termination occurs during the two years following a Change in Control, in which case the provisions of this Section 9 shall no longer be applicable].

(a)In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 9 by the Employee, it is agreed that in the event of any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Employee prohibiting such breach or attempted or threatened breach by proving only the existence of such breach or attempted or threatened breach. If the provisions of this Section 9 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Employee and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

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(b)The covenants of the Employee set forth in this Section 9 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Employee shall not affect the validity of the provisions of this Section 9 or constitute a defense of the Employee in any suit or action brought by the Company to enforce any of the provisions of this Section 9 or seek any relief for the breach thereof by the Employee.

(c)The Employee acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 9 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Employee as contemplated by Section 7, gives rise to the Company’s interest in restraining and prohibiting the Employee from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 9, and the Employee’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 9 is designed to enforce the Employee’s consideration (or return promises), including, without limitation, the Employee’s promise to not disclose Confidential Information under this Agreement.

10.Successors.

(a)This Agreement is personal to the Employee and without the prior written consent of the Company shall not be assignable by the Employee otherwise than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Employee’s heirs, executors and other legal representatives.

(b)This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 10(c).

(c)The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

11.Section 409A.

(a)This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period

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under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Employee’s termination date, or if earlier, the Employee’s death.

(b)Each payment under this Agreement is intended to be excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii) and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(c)All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Employee’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Employee’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

(d)Notwithstanding any provision of this Agreement to the contrary, the Employee acknowledges and agrees that the Company and its employees, officers, directors, affiliates and subsidiaries shall not be liable for, and nothing provided or contained in this Agreement will be construed to obligate or cause the Company and/or its employees, officers, directors, affiliates and subsidiaries to be liable for, any tax, interest or penalties imposed on the Employee related to or arising with respect to any violation of Section 409A.

12.Miscellaneous.

(a)This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and other legal representatives. As applied to the Employee, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Employee without his written consent.

(d)All notices and other communications hereunder shall be in writing and shall be given, if by the Employee to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Employee, either

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by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Employee:

[Name]

c/o Carrizo Oil & Gas, Inc.

500 Dallas, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas, Suite 2300

Houston, Texas 77002

Fax Number: (713) 358-6286

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(f)Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)The Employee’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Employee or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement.

(h)Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and the Employee. Contemporaneously with this Agreement, the Employee shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Employee shall not be entitled to receive both the compensation and benefits provided by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Employee in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Employee than otherwise provided in the Change in Control Severance Plan. If the Employee

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is terminated under circumstances that do not entitle him to the compensation and benefits provided by the Change in Control Severance Plan, the Employee shall be paid the compensation and benefits provided by the applicable part of Section 4.

[REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

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IN WITNESS WHEREOF, the Employee has hereunto set his hand and the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     

Name: S.P. “Chip” Johnson IV

Title: President and Chief Executive Officer

EMPLOYEE

[Name]

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Exhibit A

For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means [97%.]

“Supplemental Severance Multiplier Percentage” means [____%]

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Exhibit B

FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”)described in that certain Employment Agreement (the “Agreement”) effective as of _________________ between Carrizo Oil & Gas, Inc., a Texas Corporation(the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims

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arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of

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them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

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EX-10.23

Exhibit 10.23

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and S.P. Johnson IV (the “Executive”) to be effective as of February 14, 2019 (the “Agreement Effective Date”), and amends and restates the Employment Agreement between the Parties dated as of June 5, 2009.

In entering into this Agreement, the Board of Directors of the Company (the “Board”) desires to provide the Executive with substantial incentives to continue to serve the Company as one of its senior executives performing at the highest level of leadership and stewardship, without distraction or concern over minimum compensation, benefits or tenure, to manage the Company’s future growth and development, and maximize the returns to the Company’s stockholders. Contemporaneously with the execution of this Agreement, the Company is adopting, and Executive is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to continue to employ the Executive and the Executive hereby agrees to remain in the employment of the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Executive, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)Position and Duties.

(i)During the Employment Period, (A) the Executive’s position (including status, offices, titles and reporting requirements), authority, duties and responsibilities shall be at least commensurate in all material respects with the most significant of those held, exercised and assigned on the Agreement Effective Date, which shall in any event include status as President, Chief Executive Officer and member of the Board, and (B) the Executive’s services shall be performed within the Houston, Texas metropolitan area.

(ii)During the Employment Period, excluding any periods of vacation and sick leave to which the Executive is entitled, the Executive agrees to devote full

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attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Executive hereunder, to use the Executive’s reasonable best efforts to perform faithfully and efficiently such responsibilities. During the Employment Period, it shall not be a violation of this Agreement for the Executive to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the Executive’s responsibilities as an employee of the Company in accordance with this Agreement; provided that the Executive may not serve on the board of a publicly traded for profit corporation, or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board. It is expressly understood and agreed that to the extent that any such activities have been conducted by the Executive prior to the Agreement Effective Date, the continued conduct of such activities (or the conduct of activities similar in nature and scope thereto) subsequent to the Agreement Effective Date shall not thereafter be deemed to interfere with the performance of the Executive’s responsibilities to the Company.

(a)Compensation.

(i)Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Executive shall receive an annual base salary of $670,000 (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis. During the Employment Period, the Annual Base Salary shall be reviewed at least annually and shall be increased at any time and from time to time as shall be substantially consistent with increases in base salary generally awarded in the ordinary course of business to executives of the Company and its affiliated companies. Any increase in Annual Base Salary shall not serve to limit or reduce any other obligation to the Executive under this Agreement. Annual Base Salary shall not be reduced after any such increase and the term “Annual Base Salary,” as utilized in this Agreement, shall refer to Annual Base Salary as so increased. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(ii)Annual Bonus. In addition to Annual Base Salary, the Executive may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Bonus (the “Annual Bonus”), in an amount comparable to the Annual Bonus award to other Company executives, taking into account the Executive’s position, responsibilities, and accomplishments with the Company, prorated for any period consisting of less than 12 full months.

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(iii)Incentive, Savings and Retirement Plans. During the Employment Period, the Executive shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other executives of the Company and its affiliated companies, but in no event shall such plans provide the Executive with incentive opportunities (measured with respect to both regular and special incentive opportunities, to the extent, if any, that such distinction is applicable), savings opportunities and retirement benefit opportunities that are, in each case, less favorable to the Executive, in the aggregate, than the most favorable plans of the Company and its affiliated companies. As used in this Agreement, the term “most favorable” shall, when used with reference to any plans, practices, policies or programs of the Company and its affiliated companies, be deemed to refer to the plans, practices, policies or programs of the Company and its affiliated companies, as in effect at any time during the Employment Period and provided generally to other executives of the Company or its affiliated companies, which are most favorable to the Executive.

(iv)Welfare Benefit Plans. During the Employment Period, the Executive and/or the Executive’s family, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other executives of the Company or its affiliated companies, but in no event shall such plans, practices, policies and programs provide the Executive with benefits that are less favorable, in the aggregate, than the most favorable such plans, practices, policies and programs of the Company and its affiliated companies.

(v)Expenses. During the Employment Period, the Executive shall be entitled to receive prompt reimbursement for all reasonable expenses incurred by the Executive in accordance with the most favorable policies, practices and procedures of the Company and its affiliated companies.

(vi)Fringe Benefits and Perquisites. During the Employment Period, the Executive shall be entitled to fringe benefits and perquisites in accordance with the most favorable plans, practices, programs and policies of the Company and its affiliated companies applicable to similarly situated executives.

(vii)Office and Support Staff. During the Employment Period, the Executive shall be entitled to an office or offices of a size and with furnishings and other appointments, and to secretarial and other assistance to the extent needed to fulfill his corporate responsibilities, at least equal to the most favorable of the

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foregoing provided to the Executive by the Company and its affiliated companies at any time during the Employment Period.

(viii)Vacation. During the Employment Period, the Executive shall be entitled to paid vacation in accordance with the most favorable plans, policies, programs and practices of the Company and its affiliated companies.

2.Termination of Employment.

(a)Death or Disability. The Executive’s employment shall terminate automatically upon the Executive’s death during the Employment Period. If the Company determines in good faith that the Disability of the Executive has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Executive written notice in accordance with Section 13(d) of this Agreement of its intention to terminate the Executive’s employment. In such event, the Executive’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Executive (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Executive shall not have returned to full-time performance of the Executive’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Executive from the Executive’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Executive or the Executive’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Executive incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Executive’s separation from service.

(b)Cause. The Company may terminate the Executive’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean for the Company’s termination of the Executive’s employment for any of the following: (i) the Executive’s final conviction of a felony crime that enriched the Executive at the expense of the Company; provided, however, that after indictment, the Company may suspend the Executive from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a material breach by the Executive of a material fiduciary duty owed to the Company; (iii) a material breach by the Executive of any of the covenants made by him in Sections 8 and 10 hereof; (iv) the willful and gross neglect by the Executive of the material duties specifically and expressly required by this Agreement; or (v) the Executive’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Executive’s incapacity due to physical or mental illness or injury) for a period of 45 days after the Required Board Majority, as defined herein, has delivered to the Executive a written demand for substantial performance hereunder which specifically identifies the bases for the Required Board Majority’s determination that the Executive has not substantially performed his duties and responsibilities hereunder (that period being the “Grace Period”); provided, that for purposes of this clause (v), the Company shall not have Cause to terminate the Executive’s employment unless (A) at a meeting of the Board called

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and held following the Grace Period in the city in which the Company’s principal executive offices are located, of which the Executive was given not less than 10 days’ prior written notice and at which the Executive was afforded the opportunity to be represented by counsel, appear and be heard, the Required Board Majority shall adopt a written resolution which (1) sets forth the Required Board Majority’s determination that the failure of the Executive to substantially perform his duties and responsibilities hereunder has (except by reason of his incapacity due to physical or mental illness or injury) continued past the Grace Period and (2) specifically identifies the bases for that determination, and (B) the Company, at the written direction of the Required Board Majority, shall deliver to the Executive a Notice of Termination for Cause to which a copy of that resolution, certified as being true and correct by the secretary or any assistant secretary of the Company, is attached. “Required Board Majority” means at any time a majority of the members of the Board at that time which includes at least a majority of the Directors, each of whom has not been an employee of the Company or any subsidiary of the Company.

(c)Good Reason; Other Terminations. The Executive’s employment may be terminated during the Employment Period by the Executive for Good Reason, or by the Executive other than for Good Reason. For purposes of this Agreement, “Good Reason” shall mean:

(i)the assignment to the Executive of any duties materially inconsistent in any respect with the Executive’s position (including status, offices, titles and reporting requirements), authority, duties or responsibilities as contemplated by Section 2 of this Agreement, or any other action by the Company which results in a material diminution, in absolute terms, in such position, authority, duties or responsibilities, excluding for this purpose an isolated, insubstantial and inadvertent action not taken in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(ii)any material failure by the Company to comply with any of the provisions of this Agreement, other than an isolated, insubstantial and inadvertent failure not occurring in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(iii)the Company’s requiring the Executive to be based at any office outside the Houston metropolitan area;

(iv)any purported termination by the Company of the Executive’s employment otherwise than as expressly permitted by this Agreement; or

(v)any failure by the Company to comply with and satisfy the requirements of Section 11 of this Agreement, provided that (A) the successor described in Section 11(c) has received, at least 10 days prior to the Date of Termination (as defined in subparagraph (e) below), written notice from the Company or the Executive of the requirements of such provision and (B) such failure to be in compliance and satisfy the requirements of Section 11 shall continue as of the Date of Termination; or

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(vi)any failure to reelect Executive as a member of the Board.

Notwithstanding any provision to the contrary, in order for any event(s) in subparagraph (i) through (v) above to constitute “Good Reason” for purposes of this Agreement, (A) the Executive must notify the Company via Notice of Termination within 90 days following the initial occurrence of the event(s) that the Executive intends to terminate his employment with the Company because of the occurrence of Good Reason (which event must be described by the Executive in reasonable detail in the Notice of Termination) and (B) within 60 days after receiving such Notice of Termination from the Executive (the “Correction Period”), the Company must fail to reinstate the Executive to the position he was in, or otherwise cure the circumstances giving rise to Good Reason. Executive’s termination for Good Reason may occur only within 60 days following the expiration of the Correction Period.

(d)Notice of Termination. Any termination by the Company for Cause, or by the Executive for Good Reason or without any reason, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 13 of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Executive’s employment is terminated by the Company for Cause, or by the Executive for Good Reason, the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Executive’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Executive of such termination, (iii) if the Executive’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Executive or the Disability Effective Date, as the case may be and (iv) if the Executive’s employment is terminated by the Executive other than for Good Reason, the date of termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

3.Obligations of the Company upon Termination.

(a)Disability, Good Reason; Other than for Cause or Death. If, during the Employment Period, (x) the Company shall terminate the Executive’s employment other than for Cause, including a termination by reason of Disability (but not by reason of death), or (y) the Executive shall terminate employment for Good Reason:

(i)the Company shall pay or provide to or in respect of the Executive the following amounts and benefits:

A.in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Executive’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Executive (together with any accrued interest

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or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any compensation for unused vacation time for which the Executive is eligible in accordance with the most favorable plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365, provided, however, that if the Executive is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Executive until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Executive’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Executive that such termination of employment or cessation of service as an officer (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Executive will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits

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received pursuant to this Agreement; provided, however, that the additional Change in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall provide, the Company shall continue benefits to the Executive and/or the Executive’s family at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Executive’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Executive a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Executive’s Annual Base Salary.

(b)Death. If the Executive’s employment is terminated by reason of the Executive’s death during the Employment Period, this Agreement shall terminate without further obligations to the Executive’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Executive’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) providing the Executive with Company-paid term life insurance protection with a death benefit at least equal to the Supplemental Life Insurance Benefit (as defined in Exhibit A) multiplied by the Executive’s Annual Base Salary, with such coverage being supplemental to any other Company-paid group life insurance policy, (iii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Executive’s dependents determined as if the Executive’s employment had not terminated by reason of death, and (iv) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Executive until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)Cause; Other than for Disability or Good Reason. If the Executive’s employment shall be terminated for Cause during the Employment Period, this Agreement shall terminate without further obligations to the Executive other than for Accrued Obligations. If the Executive terminates employment during the Employment Period, excluding a termination for any Disability or Good Reason, this Agreement shall terminate without further obligations to the Executive, other than for the payment of Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Executive in a lump sum in cash within 30 days of the Date of Termination.

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4.Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Executive’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Executive may qualify, nor shall anything herein limit or otherwise affect such rights as the Executive may have under any contract or agreement with the Company or any of its affiliated companies. Amounts which are vested benefits or which the Executive is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

5.Full Settlement; Resolution of Disputes.

(a)The Company’s obligation to make payments provided for in this Agreement and otherwise to perform its obligations hereunder shall not be affected by any setoff, counterclaim, recoupment, defense, mitigation or other claim, right or action which the Company may have against the Executive or others. In the event (i) prior to a Change in Control, the Executive’s employment is terminated for any reason other than Executive’s voluntary termination (with or without Good Reason), or (ii) within two years after a Change in Control, the Executive’s employment is terminated by the Company or the Executive for any reason, the Company agrees to pay promptly as incurred, to the full extent permitted by law, all legal fees and expenses which the Executive may reasonably incur as a result of any arbitration pursuant to Section 6(b) or a dispute regarding Executive’s eligibility for Severance Benefits pursuant to the Change in Control Severance Plan (regardless of the outcome thereof) initiated by the Company, the Executive or others regarding the validity or enforceability of, or liability under, any provision of this Agreement or the Change in Control Severance Plan or any guarantee of performance thereof (including as a result of any contest by the Executive about the amount of any such payment pursuant to this Agreement or the Change in Control Severance Plan), plus in each case interest on any delayed payment at the annual percentage rate which is three percentage points above the interest rate shown as the Prime Rate in the Money Rates column in the then most recently published edition of The Wall Street Journal (Southwest Edition), or, if such rate is not then so published on at least a weekly basis, the interest rate announced by Wells Fargo & Company (or its successor), from time to time, as its Base Rate (or prime lending rate), from the date those amounts were required to have been paid or reimbursed to the Employee until those amounts are finally and fully paid or reimbursed; provided, however, that in no event shall the amount of interest contracted for, charged or received hereunder exceed the maximum non-usurious amount of interest allowed by applicable law; provided, further, that if the Executive is not the prevailing party in any such arbitration or other dispute, then he shall, upon the conclusion thereof, repay to the Company any amounts that were previously advanced pursuant to this sentence by the Company as payment of legal fees and expenses.

(b)Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award

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rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by the arbitrator pursuant to this Section 6(b). The parties will each bear their own attorneys’ fees and costs in connection with any dispute, except in the circumstances in which the Company is required to advance the Executive’s attorneys’ fees in accordance with Section 6(a).

(c)If, upon a termination within two years following a Change in Control, there shall be any dispute between the Company and the Executive concerning Executive’s eligibility for Severance Benefits under the Change in Control Severance Plan, then, unless and until there is a final determination by an arbitrator or a court of competent jurisdiction declaring that such termination was not eligible for Severance Benefits under the Change in Control Severance Plan, the Company shall pay all amounts, and provide all benefits, to the Executive and/or the Executive’s family or other beneficiaries, as the case may be, that the Company would be required to pay or provide pursuant to the Change in Control Severance Plan as though such termination was eligible for Severance Benefits under the Change in Control Severance Plan; provided, however, that the Company shall not be required to pay any disputed amounts pursuant to this paragraph except upon receipt of an undertaking by or on behalf of the Executive to repay all such amounts to which the Executive is ultimately adjudged by an arbitrator or a court of competent jurisdiction not to be so entitled.

(d)Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Executive’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Executive with a Waiver and Release Agreement on or before the Executive’s Termination Date. The Executive must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Executive, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Executive may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Executive’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Executive’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Executive under the terms of the Agreement (but not the Accrued Obligations).

6.Reserved.

7.Confidential Information. The Executive shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the

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Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Executive during the Executive’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Executive or representatives of the Executive in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Executive’s employment with the Company, the Executive shall not, without the prior written consent of the Company or as may otherwise be required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 8 constitute a basis for deferring or withholding any amounts otherwise payable to the Executive under this Agreement. Also, within 14 days of the termination of the Executive’s employment for any reason, the Executive shall return to Company all documents and other tangible items of or containing Company information which are in the Executive’s possession, custody or control, or with respect to equipment that is not Company property that is in the Executive’s possession, custody or control and which contains Confidential Information, the Executive shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Executive may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Executive from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

8.Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

9.Non-Compete and Non-Solicitation.

(a)The Executive recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Executive, therefore, agrees that during the Employment Period and, if the Date of Termination occurs (i) by reason of the Executive terminating his employment for reasons other than Disability or Good Reason or (ii) in connection with or following a Change in Control, for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Executive has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render material services to any entity that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into, or take part in, or lend his name, counsel or material

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assistance to, any entity either as proprietor, principal, or owner of more than 5% of such entity, or act as an officer, executive, employee, consultant, advisor, agent, independent contractor to or for such entity, in either case with respect to an entity that would be directly competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area; provided, however, that the prohibitions set forth in this subparagraphs (i) and (ii) shall not apply to actions by the Executive with respect to any entity where the Executive (x) serves as an independent member of the board of directors and where, in respect of his position on the board, the Executive may provide knowledge, counsel and advice that may be informed by his mental impressions, experience and wisdom obtained while employed at the Company, which knowledge, counsel and advice shall not be considered Confidential Information so long as the Executive does not disclose any written, electronic or tangible Confidential Information, (y) is an investor in such an entity, which investment has previously been disclosed to the Company and approved by the Board of Directors of the Company or a committee thereof, or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, officer, employee, employer, advisor, significant stockholder, partner or in any other individual or representative capacity whatsoever, either for the Executive’s own benefit or for the benefit of any other person or entity either (A) directly hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies; provided,however, that the prohibitions set forth in this subparagraph (iii) shall not apply to (x) solicitations made by the Executive or any entity with which the Executive is associated, that are made to the public or the industry generally and not targeted at employees of the Company or its affiliated companies, (y) solicitations in response to any such person who contacts the Executive, or the entity with which the Executive is associated, on his or her own initiative without any prior prohibited solicitations or (z) solicitations implemented or initiated by any entity with which the Executive is associated without the knowledge or participation of the Executive (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 10 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest. For the avoidance of doubt, the provisions of this Section 10 will only apply in the event of (i) Executive’s voluntary termination of employment without Good Reason and not for reasons of Disability or (ii) Executive’s termination of employment in connection with or following a Change in Control.

(b)In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 10 by the Executive, it is agreed that in the event of any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Executive prohibiting such breach or attempted or threatened breach by proving only the existence of such

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breach or attempted or threatened breach. If the provisions of this Section 10 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Executive and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

(c)The covenants of the Executive set forth in this Section 10 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Executive shall not affect the validity of the provisions of this Section 10 or constitute a defense of the Executive in any suit or action brought by the Company to enforce any of the provisions of this Section 10 or seek any relief for the breach thereof by the Executive.

(d)The Executive acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 10 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Executive as contemplated by Section 8, gives rise to the Company’s interest in restraining and prohibiting the Executive from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 10, and the Executive’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 10 is designed to enforce the Executive’s consideration (or return promises), including, without limitation, the Executive’s promise to not disclose Confidential Information under this Agreement.

10.Successors.

(a)This Agreement is personal to the Executive and without the prior written consent of the Company shall not be assignable by the Executive otherwise than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Executive’s heirs, executors and other legal representatives.

(b)This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 11(c).

(c)The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

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11.Section 409A.

(b)This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Executive’s termination date, or if earlier, the Executive’s death.

(c)Each payment under this Agreement is intended to be (i) excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii), or (ii) in the event any Gross Up Payment is made pursuant to Section 7(a) herein, in compliance with Section 409A, including, but not limited to, being paid pursuant to a fixed schedule or specified date pursuant to Treasury Regulation § 1.409A-3(i)(1)(v), and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(d)All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Executive’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Executive’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

12.Miscellaneous.

(a)This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and other legal representatives. As applied to the Executive, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Executive without his written consent.

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(d)All notices and other communications hereunder shall be in writing and shall be given, if by the Executive to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Executive, either by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Executive:

S.P. Johnson IV

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

Fax Number: (713) 328-1060

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(f)Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)The Executive’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Executive or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement; provided, however, that any claim for “Good Reason” termination must be raised within 90 days following the occurrence of the event giving rise to the right to terminate for “Good Reason” as set forth in Section 3(c) hereof.

(h)Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and Executive. Contemporaneously with this Agreement, Executive shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Executive shall not be entitled to receive both the compensation and benefits provided

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by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Executive in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Executive than otherwise provided in the Change in Control Severance Plan. If Executive is terminated under circumstances that do not entitle him to the compensation and benefits provided by the Change in Control Severance Plan, Executive shall be paid the compensation and benefits provided by the applicable part of Section 4.

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IN WITNESS WHEREOF, the Executive has hereunto set his hand and, pursuant to the authorization from its Board, the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     /s/ David L. Pitts            _______

Name: David L. Pitts                

Title: Vice President and Chief Financial Officer                

EXECUTIVE

/s/ S.P. Johnson IV                    

Name: S.P. Johnson IV

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EXHIBIT A TO AMENDED AND RESTATED EMPLOYMENT AGREEMENT DATED February 14, 2019

1. For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means 145%.

“Supplemental Life Insurance Benefit” means 2.0.

“Supplemental Severance Multiplier Percentage” means 100%.

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EXHIBIT B – FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”)described in that certain Amended and Restated Employment Agreement (the “Agreement”) effective as of February 14, 2019 between Carrizo Oil & Gas, Inc., a Texas Corporation(the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

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Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other

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disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the

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benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ___ day of _________________, 20__.

[Name]

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EX-10.24

Exhibit 10.24

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and J. Bradley Fisher (the “Executive”) to be effective as of February 14, 2019 (the “Agreement Effective Date”), and amends and restates the Employment Agreement between the Parties dated as of June 5, 2009.

In entering into this Agreement, the Board of Directors of the Company (the “Board”) desires to provide the Executive with substantial incentives to continue to serve the Company as one of its senior executives performing at the highest level of leadership and stewardship, without distraction or concern over minimum compensation, benefits or tenure, to manage the Company’s future growth and development, and maximize the returns to the Company’s stockholders. Contemporaneously with the execution of this Agreement, the Company is adopting, and Executive is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to continue to employ the Executive and the Executive hereby agrees to remain in the employment of the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Executive, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)Position and Duties.

(i)As of the Agreement Effective Date, the Executive shall continue as a full time employee and company officer with the title and responsibilities of Vice President of Operations and Chief Operating Officer and during the Employment Period, (A) the Executive’s position (including status, offices, titles and reporting requirements), authority, duties and responsibilities shall be at least commensurate in all material respects with the most significant of those held, exercised and assigned on the Agreement Effective Date, and (B) the Executive’s services shall be performed within the Houston, Texas metropolitan area.

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(ii)During the Employment Period, and excluding any periods of vacation and sick leave to which the Executive is entitled, the Executive agrees to devote full attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Executive hereunder, to use the Executive’s reasonable best efforts to perform faithfully and efficiently such responsibilities. During the Employment Period, it shall not be a violation of this Agreement for the Executive to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the Executive’s responsibilities as an employee of the Company in accordance with this Agreement; provided that the Executive may not serve on the board of a publicly traded for profit corporation, or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board. It is expressly understood and agreed that to the extent that any such activities have been conducted by the Executive prior to the Agreement Effective Date, the continued conduct of such activities (or the conduct of activities similar in nature and scope thereto) subsequent to the Agreement Effective Date shall not thereafter be deemed to interfere with the performance of the Executive’s responsibilities to the Company.

(b)Compensation.

(i)Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Executive shall receive an annual base salary of $500,000 (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis. During the Employment Period, the Annual Base Salary shall be reviewed at least annually and shall be increased at any time and from time to time as shall be substantially consistent with increases in base salary generally awarded in the ordinary course of business to executives of the Company and its affiliated companies. Any increase in Annual Base Salary shall not serve to limit or reduce any other obligation to the Executive under this Agreement. Annual Base Salary shall not be reduced after any such increase and the term “Annual Base Salary,” as utilized in this Agreement, shall refer to Annual Base Salary as so increased. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(ii)Annual Bonus. In addition to Annual Base Salary, the Executive may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Bonus (the “Annual Bonus”), in an amount comparable to the Annual Bonus award to other Company executives, taking into account the Executive’s position, responsibilities, and accomplishments with the Company, prorated for any period consisting of less than 12 full months.

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(iii)Incentive, Savings and Retirement Plans. During the Employment Period, the Executive shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other executives of the Company and its affiliated companies, but in no event shall such plans provide the Executive with incentive opportunities (measured with respect to both regular and special incentive opportunities, to the extent, if any, that such distinction is applicable), savings opportunities and retirement benefit opportunities that are, in each case, less favorable to the Executive, in the aggregate, than the most favorable plans of the Company and its affiliated companies. As used in this Agreement, the term “most favorable” shall, when used with reference to any plans, practices, policies or programs of the Company and its affiliated companies, be deemed to refer to the plans, practices, policies or programs of the Company and its affiliated companies, as in effect at any time during the Employment Period and provided generally to other executives of the Company or its affiliated companies, which are most favorable to the Executive.

(iv)Welfare Benefit Plans. During the Employment Period, the Executive and/or the Executive’s family, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other executives of the Company or its affiliated companies, but in no event shall such plans, practices, policies and programs provide the Executive with benefits that are less favorable, in the aggregate, than the most favorable such plans, practices, policies and programs of the Company and its affiliated companies.

(v)Expenses. During the Employment Period, the Executive shall be entitled to receive prompt reimbursement for all reasonable expenses incurred by the Executive in accordance with the most favorable policies, practices and procedures of the Company and its affiliated companies.

(i)Fringe Benefits and Perquisites. During the Employment Period, the Executive shall be entitled to fringe benefits and perquisites in accordance with the most favorable plans, practices, programs and policies of the Company and its affiliated companies applicable to similarly situated executives.

(ii)Office and Support Staff. During the Employment Period, the Executive shall be entitled to an office or offices of a size and with furnishings and other appointments, and to secretarial and other assistance to the extent needed to fulfill his corporate responsibilities, at least equal to the most favorable of the

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foregoing provided to the Executive by the Company and its affiliated companies at any time during the Employment Period.

(vi)Vacation. During the Employment Period, the Executive shall be entitled to paid vacation in accordance with the most favorable plans, policies, programs and practices of the Company and its affiliated companies.

3.Termination of Employment.

(a)Death or Disability. The Executive’s employment shall terminate automatically upon the Executive’s death during the Employment Period. If the Company determines in good faith that the Disability of the Executive has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Executive written notice in accordance with Section 13(d) of this Agreement of its intention to terminate the Executive’s employment. In such event, the Executive’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Executive (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Executive shall not have returned to full-time performance of the Executive’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Executive from the Executive’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Executive or the Executive’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Executive incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Executive’s separation from service.

(b)Cause. The Company may terminate the Executive’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean for the Company’s termination of the Executive’s employment for any of the following: (i) the Executive’s final conviction of a felony crime that enriched the Executive at the expense of the Company; provided, however, that after indictment, the Company may suspend the Executive from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a material breach by the Executive of a material fiduciary duty owed to the Company; (iii) a material breach by the Executive of any of the covenants made by him in Sections 8 and 10 hereof; (iv) the willful and gross neglect by the Executive of the material duties specifically and expressly required by this Agreement; or (v) the Executive’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Executive’s incapacity due to physical or mental illness or injury) for a period of 45 days after the Required Board Majority, as defined herein, has delivered to the Executive a written demand for substantial performance hereunder which specifically identifies the bases for the Required Board Majority’s determination that the Executive has not substantially performed his duties and responsibilities hereunder (that period being the “Grace Period”); provided, that for purposes of this clause (v), the Company shall not have Cause to terminate the Executive’s employment unless (A) at a meeting of the Board called

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and held following the Grace Period in the city in which the Company’s principal executive offices are located, of which the Executive was given not less than 10 days’ prior written notice and at which the Executive was afforded the opportunity to be represented by counsel, appear and be heard, the Required Board Majority shall adopt a written resolution which (1) sets forth the Required Board Majority’s determination that the failure of the Executive to substantially perform his duties and responsibilities hereunder has (except by reason of his incapacity due to physical or mental illness or injury) continued past the Grace Period and (2) specifically identifies the bases for that determination, and (B) the Company, at the written direction of the Required Board Majority, shall deliver to the Executive a Notice of Termination for Cause to which a copy of that resolution, certified as being true and correct by the secretary or any assistant secretary of the Company, is attached. “Required Board Majority” means at any time a majority of the members of the Board at that time which includes at least a majority of the Directors, each of whom has not been an employee of the Company or any subsidiary of the Company.

(c)Good Reason; Other Terminations. The Executive’s employment may be terminated during the Employment Period by the Executive for Good Reason, or by the Executive other than for Good Reason. For purposes of this Agreement, “Good Reason” shall mean:

(i)the assignment to the Executive of any duties materially inconsistent in any respect with the Executive’s position (including status, offices, titles and reporting requirements), authority, duties or responsibilities as contemplated by Section 2 of this Agreement, or any other action by the Company which results in a material diminution, in absolute terms, in such position, authority, duties or responsibilities, excluding for this purpose an isolated, insubstantial and inadvertent action not taken in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(ii)any material failure by the Company to comply with any of the provisions of this Agreement, other than an isolated, insubstantial and inadvertent failure not occurring in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(iii)the Company’s requiring the Executive to be based at any office outside the Houston metropolitan area;

(i)any purported termination by the Company of the Executive’s employment otherwise than as expressly permitted by this Agreement; or

(ii)any failure by the Company to comply with and satisfy the requirements of Section 11 of this Agreement, provided that (A) the successor described in Section 11(c) has received, at least 10 days prior to the Date of Termination (as defined in subparagraph (e) below), written notice from the Company or the Executive of the requirements of such provision and (B) such failure to be in compliance and satisfy the requirements of Section 11 shall continue as of the Date of Termination.

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Notwithstanding any provision to the contrary, in order for any event(s) in subparagraph (i) through (v) above to constitute “Good Reason” for purposes of this Agreement, (A) the Executive must notify the Company via Notice of Termination within 90 days following the initial occurrence of the event(s) that the Executive intends to terminate his employment with the Company because of the occurrence of Good Reason (which event must be described by the Executive in reasonable detail in the Notice of Termination) and (B) within 60 days after receiving such Notice of Termination from the Executive (the “Correction Period”), the Company must fail to reinstate the Executive to the position he was in, or otherwise cure the circumstances giving rise to Good Reason. Executive’s termination for Good Reason may occur only within 60 days following the expiration of the Correction Period.

(d)Notice of Termination. Any termination by the Company for Cause, or by the Executive for Good Reason or without any reason, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 13 of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Executive’s employment is terminated by the Company for Cause, or by the Executive for Good Reason, the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Executive’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Executive of such termination, (iii) if the Executive’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Executive or the Disability Effective Date, as the case may be and (iv) if the Executive’s employment is terminated by the Executive other than for Good Reason, the date of termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

4.Obligations of the Company upon Termination.

(a)Disability, Good Reason; Other than for Cause or Death. If, during the Employment Period, (x) the Company shall terminate the Executive’s employment other than for Cause, including a termination by reason of Disability (but not by reason of death), or (y) the Executive shall terminate employment for Good Reason:

(i)the Company shall pay or provide to or in respect of the Executive the following amounts and benefits:

A.    in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Executive’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Executive (together with any accrued interest or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any

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compensation for unused vacation time for which the Executive is eligible in accordance with the most favorable plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.    in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.    in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365, provided, however, that if the Executive is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.    effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Executive until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Executive’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Executive that such termination of employment or cessation of service as an officer (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Executive will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits received pursuant to this Agreement; provided, however, that the additional Change

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in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall provide, the Company shall continue benefits to the Executive and/or the Executive’s family at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Executive’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Executive a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Executive’s Annual Base Salary.

(b)Death. If the Executive’s employment is terminated by reason of the Executive’s death during the Employment Period, this Agreement shall terminate without further obligations to the Executive’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Executive’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) providing the Executive with Company-paid term life insurance protection with a death benefit at least equal to the Supplemental Life Insurance Benefit (as defined in Exhibit A) multiplied by the Executive’s Annual Base Salary, with such coverage being supplemental to any other Company-paid group life insurance policy, (iii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Executive’s dependents determined as if the Executive’s employment had not terminated by reason of death, and (iv) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Executive until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)Cause; Other than for Disability or Good Reason. If the Executive’s employment shall be terminated for Cause during the Employment Period, this Agreement shall terminate without further obligations to the Executive other than for Accrued Obligations. If the Executive terminates employment during the Employment Period, excluding a termination for any Disability or Good Reason, this Agreement shall terminate without further obligations to the Executive, other than for the payment of Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Executive in a lump sum in cash within 30 days of the Date of Termination.

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5.Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Executive’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Executive may qualify, nor shall anything herein limit or otherwise affect such rights as the Executive may have under any contract or agreement with the Company or any of its affiliated companies. Amounts which are vested benefits or which the Executive is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

6.Full Settlement; Resolution of Disputes.

(a)The Company’s obligation to make payments provided for in this Agreement and otherwise to perform its obligations hereunder shall not be affected by any setoff, counterclaim, recoupment, defense, mitigation or other claim, right or action which the Company may have against the Executive or others. In the event (i) prior to a Change in Control, the Executive’s employment is terminated for any reason other than Executive’s voluntary termination (with or without Good Reason), or (ii) within two years after a Change in Control, the Executive’s employment is terminated by the Company or the Executive for any reason, the Company agrees to pay promptly as incurred, to the full extent permitted by law, all legal fees and expenses which the Executive may reasonably incur as a result of any arbitration pursuant to Section 6(b) or a dispute regarding Executive’s eligibility for Severance Benefits pursuant to the Change in Control Severance Plan (regardless of the outcome thereof) initiated by the Company, the Executive or others regarding the validity or enforceability of, or liability under, any provision of this Agreement or the Change in Control Severance Plan or any guarantee of performance thereof (including as a result of any contest by the Executive about the amount of any such payment pursuant to this Agreement or the Change in Control Severance Plan), plus in each case interest on any delayed payment at the annual percentage rate which is three percentage points above the interest rate shown as the Prime Rate in the Money Rates column in the then most recently published edition of The Wall Street Journal (Southwest Edition), or, if such rate is not then so published on at least a weekly basis, the interest rate announced by Wells Fargo & Company (or its successor), from time to time, as its Base Rate (or prime lending rate), from the date those amounts were required to have been paid or reimbursed to the Employee until those amounts are finally and fully paid or reimbursed; provided, however, that in no event shall the amount of interest contracted for, charged or received hereunder exceed the maximum non-usurious amount of interest allowed by applicable law; provided, further, that if the Executive is not the prevailing party in any such arbitration or other dispute, then he shall, upon the conclusion thereof, repay to the Company any amounts that were previously advanced pursuant to this sentence by the Company as payment of legal fees and expenses.

(b)Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award

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rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by the arbitrator pursuant to this Section 6(b). The parties will each bear their own attorneys’ fees and costs in connection with any dispute, except in the circumstances in which the Company is required to advance the Executive’s attorneys’ fees in accordance with Section 6(a).

(c)If, upon a termination within two years following a Change in Control, there shall be any dispute between the Company and the Executive concerning Executive’s eligibility for Severance Benefits under the Change in Control Severance Plan, then, unless and until there is a final determination by an arbitrator or a court of competent jurisdiction declaring that such termination was not eligible for Severance Benefits under the Change in Control Severance Plan, the Company shall pay all amounts, and provide all benefits, to the Executive and/or the Executive’s family or other beneficiaries, as the case may be, that the Company would be required to pay or provide pursuant to the Change in Control Severance Plan as though such termination was eligible for Severance Benefits under the Change in Control Severance Plan; provided, however, that the Company shall not be required to pay any disputed amounts pursuant to this paragraph except upon receipt of an undertaking by or on behalf of the Executive to repay all such amounts to which the Executive is ultimately adjudged by an arbitrator or a court of competent jurisdiction not to be so entitled.

(d)Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Executive’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Executive with a Waiver and Release Agreement on or before the Executive’s Termination Date. The Executive must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Executive, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Executive may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Executive’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Executive’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Executive under the terms of the Agreement (but not the Accrued Obligations).

7.Reserved.

8.Confidential Information. The Executive shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the

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Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Executive during the Executive’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Executive or representatives of the Executive in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Executive’s employment with the Company, the Executive shall not, without the prior written consent of the Company or as may otherwise be required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 8 constitute a basis for deferring or withholding any amounts otherwise payable to the Executive under this Agreement. Also, within 14 days of the termination of the Executive’s employment for any reason, the Executive shall return to Company all documents and other tangible items of or containing Company information which are in the Executive’s possession, custody or control, or with respect to equipment that is not Company property that is in the Executive’s possession, custody or control and which contains Confidential Information, the Executive shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Executive may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Executive from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

9.Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

10.Non-Compete and Non-Solicitation.

(a)The Executive recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Executive, therefore, agrees that during the Employment Period and, if the Date of Termination occurs (i) by reason of the Executive terminating his employment for reasons other than Disability or Good Reason or (ii) in connection with or following a Change in Control, for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Executive has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render material services to any entity that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into, or take part in, or lend his name, counsel or material

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assistance to, any entity either as proprietor, principal, or owner of more than 5% of such entity, or act as an officer, executive, employee, consultant, advisor, agent, independent contractor to or for such entity, in either case with respect to an entity that would be directly competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area; provided, however, that the prohibitions set forth in this subparagraphs (i) and (ii) shall not apply to actions by the Executive with respect to any entity where the Executive (x) serves as an independent member of the board of directors and where, in respect of his position on the board, the Executive may provide knowledge, counsel and advice that may be informed by his mental impressions, experience and wisdom obtained while employed at the Company, which knowledge, counsel and advice shall not be considered Confidential Information so long as the Executive does not disclose any written, electronic or tangible Confidential Information, (y) is an investor in such an entity, which investment has previously been disclosed to the Company and approved by the Board of Directors of the Company or a committee thereof, or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, officer, employee, employer, advisor, significant stockholder, partner or in any other individual or representative capacity whatsoever, either for the Executive’s own benefit or for the benefit of any other person or entity either (A) directly hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies; provided,however, that the prohibitions set forth in this subparagraph (iii) shall not apply to (x) solicitations made by the Executive or any entity with which the Executive is associated, that are made to the public or the industry generally and not targeted at employees of the Company or its affiliated companies, (y) solicitations in response to any such person who contacts the Executive, or the entity with which the Executive is associated, on his or her own initiative without any prior prohibited solicitations or (z) solicitations implemented or initiated by any entity with which the Executive is associated without the knowledge or participation of the Executive (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 10 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest. For the avoidance of doubt, the provisions of this Section 10 will only apply in the event of (i) Executive’s voluntary termination of employment without Good Reason and not for reasons of Disability or (ii) Executive’s termination of employment in connection with or following a Change in Control.

(b)In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 10 by the Executive, it is agreed that in the event of any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Executive prohibiting such breach or attempted or threatened breach by proving only the existence of such

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breach or attempted or threatened breach. If the provisions of this Section 10 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Executive and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

(c)The covenants of the Executive set forth in this Section 10 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Executive shall not affect the validity of the provisions of this Section 10 or constitute a defense of the Executive in any suit or action brought by the Company to enforce any of the provisions of this Section 10 or seek any relief for the breach thereof by the Executive.

(d)The Executive acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 10 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Executive as contemplated by Section 8, gives rise to the Company’s interest in restraining and prohibiting the Executive from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 10, and the Executive’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 10 is designed to enforce the Executive’s consideration (or return promises), including, without limitation, the Executive’s promise to not disclose Confidential Information under this Agreement.

11.Successors.

(a)This Agreement is personal to the Executive and without the prior written consent of the Company shall not be assignable by the Executive otherwise than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Executive’s heirs, executors and other legal representatives.

(b)This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 11(c).

(c)The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

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12.Section 409A.

(a)This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Executive’s termination date, or if earlier, the Executive’s death.

(b)Each payment under this Agreement is intended to be (i) excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii), or (ii) in the event any Gross Up Payment is made pursuant to Section 7(a) herein, in compliance with Section 409A, including, but not limited to, being paid pursuant to a fixed schedule or specified date pursuant to Treasury Regulation § 1.409A-3(i)(1)(v), and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(c)All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Executive’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Executive’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

13.Miscellaneous.

(a)This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and other legal representatives. As applied to the Executive, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Executive without his written consent.

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(d)All notices and other communications hereunder shall be in writing and shall be given, if by the Executive to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Executive, either by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Executive:

John B. Fisher

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

Fax Number: (713) 328-1060

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(f)Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)The Executive’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Executive or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement; provided, however, that any claim for “Good Reason” termination must be raised within 90 days following the occurrence of the event giving rise to the right to terminate for “Good Reason” as set forth in Section 3(c) hereof.

(h)Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and Executive. Contemporaneously with this Agreement, Executive shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Executive shall not be entitled to receive both the compensation and benefits provided

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by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Executive in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Executive than otherwise provided in the Change in Control Severance Plan. If Executive is terminated under circumstances that do not entitle him to the compensation and benefits provided by the Change in Control Severance Plan, Executive shall be paid the compensation and benefits provided by the applicable part of Section 4.

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IN WITNESS WHEREOF, the Executive has hereunto set his hand and, pursuant to the authorization from its Board, the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     /s/ David L. Pitts            _______

Name: David L. Pitts                

Title: Vice President and Chief Financial Officer     

EXECUTIVE

/s/ J. Bradley Fisher                    

Name: J. Bradley Fisher

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EXHIBIT A TO AMENDED AND RESTATED EMPLOYMENT AGREEMENT DATED February 14, 2019

1. For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means 145%.

“Supplemental Life Insurance Benefit” means 1.9.

“Supplemental Severance Multiplier Percentage” means 90%.

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EXHIBIT B – FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”)described in that certain Amended and Restated Employment Agreement (the “Agreement”) effective as of February 14, 2019 between Carrizo Oil & Gas, Inc., a Texas Corporation(the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims

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arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of

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them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

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EX-10.25

Exhibit 10.25

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and David L. Pitts (the “Executive”) to be effective as of February 14, 2019 (the “Agreement Effective Date”), and amends and restates the Employment Agreement between the Parties dated as of January 15, 2010.

In entering into this Agreement, the Board of Directors of the Company (the “Board”) desires to provide the Executive with substantial incentives to continue to serve the Company as one of its senior executives performing at the highest level of leadership and stewardship, without distraction or concern over minimum compensation, benefits or tenure, to manage the Company’s future growth and development, and maximize the returns to the Company’s stockholders. Contemporaneously with the execution of this Agreement, the Company is adopting, and Executive is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to continue to employ the Executive and the Executive hereby agrees to remain in the employment of the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Executive, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)    Position and Duties. As of the Agreement Effective Date, the Executive shall continue as a full time employee and company officer with the title and responsibilities of Vice President and Chief Financial Officer and during the Employment Period, excluding any periods of vacation and sick leave to which the Executive is entitled, the Executive agrees to devote full attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Executive hereunder, to use the Executive’s reasonable best efforts to perform faithfully and efficiently such responsibilities. During the Employment Period, it shall not be a violation of this Agreement for the Executive to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the

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Executive’s responsibilities as an employee of the Company in accordance with this Agreement; provided that the Executive may not serve on the board of a publicly traded for profit corporation, or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board.

(b)    Compensation.

(i)Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Executive shall receive an annual base salary of $475,000 (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis. During the Employment Period, the Annual Base Salary shall be reviewed at least annually and shall be increased at any time and from time to time as shall be substantially consistent with increases in base salary generally awarded in the ordinary course of business to executives of the Company and its affiliated companies. Any increase in Annual Base Salary shall not serve to limit or reduce any other obligation to the Executive under this Agreement. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(ii)Annual Bonus. In addition to Annual Base Salary, the Executive may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Bonus (the “Annual Bonus”), in an amount comparable to the Annual Bonus award to other Company executives, taking into account the Executive’s position, responsibilities, and accomplishments with the Company, prorated for any period consisting of less than 12 full months.

(iii)Incentive, Savings and Retirement Plans. During the Employment Period, the Executive shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other similarly situated executive employees of the Company and its affiliated companies.

(iv)Welfare Benefit Plans. During the Employment Period, the Executive and/or the Executive’s family, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other similarly situated executive employees of the Company and its affiliated companies.

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(v)Expenses. During the Employment Period, the Executive shall be entitled to receive prompt reimbursement for all reasonable expenses incurred by the Executive in accordance with the policies, practices and procedures of the Company and its affiliated companies.

(vi)Vacation. During the Employment Period, the Executive shall be entitled to paid vacation in accordance with the plans, policies, programs and practices of the Company and its affiliated companies.

3.    Termination of Employment.

(a)    Death or Disability. The Executive’s employment shall terminate automatically upon the Executive’s death during the Employment Period. If the Company determines in good faith that the Disability of the Executive has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Executive written notice in accordance with Section 13(d) of this Agreement of its intention to terminate the Executive’s employment. In such event, the Executive’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Executive (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Executive shall not have returned to full-time performance of the Executive’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Executive from the Executive’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Executive or the Executive’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Executive incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Executive’s separation from service.

(b)    Cause. The Company may terminate the Executive’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean for the Company’s termination of the Executive’s employment for any of the following: (i) the Executive’s final conviction of a felony crime that enriched the Executive at the expense of the Company; provided, however, that after indictment, the Company may suspend the Executive from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a breach by the Executive of a fiduciary duty owed to the Company; (iii) a breach by the Executive of any of the covenants made by him in Sections 8 and 10 hereof; (iv) the willful and gross neglect by the Executive of the duties specifically and expressly required by this Agreement; or (v) the Executive’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Executive’s incapacity due to physical or mental illness or injury) for a period of 45 days after the Required Board Majority, as defined herein, has delivered to the Executive a written demand for substantial performance hereunder which specifically identifies the bases for the Required Board Majority’s determination that the Executive has not substantially performed his duties and responsibilities hereunder (that period being the

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“Grace Period”); provided, that for purposes of this clause (v), the Company shall not have Cause to terminate the Executive’s employment unless (A) at a meeting of the Board called and held following the Grace Period in the city in which the Company’s principal executive offices are located, of which the Executive was given not less than 10 days’ prior written notice and at which the Executive was afforded the opportunity to be represented by counsel, appear and be heard, the Required Board Majority shall adopt a written resolution which (1) sets forth the Required Board Majority’s determination that the failure of the Executive to substantially perform his duties and responsibilities hereunder has (except by reason of his incapacity due to physical or mental illness or injury) continued past the Grace Period and (2) specifically identifies the bases for that determination, and (B) the Company, at the written direction of the Required Board Majority, shall deliver to the Executive a Notice of Termination for Cause to which a copy of that resolution, certified as being true and correct by the secretary or any assistant secretary of the Company, is attached. “Required Board Majority” means at any time a majority of the members of the Board at that time which includes at least a majority of the Directors, each of whom has not been an employee of the Company or any subsidiary of the Company.

(c)    Good Reason; Other Terminations. The Executive’s employment may be terminated during the Employment Period by the Executive for Good Reason, or by the Executive other than for Good Reason. For purposes of this Agreement, “Good Reason” shall mean:

(i)    the assignment to the Executive of any duties materially inconsistent in any respect with the Executive’s position (including status, offices, titles and reporting requirements), authority, duties or responsibilities as contemplated by Section 2 of this Agreement, or any other action by the Company which results in a material diminution, in absolute terms, in such position, authority, duties or responsibilities, excluding for this purpose an isolated, insubstantial and inadvertent action not taken in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(ii)any material failure by the Company to comply with any of the provisions of this Agreement, other than an isolated, insubstantial and inadvertent failure not occurring in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(iii)any purported termination by the Company of the Executive’s employment otherwise than as expressly permitted by this Agreement; or

(iv)any failure by the Company to comply with and satisfy the requirements of Section 11 of this Agreement, provided that (A) the successor described in Section 11(c) has received, at least 10 days prior to the Date of Termination (as defined in subparagraph (e) below), written notice from the Company or the Executive of the requirements of such provision and (B) such failure to be in compliance and satisfy the requirements of Section 11 shall continue as of the Date of Termination.

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Notwithstanding any provision to the contrary, in order for any event(s) in subparagraph (i) through (iv) above to constitute “Good Reason” for purposes of this Agreement, (A) the Executive must notify the Company via Notice of Termination within 90 days following the initial occurrence of the event(s) that the Executive intends to terminate his employment with the Company because of the occurrence of Good Reason (which event must be described by the Executive in reasonable detail in the Notice of Termination) and (B) within 60 days after receiving such Notice of Termination from the Executive (the “Correction Period”), the Company must fail to reinstate the Executive to the position he was in, or otherwise cure the circumstances giving rise to Good Reason. Executive’s termination for Good Reason may occur only within 60 days following the expiration of the Correction Period.

(d)    Notice of Termination. Any termination by the Company for Cause, or by the Executive for Good Reason or without any reason, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 13 of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)    Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Executive’s employment is terminated by the Company for Cause, or by the Executive for Good Reason, the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Executive’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Executive of such termination, (iii) if the Executive’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Executive or the Disability Effective Date, as the case may be and (iv) if the Executive’s employment is terminated by the Executive other than for Good Reason, the date of termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

4.    Obligations of the Company upon Termination.

(a)    Disability, Good Reason; Other than for Cause or Death. If, during the Employment Period, (x) the Company shall terminate the Executive’s employment other than for Cause, including a termination by reason of Disability (but not by reason of death), or (y) the Executive shall terminate employment for Good Reason:

(i)    the Company shall pay or provide to or in respect of the Executive the following amounts and benefits:

A.    in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Executive’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Executive (together with any accrued interest or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any

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compensation for unused vacation time for which the Executive is eligible in accordance with the plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.    in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.    in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365, provided, however, that if the Executive is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.    effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Executive until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Executive’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Executive that such termination of employment or cessation of service as an officer (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Executive will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits received pursuant to this Agreement; provided, however, that the additional Change

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in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall provide, the Company shall continue benefits to the Executive and/or the Executive’s family at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Executive’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Executive a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Executive’s Annual Base Salary.

(b)    Death. If the Executive’s employment is terminated by reason of the Executive’s death during the Employment Period, this Agreement shall terminate without further obligations to the Executive’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Executive’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) providing the Executive with Company-paid term life insurance protection with a death benefit at least equal to the Supplemental Life Insurance Benefit (as defined in Exhibit A) multiplied by the Executive’s Annual Base Salary, with such coverage being supplemental to any other Company-paid group life insurance policy, (iii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Executive’s dependents determined as if the Executive’s employment had not terminated by reason of death, and (iv) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Executive until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)    Cause; Other than for Disability or Good Reason. If the Executive’s employment shall be terminated for Cause during the Employment Period, this Agreement shall terminate without further obligations to the Executive other than for Accrued Obligations. If the Executive terminates employment during the Employment Period, excluding a termination for any Disability or Good Reason, this Agreement shall terminate without further obligations to the Executive, other than for the payment of Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Executive in a lump sum in cash within 30 days of the Date of Termination.

5.    Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Executive’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Executive may qualify, nor shall anything herein limit or otherwise affect such rights as the Executive may have under any contract or agreement with the Company or any of its affiliated companies. Amounts which are vested benefits or which the Executive is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

6.    Full Settlement; Resolution of Disputes.

(a)    The Company’s obligation to make payments provided for in this Agreement and otherwise to perform its obligations hereunder shall not be affected by any setoff, counterclaim, recoupment, defense, mitigation or other claim, right or action which the Company may have against the Executive or others. In the event (i) prior to a Change in Control, the Executive’s employment is terminated for any reason other than Executive’s voluntary termination (with or without Good Reason), or (ii) within two years after a Change in Control, the Executive’s employment is terminated by the Company or the Executive for any reason, the Company agrees to pay promptly as incurred, to the full extent permitted by law, all legal fees and expenses which the Executive may reasonably incur as a result of any arbitration pursuant to Section 6(b) or a dispute regarding Executive’s eligibility for Severance Benefits pursuant to the Change in Control Severance Plan (regardless of the outcome thereof) initiated by the Company, the Executive or others regarding the validity or enforceability of, or liability under, any provision of this Agreement or the Change in Control Severance Plan or any guarantee of performance thereof (including as a result of any contest by the Executive about the amount of any such payment pursuant to this Agreement or the Change in Control Severance Plan), plus in each case interest on any delayed payment at the annual percentage rate which is three percentage points above the interest rate shown as the Prime Rate in the Money Rates column in the then most recently published edition of The Wall Street Journal (Southwest Edition), or, if such rate is not then so published on at least a weekly basis, the interest rate announced by Wells Fargo & Company (or its successor), from time to time, as its Base Rate (or prime lending rate), from the date those amounts were required to have been paid or reimbursed to the Employee until those amounts are finally and fully paid or reimbursed; provided, however, that in no event shall the amount of interest contracted for, charged or received hereunder exceed the maximum non-usurious amount of interest allowed by applicable law; provided, further, that if the Executive is not the prevailing party in any such arbitration or other dispute, then he shall, upon the conclusion thereof, repay to the Company any amounts that were previously advanced pursuant to this sentence by the Company as payment of legal fees and expenses.

(b)    Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by the arbitrator pursuant to this Section 6(b). The parties will each bear their own attorneys’ fees and costs in connection with any dispute, except in the circumstances in which the Company is required to advance the Executive’s attorneys’ fees in accordance with Section 6(a).

(c)    If, upon a termination within two years following a Change in Control, there shall be any dispute between the Company and the Executive concerning Executive’s eligibility for Severance Benefits under the Change in Control Severance Plan, then, unless and until there is a final determination by an arbitrator or a court of competent jurisdiction declaring that such termination was not eligible for Severance Benefits under the Change in Control Severance Plan, the Company shall pay all amounts, and provide all benefits, to the Executive and/or the Executive’s family or other beneficiaries, as the case may be, that the Company would be required to pay or provide pursuant to the Change in Control Severance Plan as though such termination was eligible for Severance Benefits under the Change in Control Severance Plan; provided, however, that the Company shall not be required to pay any disputed amounts pursuant to this paragraph except upon receipt of an undertaking by or on behalf of the Executive to repay all such amounts to which the Executive is ultimately adjudged by an arbitrator or a court of competent jurisdiction not to be so entitled.

(d)    Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Executive’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Executive with a Waiver and Release Agreement on or before the Executive’s Termination Date. The Executive must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Executive, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Executive may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Executive’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Executive’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Executive under the terms of the Agreement (but not the Accrued Obligations).

7.    Reserved.

8.    Confidential Information. The Executive shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Executive during the Executive’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Executive or representatives of the Executive in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Executive’s employment with the Company, the Executive shall not, without the prior written consent of the Company or as may otherwise be required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 8 constitute a basis for deferring or withholding any amounts otherwise payable to the Executive under this Agreement. Also, within 14 days of the termination of the Executive’s employment for any reason, the Executive shall return to Company all documents and other tangible items of or containing Company information which are in the Executive’s possession, custody or control, or with respect to equipment that is not Company property that is in the Executive’s possession, custody or control and which contains Confidential Information, the Executive shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Executive may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Executive from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

9.    Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

10.    Non-Compete and Non-Solicitation.

(a)    The Executive recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Executive, therefore, agrees that during the Employment Period and, if the Date of Termination occurs (i) by reason of the Executive terminating his employment for reasons other than Disability or Good Reason or (ii) in connection with or following a Change in Control, for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Executive has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render material services to any entity that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into, or take part in, or lend his name, counsel or material assistance to, any entity either as proprietor, principal, or owner of more than 5% of such entity, or act as an officer, executive, employee, consultant, advisor, agent, independent contractor to or for such entity, in either case with respect to an entity that would be directly competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area; provided, however, that the prohibitions set forth in this subparagraphs (i) and (ii) shall not apply to actions by the Executive with respect to any entity where the Executive (x) serves as an independent member of the board of directors and where, in respect of his position on the board, the Executive may provide knowledge, counsel and advice that may be informed by his mental impressions, experience and wisdom obtained while employed at the Company, which knowledge, counsel and advice shall not be considered Confidential Information so long as the Executive does not disclose any written, electronic or tangible Confidential Information, (y) is an investor in such an entity, which investment has previously been disclosed to the Company and approved by the Board of Directors of the Company or a committee thereof, or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, officer, employee, employer, advisor, significant stockholder, partner or in any other individual or representative capacity whatsoever, either for the Executive’s own benefit or for the benefit of any other person or entity either (A) directly hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies; provided, however, that the prohibitions set forth in this subparagraph (iii) shall not apply to (x) solicitations made by the Executive or any entity with which the Executive is associated, that are made to the public or the industry generally and not targeted at employees of the Company or its affiliated companies, (y) solicitations in response to any such person who contacts the Executive, or the entity with which the Executive is associated, on his or her own initiative without any prior prohibited solicitations or (z) solicitations implemented or initiated by any entity with which the Executive is associated without the knowledge or participation of the Executive (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 10 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest. For the avoidance of doubt, the provisions of this Section 10 will only apply in the event of (i) Executive’s voluntary termination of employment without Good Reason and not for reasons of Disability or (ii) Executive’s termination of employment in connection with or following a Change in Control.

(b)    In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 10 by the Executive, it is agreed that in the event of any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Executive prohibiting such breach or attempted or threatened breach by proving only the existence of such breach or attempted or threatened breach. If the provisions of this Section 10 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Executive and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

(c)    The covenants of the Executive set forth in this Section 10 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Executive shall not affect the validity of the provisions of this Section 10 or constitute a defense of the Executive in any suit or action brought by the Company to enforce any of the provisions of this Section 10 or seek any relief for the breach thereof by the Executive.

(d)    The Executive acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 10 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Executive as contemplated by Section 8, gives rise to the Company’s interest in restraining and prohibiting the Executive from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 10, and the Executive’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 10 is designed to enforce the Executive’s consideration (or return promises), including, without limitation, the Executive’s promise to not disclose Confidential Information under this Agreement.

11.    Successors.

(a)    This Agreement is personal to the Executive and without the prior written consent of the Company shall not be assignable by the Executive otherwise than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Executive’s heirs, executors and other legal representatives.

(b)    This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 11(c).

(c)    The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

12.    Section 409A.

(a)    This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Executive’s termination date, or if earlier, the Executive’s death.

(b)    Each payment under this Agreement is intended to be (i) excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii), or (ii) in the event any Gross Up Payment is made pursuant to Section 7(a) herein, in compliance with Section 409A, including, but not limited to, being paid pursuant to a fixed schedule or specified date pursuant to Treasury Regulation § 1.409A-3(i)(1)(v), and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(c)    All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Executive’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Executive’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

13.    Miscellaneous.

(a)    This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)    The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)    This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and other legal representatives. As applied to the Executive, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Executive without his written consent.

(d)    All notices and other communications hereunder shall be in writing and shall be given, if by the Executive to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Executive, either by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Executive:

David L. Pitts

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

Fax Number: (713) 328-1060

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)    The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(f)    Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)    The Executive’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Executive or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement; provided, however, that any claim for “Good Reason” termination must be raised within 90 days following the occurrence of the event giving rise to the right to terminate for “Good Reason” as set forth in Section 3(c) hereof.

(h)    Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and Executive. Contemporaneously with this Agreement, Executive shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Executive shall not be entitled to receive both the compensation and benefits provided by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Executive in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Executive than otherwise provided in the Change in Control Severance Plan. If Executive is terminated under circumstances that do not entitle him to the compensation and benefits provided by the Change in Control Severance Plan, Executive shall be paid the compensation and benefits provided by the applicable part of Section 4.

IN WITNESS WHEREOF, the Executive has hereunto set his hand and, pursuant to the authorization from its Board, the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     /s/ S.P. “Chip” Johnson IV        _______

Name: S.P. “Chip” Johnson IV                

Title: President and Chief Executive Officer

EXECUTIVE

/s/ David L. Pitts                    

Name: David L. Pitts

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EXHIBIT A TO AMENDED AND RESTATED EMPLOYMENT AGREEMENT DATED February 14, 2019

1. For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means 97%.

“Supplemental Life Insurance Benefit” means 1.9.

“Supplemental Severance Multiplier Percentage” means 90%.

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EXHIBIT B – FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”)described in that certain Amended and Restated Employment Agreement (the “Agreement”) effective as of February 14, 2019 between Carrizo Oil & Gas, Inc., a Texas Corporation (the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims

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arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of

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them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

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EX-10.26

Exhibit 10.26

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and Gerald A. Morton (the “Executive”) to be effective as of February 14, 2019 (the “Agreement Effective Date”), and amends and restates the Employment Agreement between the Parties dated as of June 5, 2009.

In entering into this Agreement, the Board of Directors of the Company (the “Board”) desires to provide the Executive with substantial incentives to continue to serve the Company as one of its senior executives performing at the highest level of leadership and stewardship, without distraction or concern over minimum compensation, benefits or tenure, to manage the Company’s future growth and development, and maximize the returns to the Company’s stockholders. Contemporaneously with the execution of this Agreement, the Company is adopting, and Executive is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to continue to employ the Executive and the Executive hereby agrees to remain in the employment of the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Executive, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)    Position and Duties. As of the Agreement Effective Date, the Executive shall continue as a full time employee and company officer with the title and responsibilities of General Counsel and Vice President - Business Development and during the Employment Period, excluding any periods of vacation and sick leave to which the Executive is entitled, the Executive agrees to devote full attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Executive hereunder, to use the Executive’s reasonable best efforts to perform faithfully and efficiently such responsibilities. During the Employment Period, it shall not be a violation of this Agreement for the Executive to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the Executive’s responsibilities as an employee of the Company in accordance with

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this Agreement; provided that the Executive may not serve on the board of a publicly traded for profit corporation, or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board.

(b)    Compensation.

(i)    Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Executive shall receive an annual base salary of $395,000 (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis. During the Employment Period, the Annual Base Salary shall be reviewed at least annually and shall be increased at any time and from time to time as shall be substantially consistent with increases in base salary generally awarded in the ordinary course of business to executives of the Company and its affiliated companies. Any increase in Annual Base Salary shall not serve to limit or reduce any other obligation to the Executive under this Agreement. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(ii)    Annual Bonus. In addition to Annual Base Salary, the Executive may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Bonus (the “Annual Bonus”), in an amount comparable to the Annual Bonus award to other Company executives, taking into account the Executive’s position, responsibilities, and accomplishments with the Company, prorated for any period consisting of less than 12 full months.

(iii)    Incentive, Savings and Retirement Plans. During the Employment Period, the Executive shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other similarly situated executive employees of the Company and its affiliated companies.

(iv)    Welfare Benefit Plans. During the Employment Period, the Executive and/or the Executive’s family, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other similarly situated executive employees of the Company and its affiliated companies.

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(v)    Expenses. During the Employment Period, the Executive shall be entitled to receive prompt reimbursement for all reasonable expenses incurred by the Executive in accordance with the policies, practices and procedures of the Company and its affiliated companies.

(vi)    Vacation. During the Employment Period, the Executive shall be entitled to paid vacation in accordance with the plans, policies, programs and practices of the Company and its affiliated companies.

3.    Termination of Employment.

(a)    Death or Disability. The Executive’s employment shall terminate automatically upon the Executive’s death during the Employment Period. If the Company determines in good faith that the Disability of the Executive has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Executive written notice in accordance with Section 13(d) of this Agreement of its intention to terminate the Executive’s employment. In such event, the Executive’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Executive (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Executive shall not have returned to full-time performance of the Executive’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Executive from the Executive’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Executive or the Executive’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Executive incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Executive’s separation from service.

(b)    Cause. The Company may terminate the Executive’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean for the Company’s termination of the Executive’s employment for any of the following: (i) the Executive’s final conviction of a felony crime that enriched the Executive at the expense of the Company; provided, however, that after indictment, the Company may suspend the Executive from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a breach by the Executive of a fiduciary duty owed to the Company; (iii) a breach by the Executive of any of the covenants made by him in Sections 8 and 10 hereof; (iv) the willful and gross neglect by the Executive of the duties specifically and expressly required by this Agreement; or (v) the Executive’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Executive’s incapacity due to physical or mental illness or injury) for a period of 45 days after the Required Board Majority, as defined herein, has delivered to the Executive a written demand for substantial performance hereunder which specifically identifies the bases for the Required Board Majority’s determination that the Executive has not substantially performed his duties and responsibilities hereunder (that period being the

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“Grace Period”); provided, that for purposes of this clause (v), the Company shall not have Cause to terminate the Executive’s employment unless (A) at a meeting of the Board called and held following the Grace Period in the city in which the Company’s principal executive offices are located, of which the Executive was given not less than 10 days’ prior written notice and at which the Executive was afforded the opportunity to be represented by counsel, appear and be heard, the Required Board Majority shall adopt a written resolution which (1) sets forth the Required Board Majority’s determination that the failure of the Executive to substantially perform his duties and responsibilities hereunder has (except by reason of his incapacity due to physical or mental illness or injury) continued past the Grace Period and (2) specifically identifies the bases for that determination, and (B) the Company, at the written direction of the Required Board Majority, shall deliver to the Executive a Notice of Termination for Cause to which a copy of that resolution, certified as being true and correct by the secretary or any assistant secretary of the Company, is attached. “Required Board Majority” means at any time a majority of the members of the Board at that time which includes at least a majority of the Directors, each of whom has not been an employee of the Company or any subsidiary of the Company.

(c)    Good Reason; Other Terminations. The Executive’s employment may be terminated during the Employment Period by the Executive for Good Reason, or by the Executive other than for Good Reason. For purposes of this Agreement, “Good Reason” shall mean:

(i)    the assignment to the Executive of any duties materially inconsistent in any respect with the Executive’s position (including status, offices, titles and reporting requirements), authority, duties or responsibilities as contemplated by Section 2 of this Agreement, or any other action by the Company which results in a material diminution, in absolute terms, in such position, authority, duties or responsibilities, excluding for this purpose an isolated, insubstantial and inadvertent action not taken in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(ii)    any material failure by the Company to comply with any of the provisions of this Agreement, other than an isolated, insubstantial and inadvertent failure not occurring in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(iii)    any purported termination by the Company of the Executive’s employment otherwise than as expressly permitted by this Agreement; or

(iv)    any failure by the Company to comply with and satisfy the requirements of Section 11 of this Agreement, provided that (A) the successor described in Section 11(c) has received, at least 10 days prior to the Date of Termination (as defined in subparagraph (e) below), written notice from the Company or the Executive of the requirements of such provision and (B) such failure to be in compliance and satisfy the requirements of Section 11 shall continue as of the Date of Termination.

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Notwithstanding any provision to the contrary, in order for any event(s) in subparagraph (i) through (iv) above to constitute “Good Reason” for purposes of this Agreement, (A) the Executive must notify the Company via Notice of Termination within 90 days following the initial occurrence of the event(s) that the Executive intends to terminate his employment with the Company because of the occurrence of Good Reason (which event must be described by the Executive in reasonable detail in the Notice of Termination) and (B) within 60 days after receiving such Notice of Termination from the Executive (the “Correction Period”), the Company must fail to reinstate the Executive to the position he was in, or otherwise cure the circumstances giving rise to Good Reason. Executive’s termination for Good Reason may occur only within 60 days following the expiration of the Correction Period.

(d)    Notice of Termination. Any termination by the Company for Cause, or by the Executive for Good Reason or without any reason, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 13 of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)    Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Executive’s employment is terminated by the Company for Cause, or by the Executive for Good Reason, the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Executive’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Executive of such termination, (iii) if the Executive’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Executive or the Disability Effective Date, as the case may be and (iv) if the Executive’s employment is terminated by the Executive other than for Good Reason, the date of termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

4.    Obligations of the Company upon Termination.

(a)    Disability, Good Reason; Other than for Cause or Death. If, during the Employment Period, (x) the Company shall terminate the Executive’s employment other than for Cause, including a termination by reason of Disability (but not by reason of death), or (y) the Executive shall terminate employment for Good Reason:

(i)    the Company shall pay or provide to or in respect of the Executive the following amounts and benefits:

A.    in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Executive’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Executive (together with any accrued interest or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any

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compensation for unused vacation time for which the Executive is eligible in accordance with the plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.    in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.    in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365, provided, however, that if the Executive is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.    effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Executive until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Executive’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Executive that such termination of employment or cessation of service as an officer (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Executive will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits received pursuant to this Agreement; provided, however, that the additional Change

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in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)    for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall provide, the Company shall continue benefits to the Executive and/or the Executive’s family at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Executive’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Executive a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Executive’s Annual Base Salary.

(b)    Death. If the Executive’s employment is terminated by reason of the Executive’s death during the Employment Period, this Agreement shall terminate without further obligations to the Executive’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Executive’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) providing the Executive with Company-paid term life insurance protection with a death benefit at least equal to the Supplemental Life Insurance Benefit (as defined in Exhibit A) multiplied by the Executive’s Annual Base Salary, with such coverage being supplemental to any other Company-paid group life insurance policy, (iii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Executive’s dependents determined as if the Executive’s employment had not terminated by reason of death, and (iv) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Executive until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)    Cause; Other than for Disability or Good Reason. If the Executive’s employment shall be terminated for Cause during the Employment Period, this Agreement shall terminate without further obligations to the Executive other than for Accrued Obligations. If the Executive terminates employment during the Employment Period, excluding a termination for any Disability or Good Reason, this Agreement shall terminate without further obligations to the Executive, other than for the payment of Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Executive in a lump sum in cash within 30 days of the Date of Termination.

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5.    Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Executive’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Executive may qualify, nor shall anything herein limit or otherwise affect such rights as the Executive may have under any contract or agreement with the Company or any of its affiliated companies. Amounts which are vested benefits or which the Executive is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

6.    Full Settlement; Resolution of Disputes.

(a)    The Company’s obligation to make payments provided for in this Agreement and otherwise to perform its obligations hereunder shall not be affected by any setoff, counterclaim, recoupment, defense, mitigation or other claim, right or action which the Company may have against the Executive or others. In the event (i) prior to a Change in Control, the Executive’s employment is terminated for any reason other than Executive’s voluntary termination (with or without Good Reason), or (ii) within two years after a Change in Control, the Executive’s employment is terminated by the Company or the Executive for any reason, the Company agrees to pay promptly as incurred, to the full extent permitted by law, all legal fees and expenses which the Executive may reasonably incur as a result of any arbitration pursuant to Section 6(b) or a dispute regarding Executive’s eligibility for Severance Benefits pursuant to the Change in Control Severance Plan (regardless of the outcome thereof) initiated by the Company, the Executive or others regarding the validity or enforceability of, or liability under, any provision of this Agreement or the Change in Control Severance Plan or any guarantee of performance thereof (including as a result of any contest by the Executive about the amount of any such payment pursuant to this Agreement or the Change in Control Severance Plan), plus in each case interest on any delayed payment at the annual percentage rate which is three percentage points above the interest rate shown as the Prime Rate in the Money Rates column in the then most recently published edition of The Wall Street Journal (Southwest Edition), or, if such rate is not then so published on at least a weekly basis, the interest rate announced by Wells Fargo & Company (or its successor), from time to time, as its Base Rate (or prime lending rate), from the date those amounts were required to have been paid or reimbursed to the Employee until those amounts are finally and fully paid or reimbursed; provided, however, that in no event shall the amount of interest contracted for, charged or received hereunder exceed the maximum non-usurious amount of interest allowed by applicable law; provided, further, that if the Executive is not the prevailing party in any such arbitration or other dispute, then he shall, upon the conclusion thereof, repay to the Company any amounts that were previously advanced pursuant to this sentence by the Company as payment of legal fees and expenses.

(b)    Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award

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rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by the arbitrator pursuant to this Section 6(b). The parties will each bear their own attorneys’ fees and costs in connection with any dispute, except in the circumstances in which the Company is required to advance the Executive’s attorneys’ fees in accordance with Section 6(a).

(c)    If, upon a termination within two years following a Change in Control, there shall be any dispute between the Company and the Executive concerning Executive’s eligibility for Severance Benefits under the Change in Control Severance Plan, then, unless and until there is a final determination by an arbitrator or a court of competent jurisdiction declaring that such termination was not eligible for Severance Benefits under the Change in Control Severance Plan, the Company shall pay all amounts, and provide all benefits, to the Executive and/or the Executive’s family or other beneficiaries, as the case may be, that the Company would be required to pay or provide pursuant to the Change in Control Severance Plan as though such termination was eligible for Severance Benefits under the Change in Control Severance Plan; provided, however, that the Company shall not be required to pay any disputed amounts pursuant to this paragraph except upon receipt of an undertaking by or on behalf of the Executive to repay all such amounts to which the Executive is ultimately adjudged by an arbitrator or a court of competent jurisdiction not to be so entitled.

(d)    Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Executive’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Executive with a Waiver and Release Agreement on or before the Executive’s Termination Date. The Executive must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Executive, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Executive may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Executive’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Executive’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Executive under the terms of the Agreement (but not the Accrued Obligations).

7.    Reserved.

8.    Confidential Information. The Executive shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the

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Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Executive during the Executive’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Executive or representatives of the Executive in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Executive’s employment with the Company, the Executive shall not, without the prior written consent of the Company or as may otherwise be required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 8 constitute a basis for deferring or withholding any amounts otherwise payable to the Executive under this Agreement. Also, within 14 days of the termination of the Executive’s employment for any reason, the Executive shall return to Company all documents and other tangible items of or containing Company information which are in the Executive’s possession, custody or control, or with respect to equipment that is not Company property that is in the Executive’s possession, custody or control and which contains Confidential Information, the Executive shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Executive may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Executive from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

9.    Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

10.    Non-Compete and Non-Solicitation.

(a)    The Executive recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Executive, therefore, agrees that during the Employment Period and, if the Date of Termination occurs (i) by reason of the Executive terminating his employment for reasons other than Disability or Good Reason or (ii) in connection with or following a Change in Control, for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Executive has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render material services to any entity that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into, or take part in, or lend his name, counsel or material

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assistance to, any entity either as proprietor, principal, or owner of more than 5% of such entity, or act as an officer, executive, employee, consultant, advisor, agent, independent contractor to or for such entity, in either case with respect to an entity that would be directly competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area; provided, however, that the prohibitions set forth in this subparagraphs (i) and (ii) shall not apply to actions by the Executive with respect to any entity where the Executive (x) serves as an independent member of the board of directors and where, in respect of his position on the board, the Executive may provide knowledge, counsel and advice that may be informed by his mental impressions, experience and wisdom obtained while employed at the Company, which knowledge, counsel and advice shall not be considered Confidential Information so long as the Executive does not disclose any written, electronic or tangible Confidential Information, (y) is an investor in such an entity, which investment has previously been disclosed to the Company and approved by the Board of Directors of the Company or a committee thereof, or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, officer, employee, employer, advisor, significant stockholder, partner or in any other individual or representative capacity whatsoever, either for the Executive’s own benefit or for the benefit of any other person or entity either (A) directly hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies; provided, however, that the prohibitions set forth in this subparagraph (iii) shall not apply to (x) solicitations made by the Executive or any entity with which the Executive is associated, that are made to the public or the industry generally and not targeted at employees of the Company or its affiliated companies, (y) solicitations in response to any such person who contacts the Executive, or the entity with which the Executive is associated, on his or her own initiative without any prior prohibited solicitations or (z) solicitations implemented or initiated by any entity with which the Executive is associated without the knowledge or participation of the Executive (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 10 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest. For the avoidance of doubt, the provisions of this Section 10 will only apply in the event of (i) Executive’s voluntary termination of employment without Good Reason and not for reasons of Disability or (ii) Executive’s termination of employment in connection with or following a Change in Control. Notwithstanding the foregoing, the Executive may provide professional legal services either as in-house or outside counsel to an entity that competes with the Company, provided that (i) such services do not violate the Executive’s ethical and legal duties to maintain confidential communications and client confidences of the Company and (ii) the Executive does not provide legal services to any person or entity on a matter that is substantially related to his provision of legal services to the Company.

(b)    In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 10 by the Executive, it is agreed that in the event of

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any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Executive prohibiting such breach or attempted or threatened breach by proving only the existence of such breach or attempted or threatened breach. If the provisions of this Section 10 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Executive and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

(c)    The covenants of the Executive set forth in this Section 10 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Executive shall not affect the validity of the provisions of this Section 10 or constitute a defense of the Executive in any suit or action brought by the Company to enforce any of the provisions of this Section 10 or seek any relief for the breach thereof by the Executive.

(d)    The Executive acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 10 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Executive as contemplated by Section 8, gives rise to the Company’s interest in restraining and prohibiting the Executive from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 10, and the Executive’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 10 is designed to enforce the Executive’s consideration (or return promises), including, without limitation, the Executive’s promise to not disclose Confidential Information under this Agreement.

11.    Successors.

(a)    This Agreement is personal to the Executive and without the prior written consent of the Company shall not be assignable by the Executive otherwise than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Executive’s heirs, executors and other legal representatives.

(b)    This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 11(c).

(c)    The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined

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and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

12.    Section 409A.

(a)    This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Executive’s termination date, or if earlier, the Executive’s death.

(b)    Each payment under this Agreement is intended to be (i) excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii), or (ii) in the event any Gross Up Payment is made pursuant to Section 7(a) herein, in compliance with Section 409A, including, but not limited to, being paid pursuant to a fixed schedule or specified date pursuant to Treasury Regulation § 1.409A-3(i)(1)(v), and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(c)    All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Executive’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Executive’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

13.    Miscellaneous.

(a)    This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)    The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)    This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and

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other legal representatives. As applied to the Executive, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Executive without his written consent.

(d)    All notices and other communications hereunder shall be in writing and shall be given, if by the Executive to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Executive, either by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Executive:

Gerry Morton

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

Fax Number: (713) 328-1060

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)    The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(f)    Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)    The Executive’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Executive or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement; provided, however, that any claim for “Good Reason” termination must be raised within 90 days following the occurrence of the event giving rise to the right to terminate for “Good Reason” as set forth in Section 3(c) hereof.

(h)    Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and Executive. Contemporaneously with this Agreement,

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Executive shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Executive shall not be entitled to receive both the compensation and benefits provided by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Executive in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Executive than otherwise provided in the Change in Control Severance Plan. If Executive is terminated under circumstances that do not entitle him to the compensation and benefits provided by the Change in Control Severance Plan, Executive shall be paid the compensation and benefits provided by the applicable part of Section 4.

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IN WITNESS WHEREOF, the Executive has hereunto set his hand and, pursuant to the authorization from its Board, the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     /s/ David L. Pitts            _______

Name: David L. Pitts                

Title: Vice President and Chief Financial Officer     

EXECUTIVE

/s/ Gerald A. Morton                

Name: Gerald A. Morton

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EXHIBIT A TO AMENDED AND RESTATED EMPLOYMENT AGREEMENT DATED February 14, 2019

1. For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means 97%.

“Supplemental Life Insurance Benefit” means 1.9.

“Supplemental Severance Multiplier Percentage” means 90%.

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EXHIBIT B – FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”) described in that certain Amended and Restated Employment Agreement (the “Agreement”) effective as of February 14, 2019 between Carrizo Oil & Gas, Inc., a Texas Corporation (the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims

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arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of

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them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

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EX-10.27

Exhibit 10.27

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This Amended and Restated Employment Agreement (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and Richard H. Smith (the “Executive”) to be effective as of February 14, 2019 (the “Agreement Effective Date”), and amends and restates the Employment Agreement between the Parties dated as of June 5, 2009.

In entering into this Agreement, the Board of Directors of the Company (the “Board”) desires to provide the Executive with substantial incentives to continue to serve the Company as one of its senior executives performing at the highest level of leadership and stewardship, without distraction or concern over minimum compensation, benefits or tenure, to manage the Company’s future growth and development, and maximize the returns to the Company’s stockholders. Contemporaneously with the execution of this Agreement, the Company is adopting, and Executive is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to continue to employ the Executive and the Executive hereby agrees to remain in the employment of the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Executive, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)    Position and Duties. As of the Agreement Effective Date, the Executive shall continue as a full time employee and company officer with the title and responsibilities of Vice President of Land and during the Employment Period, excluding any periods of vacation and sick leave to which the Executive is entitled, the Executive agrees to devote full attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Executive hereunder, to use the Executive’s reasonable best efforts to perform faithfully and efficiently such responsibilities. During the Employment Period, it shall not be a violation of this Agreement for the Executive to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the Executive’s responsibilities as an employee of the Company in accordance with this Agreement; provided that the Executive

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may not serve on the board of a publicly traded for profit corporation, or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board.

(b)    Compensation.

(i)    Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Executive shall receive an annual base salary of $357,000 (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis. During the Employment Period, the Annual Base Salary shall be reviewed at least annually and shall be increased at any time and from time to time as shall be substantially consistent with increases in base salary generally awarded in the ordinary course of business to executives of the Company and its affiliated companies. Any increase in Annual Base Salary shall not serve to limit or reduce any other obligation to the Executive under this Agreement. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(ii)    Annual Bonus. In addition to Annual Base Salary, the Executive may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Bonus (the “Annual Bonus”), in an amount comparable to the Annual Bonus award to other Company executives, taking into account the Executive’s position, responsibilities, and accomplishments with the Company, prorated for any period consisting of less than 12 full months.

(iii)    Incentive, Savings and Retirement Plans. During the Employment Period, the Executive shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other similarly situated executive employees of the Company and its affiliated companies.

(iv)    Welfare Benefit Plans. During the Employment Period, the Executive and/or the Executive’s family, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other similarly situated executive employees of the Company and its affiliated companies.

(v)    Expenses. During the Employment Period, the Executive shall be entitled to receive prompt reimbursement for all reasonable expenses incurred by

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the Executive in accordance with the policies, practices and procedures of the Company and its affiliated companies.

(vi)    Vacation. During the Employment Period, the Executive shall be entitled to paid vacation in accordance with the plans, policies, programs and practices of the Company and its affiliated companies.

3.    Termination of Employment.

(a)    Death or Disability. The Executive’s employment shall terminate automatically upon the Executive’s death during the Employment Period. If the Company determines in good faith that the Disability of the Executive has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Executive written notice in accordance with Section 13(d) of this Agreement of its intention to terminate the Executive’s employment. In such event, the Executive’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Executive (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Executive shall not have returned to full-time performance of the Executive’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Executive from the Executive’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Executive or the Executive’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Executive incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Executive’s separation from service.

(b)    Cause. The Company may terminate the Executive’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean for the Company’s termination of the Executive’s employment for any of the following: (i) the Executive’s final conviction of a felony crime that enriched the Executive at the expense of the Company; provided, however, that after indictment, the Company may suspend the Executive from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a breach by the Executive of a fiduciary duty owed to the Company; (iii) a breach by the Executive of any of the covenants made by him in Sections 8 and 10 hereof; (iv) the willful and gross neglect by the Executive of the duties specifically and expressly required by this Agreement; or (v) the Executive’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Executive’s incapacity due to physical or mental illness or injury) for a period of 45 days after the Required Board Majority, as defined herein, has delivered to the Executive a written demand for substantial performance hereunder which specifically identifies the bases for the Required Board Majority’s determination that the Executive has not substantially performed his duties and responsibilities hereunder (that period being the “Grace Period”); provided, that for purposes of this clause (v), the Company shall not have Cause to terminate the Executive’s employment unless (A) at a meeting of the Board called and held

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following the Grace Period in the city in which the Company’s principal executive offices are located, of which the Executive was given not less than 10 days’ prior written notice and at which the Executive was afforded the opportunity to be represented by counsel, appear and be heard, the Required Board Majority shall adopt a written resolution which (1) sets forth the Required Board Majority’s determination that the failure of the Executive to substantially perform his duties and responsibilities hereunder has (except by reason of his incapacity due to physical or mental illness or injury) continued past the Grace Period and (2) specifically identifies the bases for that determination, and (B) the Company, at the written direction of the Required Board Majority, shall deliver to the Executive a Notice of Termination for Cause to which a copy of that resolution, certified as being true and correct by the secretary or any assistant secretary of the Company, is attached. “Required Board Majority” means at any time a majority of the members of the Board at that time which includes at least a majority of the Directors, each of whom has not been an employee of the Company or any subsidiary of the Company.

(c)    Good Reason; Other Terminations. The Executive’s employment may be terminated during the Employment Period by the Executive for Good Reason, or by the Executive other than for Good Reason. For purposes of this Agreement, “Good Reason” shall mean:

(i)    the assignment to the Executive of any duties materially inconsistent in any respect with the Executive’s position (including status, offices, titles and reporting requirements), authority, duties or responsibilities as contemplated by Section 2 of this Agreement, or any other action by the Company which results in a material diminution, in absolute terms, in such position, authority, duties or responsibilities, excluding for this purpose an isolated, insubstantial and inadvertent action not taken in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(ii)    any material failure by the Company to comply with any of the provisions of this Agreement, other than an isolated, insubstantial and inadvertent failure not occurring in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Executive;

(iii)    any purported termination by the Company of the Executive’s employment otherwise than as expressly permitted by this Agreement; or

(iv)    any failure by the Company to comply with and satisfy the requirements of Section 11 of this Agreement, provided that (A) the successor described in Section 11(c) has received, at least 10 days prior to the Date of Termination (as defined in subparagraph (e) below), written notice from the Company or the Executive of the requirements of such provision and (B) such failure to be in compliance and satisfy the requirements of Section 11 shall continue as of the Date of Termination.

Notwithstanding any provision to the contrary, in order for any event(s) in subparagraph (i) through (iv) above to constitute “Good Reason” for purposes of this Agreement, (A) the Executive must notify the Company via Notice of Termination within 90 days following the initial occurrence of

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the event(s) that the Executive intends to terminate his employment with the Company because of the occurrence of Good Reason (which event must be described by the Executive in reasonable detail in the Notice of Termination) and (B) within 60 days after receiving such Notice of Termination from the Executive (the “Correction Period”), the Company must fail to reinstate the Executive to the position he was in, or otherwise cure the circumstances giving rise to Good Reason. Executive’s termination for Good Reason may occur only within 60 days following the expiration of the Correction Period.

(d)    Notice of Termination. Any termination by the Company for Cause, or by the Executive for Good Reason or without any reason, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 13 of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)    Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Executive’s employment is terminated by the Company for Cause, or by the Executive for Good Reason, the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Executive’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Executive of such termination, (iii) if the Executive’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Executive or the Disability Effective Date, as the case may be and (iv) if the Executive’s employment is terminated by the Executive other than for Good Reason, the date of termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

4.    Obligations of the Company upon Termination.

(a)    Disability, Good Reason; Other than for Cause or Death. If, during the Employment Period, (x) the Company shall terminate the Executive’s employment other than for Cause, including a termination by reason of Disability (but not by reason of death), or (y) the Executive shall terminate employment for Good Reason:

(i)    the Company shall pay or provide to or in respect of the Executive the following amounts and benefits:

A.    in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Executive’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Executive (together with any accrued interest or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any compensation for unused vacation time for which the Executive is eligible in accordance with the plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not

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theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.    in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.    in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365, provided, however, that if the Executive is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.    effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Executive until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Executive’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Executive that such termination of employment or cessation of service as an officer (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Executive will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits received pursuant to this Agreement; provided, however, that the additional Change in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)    for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall

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provide, the Company shall continue benefits to the Executive and/or the Executive’s family at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Executive’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Executive a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Executive’s Annual Base Salary.

(b)    Death. If the Executive’s employment is terminated by reason of the Executive’s death during the Employment Period, this Agreement shall terminate without further obligations to the Executive’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Executive’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) providing the Executive with Company-paid term life insurance protection with a death benefit at least equal to the Supplemental Life Insurance Benefit (as defined in Exhibit A) multiplied by the Executive’s Annual Base Salary, with such coverage being supplemental to any other Company-paid group life insurance policy, (iii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Executive’s dependents determined as if the Executive’s employment had not terminated by reason of death, and (iv) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Executive until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Executive had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)    Cause; Other than for Disability or Good Reason. If the Executive’s employment shall be terminated for Cause during the Employment Period, this Agreement shall terminate without further obligations to the Executive other than for Accrued Obligations. If the Executive terminates employment during the Employment Period, excluding a termination for any Disability or Good Reason, this Agreement shall terminate without further obligations to the Executive, other than for the payment of Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Executive in a lump sum in cash within 30 days of the Date of Termination.

5.    Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Executive’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Executive may qualify, nor shall anything herein limit or otherwise affect such rights as the Executive may have under any contract or agreement with the Company or any of its

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affiliated companies. Amounts which are vested benefits or which the Executive is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

6.    Full Settlement; Resolution of Disputes.

(a)    The Company’s obligation to make payments provided for in this Agreement and otherwise to perform its obligations hereunder shall not be affected by any setoff, counterclaim, recoupment, defense, mitigation or other claim, right or action which the Company may have against the Executive or others. In the event (i) prior to a Change in Control, the Executive’s employment is terminated for any reason other than Executive’s voluntary termination (with or without Good Reason), or (ii) within two years after a Change in Control, the Executive’s employment is terminated by the Company or the Executive for any reason, the Company agrees to pay promptly as incurred, to the full extent permitted by law, all legal fees and expenses which the Executive may reasonably incur as a result of any arbitration pursuant to Section 6(b) or a dispute regarding Executive’s eligibility for Severance Benefits pursuant to the Change in Control Severance Plan (regardless of the outcome thereof) initiated by the Company, the Executive or others regarding the validity or enforceability of, or liability under, any provision of this Agreement or the Change in Control Severance Plan or any guarantee of performance thereof (including as a result of any contest by the Executive about the amount of any such payment pursuant to this Agreement or the Change in Control Severance Plan), plus in each case interest on any delayed payment at the annual percentage rate which is three percentage points above the interest rate shown as the Prime Rate in the Money Rates column in the then most recently published edition of The Wall Street Journal (Southwest Edition), or, if such rate is not then so published on at least a weekly basis, the interest rate announced by Wells Fargo & Company (or its successor), from time to time, as its Base Rate (or prime lending rate), from the date those amounts were required to have been paid or reimbursed to the Employee until those amounts are finally and fully paid or reimbursed; provided, however, that in no event shall the amount of interest contracted for, charged or received hereunder exceed the maximum non-usurious amount of interest allowed by applicable law; provided, further, that if the Executive is not the prevailing party in any such arbitration or other dispute, then he shall, upon the conclusion thereof, repay to the Company any amounts that were previously advanced pursuant to this sentence by the Company as payment of legal fees and expenses.

(b)    Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by

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the arbitrator pursuant to this Section 6(b). The parties will each bear their own attorneys’ fees and costs in connection with any dispute, except in the circumstances in which the Company is required to advance the Executive’s attorneys’ fees in accordance with Section 6(a).

(c)    If, upon a termination within two years following a Change in Control, there shall be any dispute between the Company and the Executive concerning Executive’s eligibility for Severance Benefits under the Change in Control Severance Plan, then, unless and until there is a final determination by an arbitrator or a court of competent jurisdiction declaring that such termination was not eligible for Severance Benefits under the Change in Control Severance Plan, the Company shall pay all amounts, and provide all benefits, to the Executive and/or the Executive’s family or other beneficiaries, as the case may be, that the Company would be required to pay or provide pursuant to the Change in Control Severance Plan as though such termination was eligible for Severance Benefits under the Change in Control Severance Plan; provided, however, that the Company shall not be required to pay any disputed amounts pursuant to this paragraph except upon receipt of an undertaking by or on behalf of the Executive to repay all such amounts to which the Executive is ultimately adjudged by an arbitrator or a court of competent jurisdiction not to be so entitled.

(d)    Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Executive’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Executive with a Waiver and Release Agreement on or before the Executive’s Termination Date. The Executive must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Executive, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Executive may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Executive’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Executive’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Executive under the terms of the Agreement (but not the Accrued Obligations).

7.    Reserved.

8.    Confidential Information. The Executive shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Executive during the Executive’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Executive or representatives of the Executive in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Executive’s employment with the Company,

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the Executive shall not, without the prior written consent of the Company or as may otherwise be required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 8 constitute a basis for deferring or withholding any amounts otherwise payable to the Executive under this Agreement. Also, within 14 days of the termination of the Executive’s employment for any reason, the Executive shall return to Company all documents and other tangible items of or containing Company information which are in the Executive’s possession, custody or control, or with respect to equipment that is not Company property that is in the Executive’s possession, custody or control and which contains Confidential Information, the Executive shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Executive may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Executive from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

9.    Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

10.    Non-Compete and Non-Solicitation.

(a)    The Executive recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Executive, therefore, agrees that during the Employment Period and, if the Date of Termination occurs (i) by reason of the Executive terminating his employment for reasons other than Disability or Good Reason or (ii) in connection with or following a Change in Control, for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Executive has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render material services to any entity that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into, or take part in, or lend his name, counsel or material assistance to, any entity either as proprietor, principal, or owner of more than 5% of such entity, or act as an officer, executive, employee, consultant, advisor, agent, independent contractor to or for such entity, in either case with respect to an entity that would be directly competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area; provided, however, that the prohibitions set forth in this subparagraphs (i) and (ii) shall not apply

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to actions by the Executive with respect to any entity where the Executive (x) serves as an independent member of the board of directors and where, in respect of his position on the board, the Executive may provide knowledge, counsel and advice that may be informed by his mental impressions, experience and wisdom obtained while employed at the Company, which knowledge, counsel and advice shall not be considered Confidential Information so long as the Executive does not disclose any written, electronic or tangible Confidential Information, (y) is an investor in such an entity, which investment has previously been disclosed to the Company and approved by the Board of Directors of the Company or a committee thereof, or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, officer, employee, employer, advisor, significant stockholder, partner or in any other individual or representative capacity whatsoever, either for the Executive’s own benefit or for the benefit of any other person or entity either (A) directly hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies; provided, however, that the prohibitions set forth in this subparagraph (iii) shall not apply to (x) solicitations made by the Executive or any entity with which the Executive is associated, that are made to the public or the industry generally and not targeted at employees of the Company or its affiliated companies, (y) solicitations in response to any such person who contacts the Executive, or the entity with which the Executive is associated, on his or her own initiative without any prior prohibited solicitations or (z) solicitations implemented or initiated by any entity with which the Executive is associated without the knowledge or participation of the Executive (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 10 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest. For the avoidance of doubt, the provisions of this Section 10 will only apply in the event of (i) Executive’s voluntary termination of employment without Good Reason and not for reasons of Disability or (ii) Executive’s termination of employment in connection with or following a Change in Control.

(b)    In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 10 by the Executive, it is agreed that in the event of any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Executive prohibiting such breach or attempted or threatened breach by proving only the existence of such breach or attempted or threatened breach. If the provisions of this Section 10 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Executive and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

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(c)    The covenants of the Executive set forth in this Section 10 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Executive shall not affect the validity of the provisions of this Section 10 or constitute a defense of the Executive in any suit or action brought by the Company to enforce any of the provisions of this Section 10 or seek any relief for the breach thereof by the Executive.

(d)    The Executive acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 10 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Executive as contemplated by Section 8, gives rise to the Company’s interest in restraining and prohibiting the Executive from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 10, and the Executive’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 10 is designed to enforce the Executive’s consideration (or return promises), including, without limitation, the Executive’s promise to not disclose Confidential Information under this Agreement.

11.    Successors.

(a)    This Agreement is personal to the Executive and without the prior written consent of the Company shall not be assignable by the Executive otherwise than by will or the laws of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Executive’s heirs, executors and other legal representatives.

(b)    This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 11(c).

(c)    The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

12.    Section 409A.

(a)    This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period

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under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Executive’s termination date, or if earlier, the Executive’s death.

(b)    Each payment under this Agreement is intended to be (i) excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii), or (ii) in the event any Gross Up Payment is made pursuant to Section 7(a) herein, in compliance with Section 409A, including, but not limited to, being paid pursuant to a fixed schedule or specified date pursuant to Treasury Regulation § 1.409A-3(i)(1)(v), and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(c)    All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Executive’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Executive’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

13.    Miscellaneous.

(a)    This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)    The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)    This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and other legal representatives. As applied to the Executive, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Executive without his written consent.

(d)    All notices and other communications hereunder shall be in writing and shall be given, if by the Executive to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Executive, either by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

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If to the Executive:

Richard H. Smith

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

Fax Number: (713) 328-1060

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)    The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

(f)    Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)    The Executive’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Executive or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement; provided, however, that any claim for “Good Reason” termination must be raised within 90 days following the occurrence of the event giving rise to the right to terminate for “Good Reason” as set forth in Section 3(c) hereof.

(h)    Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and Executive. Contemporaneously with this Agreement, Executive shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Executive shall not be entitled to receive both the compensation and benefits provided by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Executive in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Executive than otherwise provided in the Change in Control Severance Plan. If Executive is terminated under circumstances that do not entitle him to the compensation and benefits provided

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by the Change in Control Severance Plan, Executive shall be paid the compensation and benefits provided by the applicable part of Section 4.

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IN WITNESS WHEREOF, the Executive has hereunto set his hand and, pursuant to the authorization from its Board, the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     /s/ David L. Pitts            _______

Name: David L. Pitts                

Title: Vice President and Chief Financial Officer     

EXECUTIVE

/s/ Richard H. Smith                    

Name: Richard H. Smith

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EXHIBIT A TO AMENDED AND RESTATED EMPLOYMENT AGREEMENT DATED February 14, 2019

1. For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means 97%.

“Supplemental Life Insurance Benefit” means 1.8.

“Supplemental Severance Multiplier Percentage” means 80%.

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EXHIBIT B – FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”) described in that certain Amended and Restated Employment Agreement (the “Agreement”) effective as of February 14, 2019 between Carrizo Oil & Gas, Inc., a Texas Corporation (the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims

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arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing the Company and the other Released Parties from any and all claims he may have against any of

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them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

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EX-10.28

Exhibit 10.28

AMENDED AND RESTATED EMPLOYMENT AGREEMENT

This AMENDED AND RESTATED EMPLOYMENT AGREEMENT (the “Agreement”) is entered into by and between Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), and Gregory F. Conaway (the “Employee”), to be effective as of the 14th day of February 2019 (the “Agreement Effective Date”), and amends and restates the Employment Agreement between the Parties dated as of July 11, 2011. Contemporaneously with the execution of this Agreement, the Company is adopting, and the Employee is being made a participant in, the Carrizo Oil & Gas, Inc. Change in Control Severance Plan, effective as of February 14, 2019 (the “Change in Control Severance Plan”).

NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

1.Employment Period. As of the Agreement Effective Date, the Company hereby agrees to continue to employ the Employee and the Employee hereby agrees to remain in the employment with the Company, in accordance with, and subject to, the terms and provisions of this Agreement, for the period (the “Employment Period”) commencing on the Agreement Effective Date and ending on the first anniversary of the Agreement Effective Date; provided, on the Agreement Effective Date and on each day thereafter, the Employment Period shall automatically be extended for an additional one day without any further action by either the Company or the Employee, it being the intention of the parties that there shall be continuously a remaining term of not less than one year’s duration of the Employment Period until an event has occurred as described in, or one of the parties shall have made an appropriate election and notification pursuant to, the provisions of Section 3.

2.Terms of Employment.

(a)Position and Duties. As of the Agreement Effective Date, the Employee shall continue as a full time employee with the title and responsibilities of Vice President and Chief Accounting Officer and during the Employment Period, excluding any periods of vacation and sick leave to which the Employee is entitled, the Employee agrees to devote full attention and time during normal business hours to the business and affairs of the Company and, to the extent necessary to discharge the responsibilities assigned to the Employee hereunder, to use the Employee’s reasonable best efforts to perform faithfully and efficiently such responsibilities as may be assigned to the Employee by senior executives of the Company. During the Employment Period, it shall not be a violation of this Agreement for the Employee to (A) serve on corporate, civic, educational, alumni or charitable boards or committees, (B) deliver lectures, fulfill speaking engagements or teach at educational institutions or (C) manage personal investments, so long as such activities do not materially interfere with the performance of the Employee’s responsibilities as an employee of the Company in accordance with this Agreement; provided that the Employee may not serve on the board of a publicly traded for profit corporation or similar body of a publicly traded for profit business organized in other than corporate form, without the consent of the Nominating and Corporate Governance Committee of the Board of Directors of the Company (the “Board”).

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(b)Compensation.

(i)Base Salary. Commencing on the Agreement Effective Date and thereafter during his Employment Period, the Employee shall receive an annual base salary of $273,000 (as such salary may be increased from time to time, the “Annual Base Salary”), which shall be paid no less frequently than on a semimonthly basis.

(ii)Annual Incentive Bonus. In addition to Annual Base Salary, the Employee may be awarded, for each fiscal year or portion thereof during the Employment Period, an Annual Incentive Bonus (the “Annual Incentive Bonus”), in an amount as determined by the compensation committee of the Board of Directors of the Company, in its sole discretion, taking into account the Company’s performance, the Employee’s position, responsibilities, and accomplishments with the Company and considering the Employee’s performance review and evaluation and other factors deemed reasonable and appropriate by the compensation committee, prorated for any period consisting of less than 12 full months.

(iii)Incentive, Savings and Retirement Plans. During the Employment Period, the Employee shall be entitled to participate in all incentive, savings and retirement plans that are tax-qualified under Section 401(a) of the Internal Revenue Code of 1986, as amended (“Code”), and all plans that are supplemental to any such tax-qualified plans, in each case to the extent that such plans are applicable generally to other salaried employees of the Company and its affiliated companies. As used in this Agreement, the term “affiliated companies” shall include, when used with reference to the Company, any company controlled by, controlling or under common control with the Company.

(iv)Welfare Benefit Plans. During the Employment Period, the Employee and/or the Employee’s dependents, as the case may be, shall be eligible for participation in and shall receive all benefits under welfare benefit plans, practices, policies and programs provided by the Company or its affiliated companies (including, without limitation, medical, prescription, dental, vision, disability, salary continuance, group life and supplemental group life, accidental death and travel accident insurance plans and programs) to the extent applicable generally to other salaried employees of the Company and its affiliated companies.

(v)Expenses. During the Employment Period, the Employee shall be entitled to receive prompt reimbursement for all reasonable expenses, including approved professional membership fees, incurred by the Employee in accordance with the policies, practices and procedures of the Company and its affiliated companies.

(vi)Vacation. During the Employment Period, the Employee shall be entitled to paid vacation in accordance with the plans, policies, programs and practices of the Company and its affiliated companies.

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3.Termination of Employment.

(a)Death or Disability. The Employee’s employment shall terminate automatically upon the Employee’s death during the Employment Period. If the Company determines in good faith that the Disability of the Employee has occurred during the Employment Period (pursuant to the definition of Disability set forth below), it may give to the Employee written notice in accordance with Section 12(d) of this Agreement of its intention to terminate the Employee’s employment. In such event, the Employee’s employment with the Company shall terminate effective on the 30th day after receipt of such notice by the Employee (the “Disability Effective Date”), provided that, within the 30 days after such receipt, the Employee shall not have returned to full-time performance of the Employee’s duties. For the purposes of this Agreement, “Disability” shall mean the absence of the Employee from the Employee’s duties with the Company on a full-time basis for either (i) 180 consecutive business days or (ii) in any two-year period 270 nonconsecutive business days as a result of incapacity due to mental or physical illness which is determined to be total and permanent by a physician selected by the Company or its insurers and acceptable to the Employee or the Employee’s legal representative (such agreement as to acceptability not to be withheld unreasonably). In the event the Employee incurs a separation from service within the meaning of Treasury Regulation § 1.409A-1(h) as a result of his incapacity, then the Disability Effective Date shall be deemed to be the date of the Employee’s separation from service.

(b)Cause. The Company may terminate the Employee’s employment during the Employment Period for Cause. For purposes of this Agreement, “Cause” shall mean the Company’s termination of the Employee’s employment for any of the following: (i) the Employee’s final conviction of a felony crime that enriched the Employee at the expense of the Company; provided, however, that after indictment, the Company may suspend the Employee from the rendition of services, but without limiting or modifying in any other way the Company’s obligations under this Agreement; (ii) a breach by the Employee of a fiduciary duty owed to the Company; (iii) a breach by the Employee of any of the covenants made by him in Sections 7 and 9 hereof; (iv) the willful and gross neglect by the Employee of the duties specifically and expressly required by this Agreement; or (v) the Employee’s continuing failure to substantially perform his duties and responsibilities hereunder (except by reason of the Employee’s incapacity due to physical or mental illness or injury).

(c)Other Terminations. The Employee’s employment may be terminated during the Employment Period at any time by the Employee or the Company for any reason.

(d)Notice of Termination. Any termination by the Company for Cause, or by the Employee, shall be communicated by Notice of Termination to the other party hereto given in accordance with Section 12(d) of this Agreement. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or circumstance in enforcing the Company’s rights hereunder.

(e)Date of Termination. For purposes of this Agreement, the term “Date of Termination” means (i) if the Employee’s employment is terminated by the Company for Cause,

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the date of receipt of the Notice of Termination or any later date specified therein, as the case may be, (ii) if the Employee’s employment is terminated by the Company other than for Cause or Disability, the Date of Termination shall be the date on which the Company notifies the Employee of such termination, (iii) if the Employee’s employment is terminated by reason of death or Disability, the Date of Termination shall be the date of death of the Employee or the Disability Effective Date, as the case may be and (iv) if the Employee’s employment is terminated by the Employee, the Date of Termination shall be the date of the receipt of the Notice of Termination or any later date specified therein.

(f)Deemed Resignations. Unless otherwise agreed to in writing by the Company and Employee prior to the termination of Employee’s employment, any termination of Employee’s employment shall constitute an automatic resignation of Employee as an officer of the Company and each affiliate of the Company, and an automatic resignation of Employee from the Board and the board of directors of the Company (if applicable) and from the board of directors or similar governing body of any affiliate of the Company and from the board of directors or similar governing body of any corporation, limited liability entity or other entity in which the Company or any affiliate holds an equity interest and with respect to which board or similar governing body Employee serves as the Company’s or such affiliate’s designee or other representative.

4.Obligations of the Company upon Termination.

(a)Disability. If, during the Employment Period, the Company shall terminate the Employee’s employment by reason of Disability (but not by reason of death):

(i)the Company shall pay or provide to or in respect of the Employee the following amounts and benefits:

A.in a lump sum in cash, within 10 days after the Date of Termination, an amount equal to the sum of (1) the Employee’s Annual Base Salary through the Date of Termination, (2) any accrued but unpaid Annual Incentive Bonus for any prior fiscal year, (3) any deferred compensation previously awarded to or earned by the Employee (together with any accrued interest or earnings thereon), subject to the terms and conditions of any plan or arrangement providing such deferred compensation, and (4) any compensation for unused vacation time for which the Employee is eligible in accordance with the plans, policies, programs and practices of the Company and its affiliated companies, in each case to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2), (3), and (4) shall be hereinafter referred to as the “Accrued Obligation”);

B.in a lump sum in cash, within 60 days after the Date of Termination, an amount equal to the Severance Multiplier Percentage (as defined in Exhibit A) multiplied by the Annual Base Salary;

C.in a lump sum in cash, within 60 days after the Date of Termination, an additional amount equal to the Supplemental Severance

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Multiplier Percentage (as defined in Exhibit A) of Annual Base Salary multiplied by a fraction, the numerator of which is the number of days in the fiscal year through the Date of Termination and the denominator of which is 365; provided, however, that if the Employee is terminated due to Disability, the preceding fraction shall be deemed to be equal to 1.0; and

D.effective as of the Date of Termination, (1) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every stock option, restricted stock award, restricted stock unit award and other equity-based award and performance award (each, a “Compensatory Award”) that is outstanding as of a time immediately prior to the Date of Termination and (2) unless a longer post-employment term is provided in the applicable award agreement, the extension of the term during which each and every Compensatory Award may be exercised by the Employee until the earlier of (x) the first anniversary of the Date of Termination or (y) the date upon which the right to exercise any Compensatory Award would have expired if the Employee had continued to be employed by the Company under the terms of this Agreement until the latest possible date of termination of the Employment Period in accordance with the provisions of Section 1 hereof (the “Final Expiration Date”).

Anything in this Agreement to the contrary notwithstanding, if a Change in Control occurs and if the Employee’s employment with the Company is terminated within 12 months prior to the date on which the Change in Control occurs, and if it is reasonably demonstrated by the Employee that such termination of employment or cessation of service (x) was at the request of a third party who has taken steps reasonably calculated to effect the Change in Control or (y) otherwise arose in connection with or anticipation of the Change in Control, then the Employee will be entitled to an additional payment equal to the difference between his Severance Benefits (as defined in the Change in Control Severance Plan) and the benefits received pursuant to this Agreement; provided, however, that the additional Change in Control severance will be paid within 5 days following the occurrence of the Change in Control.

(ii)for the period beginning on the Date of Termination and ending on the Final Expiration Date, or such longer period as any medical or dental plan shall provide, the Company shall continue benefits to the Employee and/or the Employee’s dependents at least equal to those which would have been provided to them in accordance with the medical and dental plans described in Section 2(b)(iv) of this Agreement if the Employee’s employment had not been terminated in accordance with the medical and dental plans of the Company and its affiliated companies, but with the Company’s medical benefits coverages being secondary to any coverages provided by another employer. Notwithstanding the foregoing, if the Company’s obligations contemplated by this Section 4(a)(ii) would result in the imposition of

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excise taxes on the Company for failure to comply with the nondiscrimination requirements of the Patient Protection and Affordable Care Act of 2010, as amended, and the Health Care and Education Reconciliation Act of 2010, as amended (to the extent applicable), the Company shall discontinue the health benefits or reimbursements provided for in this Section 4(a)(ii) and shall instead pay to the Employee a lump-sum payment equal to the employer portion of premium costs of medical and dental benefits provided to the Employee and the Employee’s dependents immediately prior to the Employee’s termination for the remainder of such period no later than 30 days after such determination by the Company. In lieu of continued participation in plans, practices, programs and policies described in Section 2(b)(iv) of this Agreement (other than the medical or dental plan, as described above), the Company shall pay the Employee a lump sum payment equal to the Benefits Continuation Multiplier Percentage (as defined in Exhibit A) of the Employee’s Annual Base Salary.

(b)Death. If the Employee’s employment is terminated by reason of the Employee’s death during the Employment Period, this Agreement shall terminate without further obligations to the Employee’s legal representatives under this Agreement, other than (i) the payment of Accrued Obligations (which shall be paid to the Employee’s estate or beneficiary, as applicable, in a lump sum in cash within 30 days of the Date of Termination), (ii) during the period beginning on the Date of Termination and ending on the first anniversary thereof medical and dental benefits coverage for the Employee’s dependents determined as if the Employee’s employment had not terminated by reason of death, and (iii) effective as of the Date of Termination, (A) immediate vesting and exercisability of, and termination of any restrictions on sale or transfer (other than any such restriction arising by operation of law) with respect to, each and every Compensatory Award outstanding as of the time immediately prior to the Date of Termination, (B) the extension of the term during which each and every Compensatory Award may be exercised or purchased by the Employee until the earlier of (1) the first anniversary of the Date of Termination or (2) the date upon which the right to exercise or purchase any Compensatory Award would have expired if the Employee had continued to be employed by the Company under the terms of this Agreement until the Final Expiration Date.

(c)With or Without Cause; Other than for Disability. If the Employee’s employment is terminated by the Company or by the Employee for any reason not covered by Sections 4(a) or 4(b) above, then this Agreement shall terminate without further obligations to the Employee other than for Accrued Obligations. In such case, all Accrued Obligations shall be paid to the Employee in a lump sum in cash within 30 days of the Date of Termination.

5.Non-exclusivity of Rights. Except as provided in Section 4 of this Agreement, nothing in this Agreement shall prevent or limit the Employee’s continuing or future participation in any plan, program, policy or practice provided by the Company or any of its affiliated companies and for which the Employee may qualify, nor shall anything herein limit or otherwise affect such rights as the Employee may have under any contract or agreement with the Company or any of its affiliated companies. Amounts which are vested benefits or which the Employee is otherwise entitled to receive under any plan, policy, practice or program of or any contract or agreement with the

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Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program or contract or agreement except as such plan, policy, practice or program is superseded by this Agreement.

6.Full Settlement; Resolution of Disputes.

(a)Any dispute arising out of or relating to this Agreement, including the breach, termination or validity thereof, shall be finally resolved by arbitration in accordance with the CPR Institute for Dispute Resolution Rules for Non-Administered Arbitration in effect on the date of this Agreement by a single arbitrator selected in accordance with the CPR Rules. The arbitration shall be governed by the Federal Arbitration Act, 9 U.S.C. §§ 1-16, and judgment on the award rendered by the arbitrator may be entered by any court having jurisdiction thereof. The place of arbitration shall be in Harris County, Texas. The arbitrator’s decision must be based on the provisions of this Agreement and the relevant facts, and the arbitrator’s reasoned decision and award shall be binding on both parties. Nothing herein is or shall be deemed to preclude the Company’s resort to the injunctive relief prescribed in this Agreement, including any injunctive relief implemented by the arbitrator pursuant to this Section 6(a). The parties will each bear their own attorneys’ fees and costs in connection with any dispute.

(b)Notwithstanding any provision of Section 4, the Company’s obligation to pay the amounts due on any termination of employment under Section 4 (other than the Accrued Obligations) are conditioned on the Employee’s execution (without revocation during any applicable statutory revocation period) of a waiver and release of any and all claims against the Company and its affiliates in substantially the form attached hereto as Exhibit B (the “Waiver and Release Agreement”). The Company will provide the Employee with a Waiver and Release Agreement on or before the Employee’s Termination Date. The Employee must execute and return the Waiver and Release Agreement to the Company no later than the 21st or the 45th day following (but not before) his or her Termination Date, as determined by, and reflected in the Waiver and Release Agreement provided to the Employee, by the Company, followed by a seven (7)-day revocation period following the date the Release Agreement is executed (“Revocation Period”). The Employee may not determine the calendar year of payment of taxable severance benefits, and in the event the consideration period occurs in two calendar years, the payment will be made in the later calendar year. The Employee’s failure to timely execute and return the Waiver and Release Agreement in accordance with the previous sentence, or the Employee’s revocation of the Waiver and Release Agreement during the Revocation Period, will result in a forfeiture of the severance benefits payable to the Employee under the terms of the Agreement (but not the Accrued Obligations).

7.Confidential Information. The Employee shall hold in a fiduciary capacity for the benefit of the Company all secret or confidential information, knowledge or data relating to the Company or any of its affiliated companies, and their respective businesses, which shall have been obtained by the Employee during the Employee’s employment by the Company or any of its affiliated companies and which shall not be or become public knowledge (other than by acts by the Employee or representatives of the Employee in violation of this Agreement) (referred to herein as “Confidential Information”). After termination of the Employee’s employment with the Company, the Employee shall not, without the prior written consent of the Company or as may otherwise be

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required by law or legal process, communicate or divulge any such information, knowledge or data to anyone other than the Company and those designated by it. In no event shall an asserted violation of the provisions of this Section 7 constitute a basis for deferring or withholding any amounts otherwise payable to the Employee under this Agreement. Also, within 14 days of the termination of the Employee’s employment for any reason, the Employee shall return to Company all documents and other tangible items of or containing Company information which are in the Employee’s possession, custody or control, or with respect to equipment that is not Company property that is in the Employee’s possession, custody or control and which contains Confidential Information, the Employee shall purge such Confidential Information from such equipment. Notwithstanding the foregoing, it is understood by the parties that in the course of his employment with the Company the Employee may retain mental recollections or other impressions as a result of having had access to or knowledge of the Company’s Confidential Information, and the Company agrees that such retained mental impressions shall not impede or restrict the Employee from engaging in work for a subsequent employer so long as Confidential Information is not expressly disclosed to such subsequent employer.

8.Change in Control.

As used in this Agreement, Change in Control has the meaning set forth in the Change in Control Severance Plan.

9.Non-Compete and Non-Solicitation.

(a)    The Employee recognizes that in each of the highly competitive businesses in which the Company is engaged, personal contact is of primary importance in securing new customers and in retaining the accounts and goodwill of present customers and protecting the business of the Company. The Employee, therefore, agrees that during the Employment Period and for a period of one year after the Date of Termination, he will not either within 20 miles of any geographic location of any Shale play with respect to which he has devoted substantial attention to the material business interests of the Company or any of its affiliated companies or with respect to any immediate geologic trends in any non-Shale plays, in either case, in which the Company or any of its affiliated companies have active leases or are actively pursuing leases through direct employee activity or hired brokers as of the Date of Termination, without regard, in either case, to whether the Employee has worked at such location (the “Relevant Geographic Area”), (i) accept employment or render service to any Person that is engaged in a business directly competitive with the business then engaged in by the Company or any of its affiliated companies in the Relevant Geographic Area, (ii) enter into or take part in or lend his name, counsel or assistance to any business, either as proprietor, principal, investor, partner, director, officer, executive, consultant, advisor, agent, independent contractor, or in any other capacity whatsoever, for any purpose that would be competitive with the business of the Company or any of its affiliated companies in the Relevant Geographic Area or (iii) regardless of whether it is in the Relevant Geographic Area, directly or indirectly, either as principal, agent, independent contractor, consultant, director, officer, employee, employer, advisor, stockholder, partner or in any other individual or representative capacity whatsoever, either for his own benefit or for the benefit of any other person or entity either (A) hire, contract or solicit, or attempt any of the foregoing, with respect to hiring any employee of the

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Company or its affiliated companies, or (B) induce or otherwise counsel, advise or encourage any employee of the Company or its affiliated companies to leave the employment of the Company or its affiliated companies (all of the foregoing activities described in (i), (ii) and (iii) are collectively referred to as the “Prohibited Activity”). Notwithstanding anything contained in this Section 9 to the contrary, the Prohibited Activity shall not be applicable to the state or federal waters of the Gulf of Mexico or outside of the United States except as to the area covered by any U.S. or foreign state or federal oil and gas lease, license or permit in which the Company owns a working interest which was acquired by the Company prior to or during the Employment Period and further limited to the depths in which the Company owns such working or operating rights interest.

(a)In addition to all other remedies at law or in equity which the Company may have for breach of a provision of this Section 9 by the Employee, it is agreed that in the event of any breach or attempted or threatened breach of any such provision, the Company shall be entitled, upon application to any court of proper jurisdiction, to a temporary restraining order or preliminary injunction (without the necessity of (i) proving irreparable harm, (ii) establishing that monetary damages are inadequate or (iii) posting any bond with respect thereto) against the Employee prohibiting such breach or attempted or threatened breach by proving only the existence of such breach or attempted or threatened breach. If the provisions of this Section 9 should ever be deemed to exceed the time, geographic or occupational limitations permitted by the applicable law, the Employee and the Company agree that such provisions shall be and are hereby reformed to the maximum time, geographic or occupational limitations permitted by the applicable law.

(b)The covenants of the Employee set forth in this Section 9 are independent of and severable from every other provision of this Agreement; and the breach of any other provision of this Agreement by the Company or the breach by the Company of any other agreement between the Company and the Employee shall not affect the validity of the provisions of this Section 9 or constitute a defense of the Employee in any suit or action brought by the Company to enforce any of the provisions of this Section 9 or seek any relief for the breach thereof by the Employee.

(c)The Employee acknowledges, agrees and stipulates that: (i) the terms and provisions of this Agreement are reasonable and constitute an otherwise enforceable agreement to which the terms and provisions of this Section 9 are ancillary or a part of as contemplated by TEX. BUS. & COM. CODE ANN. Sections 15.50-15.52; (ii) the consideration provided by the Company under this Agreement is not illusory; and (iii) the consideration given by the Company under this Agreement, including, without limitation, the provision by the Company of Confidential Information to the Employee as contemplated by Section 7, gives rise to the Company’s interest in restraining and prohibiting the Employee from engaging in the Prohibited Activity within the Relevant Geographic Area as provided under this Section 9, and the Employee’s covenant not to engage in the Prohibited Activity within the Relevant Geographic Area pursuant to this Section 9 is designed to enforce the Employee’s consideration (or return promises), including, without limitation, the Employee’s promise to not disclose Confidential Information under this Agreement.

10.Successors.

(a)This Agreement is personal to the Employee and without the prior written consent of the Company shall not be assignable by the Employee otherwise than by will or the laws

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of descent and distribution. This Agreement shall inure to the benefit of and be enforceable by the Employee’s heirs, executors and other legal representatives.

(b)This Agreement shall inure to the benefit of and be binding upon the Company and may only be assigned to a successor described in Section 10(c).

(c)The Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law, or otherwise.

11.Section 409A.

(a)This Agreement is intended to provide payments that are exempt from or compliant with the provisions of Section 409A of the Code and related regulations and Treasury pronouncements (“Section 409A”), and the Agreement shall be interpreted accordingly. Notwithstanding any provision of this Agreement to the contrary, the parties agree that any benefit or benefits under this Agreement that the Company determines are subject to the suspension period under Code Section 409A(a)(2)(B) shall not be paid or commence until a date following six months after the Employee’s termination date, or if earlier, the Employee’s death.

(b)Each payment under this Agreement is intended to be excepted from Section 409A, including, but not limited to, by compliance with the short-term deferral exception as specified in Treasury Regulation § 1.409A-1(b)(4) and the involuntary separation pay exception within the meaning of Treasury Regulation § 1.409A-1(b)(9)(iii) and the provisions of this Agreement will be administered, interpreted and construed accordingly (or disregarded to the extent such provision cannot be so administered, interpreted, or construed).

(c)All reimbursements or provision of in-kind benefits pursuant to this Agreement shall be made in accordance with Treasury Regulation § 1.409A-3(i)(1)(iv) such that the reimbursement or provision will be deemed payable at a specified time or on a fixed schedule relative to a permissible payment event. Specifically, the amount reimbursed or in-kind benefits provided under this Agreement during the Employee’s taxable year may not affect the amounts reimbursed or provided in any other taxable year (except that total reimbursements may be limited by a lifetime maximum under a group health plan), the reimbursement of an eligible expense shall be made on or before the last day of the Employee’s taxable year following the taxable year in which the expense was incurred, and the right to reimbursement or provision of in-kind benefit is not subject to liquidation or exchange for another benefit.

(d)Notwithstanding any provision of this Agreement to the contrary, the Employee acknowledges and agrees that the Company and its employees, officers, directors, affiliates and subsidiaries shall not be liable for, and nothing provided or contained in this Agreement will be construed to obligate or cause the Company and/or its employees, officers, directors, affiliates

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and subsidiaries to be liable for, any tax, interest or penalties imposed on the Employee related to or arising with respect to any violation of Section 409A.

12.Miscellaneous.

(a)This Agreement shall be governed by and construed in accordance with the laws of the State of Texas, without reference to principles of conflict of laws that would require the application of the laws of any other state or jurisdiction.

(b)The captions of this Agreement are not part of the provisions hereof and shall have no force or effect.

(c)This Agreement may not be amended or modified otherwise than by a written agreement executed by the parties hereto or their respective successors and heirs, executors and other legal representatives. As applied to the Employee, the Change in Control Severance Plan may not be amended in any manner that is adverse to the Employee without his written consent.

(d)All notices and other communications hereunder shall be in writing and shall be given, if by the Employee to the Company, by telecopy or facsimile transmission at the telecommunications number set forth below and, if by either the Company or the Employee, either by hand delivery to the other party or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows:

If to the Employee:

Name: Gregory F. Conaway

c/o Carrizo Oil & Gas, Inc.

500 Dallas, Suite 2300

Houston, Texas 77002

If to the Company:

Carrizo Oil & Gas, Inc.

500 Dallas, Suite 2300

Houston, Texas 77002

Fax Number: (713) 358-6286

Telephone Number: (713) 328-1000

Attention: Corporate Secretary

or to such other address as either party shall have furnished to the other in writing in accordance herewith. Notice and communications shall be effective when actually received by the addressee.

(e)The invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

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(f)Except as otherwise provided herein, the Company may withhold from any amounts payable under this Agreement such federal, state or local taxes as shall be required to be withheld pursuant to any applicable law or regulation.

(g)The Employee’s or the Company’s failure to insist upon strict compliance with any provision hereof or any other provision of this Agreement or the failure to assert any right the Employee or the Company may have hereunder shall not be deemed to be a waiver of such provision or right or any other provision or right of this Agreement.

(h)Except as provided below and as otherwise specifically contemplated by this Agreement, this Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes any and all prior written or oral agreements, arrangements or understandings between the Company and the Employee. Contemporaneously with this Agreement, the Employee shall become a participant in the Change in Control Severance Plan, which provides additional benefits in connection with certain terminations of employment following a Change in Control. The Employee shall not be entitled to receive both the compensation and benefits provided by this Agreement and the Change in Control Severance Plan, and following the occurrence of a Change in Control, the provisions of the Change in Control Plan shall control, except where Sections 4 and 6 of this Agreement specifically provide additional rights to the Employee in connection with the Change in Control Severance Plan, or where this Agreement would result in a greater benefit to the Employee than otherwise provided in the Change in Control Severance Plan. If the Employee is terminated under circumstances that do not entitle him to the compensation and benefits provided by the Change in Control Severance Plan, the Employee shall be paid the compensation and benefits provided by the applicable part of Section 4.

[REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

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IN WITNESS WHEREOF, the Employee has hereunto set his hand and the Company has caused these presents to be executed in its name on its behalf, all to be effective as of the Agreement Effective Date.

CARRIZO OIL & GAS, INC.

By:     /s/ David L. Pitts        _______

Name: David L. Pitts                

Title: Vice President and Chief Financial Officer

EMPLOYEE

/s/ Gregory F. Conaway            

Name: Gregory F. Conaway

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Exhibit A

For purposes of this Agreement, the following capitalized words shall have the meanings indicated below:

“Benefits Continuation Multiplier Percentage” means 3%.

“Severance Multiplier Percentage” means 97%.

“Supplemental Severance Multiplier Percentage” means 70%.

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Exhibit B

FORM OF WAIVER AND RELEASE

In consideration of, and as a condition precedent to, the severance payment and benefits (the “Severance”)described in that certain Amended and Restated Employment Agreement (the “Agreement”) effective as of February 14, 2019 between Carrizo Oil & Gas, Inc., a Texas Corporation(the “Company”), and _____________ (“Employee”), which Severance is offered to Employee in exchange for a general waiver and release of claims (this “Waiver and Release”). Employee having acknowledged the above-stated consideration as full compensation for and on account of any and all injuries and damages which Employee has sustained or claimed, or may be entitled to claim, Employee, for himself, and his heirs, executors, administrators, successors and assigns, does hereby release, forever discharge and promise not to sue the Company, its parents, subsidiaries, affiliates, successors and assigns, and their past and present officers, directors, partners, employees, members, managers, shareholders, agents, attorneys, accountants, insurers, heirs, administrators, executors, as well as all employee benefit plans maintained by any of the foregoing entities or individuals, and all fiduciaries and administrators of such plans, in their personal and representative capacities (collectively the “Released Parties”) from any and all claims, liabilities, costs, expenses, judgments, attorney fees, actions, known and unknown, of every kind and nature whatsoever in law or equity, which Employee had, now has, or may have against the Released Parties relating in any way to Employee’s employment with the Company or termination thereof prior to and including the date of execution of this Waiver and Release, including but not limited to, all claims for contract damages, tort damages, special, general, direct, punitive and consequential damages, compensatory damages, loss of profits, attorney fees and any and all other damages of any kind or nature; all contracts, oral or written, between Employee and any of the Released Parties; any business enterprise or proposed enterprise contemplated by any of the Released Parties, as well as anything done or not done prior to and including the date of execution of this Waiver and Release.

Employee understands and agrees that this release and covenant not to sue shall apply to any and all claims or liabilities arising out of or relating to Employee’s employment with the Company and the termination of such employment, including, but not limited to: claims of discrimination based on age, race, color, sex (including sexual harassment), religion, national origin, marital status, parental status, veteran status, union activities, disability or any other grounds under applicable federal, state or local law prior to and including the date of execution of this Waiver and Release, including, but not limited to, claims arising under the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Family and Medical Leave Act, Title VII of the Civil Rights Act, the Civil Rights Act of 1991, 42 U.S.C. § 1981, the Genetic Information Non-Discrimination Act of 2008, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985, the Rehabilitation Act of 1973, the Equal Pay Act of 1963 (EPA), all as amended, as well as any claims prior to and including the date of execution of this Waiver and Release, regarding wages; benefits; vacation; sick leave; business expense reimbursements; wrongful termination; breach of the covenant of good faith and fair dealing; intentional or negligent infliction of emotional distress; retaliation; outrage; defamation; invasion of privacy; breach of contract; fraud or negligent misrepresentation; harassment; breach

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of duty; negligence; discrimination; claims under any employment, contract or tort laws; claims arising under any other federal law, state law, municipal law, local law, or common law; any claims arising out of any employment contract, policy or procedure; and any other claims related to or arising out of his employment or the separation of his employment with the Company prior to and including the date of execution of this Waiver and Release.

In addition, Employee agrees not to cause or encourage any legal proceeding to be maintained or instituted against any of the Released Parties, save and except proceedings to enforce the terms of the Agreement or claims of Employee not released by and in this Waiver and Release.

Notwithstanding anything to the contrary contained in this Waiver and Release, nothing in this Waiver and Release shall be construed to release the Company from (i) any obligations set forth in the Agreement, (ii) claims that relate to events that arise after the execution of this Waiver and Release, or (iii) any claim or right held by Employee (whether as an employee, officer, director, stockholder or in any other capacity) for coverage under the Company’s or any affiliate’s D&O policies or any similar coverage or protection provided under the organizational documents of the Company or any affiliate. This release does not apply to any claims for unemployment compensation or any other claims or rights which, by law, cannot be waived, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that Employee disclaims and waives any right to share or participate in any monetary award from the Company resulting from the prosecution of such charge or investigation or proceeding. Notwithstanding the foregoing or any other provision in this Waiver and Release or the Agreement to the contrary, the Company and Employee further agree that nothing in this Waiver and Release or the Agreement (i) limits Employee’s ability to file a charge or complaint with the EEOC, the NLRB, OSHA, the SEC or any other federal, state or local governmental agency or commission (each a “Government Agency” and collectively “Government Agencies”); (ii) limits Employee’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any Government Agency, including providing documents or other information and reporting possible violations of law or regulation or other disclosures protected under the whistleblower provisions of applicable law or regulation, without notice to the Company; or (iii) limits Employee’s right to receive an award for information provided to any Government Agencies.

Employee expressly acknowledges that he is voluntarily, irrevocably and unconditionally releasing and forever discharging the Company and the other Released Parties from all rights or claims he has or may have against the Released Parties, including, but not limited to, without limitation, all charges, claims of money, demands, rights, and causes of action arising under the Age Discrimination in Employment Act of 1967, as amended (“ADEA”), up to and including the date Employee signs this Waiver and Release including, but not limited to, all claims of age discrimination in employment and all claims of retaliation in violation of ADEA. Employee further acknowledges that the consideration given for this waiver of claims under the ADEA is in addition to anything of value to which he was already entitled in the absence of this waiver. Employee further acknowledges: (a) that he has been informed by this writing that he should consult with an attorney prior to executing this Waiver and Release; (b) that he has carefully read and fully understands all of the provisions of this Waiver and Release; (c) he is, through this Waiver and Release, releasing

16

the Company and the other Released Parties from any and all claims he may have against any of them; (d) he understands and agrees that this waiver and release does not apply to any claims that may arise under the ADEA after the date he executes this Waiver and Release; (e) he has at least [twenty-one (21)] [forty-five (45)] days within which to consider this Waiver and Release; and (f) he has seven (7) days following his execution of this Waiver and Release to revoke the Waiver and Release; and (g) this Waiver and Release shall not be effective until the revocation period has expired and Employee has signed and has not revoked the Waiver and Release.

Employee acknowledges and agrees that: (a) he has had reasonable and sufficient time to read and review this Waiver and Release and that he has, in fact, read and reviewed this Waiver and Release; (b) that he has the right to consult with legal counsel regarding this Waiver and Release and is encouraged to consult with legal counsel with regard to this Waiver and Release; (c) that he has had (or has had the opportunity to take) [twenty-one (21)] [forty-five (45)] calendar days to discuss the Waiver and Release with a lawyer of his choice before signing it and, if he signs before the end of that period, he does so of his own free will and with the full knowledge that he could have taken the full period; (d) that he is entering into this Waiver and Release freely and voluntarily and not as a result of any coercion, duress or undue influence; (e) that he is not relying upon any oral representations made to him regarding the subject matter of this Waiver and Release; (f) that by this Waiver and Release he is receiving consideration in addition to that which he was already entitled; and (g) that he has received all information he requires from the Company in order to make a knowing and voluntary release and waiver of all claims against the Company and the other Released Parties.

Employee acknowledges and agrees that he has seven (7) days after the date he signs this Waiver and Release in which to rescind or revoke this Waiver and Release by providing notice in writing to the Company. Employee further understands that the Waiver and Release will have no force and effect until the end of that seventh day (the “Waiver Effective Date”). If Employee revokes the Waiver and Release, the Company will not be obligated to pay or provide Employee with the benefits described in this Waiver and Release, and this Waiver and Release shall be deemed null and void.

AGREED TO AND ACCEPTED this ____ day of ________________, 20__.

[Name]

17

EX-21.1

Exhibit 21.1

Subsidiaries of the Company

The following are wholly owned subsidiaries of Carrizo Oil & Gas, Inc.:

Bandelier Pipeline Holding, LLC

Carrizo (Eagle Ford) LLC

Carrizo (Marcellus) LLC

Carrizo (Marcellus) WV LLC

Carrizo (Niobrara) LLC

Carrizo (Permian) LLC

Carrizo (Utica) LLC

Carrizo Marcellus Holding Inc.

CLLR, Inc.

Hondo Pipeline, Inc.

Mescalero Pipeline, LLC

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

(1) Registration Statements (Form S-3 Nos. 333-221121, and 333-221122) of Carrizo Oil & Gas, Inc. and in the related Prospectuses,

(2) Registration Statement (Form S-8 No. 333-218036) pertaining to the 2017 Incentive Plan of Carrizo Oil & Gas, Inc., and

(3) Registration Statements (Form S-8 Nos. 333-196252, 333-181585, 333-162888, 333-137273, 333-116528, 333-55838, and 333-35245) pertaining to the Incentive Plan of Carrizo Oil & Gas, Inc.,

of our reports dated February 28, 2019, with respect to the consolidated financial statements of Carrizo Oil & Gas, Inc. and the effectiveness of internal control over financial reporting of Carrizo Oil & Gas, Inc. included in this Annual Report (Form 10-K) of Carrizo Oil & Gas, Inc. for the year ended December 31, 2018.

/s/ Ernst & Young LLP

Houston, Texas

February 28, 2019

EX-23.2

Exhibit 23.2

Consent of Independent Registered Public Accounting Firm

The Board of Directors
Carrizo Oil & Gas, Inc.:

We consent to the incorporation by reference in the registration statements (No. 333‑221121 and No. 333-221122) on Form S-3 and registration statements (Nos. 333-218036, 333-196252, 333-181585, 333-162888, 333-137273, 333-116528, 333-55838, and 333-35245) on Form S-8 of Carrizo Oil & Gas, Inc. of our report dated February 27, 2017, with respect to the consolidated statements of operations, stockholders’ equity, and cash flows of Carrizo Oil & Gas, Inc. for the year ended December 31, 2016, which report appears in the December 31, 2018 annual report on Form 10‑K of Carrizo Oil & Gas, Inc.

/s/ KPMG LLP

Houston, Texas

February 28, 2019

EX-23.3

Exhibit 23.3

CONSENT OF INDEPENDENT PETROLEUM ENGINEER

We hereby consent to the incorporation by reference in the registration statements on Form S-8 (Registration Nos. 333-218036, 333-196252, 333-181585, 333-162888, 333-137273, 333-116528, 333-55838 and 333-35245) and the registration statements on Form S-3ASR (Registration Nos. 333-221121 and 333-221122) of Carrizo Oil & Gas, Inc. of our letter dated February 8, 2019, relating to estimates of proved reserves attributable to certain interests of Carrizo Oil & Gas, Inc. as of December 31, 2018.

/s/ RYDER SCOTT COMPANY, L.P.

RYDER SCOTT COMPANY, L.P.

TBPE Firm Registration No. F-1580

Houston, Texas

February 28, 2019

EX-31.1

Exhibit 31.1

CERTIFICATION

PRINCIPAL EXECUTIVE OFFICER

I, S.P. Johnson, IV, certify that:

1. I have reviewed this Annual Report on Form 10-K of Carrizo Oil & Gas, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect the registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	February 28, 2019	/s/ S.P. Johnson, IV
		S.P. Johnson, IV President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

PRINCIPAL FINANCIAL OFFICER

I, David L. Pitts, certify that:

1. I have reviewed this Annual Report on Form 10-K of Carrizo Oil & Gas, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect the registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	February 28, 2019	/s/ David L. Pitts
		David L. Pitts Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), I, S.P. Johnson, IV, President and Chief Executive Officer of Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), hereby certify, to my knowledge, that:

1. the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	February 28, 2019	/s/ S.P. Johnson, IV
		S.P. Johnson, IV President and Chief Executive Officer

The foregoing certification is being furnished solely pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) and is not being filed as part of the Report or as a separate disclosure document.

A signed original of this written statement required by Section 906 has been provided to Carrizo Oil & Gas, Inc. and will be retained by Carrizo Oil & Gas, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), I, David L. Pitts, Vice President and Chief Financial Officer of Carrizo Oil & Gas, Inc., a Texas corporation (the “Company”), hereby certify, to my knowledge, that:

1. the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	February 28, 2019	/s/ David L. Pitts
		David L. Pitts Vice President and Chief Financial Officer

The foregoing certification is being furnished solely pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) and is not being filed as part of the Report or as a separate disclosure document.

A signed original of this written statement required by Section 906 has been provided to Carrizo Oil & Gas, Inc. and will be retained by Carrizo Oil & Gas, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-99.1

Exhibit 99.1

Carrizo Oil & Gas, Inc.

Estimated

Future Reserves and Income

Attributable to Certain

Leasehold Interests

SEC Parameters

As of

December 31, 2018

/s/ Michael F. Stell

Michael F. Stell, P.E.

TBPE License No. 56416

Advising Senior Vice President

[SEAL]

RYDER SCOTT COMPANY, L.P.

TBPE Firm Registration No. F-1580

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

[Ryder Scott Company L.P. logo]

TBPE REGISTERED ENGINEERING FIRM F-1580        FAX (713) 651-0849

1100 LOUISIANA SUITE 4600    HOUSTON, TEXAS 77002-5294    TELEPHONE (713) 651-9191

February 8, 2019

Carrizo Oil & Gas, Inc.

500 Dallas Street, Suite 2300

Houston, Texas 77002

Gentlemen:

At your request, Ryder Scott Company, L.P. (Ryder Scott) has prepared an estimate of the proved reserves, future production, and income attributable to certain leasehold interests of Carrizo Oil & Gas, Inc. (Carrizo) as of December 31, 2018. The subject properties are located in the state of Texas. The reserves and income data were estimated based on the definitions and disclosure guidelines of the United States Securities and Exchange Commission (SEC) contained in Title 17, Code of Federal Regulations, Modernization of Oil and Gas Reporting, Final Rule released January 14, 2009 in the Federal Register (SEC regulations). Our third party study, completed on February 7, 2019 and presented herein, was prepared for public disclosure by Carrizo in filings made with the SEC in accordance with the disclosure requirements set forth in the SEC regulations.

The properties evaluated by Ryder Scott account for all of Carrizo’s total net proved reserves as of December 31, 2018.

The estimated reserves and future net income amounts presented in this report, as of December 31, 2018, are related to hydrocarbon prices. The hydrocarbon prices used in the preparation of this report are based on the average prices during the 12-month period prior to the “as of date” of this report, determined as the unweighted arithmetic averages of the prices in effect on the first-day-of-the-month for each month within such period, unless prices were defined by contractual arrangements, as required by the SEC regulations. Actual future prices may vary considerably from the prices required by SEC regulations. The recoverable reserves volumes and the income attributable thereto have a direct relationship to the hydrocarbon prices actually received; therefore, volumes of reserves actually recovered and the amounts of income actually received may differ significantly from the estimated quantities presented in this report. The results of this study are summarized as follows.

SUITE 800, 350 7TH AVENUE, S.W.    CALGARY, ALBERTA T2P 3N9    TEL (403) 262-2799    FAX (403) 262-2790

621 17TH STREET, SUITE 1550    DENVER, COLORADO 80293-1501    TEL (303) 623-9147    FAX (303) 623-4258

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 2

SEC PARAMETERS

Estimated Net Reserves and Income Data

Certain Leasehold Interests of

Carrizo Oil & Gas, Inc.

As of December 31, 2018

	Proved Reserves
	Developed				Total
	Producing		Undeveloped		Proved
Net Remaining Reserves
Oil/Condensate – Barrels	75,266,590		104,469,304		179,735,894
Plant Products – Barrels	25,809,455		43,313,976		69,123,431
Gas – MMcf	178,941		304,120		483,061
Income Data ($M)
Future Gross Revenue		$5,706,208		$8,002,883		$13,709,091
Deductions	1,793,044		3,991,749		5,784,793
Future Net Income (FNI)		$3,913,164		$4,011,134	$	7,924,298
Discounted FNI @ 10%		$2,383,875		$1,707,504	$	4,091,379

Liquid hydrocarbons are expressed in standard 42 U.S. gallon barrels. All gas volumes are reported on an “as sold basis” expressed in millions of cubic feet (MMcf) at the official temperature and pressure bases of the areas in which the gas reserves are located. In this report, the revenues, deductions, and income data are expressed as thousands of U.S. dollars ($M).

The estimates of the reserves, future production, and income attributable to properties in this report were prepared using the economic software package ARIES^TM Petroleum Economics and Reserves Software, a copyrighted program of Halliburton. The program was used at the request of Carrizo. Ryder Scott has found this program to be generally acceptable, but notes that certain summaries and calculations may vary due to rounding and may not exactly match the sum of the properties being summarized. Furthermore, one line economic summaries may vary slightly from the more detailed cash flow projections of the same properties, also due to rounding. The rounding differences are not material.

The future gross revenue is after the deduction of production taxes. The deductions incorporate the normal direct costs of operating the wells, ad valorem taxes, recompletion costs, development costs, and certain abandonment costs net of salvage. The “Other” deductions, as shown in the cash flow, include variable operating costs on a dollar per barrel and dollar per Mcf basis plus compression fees. The future net income is before the deduction of state and federal income taxes and general administrative overhead, and has not been adjusted for outstanding loans that may exist, nor does it include any adjustment for cash on hand or undistributed income.

Liquid hydrocarbon reserves account for approximately 92 percent and gas reserves account for the remaining 8 percent of total future gross revenue from proved reserves.

The discounted future net income shown above was calculated using a discount rate of 10 percent per annum compounded monthly. Future net income was discounted at four other discount rates which were also compounded monthly. These results are shown in summary form as follows.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 3

	Discounted Future Net Income ($M)
	As of December 31, 2018
Discount Rate		Total
Percent		Proved
5		$5,423,296
15		$3,272,346
20		$2,720,832
25		$2,325,821

The results shown above are presented for your information and should not be construed as our estimate of fair market value.

Reserves Included in This Report

The proved reserves included herein conform to the definition as set forth in the Securities and Exchange Commission’s Regulations Part 210.4-10(a). An abridged version of the SEC reserves definitions from 210.4-10(a) entitled “PETROLEUM RESERVES DEFINITIONS” is included as an attachment to this report.

The various reserves status categories are defined under the attachment entitled “PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDELINES” in this report.

No attempt was made to quantify or otherwise account for any accumulated gas production imbalances that may exist. The provedgas volumes presented herein do not include volumes of gas consumed in operations as reserves.

Reserves are “estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations.” All reserves estimates involve an assessment of the uncertainty relating the likelihood that the actual remaining quantities recovered will be greater or less than the estimated quantities determined as of the date the estimate is made. The uncertainty depends chiefly on the amount of reliable geologic and engineering data available at the time of the estimate and the interpretation of these data. The relative degree of uncertainty may be conveyed by placing reserves into one of two principal classifications, either proved or unproved. Unproved reserves are less certain to be recovered than proved reserves, and may be further sub-classified as probable and possible reserves to denote progressively increasing uncertainty in their recoverability. At Carrizo’s request, this report addresses only the proved reserves attributable to the properties evaluated herein.

Proved oil and gas reserves are “those quantities of oil and gas which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible from a given date forward.” The proved reserves included herein were estimated using deterministic methods. The SEC has defined reasonable certainty for proved reserves, when based on deterministic methods, as a “high degree of confidence that the quantities will be recovered.”

Provedreserves estimates will generally be revised only as additional geologic or engineering data become available or as economic conditions change. For proved reserves, the SEC states that “as changes due to increased availability of geoscience (geological, geophysical, and geochemical), engineering, and economic data are made to the estimated ultimate recovery (EUR) with time, reasonably certain EUR is

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 4

much more likely to increase or remain constant than to decrease.” Moreover, estimates of proved reserves may be revised as a result of future operations, effects of regulation by governmental agencies or geopolitical or economic risks. Therefore, the proved reserves included in this report are estimates only and should not be construed as being exact quantities, and if recovered, the revenues therefrom, and the actual costs related thereto, could be more or less than the estimated amounts.

Carrizo’s operations may be subject to various levels of governmental controls and regulations. These controls and regulations may include, but may not be limited to, matters relating to land tenure and leasing, the legal rights to produce hydrocarbons, drilling and production practices, environmental protection, marketing and pricing policies, royalties, various taxes and levies, including income tax, and are subject to change from time to time. Such changes in governmental regulations and policies may cause volumes of proved reserves actually recovered and amounts of proved income actually received to differ significantly from the estimated quantities.

The estimates of proved reserves presented herein were based upon a detailed study of the properties in which Carrizo owns an interest; however, we have not made any field examination of the properties. No consideration was given in this report to potential environmental liabilities that may exist nor were any costs included for potential liabilities to restore and clean up damages, if any, caused by past operating practices.

Estimates of Reserves

The estimation of reserves involves two distinct determinations. The first determination results in the estimation of the quantities of recoverable oil and gas and the second determination results in the estimation of the uncertainty associated with those estimated quantities in accordance with the definitions set forth by the Securities and Exchange Commission’s Regulations Part 210.4-10(a). The process of estimating the quantities of recoverable oil and gas reserves relies on the use of certain generally accepted analytical procedures. These analytical procedures fall into three broad categories or methods: (1) performance-based methods; (2) volumetric-based methods; and (3) analogy. These methods may be used individually or in combination by the reserves evaluator in the process of estimating the quantities of reserves. Reserves evaluators must select the method or combination of methods which in their professional judgment is most appropriate given the nature and amount of reliable geoscience and engineering data available at the time of the estimate, the established or anticipated performance characteristics of the reservoir being evaluated, and the stage of development or producing maturity of the property.

In many cases, the analysis of the available geoscience and engineering data and the subsequent interpretation of this data may indicate a range of possible outcomes in an estimate, irrespective of the method selected by the evaluator. When a range in the quantity of reserves is identified, the evaluator must determine the uncertainty associated with the incremental quantities of the reserves. If the reserves quantities are estimated using the deterministic incremental approach, the uncertainty for each discrete incremental quantity of the reserves is addressed by the reserves category assigned by the evaluator. Therefore, it is the categorization of reserves quantities as proved, probable and/or possible that addresses the inherent uncertainty in the estimated quantities reported. For proved reserves, uncertainty is defined by the SEC as reasonable certainty wherein the “quantities actually recovered are much more likely than not to be achieved.” The SEC states that “probable reserves are those additional reserves that are less certain to be recovered than proved reserves but which, together with proved reserves, are as likely as not to be recovered.” The SEC states that “possible reserves are those additional reserves that are less certain to be recovered than probable reserves and the total quantities ultimately recovered from a project

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 5

have a low probability of exceeding proved plus probable plus possible reserves.” All quantities of reserves within the same reserves category must meet the SEC definitions as noted above.

Estimates of reserves quantities and their associated reserves categories may be revised in the future as additional geoscience or engineering data become available. Furthermore, estimates of reserves quantities and their associated reserves categories may also be revised due to other factors such as changes in economic conditions, results of future operations, effects of regulation by governmental agencies or geopolitical or economic risks as previously noted herein.

The proved reserves for the properties included herein were estimated by performance methods, analogy, or a combination of methods. All of the proved producing reserves attributable to producing wells and/or reservoirs were estimated by performance methods. The performance methods, such as decline curve analysis, utilized extrapolations of historical production and pressure data available through December 2018 in those cases where such data were considered to be definitive. The data utilized in this analysis were furnished to Ryder Scott by Carrizo or obtained from public data sources and were considered sufficient for the purpose thereof.

All of the proved undeveloped reserves included herein were estimated by analogy. The analogs utilized data furnished to Ryder Scott by Carrizo or which we have obtained from public data sources that were available through December 2018.

To estimate economically recoverable proved oil and gas reserves and related future net cash flows, we consider many factors and assumptions including, but not limited to, the use of reservoir parameters derived from geological, geophysical and engineering data which cannot be measured directly, economic criteria based on current costs and SEC pricing requirements, and forecasts of future production rates. Under the SEC regulations 210.4-10(a)(22)(v) and (26), proved reserves must be anticipated to be economically producible from a given date forward based on existing economic conditions including the prices and costs at which economic producibility from a reservoir is to be determined. While it may reasonably be anticipated that the future prices received for the sale of production and the operating costs and other costs relating to such production may increase or decrease from those under existing economic conditions, such changes were, in accordance with rules adopted by the SEC, omitted from consideration in making this evaluation.

Carrizo has informed us that they have furnished us all of the material accounts, records, geological and engineering data, and reports and other data required for this investigation. In preparing our forecast of future proved production and income, we have relied upon data furnished by Carrizo with respect to property interests, production and well tests from examined wells, normal direct costs of operating the wells or leases, other costs such as transportation and/or processing fees, ad valorem and production taxes, recompletion and development costs, development plans, abandonment costs after salvage, product prices based on the SEC regulations, adjustments or differentials to product prices, geological structural and isochore maps, well logs, core analyses, and pressure measurements. Ryder Scott reviewed such factual data for its reasonableness; however, we have not conducted an independent verification of the data furnished by Carrizo. We consider the factual data used in this report appropriate and sufficient for the purpose of preparing the estimates of reserves and future net revenues herein.

In summary, we consider the assumptions, data, methods and analytical procedures used in this report appropriate for the purpose hereof, and we have used all such methods and procedures that we consider necessary and appropriate to prepare the estimates of reserves herein. The proved reserves included herein were determined in conformance with the United States Securities and Exchange Commission (SEC) Modernization of Oil and Gas Reporting; Final Rule, including all references to Regulation S-X and Regulation S-K, referred to herein collectively as the “SEC Regulations.” In our opinion,

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 6

the proved reserves presented in this report comply with the definitions, guidelines and disclosure requirements as required by the SEC regulations.

Future Production Rates

For wells currently on production, our forecasts of future production rates are based on historical performance data. If no production decline trend has been established, future production rates were held constant, or adjusted for the effects of curtailment where appropriate, until a decline in ability to produce was anticipated. An estimated rate of decline was then applied to depletion of the reserves. If a decline trend has been established, this trend was used as the basis for estimating future production rates.

Test data and other related information were used to estimate the anticipated initial production rates for those wells or locations that are not currently producing. For reserves not yet on production, sales were estimated to commence at an anticipated date furnished by Carrizo. Wells or locations that are not currently producing may start producing earlier or later than anticipated in our estimates due to unforeseen factors causing a change in the timing to initiate production. Such factors may include delays due to weather, the availability of rigs, the sequence of drilling, completing and/or recompleting wells and/or constraints set by regulatory bodies.

The future production rates from wells currently on production or wells or locations that are not currently producing may be more or less than estimated because of changes including, but not limited to, reservoir performance, operating conditions related to surface facilities, compression and artificial lift, pipeline capacity and/or operating conditions, producing market demand and/or allowables or other constraints set by regulatory bodies.

Hydrocarbon Prices

The hydrocarbon prices used herein are based on SEC price parameters using the average prices during the 12-month period prior to the “as of date” of this report, determined as the unweighted arithmetic averages of the prices in effect on the first-day-of-the-month for each month within such period, unless prices were defined by contractual arrangements. For hydrocarbon products sold under contract, the contract prices, including fixed and determinable escalations, exclusive of inflation adjustments, were used until expiration of the contract. Upon contract expiration, the prices were adjusted to the 12-month unweighted arithmetic average as previously described.

Carrizofurnished us with the above mentioned average prices in effect on December 31, 2018. These initial SEC hydrocarbon prices were determined using the 12-month average first-day-of-the-month benchmark prices appropriate to the geographic area where the hydrocarbons are sold. These benchmark prices are prior to the adjustments for differentials as described herein. The table below summarizes the “benchmark prices” and “price reference” used for the geographic area included in the report.

The product prices which were actually used to determine the future gross revenue for each property reflect adjustments to the benchmark prices for gravity, quality, local conditions, and/or distance from market, referred to herein as “differentials.” The differentials used in the preparation of this report were furnished to us by Carrizo. The differentials furnished to us were accepted as factual data and reviewed by us for their reasonableness; however, we have not conducted an independent verification of the data used by Carrizo to determine these differentials.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 7

In addition, the table below summarizes the net volume weighted benchmark prices adjusted for differentials and referred to herein as the “average realized prices.” The average realized prices shown in the table below were determined from the total future gross revenue before production taxes and the total net reserves for the geographic area and presented in accordance with SEC disclosure requirements for each of the geographic areas included in the report.

Geographic Area	Product	Price Reference	Average Benchmark Prices	Average Realized Prices
United States	Oil/Condensate	WTI Cushing	$65.56/bbl	$63.80/bbl
	NGLs	WTI Cushing	$65.56/bbl*	$26.15/bbl
	Gas	Henry Hub	$3.10/MMBTU	$2.46/Mcf

*NGL Prices are calculated as a percentage of oil price.

The effects of derivative instruments designated as price hedges of oil and gas quantities are not reflected in our individual property evaluations.

Costs

Operating costs for the leases and wells in this report are based on the operating expense reports of Carrizo and include only those costs directly applicable to the leases or wells. The operating costs include a portion of general and administrative costs allocated directly to the leases and wells. For operated properties, the operating costs include an appropriate level of corporate general administrative and overhead costs. The operating costs for non-operated properties include the COPAS overhead costs that are allocated directly to the leases and wells under terms of operating agreements. No deduction was made for loan repayments, interest expenses, or exploration and development prepayments that were not charged directly to the leases or wells.

Development costs were furnished to us by Carrizo and are based on authorizations for expenditure for the proposed work or actual costs for similar projects. The development costs furnished to us were accepted as factual data and reviewed by us for their reasonableness; however, we have not conducted an independent verification of these costs. The estimated net cost of abandonment after salvage was included for properties where abandonment costs net of salvage were material. The estimates of the net abandonment costs furnished by Carrizo were accepted without independent verification.

The proved undeveloped reserves in this report have been incorporated herein in accordance with Carrizo’s plans to develop these reserves as of December 31, 2018. The implementation of Carrizo’s development plans as presented to us and incorporated herein is subject to the approval process adopted by Carrizo’s management. As the result of our inquiries during the course of preparing this report, Carrizo has informed us that the development activities included herein have been subjected to and received the internal approvals required by Carrizo’s management at the appropriate local, regional and/or corporate level. In addition to the internal approvals as noted, certain development activities may still be subject to specific partner AFE processes, Joint Operating Agreement (JOA) requirements or other administrative approvals external to Carrizo. Carrizo has provided written documentation supporting their commitment to proceed with the development activities as presented to us. Additionally, Carrizo has informed us that they are not aware of any legal, regulatory or political obstacles that would significantly alter their plans. While these plans could change from those under existing economic conditions as of December 31, 2018,

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 8

such changes were, in accordance with rules adopted by the SEC, omitted from consideration in making this evaluation.

Current costs used by Carrizo were held constant throughout the life of the properties.

Standards of Independence and Professional Qualification

Ryder Scott is an independent petroleum engineering consulting firm that has been providing petroleum consulting services throughout the world since 1937. Ryder Scott is employee-owned and maintains offices in Houston, Texas; Denver, Colorado; and Calgary, Alberta, Canada. We have approximately eighty engineers and geoscientists on our permanent staff. By virtue of the size of our firm and the large number of clients for which we provide services, no single client or job represents a material portion of our annual revenue. We do not serve as officers or directors of any privately-owned or publicly-traded oil and gas company and are separate and independent from the operating and investment decision-making process of our clients. This allows us to bring the highest level of independence and objectivity to each engagement for our services.

Ryder Scott actively participates in industry-related professional societies and organizes an annual public forum focused on the subject of reserves evaluations and SEC regulations. Many of our staff have authored or co-authored technical papers on the subject of reserves related topics. We encourage our staff to maintain and enhance their professional skills by actively participating in ongoing continuing education.

Prior to becoming an officer of the Company, Ryder Scott requires that staff engineers and geoscientists have received professional accreditation in the form of a registered or certified professional engineer’s license or a registered or certified professional geoscientist’s license, or the equivalent thereof, from an appropriate governmental authority or a recognized self-regulating professional organization. Regulating agencies require that, in order to maintain active status, a certain amount of continuing education hours be completed annually, including an hour of ethics training. Ryder Scott fully supports this technical and ethics training with our internal requirement mentioned above.

We are independent petroleum engineers with respect to Carrizo. Neither we nor any of our employees have any financial interest in the subject properties and neither the employment to do this work nor the compensation is contingent on our estimates of reserves for the properties which were reviewed.

The results of this study, presented herein, are based on technical analysis conducted by teams of geoscientists and engineers from Ryder Scott. The professional qualifications of the undersigned, the technical person primarily responsible for overseeing, reviewing and approving the evaluation of the reserves information discussed in this report, are included as an attachment to this letter.

Terms of Usage

The results of our third party study, presented in report form herein, were prepared in accordance with the disclosure requirements set forth in the SEC regulations and intended for public disclosure as an exhibit in filings made with the SEC by Carrizo.

Carrizo makes periodic filings on Form 10-K with the SEC under the 1934 Exchange Act. Furthermore, Carrizo has certain registration statements filed with the SEC under the 1933 Securities Act into which any subsequently filed Form 10-K is incorporated by reference. We have consented to the

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Carrizo Oil & Gas, Inc.

February 8, 2019

Page 9

incorporation by reference in the registration statements on Form S-3 and Form S-8 of Carrizo of the references to our name as well as to the references to our third party report for Carrizo, which appears in the December 31, 2018, annual report on Form 10-K of Carrizo. Our written consent for such use is included as a separate exhibit to the filings made with the SEC by Carrizo.

We have provided Carrizo with a digital version of the original signed copy of this report letter. In the event there are any differences between the digital version included in filings made by Carrizo and the original signed report letter, the original signed report letter shall control and supersede the digital version.

The data and work papers used in the preparation of this report are available for examination by authorized parties in our offices. Please contact us if we can be of further service.

Very truly yours,

RYDER SCOTT COMPANY, L.P.

TBPE Firm Registration No. F-1580

/s/ Michael F. Stell

Michael F. Stell, P.E.

TBPE License No. 56416

Advising Senior Vice President

[SEAL]

MFS (DCR)/pl

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

Professional Qualifications of Primary Technical Person

The conclusions presented in this report are the result of technical analysis conducted by teams of geoscientists and engineers from Ryder Scott Company, L.P. Mr. Michael F. Stell was the primary technical person responsible for overseeing the estimate of the reserves, future production and income.

Mr. Stell, an employee of Ryder Scott Company, L.P. (Ryder Scott) since 1992, is an Advising Senior Vice President and is responsible for coordinating and supervising staff and consulting engineers of the company in ongoing reservoir evaluation studies worldwide. Before joining Ryder Scott, Mr. Stell served in a number of engineering positions with Shell Oil Company and Landmark Concurrent Solutions. For more information regarding Mr. Stell’s geographic and job specific experience, please refer to the Ryder Scott Company website at www.ryderscott.com/Company/Employees.

Mr. Stell earned a Bachelor of Science degree in Chemical Engineering from Purdue University in 1979 and a Master of Science Degree in Chemical Engineering from the University of California, Berkeley, in 1981. He is a licensed Professional Engineer in the State of Texas. He is also a member of the Society of Petroleum Engineers and the Society of Petroleum Evaluation Engineers.

In addition to gaining experience and competency through prior work experience, the Texas Board of Professional Engineers requires a minimum of fifteen hours of continuing education annually, including at least one hour in the area of professional ethics, which Mr. Stell fulfills. As part of his 2009 continuing education hours, Mr. Stell attended an internally presented 13hours of formalized training as well as a day-long public forum relating to the definitions and disclosure guidelines contained in the United States Securities and Exchange Commission Title 17, Code of Federal Regulations, Modernization of Oil and Gas Reporting, Final Rule released January 14, 2009 in the Federal Register. Mr. Stell attended an additional 15 hours of formalized in-house training as well as an additional five hours of formalized external training during 2009 covering such topics as the SPE/WPC/AAPG/SPEE Petroleum Resources Management System, reservoir engineering, geoscience and petroleum economics evaluation methods, procedures and software and ethics for consultants. As part of his 2010 continuing education hours, Mr. Stell attended an internally presented sixhours of formalized training and ten hours of formalized external training covering such topics as updates concerning the implementation of the latest SEC oil and gas reporting requirements, reserve reconciliation processes, overviews of the various productive basins of North America, evaluations of resource play reserves, evaluation of enhanced oil recovery reserves, and ethics training. For each year starting 2011 through 2018, as of the date of this report, Mr. Stell has 20 hours of continuing education hours relating to reserves, reserve evaluations, and ethics.

Based on his educational background, professional training and over 37 years of practical experience in the estimation and evaluation of petroleum reserves, Mr. Stell has attained the professional qualifications for a Reserves Estimator and Reserves Auditor set forth in Article III of the “Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information” promulgated by the Society of Petroleum Engineers as of February 19, 2007.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES DEFINITIONS

As Adapted From:

RULE 4-10(a) of REGULATION S-X PART 210

UNITED STATES SECURITIES AND EXCHANGE COMMISSION (SEC)

PREAMBLE

On January 14, 2009, the United States Securities and Exchange Commission (SEC) published the “Modernization of Oil and Gas Reporting; Final Rule” in the Federal Register of National Archives and Records Administration (NARA). The “Modernization of Oil and Gas Reporting; Final Rule” includes revisions and additions to the definition section in Rule 4-10 of Regulation S-X, revisions and additions to the oil and gas reporting requirements in Regulation S-K, and amends and codifies Industry Guide 2 in Regulation S-K. The “Modernization of Oil and Gas Reporting; Final Rule”, including all references to Regulation S-X and Regulation S-K, shall be referred to herein collectively as the “SEC regulations”. The SEC regulations take effect for all filings made with the United States Securities and Exchange Commission as of December 31, 2009, or after January 1, 2010. Reference should be made to the full text under Title 17, Code of Federal Regulations, Regulation S-X Part 210, Rule 4-10(a) for the complete definitions (direct passages excerpted in part or wholly from the aforementioned SEC document are denoted in italics herein).

Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations. All reserve estimates involve an assessment of the uncertainty relating the likelihood that the actual remaining quantities recovered will be greater or less than the estimated quantities determined as of the date the estimate is made. The uncertainty depends chiefly on the amount of reliable geologic and engineering data available at the time of the estimate and the interpretation of these data. The relative degree of uncertainty may be conveyed by placing reserves into one of two principal classifications, either proved or unproved. Unproved reserves are less certain to be recovered than proved reserves and may be further sub-classified as probable and possible reserves to denote progressively increasing uncertainty in their recoverability. Under the SEC regulations as of December 31, 2009, or after January 1, 2010, a company may optionally disclose estimated quantities of probable or possible oil and gas reserves in documents publicly filed with the SEC. The SEC regulations continue to prohibit disclosure of estimates of oil and gas resources other than reserves and any estimated values of such resources in any document publicly filed with the SEC unless such information is required to be disclosed in the document by foreign or state law as noted in §229.1202 Instruction to Item 1202.

Reserves estimates will generally be revised only as additional geologic or engineering data become available or as economic conditions change.

Reserves may be attributed to either natural energy or improved recovery methods. Improved recovery methods include all methods for supplementing natural energy or altering natural forces in the reservoir to increase ultimate recovery. Examples of such methods are pressure maintenance, natural gas cycling, waterflooding, thermal methods, chemical flooding, and the use of miscible and immiscible displacement fluids. Other improved recovery methods may be developed in the future as petroleum technology continues to evolve.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDELINES

Page 2

Reserves may be attributed to either conventional or unconventional petroleum accumulations. Petroleum accumulations are considered as either conventional or unconventional based on the nature of their in-place characteristics, extraction method applied, or degree of processing prior to sale. Examples of unconventional petroleum accumulations include coalbed or coalseam methane (CBM/CSM), basin-centered gas, shale gas, gas hydrates, natural bitumen and oil shale deposits. These unconventional accumulations may require specialized extraction technology and/or significant processing prior to sale.

Reserves do not include quantities of petroleum being held in inventory.

Because of the differences in uncertainty, caution should be exercised when aggregating quantities of petroleum from different reserves categories.

RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(26) defines reserves as follows:

Reserves. Reserves are estimated remaining quantities of oil and gas and related substances anticipated to be economically producible, as of a given date, by application of development projects to known accumulations. In addition, there must exist, or there must be a reasonable expectation that there will exist, the legal right to produce or a revenue interest in the production, installed means of delivering oil and gas or related substances to market, and all permits and financing required to implement the project.

Note to paragraph (a)(26): Reserves should not be assigned to adjacent reservoirs isolated by major, potentially sealing, faults until those reservoirs are penetrated and evaluated as economically producible. Reserves should not be assigned to areas that are clearly separated from a known accumulation by a non-productive reservoir (i.e., absence of reservoir, structurally low reservoir, or negative test results). Such areas may contain prospective resources (i.e., potentially recoverable resources from undiscovered accumulations).

PROVED RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(22) defines proved oil and gas reserves as follows:

Proved oil and gas reserves. Proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible—from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations—prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time.

(i) The area of the reservoir considered as proved includes:

(A) The area identified by drilling and limited by fluid contacts, if any, and

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDELINES

Page 3

(B) Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geoscience and engineering data.

(ii) In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons (LKH) as seen in a well penetration unless geoscience, engineering, or performance data and reliable technology establishes a lower contact with reasonable certainty.

(iii) Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering, or performance data and reliable technology establish the higher contact with reasonable certainty.

(iv) Reserves which can be produced economically through application of improved recovery techniques (including, but not limited to, fluid injection) are included in the proved classification when:

(A) Successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was based; and

(B) The project has been approved for development by all necessary parties and entities, including governmental entities.

(v) Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon future conditions.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDELINES

As Adapted From:

RULE 4-10(a) of REGULATION S-X PART 210

UNITED STATES SECURITIES AND EXCHANGE COMMISSION (SEC)

and

2018 PETROLEUM RESOURCES MANAGEMENT SYSTEM (SPE-PRMS)

Sponsored and Approved by:

SOCIETY OF PETROLEUM ENGINEERS (SPE)

WORLD PETROLEUM COUNCIL (WPC)

AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS (AAPG)

SOCIETY OF PETROLEUM EVALUATION ENGINEERS (SPEE)

SOCIETY OF EXPLORATION GEOPHYSICISTS (SEG)

SOCIETY OF PETROPHYSICISTS AND WELL LOG ANALYSTS (SPWLA)

EUROPEAN ASSOCIATION OF GEOSCIENTISTS & ENGINEERS (EAGE)

Reserves status categories define the development and producing status of wells and reservoirs. Reference should be made to Title 17, Code of Federal Regulations, Regulation S-X Part 210, Rule 4-10(a) and the SPE-PRMS as the following reserves status definitions are based on excerpts from the original documents (direct passages excerpted from the aforementioned SEC and SPE-PRMS documents are denoted in italics herein).

DEVELOPED RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(6) defines developed oil and gas reserves as follows:

Developed oil and gas reserves are reserves of any category that can be expected to be recovered:

(i) Through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well; and

(ii) Through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is by means not involving a well.

Developed Producing (SPE-PRMS Definitions)

While not a requirement for disclosure under the SEC regulations, developed oil and gas reserves may be further sub-classified according to the guidance contained in the SPE-PRMS as Producing or Non-Producing.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

PETROLEUM RESERVES STATUS DEFINITIONS AND GUIDELINES

Page 2

Developed Producing Reserves

Developed Producing Reserves are expected quantities to be recovered from completion intervals that are open and producing at the effective date of the estimate.

Improved recovery reserves are considered producing only after the improved recovery project is in operation.

Developed Non-Producing

Developed Non-Producing Reserves include shut-in and behind-pipe Reserves.

Shut-In

Shut-in Reserves are expected to be recovered from:

(1) completion intervals that are open at the time of the estimate but which have not yet started producing;

(2) wells which were shut-in for market conditions or pipeline connections; or

(3) wells not capable of production for mechanical reasons.

Behind-Pipe

Behind-pipe Reserves are expected to be recovered from zones in existing wells that will require additional completion work or future re-completion before start of production with minor cost to access these reserves.

In all cases, production can be initiated or restored with relatively low expenditure compared to the cost of drilling a new well.

UNDEVELOPED RESERVES (SEC DEFINITIONS)

Securities and Exchange Commission Regulation S-X §210.4-10(a)(31) defines undeveloped oil and gas reserves as follows:

Undeveloped oil and gas reserves are reserves of any category that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion.

(i) Reserves on undrilled acreage shall be limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility at greater distances.

(ii) Undrilled locations can be classified as having undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances, justify a longer time.

(iii) Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir, as defined in paragraph (a)(2) of this section, or by other evidence using reliable technology establishing reasonable certainty.

RYDER SCOTT COMPANY PETROLEUM CONSULTANTS

XML

Document And Entity Information - USD ($) $ / shares in Units, $ in Billions	12 Months Ended
	Dec. 31, 2018	Feb. 22, 2019	Jun. 29, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Registrant Name	CARRIZO OIL & GAS INC
Entity Central Index Key	0001040593
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		91,627,738
Share Price			$ 27.85
Entity Public Float			$ 2.2
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false

XML

Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 2,282,000	$ 9,540,000
Accounts receivable, net	99,723,000	107,441,000
Derivative assets	39,904,000	0
Other current assets	8,460,000	5,897,000
Total current assets	150,369,000	122,878,000
Oil and gas properties, full cost method
Proved properties, net	2,333,470,000	1,965,347,000
Unproved properties, not being amortized	673,833,000	660,287,000
Other property and equipment, net	11,221,000	10,176,000
Total property and equipment, net	3,018,524,000	2,635,810,000
Other long-term assets	16,207,000	19,616,000
Total Assets	3,185,100,000	2,778,304,000
Current liabilities
Accounts payable	98,811,000	74,558,000
Revenues and royalties payable	49,003,000	52,154,000
Accrued capital expenditures	60,004,000	119,452,000
Accrued interest	18,377,000	28,362,000
Derivative liabilities	55,205,000	57,121,000
Other current liabilities	40,609,000	41,175,000
Total current liabilities	322,009,000	372,822,000
Long-term debt	1,633,591,000	1,629,209,000
Asset retirement obligations	18,360,000	23,497,000
Derivative liabilities	40,817,000	112,332,000
Deferred Tax Liabilities, Net	8,017,000	3,635,000
Other long-term liabilities	6,980,000	51,650,000
Liabilities	2,029,774,000	2,193,145,000
Commitments and contingencies
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	174,422,000	214,262,000
Shareholders’ equity
Common stock, $0.01 par value, 180,000,000 shares authorized; 91,627,738 issued and outstanding as of December 31, 2018 and 81,454,621 issued and outstanding as of December 31, 2017	916,000	815,000
Additional paid-in capital	2,131,535,000	1,926,056,000
Accumulated deficit	(1,151,547,000)	(1,555,974,000)
Total shareholders’ equity	980,904,000	370,897,000
Total Liabilities and Shareholders’ Equity	$ 3,185,100,000	$ 2,778,304,000

XML

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Temporary Equity, Shares Authorized	10,000,000	10,000,000
Temporary Equity, Shares Issued	200,000	250,000
Temporary Equity, Shares Outstanding	200,000	250,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	180,000,000	180,000,000
Common stock, shares issued (in shares)	91,627,738	81,454,621
Common stock, shares outstanding (in shares)	91,627,738	81,454,621

XML

Consolidated Statements Of Operations - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues	$ 1,065,942,000	$ 745,888,000	$ 443,594,000
Total revenues	1,065,942,000	745,888,000	443,594,000
Costs and Expenses
Lease operating	161,596,000	139,854,000	98,717,000
Production taxes	50,591,000	32,509,000	19,046,000
Ad valorem taxes	10,422,000	7,267,000	5,559,000
Depreciation, depletion and amortization	299,530,000	262,589,000	213,962,000
General and administrative, net	68,617,000	66,229,000	74,972,000
(Gain) loss on derivatives, net	(6,709,000)	59,103,000	49,073,000
Interest expense, net	62,413,000	80,870,000	79,403,000
Impairment of proved oil and gas properties	0	0	576,540,000
Loss on extinguishment of debt	9,586,000	4,170,000	0
Other expense, net	296,000	2,157,000	1,796,000
Total costs and expenses	656,342,000	654,748,000	1,119,068,000
OTHER INCOME AND EXPENSES
Income (Loss) Before Income Taxes	409,600,000	91,140,000	(675,474,000)
Income tax expense	(5,173,000)	(4,030,000)	0
Net Income (Loss)	404,427,000	87,110,000	(675,474,000)
Dividends on preferred stock	(18,161,000)	(7,781,000)	0
Accretion on preferred stock	(3,057,000)	(862,000)	0
Gain (Loss) On Redemption Of Preferred Stock	(7,133,000)	0	0
Net Income (Loss) Attributable to Common Shareholders	$ 376,076,000	$ 78,467,000	$ (675,474,000)
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Net income (loss) per share, basic (in dollars per share)	$ 4.40	$ 1.07	$ (11.27)
Net Income (Loss) Attributable to Common Shareholders Per Common Share - Diluted
Net income (loss) per share, diluted (in dollars per share)	$ 4.32	$ 1.06	$ (11.27)
Weighted Average Common Shares Outstanding
Basic (in shares)	85,509	73,421	59,932
Diluted (in shares)	87,143	73,993	59,932
Oil and Condensate
Revenues	$ 911,554,000	$ 633,233,000	$ 378,073,000
Natural Gas Liquids
Revenues	96,585,000	47,405,000	22,428,000
Natural Gas
Revenues	$ 57,803,000	$ 65,250,000	$ 43,093,000

XML

Consolidated Statements Of Shareholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]
Total shareholders' equity at Dec. 31, 2015	$ 444,054,000	$ 583,000	$ 1,411,081,000	$ (967,610,000)
Total shareholders' equity, shares at Dec. 31, 2015		58,332,993
Stock-based compensation expense	31,194,000		31,194,000
Issuance of common stock upon grants of employee stock awards or units	(55,000)	$ 8,000	(63,000)
Issuance of common stock upon grants of employee stock awards or units, shares		799,506
Sale of common stock, net of offering costs	$ 223,739,000	$ 60,000	223,679,000
Sale of common stock, net of offering costs, shares	6,000,000	6,000,000
Dividends on preferred stock	$ 0
Accretion on preferred stock	0
Gain (Loss) On Redemption Of Preferred Stock	0
Net income (loss)	(675,474,000)			(675,474,000)
Total shareholders' equity at Dec. 31, 2016	23,458,000	$ 651,000	1,665,891,000	(1,643,084,000)
Total shareholders' equity, shares at Dec. 31, 2016		65,132,499
Stock-based compensation expense	23,625,000		23,625,000
Issuance of common stock upon grants of employee stock awards or units	(34,000)	$ 8,000	(42,000)
Issuance of common stock upon grants of employee stock awards or units, shares		722,122
Sale of common stock, net of offering costs	$ 222,378,000	$ 156,000	222,222,000
Sale of common stock, net of offering costs, shares	15,600,000	15,600,000
Proceeds from Issuance of Warrants	$ 23,003,000		23,003,000
Dividends on preferred stock	(7,781,000)		(7,781,000)
Accretion on preferred stock	(862,000)		(862,000)
Gain (Loss) On Redemption Of Preferred Stock	0
Net income (loss)	87,110,000			87,110,000
Total shareholders' equity at Dec. 31, 2017	370,897,000	$ 815,000	1,926,056,000	(1,555,974,000)
Total shareholders' equity, shares at Dec. 31, 2017		81,454,621
Stock-based compensation expense	20,412,000		20,412,000
Issuance of common stock upon grants of employee stock awards or units	(227,000)	$ 6,000	(233,000)
Issuance of common stock upon grants of employee stock awards or units, shares		673,117
Sale of common stock, net of offering costs	$ 213,746,000	$ 95,000	213,651,000
Sale of common stock, net of offering costs, shares	9,500,000	9,500,000
Dividends on preferred stock	$ (18,161,000)		(18,161,000)
Accretion on preferred stock	(3,057,000)		(3,057,000)
Gain (Loss) On Redemption Of Preferred Stock	(7,133,000)		(7,133,000)
Net income (loss)	404,427,000			404,427,000
Total shareholders' equity at Dec. 31, 2018	$ 980,904,000	$ 916,000	$ 2,131,535,000	$ (1,151,547,000)
Total shareholders' equity, shares at Dec. 31, 2018		91,627,738

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Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows From Operating Activities
Net income (loss)	$ 404,427	$ 87,110	$ (675,474)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation, depletion and amortization	299,530	262,589	213,962
Impairment of proved oil and gas properties	0	0	576,540
(Gain) loss on derivatives, net	(6,709)	59,103	49,073
Cash received (paid) for derivative settlements, net	(96,307)	7,773	119,369
Loss on extinguishment of debt	9,586	4,170	0
Stock-based compensation expense, net	13,524	14,309	36,086
Deferred income tax expense	4,381	3,635	0
Non-cash interest expense, net	2,567	3,657	4,172
Other, net	4,216	2,337	3,753
Changes in components of working capital and other assets and liabilities-
Accounts receivable	24,008	(41,630)	(12,836)
Accounts payable	16,013	11,822	(30,130)
Accrued liabilities	(19,154)	11,512	(7,938)
Other assets and liabilities, net	(2,527)	(3,406)	(3,809)
Net cash provided by operating activities	653,555	422,981	272,768
Cash Flows From Investing Activities
Capital expenditures	(968,828)	(654,711)	(480,929)
Acquisitions of oil and gas properties	(204,854)	(695,774)	(153,521)
Proceeds from divestitures of oil and gas properties	381,434	197,564	15,564
Other, net	(3,720)	(6,531)	(946)
Net cash used in investing activities	(795,968)	(1,159,452)	(619,832)
Cash Flows From Financing Activities
Issuance of senior notes, net of issuance costs	0	245,418	0
Redemptions of senior notes and other long-term debt	(460,540)	(152,813)	0
Redemption of preferred stock	(50,030)	0	0
Borrowings under credit agreement	3,309,400	1,992,523	770,291
Repayments of borrowings under credit agreement	(2,856,269)	(1,788,223)	(683,291)
Payments of credit facility amendment fees	(1,674)	(4,469)	(1,330)
Sale of common stock, net of offering costs	213,746	222,378	223,739
Sale of preferred stock, net of issuance costs	0	236,404	0
Payments of dividends on preferred stock	(18,161)	(7,781)	0
Other, net	(1,317)	(1,620)	(1,069)
Net cash provided by financing activities	135,155	741,817	308,340
Net Increase (Decrease) in Cash and Cash Equivalents	(7,258)	5,346	(38,724)
Cash and Cash Equivalents, Beginning of Year	9,540	4,194	42,918
Cash and Cash Equivalents, End of Year	$ 2,282	$ 9,540	$ 4,194

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Nature Of Operations

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature Of Operations

1. Nature of Operations

Carrizo Oil & Gas, Inc. is a Houston-based energy company which, together with its subsidiaries (collectively, the “Company”), is actively engaged in the exploration, development, and production of crude oil, NGLs, and natural gas from resource plays located in the United States. The Company’s current operations are principally focused in proven, producing oil and gas plays in the Eagle Ford Shale in South Texas and the Permian Basin in West Texas.

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Summary Of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The consolidated financial statements include the accounts of the Company after elimination of intercompany transactions and balances and are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). The Company proportionately consolidates its undivided interests in oil and gas properties as well as investments in unincorporated entities, such as partnerships and limited liability companies where the Company, as a partner or member, has undivided interests in the oil and gas properties. Certain reclassifications have been made to prior period amounts to conform to the current period presentation. Such reclassifications had no material impact on prior period amounts.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods reported. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results.

Significant estimates include volumes of proved oil and gas reserves, which are used in calculating depreciation, depletion and amortization (“DD&A”) of proved oil and gas property costs, the present value of estimated future net revenues included in the full cost ceiling test, estimates of future taxable income used in assessing the realizability of deferred tax assets, and the estimated timing of cash outflows underlying asset retirement obligations. Oil and gas reserve estimates, and therefore calculations based on such reserve estimates, are subject to numerous inherent uncertainties, the accuracy of which, is a function of the quality and quantity of available data, the application of engineering and geological interpretation and judgment to available data and the interpretation of mineral leaseholds and other contractual arrangements, including adequacy of title and drilling requirements. These estimates also depend on assumptions regarding quantities and production rates of recoverable oil and gas reserves, oil and gas prices, timing and amounts of development costs and operating expenses, all of which will vary from those assumed in the Company’s estimates. Other significant estimates are involved in determining acquisition date fair values of assets acquired and liabilities assumed, impairments of unevaluated leasehold costs, fair values of commodity derivative assets and liabilities, fair values of contingent consideration arrangements, fair value of preferred stock upon issuance, grant date fair value of stock-based awards, and evaluating disputed claims, interpreting contractual arrangements and contingencies. Estimates are based on current assumptions that may be materially affected by the results of subsequent drilling and completion, testing and production as well as subsequent changes in oil and gas prices, interest rates and the market value and volatility of the Company’s common stock.

Cash and Cash Equivalents

Cash equivalents include highly liquid investments with original maturities of three months or less. Certain of the Company’s cash accounts are zero-balance controlled disbursement accounts that do not have the right of offset against the Company’s other cash balances. The outstanding checks written against these zero-balance accounts have been classified as a component of accounts payable in the consolidated balance sheets and totaled $70.4 million and $62.6 million as of December 31, 2018 and 2017, respectively.

Accounts Receivable

The Company’s accounts receivable consist primarily of receivables from crude oil, NGL, and natural gas purchasers and joint interest owners in properties the Company operates. The Company generally has the right to withhold future revenue distributions to recover past due receivables from joint interest owners. Generally, the Company’s receivables from the sale of crude oil are collected within one month and receivables from the sale of NGL and natural gas are collected within two months. The Company establishes an allowance for doubtful accounts when it determines it is probable that it will not collect all or a part of an accounts receivable balance. The Company assesses the collectability of its accounts receivable on a quarterly basis and adjusts the allowance as necessary using the specific identification method. The Company’s allowance for doubtful accounts and bad debt expense was immaterial for all periods presented.

Concentration of Credit Risk and Major Customers

The concentration of accounts receivable from entities in the oil and gas industry may impact the Company’s overall credit risk such that these entities may be similarly affected by changes in economic and other industry conditions. The Company generally does not require collateral from its purchasers or joint interest owners.

The Company does not believe the loss of any one of its purchasers would materially affect its ability to sell the oil and gas it produces as other purchasers are available in its primary areas of activity. The Company had the following major customers that represented 10% or more of its total revenues for at least one of the periods presented:

	Years Ended December 31,
	2018	2017	2016
Shell Trading (US) Company	73%	69%	56%
Flint Hills Resources, LP	*	*	15%

* - Less than 10% for the respective year.

The Company’s counterparties to its commodity derivative instruments include lenders under the Company’s credit agreement (“Lender Counterparty”) as well as counterparties who are not lenders under the Company’s credit agreement (“Non-Lender Counterparty”). As each Lender Counterparty has an investment grade credit rating and the Company has obtained a guaranty from each Non-Lender Counterparty’s parent company which has an investment grade credit rating, the Company believes it does not have significant credit risk with its commodity derivative instrument counterparties. Although the Company does not currently anticipate nonperformance from its counterparties, it continually monitors the credit ratings of each Lender Counterparty and each Non-Lender Counterparty’s parent company. The Company executes its derivative instruments with seventeen counterparties to minimize its credit exposure to any individual counterparty.

Oil and Gas Properties

Oil and gas properties are accounted for using the full cost method of accounting under which all productive and nonproductive costs directly associated with property acquisition, exploration and development activities are capitalized to cost centers established on a country-by-country basis. The internal cost of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities are capitalized to either proved or unproved oil and gas properties based on the type of activity. Internal costs related to production, general corporate overhead and similar activities are expensed as incurred.

Capitalized oil and gas property costs within a cost center are amortized on an equivalent unit-of-production method, converting natural gas to barrels of oil equivalent at the ratio of six thousand cubic feet of gas to one barrel of oil, which represents their approximate relative energy content. The equivalent unit-of-production amortization rate is computed on a quarterly basis by dividing current quarter production by proved oil and gas reserves at the beginning of the quarter then applying such amortization rate to proved oil and gas property costs, which includes estimated asset retirement costs, less accumulated amortization, plus the estimated future expenditures (based on current costs) to be incurred in developing proved reserves, net of estimated salvage values.

Unproved properties, not being amortized, include unevaluated leasehold and seismic costs associated with specific unevaluated properties and related capitalized interest. Individually significant unevaluated leaseholds are assessed on a quarterly basis to determine whether or not and to what extent proved reserves have been assigned to the properties or if an impairment has occurred, in which case the related costs along with associated capitalized interest are reclassified to proved oil and gas properties. Factors the Company considers in its impairment assessment include drilling results by the Company and other operators, the terms of oil and gas leases not held by production and drilling, completion, and infrastructure capital expenditure plans. Individually insignificant unevaluated leaseholds are grouped by major area and added to proved oil and gas properties based on the average primary lease term of the properties. Geological and geophysical costs not associated with specific prospects are recorded to proved oil and gas property costs as incurred. The amount of interest costs capitalized is determined on a quarterly basis based on the average balance of unproved properties and the weighted average interest rate of outstanding borrowings.

At the end of each quarter, the net book value of oil and gas properties, less related deferred income taxes, are limited to the “cost center ceiling” equal to (i) the sum of (a) the present value of estimated future net revenues from proved oil and gas reserves, less estimated future expenditures to be incurred in developing and producing the proved reserves computed using a discount factor of 10%, (b) the costs of unproved properties not being amortized, and (c) the lower of cost or estimated fair value of unproved properties included in the costs being amortized; less (ii) related income tax effects. Any excess of the net book value of oil and gas properties, less related deferred income taxes, over the cost center ceiling is recognized as an impairment of proved oil and gas properties. An impairment recognized in one period may not be reversed in a subsequent period even if higher commodity prices in the future result in a cost center ceiling in excess of the net book value of oil and gas properties, less related deferred income taxes.

The estimated future net revenues used in the cost center ceiling are calculated using the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the 12-month period prior to the end of the current quarter (“12-Month Average Realized Price”), held flat for the life of the production, except where different prices are fixed and determinable from applicable contracts for the remaining term of those contracts. Prices do not include the impact of commodity derivative instruments as the Company elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment.

Proceeds from the sale of proved and unproved oil and gas properties are recognized as a reduction of proved oil and gas property costs with no gain or loss recognized, unless the sale significantly alters the relationship between capitalized costs and proved reserves of oil and gas attributable to a cost center. For the years ended December 31, 2018, 2017 and 2016, the Company did not have any sales of oil and gas properties that significantly altered such relationship.

Depreciation of other property and equipment is recognized using the straight-line method based on estimated useful lives ranging from three to ten years.

Debt Issuance Costs

Debt issuance costs associated with the revolving credit facility are classified in “Other long-term assets” in the consolidated balance sheets and are amortized to interest expense on a straight-line basis over the term of the facility. Debt issuance costs associated with the senior notes are classified as a reduction of the related long-term debt in the consolidated balance sheets and are amortized to interest expense using the effective interest method over the terms of the related senior notes.

Financial Instruments

The Company’s financial instruments consist of cash and cash equivalents, receivables, payables, commodity derivative assets and liabilities, contingent consideration arrangements determined to be embedded derivatives and long-term debt. The carrying amounts of cash and cash equivalents, receivables and payables approximate fair value due to the highly liquid or short-term nature of these instruments. The fair values of the Company’s commodity derivative assets and liabilities are based on a third-party industry-standard pricing model using contract terms and prices and assumptions and inputs that are substantially observable in active markets throughout the full term of the instruments, including forward oil and gas price curves, discount rates, volatility factors and credit risk adjustments. The fair values of the Company’s contingent consideration arrangements are determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as future commodity prices, volatility factors for the future commodity prices and a risk adjusted discount rate.

The carrying amount of long-term debt associated with borrowings outstanding under the Company’s revolving credit facility approximates fair value as borrowings bear interest at variable rates. The carrying amounts of the Company’s senior notes and other long-term debt may not approximate fair value because carrying amounts are net of unamortized premiums and debt issuance costs, and the senior notes and other long-term debt bear interest at fixed rates. See “Note 6. Long-Term Debt” and “Note 13. Fair Value Measurements” for additional discussion.

Asset Retirement Obligations

The Company’s asset retirement obligations represent the present value of the estimated future costs associated with plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land in accordance with the terms of oil and gas leases and applicable local, state and federal laws. Determining asset retirement obligations requires estimates of the costs of plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land as well as estimates of the economic lives of the oil and gas wells and future inflation rates. The resulting estimate of future cash outflows are discounted using a credit-adjusted risk-free interest rate that corresponds with the timing of the cash outflows. Cost estimates consider historical experience, third party estimates, the requirements of oil and gas leases and applicable local, state and federal laws, but do not consider estimated salvage values. Asset retirement obligations are recognized when the well is drilled or acquired or when the production equipment and facilities are installed or acquired with an associated increase in proved oil and gas property costs. Asset retirement obligations are accreted each period through DD&A to their expected settlement values with any difference between the actual cost of settling the asset retirement obligations and recorded amount being recognized as an adjustment to proved oil and gas property costs. Cash paid to settle asset retirement obligations is included in net cash provided by operating activities in the consolidated statements of cash flows. On a quarterly basis, when indicators suggest there have been material changes in the estimates underlying the obligation, the Company reassesses its asset retirement obligations to determine whether any revisions to the obligations are necessary. At least annually, the Company reassesses all of its asset retirement obligations to determine whether any revisions to the obligations are necessary. Revisions typically occur due to changes in estimated costs or economic lives of the oil and gas wells, or if federal or state regulators enact new requirements regarding plugging and abandoning oil and gas wells. See “Note 7. Asset Retirement Obligations” for additional discussion.

Commitments and Contingencies

Liabilities are recognized for contingencies when (i) it is both probable that an asset has been impaired or that a liability has been incurred and (ii) the amount of such loss is reasonably estimable. See “Note 8. Commitments and Contingencies” for additional discussion.

Revenue Recognition

The Company’s revenues are comprised solely of revenues from customers and include the sale of crude oil, NGLs, and natural gas. The Company believes that the disaggregation of revenue into these three major product types appropriately depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors based on its single geographic location. Crude oil, NGL, and natural gas revenues are recognized at a point in time when production is sold to a purchaser at a fixed or determinable price, delivery has occurred, control has transferred and collectability of the revenue is probable. The transaction price used to recognize revenue is a function of the contract billing terms. Revenue is invoiced by calendar month based on volumes at contractually based rates with payment typically required within 30 days of the end of the production month. At the end of each month when the performance obligation is satisfied, the variable consideration can be reasonably estimated and amounts due from customers are accrued in “Accounts receivable, net” in the consolidated balance sheets. As of December 31, 2018 and December 31, 2017, receivables from contracts with customers were $77.1 million and $85.6 million, respectively. Taxes assessed by governmental authorities on crude oil, NGL, and natural gas sales are presented separately from such revenues in the consolidated statements of operations.

Crude oil sales. Crude oil production is primarily sold at the wellhead at an agreed upon index price, net of pricing differentials. Revenue is recognized when control transfers to the purchaser at the wellhead, net of transportation costs incurred by the purchaser.

Natural gas and NGL sales. Natural gas is delivered to a midstream processing entity at the wellhead or the inlet of the midstream processing entity’s system. The midstream processing entity gathers and processes the natural gas and remits proceeds for the resulting sales of NGLs and residue gas. The Company evaluates whether it is the principal or agent in the transaction and has concluded it is the principal and the purchasers of the NGLs and residue gas are the customers. Revenue is recognized on a gross basis, with gathering, processing and transportation fees recognized as lease operating expense in the consolidated statements of operations as the Company maintains control throughout processing.

Transaction Price Allocated to Remaining Performance Obligations. The Company applied the practical expedient in ASC 606 exempting the disclosure of the transaction price allocated to remaining performance obligations if the variable consideration is allocated entirely to a wholly unsatisfied performance obligation. Each unit of product typically represents a separate performance obligation, therefore, future volumes are wholly unsatisfied and disclosure of the transaction price allocated to remaining performance obligations is not required.

Derivative Instruments

The Company uses commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of its forecasted sales of production and achieve a more predictable level of cash flow. All commodity derivative instruments are recorded in the consolidated balance sheets as either an asset or liability measured at fair value. The Company nets its commodity derivative instrument fair value amounts executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to International Swap Dealers Association Master Agreements (“ISDAs”), which provide for net settlement over the term of the contract and in the event of default or termination of the contract. The Company does not enter into commodity derivative instruments for speculative purposes.

The Company has entered into agreements for acquisitions or divestitures of oil and gas properties that include obligations to pay the seller or rights to receive from the buyer, respectively, additional consideration if commodity prices exceed specified thresholds during certain periods in the future. These contingent consideration assets and liabilities are required to be bifurcated and accounted for separately as derivative instruments as they are not considered to be clearly and closely related to the host contract, and recognized at their acquisition or divestiture date fair value in the consolidated balance sheets.

The Company has elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment. Therefore, all gains and losses as a result of changes in the fair value of commodity derivative instruments, as well as its contingent consideration arrangements, are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the changes occur. Deferred premium obligations associated with the Company’s commodity derivative instruments are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the deferred premium obligations are incurred.

Cash flows are impacted to the extent that settlements of commodity derivative instruments, including deferred premium obligations, and contingent consideration arrangements result in cash received or paid during the period and are recognized as “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows. Cash received or paid in settlement of contingent consideration assets or liabilities, respectively, are classified as cash flows from financing activities up to the divestiture or acquisition date fair value with any excess classified as cash flows from operating activities.

The Company’s Board of Directors establishes risk management policies and, on a quarterly basis, reviews its commodity derivative instruments, including volumes, types of instruments and counterparties. These policies require that commodity derivative instruments be executed only by the President or Chief Financial Officer after consultation with and concurrence by the President, Chief Financial Officer and Chairman of the Board. See “Note 12. Derivative Instruments” for additional discussion.

Preferred Stock and Common Stock Warrants

The Company applies the accounting standards for distinguishing liabilities from equity when determining the classification and measurement of preferred stock. Preferred stock that is not mandatorily redeemable is excluded from liability classification and is evaluated for classification in shareholders’ equity or temporary equity. As the number of common shares that could be delivered upon the holders’ optional redemption is indeterminate, the Company cannot assert that it will be able to settle in shares of its common stock and, as a result, presents preferred stock as temporary equity. On a quarterly basis, the Company reassesses the presentation of preferred stock in the consolidated balance sheets.

When preferred stock is issued with common stock warrants, the common stock warrants are evaluated separately to determine if they are a freestanding financial instrument to determine whether they must be recorded as a derivative instrument. The Company further evaluates the common stock warrants for equity classification and has determined they qualify for equity classification and, therefore, are presented in additional paid-in capital in the consolidated balance sheets. The preferred stock and common stock warrants are recorded based on the net proceeds received allocated to the two instrument’s relative fair values. The preferred stock is subject to accretion from its relative fair value at the issuance date to the redemption value using the effective interest method. The common stock warrants do not require further adjustments from their relative fair value at the issuance date.

Dividends and accretion associated with preferred stock are presented in the consolidated statements of operations as reductions to net income, or increases of net loss, to derive net income (loss) attributable to common shareholders. Dividend payments are presented as a financing activity in the consolidated statement of cash flows.

See “Note 9. Preferred Stock and Common Stock Warrants” for further details of the Company’s outstanding preferred stock and common stock warrants.

Stock-Based Compensation

The Company recognized stock-based compensation expense, net of amounts capitalized to oil and gas properties associated with restricted stock awards and units, stock appreciation rights to be settled in cash (“Cash SARs”), and performance share awards, which is recognized as “General and administrative expense, net” in the consolidated statements of operations. The Company accounts for forfeitures of equity-based incentive awards as they occur. See “Note 11. Stock-Based Compensation” for further details of the awards discussed below.

Restricted Stock Awards and Units. Stock-based compensation expense is based on the price of the Company’s common stock on the grant date and recognized over the vesting period (generally one to three years) using the straight-line method, except for awards or units with performance conditions, in which case the Company uses the graded vesting method. For restricted stock awards and units granted to independent contractors, stock-based compensation expense is based on the fair value remeasured at each reporting period and recognized over the vesting period (generally three years) using the straight-line method, except for awards or units with performance conditions, in which case the Company uses the graded vesting method.

Stock Appreciation Rights. For Cash SARs, stock-based compensation expense is initially based on the grant date fair value determined using a Black-Scholes-Merton option pricing model, with the fair value liability subsequently remeasured at the end of each reporting period and recognized over the vesting period (generally two or three years) using the straight-line method, except for Cash SARs with performance conditions, in which case the Company uses the graded vesting method. For periods subsequent to vesting and prior to exercise, stock-based compensation expense is based on the fair value liability remeasured at the end of each reporting period based on the intrinsic value of the Cash SAR. The liability for Cash SARs is classified as “Other current liabilities” for the portion of the fair value liability attributable to awards that are vested or are expected to vest within the next 12 months, with the remainder classified as “Other long-term liabilities” in the consolidated balance sheets. Cash SARs typically expire between five and seven years after the date of grant. If Cash SARs expire unexercised, the cumulative compensation costs associated with such Cash SARs will be zero.

Performance Shares. For performance shares, stock-based compensation expense is based on the grant date fair value determined using a Monte Carlo valuation model and recognized over an approximate three year vesting period using the straight-line method. Each performance share represents the right to receive one share of common stock, however, the number of performance shares that vest ranges from zero to 200% of the target performance shares granted based on the total shareholder return (“TSR”) of the Company’s common stock relative to the TSR achieved by a specified industry peer group over an approximate three year performance period, the last day of which is also the vesting date. Compensation costs related to the performance shares will be recognized if the requisite service period is fulfilled and the performance condition is met, even if the market condition is not achieved.

Income Taxes

Income taxes are recognized based on earnings reported for tax return purposes in addition to a provision for deferred income taxes. Deferred income taxes are recognized at the end of each reporting period for the future tax consequences of cumulative temporary differences between the tax basis of assets and liabilities and their reported amounts in the Company’s consolidated financial statements based on existing tax laws and enacted statutory tax rates applicable to the periods in which the temporary differences are expected to affect taxable income. The Company assesses the realizability of its deferred tax assets on a quarterly basis by considering all available evidence (both positive and negative) to determine whether it is more likely than not that all or a portion of the deferred tax assets will not be realized and a valuation allowance is required. In making this assessment, the Company evaluates possible sources of taxable income that may be available to realize the deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies. See “Note 5. Income Taxes” for further discussion of the deferred tax assets valuation allowance. The Company classifies interest and penalties associated with income taxes as interest expense. The Company applies the tax law ordering approach to determine the sequence in which deferred tax assets and other tax attributes are utilized.

Net Income (Loss) Attributable to Common Shareholders Per Common Share

Basic net income (loss) attributable to common shareholders per common share is based on the weighted average number of shares of common stock outstanding during the year. Diluted net income (loss) attributable to common shareholders per common share is based on the weighted average number of common shares and all potentially dilutive common shares outstanding during the year which include restricted stock awards and units, performance shares, and common stock warrants. The Company includes the number of restricted stock awards and units and common stock warrants in the calculation of diluted weighted average shares outstanding when the grant date or exercise prices are less than the average market prices of the Company’s common stock for the period. The Company includes the number of performance shares in the calculation of diluted weighted average common shares outstanding based on the number of shares, if any, that would be issuable as if the end of the period was the end of the performance period. The Company has excluded any impact of the preferred stock to the calculation of diluted weighted average common shares outstanding as it has the positive intent and ability to redeem the preferred stock in cash. When a loss attributable to common shareholders exists, all potentially dilutive common shares outstanding are anti-dilutive and therefore excluded from the calculation of diluted weighted average shares outstanding.

The following table summarizes the calculation of net income (loss) attributable to common shareholders per common share:

	Years Ended December 31,
	2018			2017			2016
	(In thousands, except per share amounts)
Net Income (Loss)		$404,427			$87,110			($675,474	)
Dividends on preferred stock	(18,161		)	(7,781		)	—
Accretion on preferred stock	(3,057		)	(862		)	—
Loss on redemption of preferred stock	(7,133		)	—			—
Net Income (Loss) Attributable to Common Shareholders		$376,076			$78,467			($675,474	)
Basic weighted average common shares outstanding	85,509			73,421			59,932
Dilutive effect of restricted stock and performance shares	949			269			—
Dilutive effect of common stock warrants	685			303			—
Diluted weighted average common shares outstanding	87,143			73,993			59,932
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$4.40			$1.07			($11.27	)
Diluted		$4.32			$1.06			($11.27	)

The computation of diluted net income attributable to common shareholders per common share excluded certain restricted stock and performance shares as the impacts were anti-dilutive. The following table presents the weighted average anti-dilutive securities for the periods presented:

	Years Ended December 31,
	2018	2017	2016
	(In thousands)
Anti-dilutive restricted stock and performance shares	19	52	669

Industry Segment and Geographic Information

The Company operates in only one industry segment, which is the exploration, development, and production of crude oil, NGLs, and natural gas. All of the Company’s operations are located in the United States and currently all revenues are attributable to customers located in the United States.

Recently Adopted Accounting Standards

Revenue From Contracts with Customers. Effective January 1, 2018, the Company adopted ASU No. 2014-09, Revenue From Contracts With Customers (Topic 606) (“ASC 606”) using the modified retrospective method and has applied the standard to all existing contracts. ASC 606 supersedes previous revenue recognition requirements in ASC 605 - Revenue Recognition (“ASC 605”) and includes a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration in exchange for those goods or services. As a result of adopting ASC 606, the Company did not have a cumulative-effect adjustment in retained earnings. The comparative information for the years ended December 31, 2017 and 2016 has not been recast and continues to be reported under the accounting standards in effect for that period. Additionally, adoption of ASC 606 did not impact net income attributable to common shareholders.

The tables below summarize the impact of adoption for the year ended December 31,2018:

	Year Ended December 31, 2018
	Under ASC 606		Under ASC 605		Increase		% Increase
	(In thousands)
Revenues
Crude oil		$911,554		$910,975		$579	0.1	%
Natural gas liquids	96,585		91,608		4,977		5.4	%
Natural gas	57,803		55,023		2,780		5.1	%
Total revenues	1,065,942		1,057,606		8,336		0.8	%
Costs and Expenses
Lease operating	161,596		153,260		8,336		5.4	%
Income Before Income Taxes		$409,600		$409,600		$—	—	%

Changes to crude oil, NGL, and natural gas revenues and lease operating expense are due to the conclusion that the Company controls the product throughout processing before transferring to the customer for certain natural gas processing arrangements. Therefore, any transportation, gathering, and processing fees incurred prior to transfer of control are included in lease operating expense.

Business Combinations. In January 2017, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which clarifies the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions (or divestitures) of assets or businesses. Effective January 1, 2018, the Company adopted ASU 2017-01 using the prospective method and applied the clarified definition of a business to subsequent acquisitions and divestitures.

Statement of Cash Flows. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”), which is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. The guidance addresses eight specific cash flow issues for which current GAAP is either unclear or does not include specific guidance. Effective January 1, 2018, the Company adopted ASU 2016-15 using the retrospective approach as prescribed by ASU 2016-15. There were no changes to the statement of cash flows as a result of adoption.

Stock Compensation. In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”), which amends certain aspects of accounting for share-based payment arrangements. ASU 2016-09 revises or provides alternative accounting for the tax impacts of share-based payment arrangements, forfeitures, minimum statutory tax withholdings, and prescribes certain disclosures to be made in the period of adoption.

Effective January, 1, 2017, the Company adopted ASU 2016-09. Using the modified retrospective approach as prescribed by ASU 2016-09, the Company recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets, which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative-effect adjustment to retained earnings of zero. Effective January 1, 2017, all windfall tax benefits and tax shortfalls are recorded as income tax expense or benefit in the consolidated statements of operations, whereas prior to adoption, windfall tax benefits were recorded as an increase to additional paid-in capital. In addition, windfall tax benefits, along with tax shortfalls, are now required to be classified as an operating cash flow as opposed to a financing cash flow. Further, the Company has elected to account for forfeitures of share-based payment awards as they occur, which resulted in an immaterial cumulative-effect adjustment to retained earnings.

Recently Issued Accounting Pronouncements

Leases. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which significantly changes accounting for leases by requiring that lessees recognize a right-of-use (“ROU”) asset and a related lease liability representing the obligation to make lease payments, for virtually all lease transactions. ASU 2016-02 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. Additional disclosures about an entity’s lease transactions will also be required. ASU 2016-02 defines a lease as “a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment (an identified asset) for a period of time in exchange for consideration.” ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018 with early adoption permitted. ASU 2016-02 requires companies to recognize and measure leases at the beginning of the earliest period presented in the financial statements using a modified retrospective approach.

The Company will adopt ASU 2016-02 effective January 1, 2019, using the modified retrospective approach. The Company will make certain elections allowing it to not reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for land easements, not to recognize ROU assets or lease liabilities for short-term leases, and will not separate lease components from non-lease components for specified asset classes. The Company has implemented a third party software which will be used to track and account for lease activity. As of December 31, 2018, the Company anticipates that the adoption of ASU 2016-02 will result in the recognition of ROU assets and lease liabilities on its consolidated balance sheets ranging from $75.0 million to $100.0 million primarily associated with office space contracts, drilling rig contracts, and contracts for the use of vehicles, information technology infrastructure and well equipment. However, the Company does not expect ASU 2016-02 to have a significant impact on its consolidated statements of operations or consolidated statements of cash flows. The Company is finalizing its accounting policies, controls, processes, and disclosures that will change as a result of adopting the new standard. As permitted by ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, the Company does not expect to adjust comparative-period financial statements.

Subsequent Events

The Company evaluates subsequent events through the date the financial statements are issued. See “Note 16. Subsequent Events” for further discussion.

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Acquisitions and Divestitures

12 Months Ended

Dec. 31, 2018

Acquisitions and Divestitures [Abstract]

Acquisitions and Divestitures Disclosures

3. Acquisitions and Divestitures of Oil and Gas Properties

2018 Acquisitions and Divestitures

Devon Acquisition. On August 13, 2018, the Company entered into a purchase and sale agreement with Devon Energy Production Company, L.P. (“Devon”), a subsidiary of Devon Energy Corporation, to acquire oil and gas properties in the Delaware Basin in Reeves and Ward counties, Texas (the “Devon Properties”) for an agreed upon price of $215.0 million, with an effective date of April 1, 2018, subject to customary purchase price adjustments (the “Devon Acquisition”). The Company paid $21.5 million as a deposit on August 13, 2018 and $183.4 million upon initial closing on October 17, 2018, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date. The Company estimates the aggregate purchase price will be $196.6 million, however, the final purchase price remains subject to post-closing adjustments. The Company funded the Devon Acquisition with net proceeds from the common stock offering completed on August 17, 2018, which, pending the closing of the Devon Acquisition, were used to temporarily repay a portion of the borrowings outstanding under the revolving credit facility. See “Note 10. Shareholders’ Equity” for further discussion.

The Devon Acquisition was accounted for as a business combination, therefore, the purchase price was allocated to the assets acquired and the liabilities assumed based on their estimated acquisition date fair values based on then currently available information. A combination of a discounted cash flow model and market data was used by a third-party valuation specialist in determining the fair value of the oil and gas properties. Significant inputs into the calculation included future commodity prices, estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs and a risk adjusted discount rate. The following presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.

	Preliminary Purchase Price Allocation
	(In thousands)
Assets
Oil and gas properties
Proved properties		$47,370
Unproved properties	150,253
Total oil and gas properties		$197,623
Total assets acquired		$197,623
Liabilities
Revenues and royalties payable		$855
Asset retirement obligations	170
Total liabilities assumed		$1,025
Net Assets Acquired		$196,598

The results of operations for the Devon Acquisition have been included in the Company’s consolidated statements of operations since the October 17, 2018 closing date, including total revenues $4.6 million and net income attributable to common shareholders of $2.7 million for the year ended December 31, 2018.

Pro Forma Operating Results (Unaudited). The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the years ended December 31, 2018 and 2017, assuming the Devon Acquisition had been completed as of January 1, 2017, including adjustments to reflect the acquisition date fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the Devon Acquisition.

	Years Ended December 31,
	2018		2017
	(In thousands, except per share amounts)
Total revenues		$1,086,742		$753,474
Net Income Attributable to Common Shareholders		$384,639		$78,118
Net Income Attributable to Common Shareholders Per Common Share
Basic		$4.21		$0.94
Diluted		$4.13		$0.94
Weighted Average Common Shares Outstanding
Basic	91,444		82,921
Diluted	93,077		83,493

Delaware Basin Divestiture. On July 11, 2018, the Company closed on the divestiture of certain non-operated assets in the Delaware Basin for an agreed upon price of $30.0 million, with an effective date of May 1, 2018, subject to customary purchase price adjustments. The Company received $31.4 million upon closing on July 11, 2018 and paid $0.5 million upon post-closing on October 22, 2018, for aggregate net proceeds of $30.9 million.

Eagle Ford Divestiture. On December 11, 2017, the Company entered into a purchase and sale agreement with EP Energy E&P Company, L.P. to sell a portion of its assets in the Eagle Ford Shale for an agreed upon price of $245.0 million, with an effective date of October 1, 2017, subject to adjustment and customary terms and conditions. The Company received $24.5 million as a deposit on December 11, 2017, $211.7 million upon closing on January 31, 2018, $10.0 million for leases that were not conveyed at closing on February 16, 2018, and paid $0.5 million upon post-closing on July 19, 2018, for aggregate net proceeds of $245.7 million.

Niobrara Divestiture.On November 20, 2017, the Company entered into a purchase and sale agreement to sell substantially all of its assets in the Niobrara Formation for an agreed upon price of $140.0 million, with an effective date of October 1, 2017, subject to customary purchase price adjustments. The Company received $14.0 million as a deposit on November 20, 2017, $122.6 million upon closing on January 19, 2018, and paid $1.0 million upon post-closing on August 14, 2018, for aggregate net proceeds of $135.6 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Niobrara Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

The aggregate net proceeds for each of the 2018 divestitures discussed above were recognized as a reduction of proved oil and gas properties with no gain or loss recognized.

2017 Acquisitions and Divestitures

ExL Acquisition. On June 28, 2017, the Company entered into a purchase and sale agreement with ExL Petroleum Management, LLC and ExL Petroleum Operating Inc. to acquire oil and gas properties located in the Delaware Basin in Reeves and Ward counties, Texas for an agreed upon price of $648.0 million, with an effective date of May 1, 2017, subject to customary purchase price adjustments (the “ExL Acquisition”). The Company paid $75.0 million as a deposit on June 28, 2017, $601.0 million upon closing on August 10, 2017 and $3.8 million upon post-closing on December 8, 2017, for an aggregate cash consideration of $679.8 million, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date. As part of the ExL Acquisition, the Company agreed to a contingent consideration arrangement (the “Contingent ExL Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

The Company funded the ExL Acquisition with net proceeds from the sale of preferred stock on August 10, 2017, net proceeds from the common stock offering completed on July 3, 2017, and net proceeds from the senior notes offering completed on July 14, 2017. See “Note 9. Preferred Stock and Common Stock Warrants”, “Note 10. Shareholders’ Equity” and “Note 6. Long-Term Debt” for further discussion.

The ExL Acquisition was accounted for as a business combination, therefore, the purchase price was allocated to the assets acquired and the liabilities assumed based on their estimated acquisition date fair values based on then currently available information. A combination of a discounted cash flow model and market data was used by a third-party valuation specialist in determining the fair value of the oil and gas properties. Significant inputs into the calculation included future commodity prices, estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs and a risk adjusted discount rate. The fair value of the Contingent ExL Consideration was determined by a third-party valuation specialist using a Monte Carlo simulation. Significant inputs into the calculation included future commodity prices, volatility factors for the future commodity prices and a risk adjusted discount rate. See “Note 13. Fair Value Measurements” for further discussion.

The following presents the final allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.

	Purchase Price Allocation
	(In thousands)
Assets
Other current assets		$106
Oil and gas properties
Proved properties	294,754
Unproved properties	443,194
Total oil and gas properties		$737,948
Total assets acquired		$738,054
Liabilities
Revenues and royalties payable		$5,785
Asset retirement obligations	153
Contingent ExL Consideration	52,300
Total liabilities assumed		$58,238
Net Assets Acquired		$679,816

The results of operations for the ExL Acquisition have been included in the Company’s consolidated statements of operations since the August 10, 2017 closing date, including total revenues and net income attributable to common shareholders for the years ended December 31, 2018 and 2017 as shown in the table below:

	Years Ended December 31,
	2018		2017
	(In thousands)
Total revenues		$225,135		$53,548
Net Income Attributable to Common Shareholders		$176,881		$44,304

Pro Forma Operating Results (Unaudited). The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the years ended December 31, 2017 and 2016, assuming the ExL Acquisition had been completed as of January 1, 2016, including adjustments to reflect the acquisition date fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the ExL Acquisition.

	Years Ended December 31,
	2017		2016
	(In thousands, except per share amounts)
Total revenues		$781,378		$454,913
Net Income (Loss) Attributable to Common Shareholders		$91,931		($688,180	)
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$1.25		($9.11	)
Diluted		$1.24		($9.11	)
Weighted Average Common Shares Outstanding
Basic	73,421		75,532
Diluted	73,993		75,532

Marcellus Divestiture. On October 5, 2017, the Company entered into a purchase and sale agreement with BKV Chelsea, LLC, a subsidiary of Kalnin Ventures LLC, to sell substantially all of its assets in the Marcellus Shale for an agreed upon price of $84.0 million. The Company received $6.3 million into escrow as a deposit on October 5, 2017 and $67.6 million upon closing on November 21, 2017, for aggregate net proceeds of $73.9 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Marcellus Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

Effective August 2008, the Company’s wholly-owned subsidiary, Carrizo (Marcellus) LLC, entered into a joint venture with ACP II Marcellus LLC (“ACP II”), an affiliate of Avista Capital Partners, LP, a private equity fund (Avista Capital Partners, LP, together with its affiliates, “Avista”). There have been no revenues, expenses, or operating cash flows in the Avista Marcellus joint venture during the years ended December 31, 2018, 2017, and 2016. The Avista Marcellus joint venture agreements terminated during the third quarter of 2018 in connection with the sale of the remaining immaterial assets.

Steven A. Webster, Chairman of the Company’s Board of Directors, serves as Co-Managing Partner and President of Avista Capital Holdings, LP, which has the ability to control Avista and its affiliates. ACP II’s Board of Managers has the sole authority for determining whether, when and to what extent any cash distributions will be declared and paid to members of ACP II. Mr. Webster is not a member of ACP II’s Board of Managers. The terms of the Avista Marcellus joint venture were approved by a special committee of the Company’s independent directors. Additionally, in 2018, the Company’s Board of Directors determined that Mr. Webster is independent with respect to the Company.

Utica Divestiture. On August 31, 2017, the Company entered into a purchase and sale agreement to sell substantially all of its assets in the Utica Shale for an agreed upon price of $62.0 million. The Company received $6.2 million as a deposit on August 31, 2017, $54.4 million upon closing on November 15, 2017, and $2.5 million upon post-closing on December 28, 2017, for aggregate net proceeds of $63.1 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Utica Consideration”), which was determined to be an embedded derivative. See “Note 12. Derivative Instruments” and “Note 13. Fair Value Measurements” for further discussion.

Delaware Basin Divestiture. During the first quarter of 2017, the Company sold a small undeveloped acreage position in the Delaware Basin for aggregate net proceeds of $15.3 million.

The aggregate net proceeds for each of the 2017 divestitures discussed above were recognized as a reduction of proved oil and gas properties with no gain or loss recognized.

2016 Acquisitions and Divestitures

Sanchez Acquisition. On October 24, 2016, the Company entered into a purchase and sale agreement with Sanchez Energy Corporation and SN Cotulla Assets, LLC, a subsidiary of Sanchez Energy Corporation to acquire oil and gas properties located in the Eagle Ford Shale for an agreed upon price of $181.0 million, with an effective date of June 1, 2016, subject to customary purchase price adjustments (the “Sanchez Acquisition”). The Company paid $10.0 million as a deposit on October 24, 2016, $143.5 million upon initial closing on December 14, 2016, and $7.0 million and $9.8 million on January 9, 2017 and April 13, 2017, respectively, for leases that were not conveyed to the Company at the time of the initial closing, for aggregate cash consideration of $170.3 million, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date.

The Sanchez Acquisition was accounted for as a business combination, therefore, the purchase price was allocated to the assets acquired and liabilities assumed based on their estimated acquisition date fair values based on then currently available information.

The results of operations for the Sanchez Acquisition have been included in the Company’s consolidated statements of operations since the December 14, 2016 closing date, including total revenues and net income attributable to common shareholders for the years ended December 31, 2018, 2017, and 2016 as shown in the table below:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
Total revenues		$57,780		$37,780		$1,459
Net Income Attributable to Common Shareholders		$38,551		$16,459		$966

The Company did not have any material divestitures for the year ended December 31,2016.

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Property And Equipment, Net

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property And Equipment, Net

4. Property and Equipment, Net

As of December 31, 2018 and 2017, total property and equipment, net consisted of the following:

	December 31,
	2018			2017
Oil and gas properties, full cost method	(In thousands)
Proved properties		$6,278,321			$5,615,153
Accumulated DD&A and impairments	(3,944,851		)	(3,649,806		)
Proved properties, net	2,333,470			1,965,347
Unproved properties, not being amortized
Unevaluated leasehold and seismic costs	608,830			612,589
Capitalized interest	65,003			47,698
Total unproved properties, not being amortized	673,833			660,287
Other property and equipment	29,191			25,625
Accumulated depreciation	(17,970		)	(15,449		)
Other property and equipment, net	11,221			10,176
Total property and equipment, net		$3,018,524			$2,635,810

The Company capitalized internal costs of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities totaling $17.0 million, $14.8 million and $10.5 million for the years ended December 31, 2018, 2017 and 2016, respectively.

The Company capitalized interest costs to unproved properties totaling $36.6 million, $28.3 million and $17.0 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Costs not subject to amortization totaling $673.8 million at December 31, 2018 were incurred in the following periods: $218.9 million in 2018, $397.7 million in 2017 and $57.2 million in 2016.

Impairments of Proved Oil and Gas Properties

The Company did not recognize impairments of proved oil and gas properties for the years ended December 31, 2018 and 2017. Primarily due to declines in the 12-Month Average Realized Price of crude oil, the Company recognized impairments of proved oil and gas properties of $576.5 million for the year ended December 31, 2016.

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Income Taxes

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

5. Income Taxes

The components of income tax expense were as follows:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Current income tax expense
U.S. Federal		$—			$—			$—
State	(792		)	(395		)	—
Total current income tax expense	(792		)	(395		)	—
Deferred income tax expense
U.S. Federal	—			—			—
State	(4,381		)	(3,635		)	—
Total deferred income tax expense	(4,381		)	(3,635		)	—
Income tax expense		($5,173	)		($4,030	)		$—

The Company’s income tax expense differs from the income tax expense computed by applying the U.S. federal statutory corporate income tax rate of 21% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016, to income (loss) before income taxes as follows:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Income (loss) before income taxes		$409,600			$91,140			($675,474	)
Income tax (expense) benefit at the U.S. federal statutory rate	(86,016		)	(31,899		)	236,416
State income tax (expense) benefit, net of U.S. federal income tax benefit	(5,173		)	(4,030		)	3,894
Tax deficiencies related to stock-based compensation	(2,572		)	(3,089		)	—
Provisional impact of Tax Cuts and Jobs Act	—			(211,724		)	—
Change in valuation allowance from provisional impact of Tax Cuts and Jobs Act	—			211,724			—
(Increase) decrease in valuation allowance due to current period activity	90,116			35,376			(240,864		)
Other	(1,528		)	(388		)	554
Income tax expense		($5,173	)		($4,030	)		$—

Significant changes in the Company’s operations impact the apportionment of taxable income to the states where the Company owns oil and gas properties. As discussed in “Note 3. Acquisitions and Divestitures of Oil and Gas Properties,” beginning in 2017 and continuing into 2018, the Company divested all of its assets in Marcellus, Utica, and Niobrara, and is currently operating solely in Texas. This operational shift has resulted in current and deferred tax liabilities in Texas that cannot be offset against the full valuation allowance that the Company has maintained.

Deferred Income Taxes

As of December 31, 2018 and 2017, the net deferred income tax liabilities are comprised of the following:

	December 31,
	2018			2017
	(In thousands)
Deferred income tax liabilities
Oil and gas properties		($16,610	)		($3,635	)
Derivative assets	(10,008		)	(2,140		)
Total deferred income tax liabilities	(26,618		)	(5,775		)
Deferred income tax assets
Net operating loss carryforward - U.S. federal and state	235,788			242,915
Oil and gas properties	—			50,177
Asset retirement obligations	3,927			4,996
Derivative liabilities	20,165			35,585
Other	1,634			1,496
Total deferred income tax assets	261,514			335,169
Deferred income tax asset valuation allowance	(242,913		)	(333,029		)
Net deferred income tax assets	18,601			2,140
Net deferred income tax liabilities		($8,017	)		($3,635	)

Tax Cuts and Jobs Act

On December 22, 2017, the U.S. Congress enacted the Tax Cuts and Jobs Act (the “Act”) which made significant changes to U.S. federal income tax law, including lowering the federal statutory corporate income tax rate to 21% from 35% beginning January 1, 2018. Due to the uncertainty regarding the application of ASC 740 in the period of enactment of the Act, the SEC issued Staff Accounting Bulletin 118 (“SAB 118”) which allowed the Company to provide a provisional estimate of the impacts of the Act in its earnings for the year ended December 31, 2017 and also provided a one-year measurement period in which the Company would record additional impacts from the enactment of the Act as they are identified. As a result, the Company remeasured its deferred tax balances by applying the reduced rate and recorded a provisional deferred tax expense of $211.7 million during the year ended December 31, 2017. This provisional deferred tax expense was fully offset by a $211.7 million deferred tax benefit as a result of the associated change in the valuation allowance against the net deferred tax assets. As reflected in the rate reconciliation above, the change in the deferred tax balances due to the rate reduction had no impact on the net deferred tax balances reported in the consolidated balance sheets as of December 31, 2017 and no impact in the consolidated statements of operations for the year ended December 31, 2017.

In August 2018, the Internal Revenue Service (“IRS”) issued Notice 2018-68, Guidance on the Application of Section 162(m) (“Notice 2018-68”), which provides initial guidance on the application of Section 162(m), as amended. Notice 2018-68 provided guidance regarding the group of covered employees subject to Section 162(m)’s deduction limit under the Act and the scope of transition relief available under the Act.

In November 2018, the IRS issued proposed regulations on business interest expense deduction limitations for tax years beginning after 2017, which included an expanded definition of what is considered interest expense as well as changes to the calculation of a taxpayer’s adjusted taxable income in computing the interest expense limitation. The Company has assessed these proposed regulations as they pertain to the provisional tax estimate for the year ended December 31, 2018, and has concluded it will have no interest expense deduction limitation to be carried forward to future years for the 2018 tax year.

As of December 31, 2018, the Company has completed its accounting for the tax effects of enactment of the Act, with immaterial changes made to the provisional estimate that was recorded in earnings for the year ended December 31, 2017.

Deferred Tax Asset Valuation Allowance

The deferred tax asset valuation allowance was $242.9 million, $333.0 million, and $564.4 million as of December 31, 2018, 2017, and 2016, respectively. Effective January 1, 2017, the Company adopted ASU 2016-09, and recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets, which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative-effect adjustment to retained earnings of zero and brought the valuation allowance to $580.1 million as of January 1, 2017. Decreases in the valuation allowance for the years ended December 31, 2018 and 2017 were based primarily on the pre-tax income recorded during those periods.

Throughout 2016, 2017, and 2018, the Company maintained a full valuation allowance against its deferred tax assets based on its conclusion, considering all available evidence (both positive and negative), that it was more likely than not the deferred taxes would not be realized. The Company intends to maintain a full valuation allowance against its deferred tax assets until there is sufficient evidence to support the reversal of such valuation allowance.

Net Operating Loss Carryforwards and Other

Net Operating Loss Carryforwards. As of December 31, 2018, the Company had U.S. federal net operating loss carryforwards of approximately $1,062.5 million that, if not utilized in earlier periods, will expire between 2026 and 2037.

The ability of the Company to utilize its U.S. loss carryforwards to reduce future taxable income is subject to various limitations under the Internal Revenue Code of 1986, as amended (the “Code”). The utilization of such carryforwards may be limited upon the occurrence of certain ownership changes, including the purchase or sale of stock by 5% shareholders and the offering of stock by the Company during any three-year period resulting in an aggregate change of more than 50% in the beneficial ownership of the Company. In the event of an ownership change, Section 382 of the Code imposes an annual limitation on the amount of the Company’s taxable income that can be offset by these carryforwards. The limitation is generally equal to the product of (i) the fair market value of the equity of the Company multiplied by (ii) a percentage approximately equivalent to the yield on long-term tax exempt bonds during the month in which an ownership change occurs. In addition, the limitation is increased if there are recognized built-in gains during any post-change year, but only to the extent of any net unrealized built-in gains inherent in the assets sold.

Due to the issuance of the Preferred Stock and the common stock offering associated with the ExL Acquisition, as well as the common stock offering in August 2018, the Company’s calculated ownership change percentage increased, however, as of December 31, 2018, the Company did not have a Section 382 limitation on the ability to utilize its U.S. net operating loss carryforwards. Future equity transactions involving the Company or 5% shareholders of the Company (including, potentially, relatively small transactions and transactions beyond the Company’s control) could cause further ownership changes and therefore a limitation on the annual utilization of the U. S. net operating loss carryforwards.

Other. The Company files income tax returns in the U.S. federal jurisdiction and various states, each with varying statutes of limitations. The 2006 through 2018 tax years generally remain subject to examination by federal and state tax authorities. As of December 31, 2018, 2017 and 2016, the Company had no uncertain tax positions.

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Debt

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Debt

6. Long-Term Debt

Long-term debt consisted of the following as of December 31, 2018 and 2017:

	December 31,
	2018			2017
	(In thousands)
Senior Secured Revolving Credit Facility due 2022		$744,431			$291,300
7.50% Senior Notes due 2020	—			450,000
Unamortized premium for 7.50% Senior Notes	—			579
Unamortized debt issuance costs for 7.50% Senior Notes	—			(4,492		)
6.25% Senior Notes due 2023	650,000			650,000
Unamortized debt issuance costs for 6.25% Senior Notes	(6,878		)	(8,208		)
8.25% Senior Notes due 2025	250,000			250,000
Unamortized debt issuance costs for 8.25% Senior Notes	(3,962		)	(4,395		)
Other long-term debt due 2028	—			4,425
Long-term debt		$1,633,591			$1,629,209

Senior Secured Revolving Credit Facility

The Company has a senior secured revolving credit facility with a syndicate of banks that, as of December 31, 2018, had a borrowing base of $1.3 billion, with an elected commitment amount of $1.1 billion, and borrowings outstanding of $744.4 million at a weighted average interest rate of 4.17%. The credit agreement governing the revolving credit facility provides for interest-only payments until May 4, 2022, when the credit agreement matures and any outstanding borrowings are due. The borrowing base under the credit agreement is subject to regular redeterminations in the spring and fall of each year, as well as special redeterminations described in the credit agreement, which in each case may reduce the amount of the borrowing base. The amount the Company is able to borrow with respect to the borrowing base is subject to compliance with the financial covenants and other provisions of the credit agreement. The capitalized terms which are not defined in this description of the revolving credit facility, shall have the meaning given to such terms in the credit agreement.

On January 31, 2018, as a result of the Eagle Ford divestiture, the Company’s borrowing base under the senior secured revolving credit facility was reduced from $900.0 million to $830.0 million, however, the elected commitment amount remained unchanged at $800.0 million. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for details of the Eagle Ford divestiture.

On May 4, 2018, the Company entered into the twelfth amendment to its credit agreement governing the revolving credit facility to, among other things, (i) establish the borrowing base at $1.0 billion, with an elected commitment amount of $900.0 million, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 2.00%-3.00% to 1.50%-2.50% and base rate loans from 1.00%-2.00% to 0.50%-1.50%, each depending on level of facility usage, (iii) amend the covenant limiting payment of dividends and distributions on equity to increase the Company’s ability to make dividends and distributions on its equity interests and (iv) amend certain other provisions, in each case as set forth therein.

On October 29, 2018, the Company entered into the thirteenth amendment to its credit agreement governing its revolving credit facility to, among other things, (i) establish the borrowing base at $1.3 billion, with an elected commitment amount of $1.1 billion, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 1.50%-2.50% to 1.25%-2.25% and base rate loans from 0.50%-1.50% to 0.25%-1.25%, each depending on the level of facility usage and each subject to an increase of 0.25% for any period during which the ratio of Total Debt to EBITDA exceeds 3.00 to 1.00, (iii) amend the definition of Capital Leases, and (iv) amend certain other definitions and provisions.

The obligations of the Company under the credit agreement are guaranteed by the Company’s material subsidiaries and are secured by liens on substantially all of the Company’s assets, including a mortgage lien on oil and gas properties having at least 90% of the total value of the oil and gas properties included in the Company’s reserve report used in its most recent redetermination.

Borrowings outstanding under the credit agreement bear interest at the Company’s option at either (i) a base rate for a base rate loan plus the margin set forth in the table below, where the base rate is defined as the greatest of the prime rate, the federal funds rate plus 0.50% and the adjusted LIBO rate plus 1.00%, or (ii) an adjusted LIBO rate for a Eurodollar loan plus the margin set forth in the table below. The Company also incurs commitment fees at rates as set forth in the table below on the unused portion of lender commitments, which are included in “Interest expense, net” in the consolidated statements of operations.

Ratio of Outstanding Borrowings to Lender Commitments	Applicable Margin for Base Rate Loans	Applicable Margin for Eurodollar Loans	Commitment Fee
Less than 25%	0.25%	1.25%	0.375%
Greater than or equal to 25% but less than 50%	0.50%	1.50%	0.375%
Greater than or equal to 50% but less than 75%	0.75%	1.75%	0.500%
Greater than or equal to 75% but less than 90%	1.00%	2.00%	0.500%
Greater than or equal to 90%	1.25%	2.25%	0.500%

The Company is subject to certain covenants under the terms of the credit agreement, which include the maintenance of the following financial covenants determined as of the last day of each quarter: (1) a ratio of Total Debt to EBITDA of not more than 4.00 to 1.00 and (2) a Current Ratio of not less than 1.00 to 1.00. As defined in the credit agreement, Total Debt excludes debt issuance costs and is net of cash and cash equivalents, EBITDA will be calculated based on the last four fiscal quarters after giving pro forma effect to EBITDA for material acquisitions and divestitures of oil and gas properties, and the Current Ratio includes an add back of the unused portion of lender commitments. As of December 31, 2018, the ratio of Total Debt to EBITDA was 2.41 to 1.00 and the Current Ratio was 1.51 to 1.00. Because the financial covenants are determined as of the last day of each quarter, the ratios can fluctuate significantly period to period as the level of borrowings outstanding under the credit agreement are impacted by the timing of cash flows from operations, capital expenditures, acquisitions and divestitures of oil and gas properties and securities offerings.

The credit agreement also places restrictions on the Company and certain of its subsidiaries with respect to additional indebtedness, liens, dividends and other payments to shareholders, repurchases or redemptions of the Company’s common stock, redemptions of senior notes, investments, acquisitions and divestitures of oil and gas properties, mergers, transactions with affiliates, hedging transactions and other matters.

The credit agreement is subject to customary events of default, including in connection with a change in control. If an event of default occurs and is continuing, the lenders may elect to accelerate amounts due under the credit agreement (except in the case of a bankruptcy event of default, in which case such amounts will automatically become due and payable).

Senior Notes

8.25% Senior Notes due 2025. On July 14, 2017, the Company closed a public offering of $250.0 million aggregate principal amount of 8.25% Senior Notes due 2025 (the “8.25% Senior Notes”), which mature on July 15, 2025 and have interest payable semi-annually each January 15 and July 15. Before July 15, 2020, the Company may, at its option, redeem all or a portion of the 8.25% Senior Notes at 100% of the principal amount plus accrued and unpaid interest and a make-whole premium. Thereafter, the Company may redeem all or a portion of the 8.25% Senior Notes at redemption prices decreasing annually from 106.188% to 100% of the principal amount redeemed plus accrued and unpaid interest. The Company used the net proceeds of $245.4 million, net of underwriting discounts and commissions and offering costs, to fund a portion of the purchase price for the ExL Acquisition that closed during the third quarter of 2017 and for general corporate purposes.

6.25% Senior Notes due 2023. Since April 15, 2018, the Company has had the right to redeem all or a portion of the 6.25% Senior Notes due 2023 (the “6.25% Senior Notes”) at redemption prices decreasing from 104.688% to 100% of the principal amount on April 15, 2021, plus accrued and unpaid interest.

If a Change of Control (as defined in the indentures governing the 8.25% Senior Notes and the 6.25% Senior Notes) occurs, the Company may be required by holders to repurchase the 8.25% Senior Notes and the 6.25% Senior Notes for cash at a price equal to 101% of the principal amount purchased, plus any accrued and unpaid interest.

The indentures governing the 8.25% Senior Notes and the 6.25% Senior Notes contain covenants that, among other things, limit the Company’s ability and the ability of its restricted subsidiaries to: pay distributions on, purchase or redeem the Company’s common stock or other capital stock or redeem the Company’s subordinated debt; make investments; incur or guarantee additional indebtedness or issue certain types of equity securities; create certain liens; sell assets; consolidate, merge or transfer all or substantially all of the Company’s assets; enter into agreements that restrict distributions or other payments from the Company’s restricted subsidiaries to the Company; engage in transactions with affiliates; and create unrestricted subsidiaries. Such indentures governing the Company’s senior notes are also subject to customary events of default, including those related to failure to comply with the terms of the notes and the indenture, certain failures to file reports with the SEC, certain cross defaults of other indebtedness and mortgages and certain failures to pay final judgments. At December 31, 2018, the 8.25% Senior Notes and the 6.25% Senior Notes are guaranteed by the same subsidiaries that also guarantee the revolving credit facility.

Redemptions of 7.50% Senior Notes

During the fourth quarter of 2017, the Company redeemed $150.0 million of the outstanding aggregate principal amount of its 7.50% Senior Notes at a price equal to 101.875% of par, plus accrued and unpaid interest. The Company paid $156.0 million upon the redemption, which included a redemption premium of $2.8 million and accrued and unpaid interest of $3.2 million. As a result of the redemption, the Company recorded a loss on extinguishment of debt of $4.2 million, which included the redemption premium of $2.8 million and the write-off of associated unamortized premiums and debt issuance costs of $1.4 million.

During the first and fourth quarters of 2018, the Company redeemed $320.0 million of the outstanding aggregate principal amount of its 7.50% Senior Notes at a price equal to 101.875% of par and the remaining $130.0 million outstanding aggregate principal amount at a redemption price of 100% of par, respectively, both plus accrued and unpaid interest. The Company paid a total of $468.6 million upon the redemptions, which included redemption premiums of $6.0 million and accrued and unpaid interest of $12.6 million. As a result of the redemptions, the Company recorded a loss on extinguishment of debt of $9.6 million, which included the redemption premiums of $6.0 million and the write-off of associated unamortized premiums and debt issuance costs of $3.6 million.

Redemption of Other Long-Term Debt

On May 3, 2018, the Company redeemed the remaining $4.4 million outstanding aggregate principal amount of its 4.375% Convertible Senior Notes due 2028 at a price equal to 100% of par. Upon the redemption, the Company paid $4.5 million, which included accrued and unpaid interest of $0.1 million.

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Asset Retirement Obligations

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

7. Asset Retirement Obligations

The following table sets forth a reconciliation of the Company’s asset retirement obligations for the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018			2017
	(In thousands)
Asset retirement obligations, beginning of period		$23,792			$21,240
Liabilities incurred	1,676			3,920
Increase due to acquisition of oil and gas properties	170			153
Liabilities settled	—			(343		)
Reduction due to divestitures of oil and gas properties	(8,547		)	(2,671		)
Accretion expense	1,366			1,799
Revisions to estimated cash flows	245			(306		)
Asset retirement obligations, end of period	18,702			23,792
Current asset retirement obligations (included in other current liabilities)	(342		)	(295		)
Non-current asset retirement obligations		$18,360			$23,497

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

8. Commitments and Contingencies

From time to time, the Company is party to certain legal actions and claims arising in the ordinary course of business. Pursuant to various purchase and sale agreements related to our divested assets in the Eagle Ford Shale, Marcellus Shale, Utica Shale, and Niobrara Formation, the Company has indemnified the respective purchasers against certain liabilities that they may incur with respect to the assets acquired from the Company. The Company believes such indemnities are customary in purchase and sale transactions in our industry.  Such indemnities may include, among others, breach of representations and warranties, tax liabilities, employee compensation, litigation, personal injury, transport or disposal of hazardous substances, calculation and payments of royalties, environmental matters and rights-of-way. 

While the outcome of these events cannot be predicted with certainty, as of December 31, 2018, management does not expect these indemnifications to have a materially adverse effect on the financial position or results of operations of the Company.

The financial position and results of operations of the Company continue to be affected from time to time in varying degrees by domestic and foreign political developments as well as legislation and regulations pertaining to restrictions on oil and gas production, imports and exports, tax changes, environmental regulations and cancellation of contract rights. Both the likelihood and overall effect of such occurrences on the Company vary greatly and are not predictable.

Rent expense included in general and administrative expense, net for the years ended December 31, 2018, 2017 and 2016 was $1.4 million, $1.7 million, and $2.0 million, respectively, and includes rent expense for the Company’s corporate and field offices. The table below presents total minimum commitments associated with long-term, non-cancelable leases, drilling rig contracts and gathering, processing and transportation service agreements, which require minimum volumes of natural gas or produced water to be delivered, as of December 31, 2018.

	2019		2020		2021		2022		2023		2024 and Thereafter		Total
	(In thousands)
Operating leases		$10,024		$9,154		$6,249		$3,639		$3,680		$20,978		$53,724
Drilling rig contracts (1)	37,077		16,867		813		—		—		—		54,757
Delivery commitments (2)	3,726		2,807		2,487		30		7		19		9,076
Produced water disposal commitments (3)	18,139		20,894		20,898		20,954		10,471		9,769		101,125
Other	1,800		1,050		—		—		—		—		2,850
Total		$70,766		$50,772		$30,447		$24,623		$14,158		$30,766		$221,532

(1) Drilling rig contracts represent gross contractual obligations and accordingly, other joint owners in the properties operated by us will generally be billed for their working interest share of such costs.

(2) Delivery commitments represent contractual obligations we have entered into for certain gathering, processing and transportation service agreements which require minimum volumes of natural gas to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any natural gas.

(3) Produced water disposal commitments represent contractual obligations we have entered into for certain service agreements which require minimum volumes of produced water to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any produced water.

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Preferred Stock

12 Months Ended

Dec. 31, 2018

Preferred Stock [Abstract]

Preferred Stock

9. Preferred Stock and Common Stock Warrants

On August 20, 2017, the Company closed on the issuance and sale in a private placement of (i) $250.0 million initial liquidation preference (250,000 shares) of 8.875% redeemable preferred stock, par value $0.01 per share (the “Preferred Stock”) and (ii) warrants for 2,750,000 shares of the Company’s common stock, with a term of ten years and an exercise price of $16.08 per share, exercisable only on a net share settlement basis (the “Warrants”), for a cash purchase price equal to $970.00 per share of Preferred Stock to certain funds managed or sub-advised by GSO Capital Partners LP and its affiliates (the “GSO Funds”). The closing occurred contemporaneously with the closing of the ExL Acquisition. The Company used the proceeds of approximately $236.4 million, net of issuance costs to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes.

Net proceeds were allocated between the Preferred Stock and the Warrants based on their relative fair values at the issuance date, with $213.4 million allocated to the Preferred Stock and $23.0 million allocated to the Warrants. The fair value of the Preferred Stock was calculated by a third-party valuation specialist using a discounted cash flow model. Significant inputs into the calculation included the per share cash purchase price, redemption premiums, and liquidation preference, all as discussed further below, as well as redemption assumptions provided by the Company. The fair value of the Warrants was calculated using a Black-Scholes-Merton option pricing model, incorporating the following assumptions at the issuance date:

	Issuance Date Fair Value Assumptions
Exercise price	$16.08
Expected term (in years)	10.0
Expected volatility	62.9	%
Risk-free interest rate	2.2	%
Dividend yield	—	%

See “Note 13. Fair Value Measurements” for further discussion of the significant inputs used in the Preferred Stock fair value calculation.

The Preferred Stock is presented as temporary equity in the consolidated balance sheets with the issuance date fair value accreted to the initial liquidation preference using the effective interest method. The Warrants are presented in “Additional paid-in capital” in the consolidated balance sheets at their issuance date fair value.

The following table sets forth a reconciliation of changes in the carrying amount of Preferred Stock for the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018			2017
	(In thousands)
Preferred Stock, beginning of period		$214,262			$—
Relative fair value at issuance	—			213,400
Redemption of Preferred Stock	(42,897		)	—
Accretion on Preferred Stock	3,057			862
Preferred Stock, end of period		$174,422			$214,262

The Preferred Stock has a liquidation preference of $1,000.00 per share and bears an annual cumulative dividend rate of 8.875%, payable on March 15, June 15, September 15 and December 15 of any given year. The Company may elect to pay all or a portion of the Preferred Stock dividends in shares of its common stock in decreasing percentages as follows with respect to any preferred stock dividend declared by the Company’s Board of Directors and paid in respect of a quarter ending:

Period	Percentage
On or after December 15, 2018 and on or prior to September 15, 2019	75	%
On or after December 15, 2019 and on or prior to September 15, 2020	50	%

If the Company fails to satisfy the Preferred Stock dividend on the applicable dividend payment date, then the unpaid dividend will be added to the liquidation preference until paid.

The Preferred Stock outstanding is not mandatorily redeemable, but can be redeemed at the Company’s option and, in certain circumstances, at the option of the holders of the Preferred Stock. On or prior to August 10, 2018, the Company had the right to redeem up to 50,000 shares of Preferred Stock, in cash, at $1,000.00 per share, plus accrued and unpaid dividends in an amount not to exceed the sum of the cash proceeds of divestitures of oil and gas properties and related assets, the sale or issuance of the Company’s common stock and the sale of any of the Company’s wholly owned subsidiaries.

In addition, at any time on or prior to August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at a redemption premium of 104.4375%, plus accrued and unpaid dividends and the present value on the redemption date of all quarterly dividends that would be payable from the redemption date through August 10, 2020. After August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at redemption premiums, as presented in the table below, plus accrued but unpaid dividends.

Period	Percentage
After August 10, 2020 but on or prior to August 10, 2021	104.4375	%
After August 10, 2021 but on or prior to August 10, 2022	102.21875	%
After August 10, 2022	100	%

The holders of the Preferred Stock have the option to cause the Company to redeem the Preferred Stock under the following conditions:

• Upon the Company’s failure to pay a quarterly dividend within three months of the applicable payment date;

• On or after August 10, 2024, if the Preferred Shares remain outstanding; or

• Upon the occurrence of certain changes of control.

For the first two conditions described above, the Company has the option to settle any such redemption in cash or shares of its common stock and the holders of the Preferred Stock may elect to revoke or reduce the redemption if the Company elects to settle in shares of common stock.

The Preferred Stock are non-voting shares except as required by the Company’s articles of incorporation or bylaws. However, so long as the GSO Funds beneficially own more than 50% of the Preferred Stock, the consent of the holders of the Preferred Stock will be required prior to issuing stock senior to or on parity with the Preferred Stock, incurring indebtedness subject to a leverage ratio, agreeing to certain restrictions on dividends on, or redemption of, the Preferred Stock and declaring or paying dividends on the Company’s common stock in excess of $15.0 million per year subject to a leverage ratio. Additionally, if the Company does not redeem the Preferred Stock before August 10, 2024, in connection with a change of control or failure to pay a quarterly dividend within three months of the applicable payment date, the holders of the Preferred Stock are entitled to additional rights including:

• Increasing the dividend rate to 12.0% per annum until August 10, 2024 and thereafter to the greater of 12.0% per annum and the one-month LIBOR plus 10.0%;

• Electing up to two directors to the Company’s Board of Directors; and

• Requiring approval by the holders of the Preferred Stock to incur indebtedness subject to a leverage ratio, declaring or paying dividends on the Company’s common stock in excess of $15.0 million per year or issuing equity of the Company’s subsidiaries to third parties.

Loss on Redemption of Preferred Stock

During the first quarter of 2018, the Company redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and accrued and unpaid dividends of $0.5 million. The Company recognized a $7.1 million loss on the redemption due to the excess of the $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock.

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Shareholder's Equity

12 Months Ended

Dec. 31, 2018

Shareholder's Equity [Abstract]

Stockholders' Equity Note Disclosure

10. Shareholders’ Equity

Increase in Authorized Common Shares

At the Company’s annual meeting of shareholders on May 16, 2017, shareholders approved an amendment to the Company’s Amended and Restated Articles of Incorporation to increase the number of authorized shares of common stock from 90,000,000 to 180,000,000.

Sales of Common Stock

On August 17, 2018, the Company completed a public offering of 9.5 million shares of its common stock at a price per share of $22.55. The Company used the proceeds of $213.7 million, net of offering costs, to fund the Devon Acquisition and for general corporate purposes. Pending the closing of the Devon Acquisition, the Company used the net proceeds to temporarily repay a portion of the borrowings outstanding under the revolving credit facility.

On July 3, 2017, the Company completed a public offering of 15.6 million shares of its common stock at a price per share of $14.28. The Company used the proceeds of $222.4 million, net of offering costs, to fund a portion of the ExL Acquisition and for general corporate purposes.

On October 28, 2016, the Company completed a public offering of 6.0 million shares of its common stock at a price per share of $37.32. The Company used the proceeds of $223.7 million, net of offering costs, to fund the Sanchez Acquisition and repay borrowings under the revolving credit facility. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition.

See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the acquisitions discussed above.

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Stock-Based Compensation

12 Months Ended

Dec. 31, 2018

Shareholders' Equity And Stock Incentive Plan [Abstract]

Shareholders' Equity And Stock Incentive Plan

11. Stock-Based Compensation

Equity-based incentive awards are granted under the 2017 Incentive Plan of Carrizo Oil & Gas, Inc. (the “2017 Incentive Plan”) and the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (“Cash SAR Plan”). The 2017 Incentive Plan replaced the Incentive Plan of Carrizo Oil & Gas, Inc., as amended and restated effective May 15, 2014 (the “Prior Incentive Plan”) and, from the effective date of the 2017 Incentive Plan, no further awards may be granted under the Prior Incentive Plan. However, awards previously granted under the Prior Incentive Plan will remain outstanding in accordance with their terms. Under the 2017 Incentive Plan, the Compensation Committee of the Board of Directors (the “Committee”) may grant restricted stock awards and units, stock appreciation rights that can be settled in cash or shares of common stock, performance shares, and stock options to employees, independent contractors, and non-employee directors. Under the Cash SAR Plan, the Committee may grant stock appreciation rights that may only be settled in cash to employees and independent contractors.

The 2017 Incentive Plan provides that up to 2,675,000 shares of the Company’s common stock, plus the shares remaining available for awards under the Prior Incentive Plan at the effective date of the 2017 Incentive Plan, may be granted (the “Maximum Share Limit”). Each restricted stock award and unit and performance share granted under the 2017 Incentive Plan counts as 1.35 shares against the Maximum Share Limit. Each stock option and stock appreciation right to be settled in shares of common stock granted under the 2017 Incentive Plan counts as 1.00 share against the Maximum Share Limit. Cash SARs granted under the 2017 Incentive Plan and the Cash SAR Plan do not count against the Maximum Share Limit. There have been no grants of stock appreciation rights to be settled in shares of common stock and there are no outstanding stock options. As of December 31, 2018, there were 258,785 shares of common stock available for grant under the 2017 Incentive Plan.

Restricted Stock Awards and Units

The table below summarizes restricted stock award and unit activity for the years ended December 31, 2018, 2017 and 2016:

	Restricted Stock Awards and Units		Weighted Average Grant Date Fair Value
For the Year Ended December 31, 2016
Unvested restricted stock awards and units, beginning of period	1,041,997			$44.22
Granted	887,254			$27.80
Vested	(811,136	)		$36.32
Forfeited	(6,405	)		$34.46
Unvested restricted stock awards and units, end of period	1,111,710			$36.93
For the Year Ended December 31, 2017
Unvested restricted stock awards and units, beginning of period	1,111,710			$36.93
Granted	1,020,465			$25.63
Vested	(635,965	)		$39.62
Forfeited	(13,555	)		$29.11
Unvested restricted stock awards and units, end of period	1,482,655			$28.07
For the Year Ended December 31, 2018
Unvested restricted stock awards and units, beginning of period	1,482,655			$28.07
Granted	1,458,421			$15.49
Vested	(621,399	)		$31.48
Forfeited	(53,010	)		$17.72
Unvested restricted stock awards and units, end of period	2,266,667			$19.28

Grant activity primarily consisted of restricted stock units to employees and independent contractors as part of the annual grant of long-term equity incentive awards that occurred in the first quarter of each of the years presented in the table above and vest ratably over an approximate three-year period. As of December 31, 2018, unrecognized compensation costs related to unvested restricted stock awards and units was $23.2 million and will be recognized over a weighted average period of 1.9 years. The aggregate fair value of restricted stock awards and units that vested during the years ended December 31, 2018, 2017 and 2016 was $10.2 million, $20.3 million and $26.3 million, respectively.

Cash SARs

The table below summarizes the Cash SAR activity for the years ended December 31, 2018, 2017 and 2016:

	Stock Appreciation Rights		Weighted Average Exercise Prices		Weighted Average Remaining Life (In years)	Aggregate Intrinsic Value (In millions)		Aggregate Intrinsic Value of Exercises (In millions)
For the Year Ended December 31, 2016
Outstanding, beginning of period	700,453			$21.86
Granted	376,260			$27.30
Exercised	(354,075	)		$23.89					$5.2
Forfeited	—		—
Expired	—		—
Outstanding, end of period	722,638			$23.69
Vested, end of period	350,840			$19.87
Vested and exercisable, end of period	350,840			$19.87
For the Year Ended December 31, 2017
Outstanding, beginning of period	722,638			$23.69
Granted	342,440			$26.94
Exercised	(219,279	)		$17.28					$2.1
Forfeited	—		—
Expired	(131,561	)		$24.19
Outstanding, end of period	714,238			$27.12
Vested, end of period	185,899			$27.30
Vested and exercisable, end of period	—			$27.30
For the Year Ended December 31, 2018
Outstanding, beginning of period	714,238			$27.12
Granted	616,686			$14.67
Exercised	—		—						$—
Forfeited	—		—
Expired	—		—
Outstanding, end of period	1,330,924			$21.35	4.3		$—
Vested, end of period	543,018			$27.18
Vested and exercisable, end of period	—			$27.18	2.5		$—

Grant activity primarily consisted of Cash SARs to certain employees and independent contractors as part of the annual grant of long-term equity incentive awards that occurred in the first quarter of each of the years presented in the table above. The Cash SARs granted during the year ended December 31, 2018 vest ratably over an approximate three year period and expire approximately seven years from the grant date. The Cash SARs granted during the years ended December 31, 2017 and 2016 vest ratably over an approximate two year period and expire approximately five years from the grant date.

The grant date fair value of the Cash SARs, calculated using the Black-Scholes-Merton option pricing model, was $4.9 million, $4.1 million, and $3.7 million for the years ended December 31, 2018, 2017, and 2016, respectively. The following table summarizes the assumptions used and the resulting grant date fair value per Cash SAR granted during the years ended December 31, 2018, 2017, and 2016:

	Years Ended December 31,
	2018		2017		2016
Expected term (in years)	6.0		4.2		3.9
Expected volatility	54.3	%	54.3	%	45.1	%
Risk-free interest rate	2.8	%	1.8	%	1.3	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per Cash SAR	$7.89		$12.00		$9.88

The liability for Cash SARs as of December 31, 2018 and 2017 was $1.8 million and $4.4 million, respectively, all of which was classified as “Other current liabilities” in the consolidated balance sheets in the respective period. Unrecognized compensation costs related to unvested Cash SARs were $2.4 million as of December 31, 2018, and will be recognized over a weighted average period of 2.2 years.

Performance Shares

The table below summarizes performance share activity for the years ended December 31, 2018, 2017 and 2016:

	Target Performance Shares (1)		Weighted Average Grant Date Fair Value
For the Year Ended December 31, 2016
Unvested performance shares, beginning of period	112,859			$66.83
Granted	41,651			$35.71
Vested at end of performance period	—		—
Forfeited	—		—
Unvested performance shares, end of period	154,510			$58.44
For the Year Ended December 31, 2017
Unvested performance shares, beginning of period	154,510			$58.44
Granted	46,787			$35.14
Vested at end of performance period	(56,342	)		$68.15
Forfeited	—		—
Unvested performance shares, end of period	144,955			$47.14
For the Year Ended December 31, 2018
Unvested performance shares, beginning of period	144,955			$47.14
Granted	93,771			$19.09
Vested at end of performance period	(49,458	)		$65.51
Did not vest at end of performance period	(7,059	)		$65.51
Forfeited	—		—
Unvested performance shares, end of period	182,209			$27.01

(1) The number of performance shares that vest may vary from the number of target performance shares granted depending on the Company’s final TSR ranking for the approximate three-year performance period.

Grant activity primarily consisted of performance shares to certain employees and independent contractors as part of the annual grant of long-term equity incentive awards that occurred in the first quarter of each of the years presented in the table above.

For the year ended December 31, 2018, as a result of the Company’s final TSR ranking during the performance period, a multiplier of 88% was applied to the 56,517 target performance shares that were granted in 2015, resulting in the vesting of 49,458 shares and 7,059 shares that did not vest. For the year ended December 31, 2017, as a result of the Company’s final TSR ranking during the performance period, a multiplier of 164% was applied to the 56,342 target performance shares that were granted in 2014, resulting in the vesting of 92,200 shares. The Company did not have any performance shares that vested during the year ended December 31, 2016. The aggregate fair value of performance shares that vested during the years ended December 31, 2018 and 2017 was $0.8 million and $2.6 million, respectively.

For the years ended December 31, 2018, 2017 and 2016, the grant date fair value of the performance shares, calculated using a Monte Carlo simulation, was $1.8 million, $1.6 million, and $1.5 million, respectively. The following table summarizes the assumptions used and the resulting grant date fair value per performance share granted during the years ended December 31, 2018, 2017 and 2016:

	Years Ended December 31,
	2018		2017		2016
Number of simulations	500,000		500,000		500,000
Expected term (in years)	3.0		3.0		3.0
Expected volatility	61.5	%	59.2	%	55.3	%
Risk-free interest rate	2.4	%	1.5	%	1.2	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per performance share	$19.09		$35.14		$35.71

As of December 31, 2018, unrecognized compensation costs related to unvested performance shares were $2.1 million and will be recognized over a weighted average period of 1.8 years.

Stock-Based Compensation Expense, Net

The following table sets forth the components of stock-based compensation expense, net:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Restricted stock awards and units		$18,434			$21,372			$28,196
Cash SARs	(2,571		)	(5,023		)	9,675
Performance shares	1,785			2,442			2,806
	17,648			18,791			40,677
Less: amounts capitalized to oil and gas properties	(4,124		)	(4,482		)	(4,591		)
Total stock-based compensation expense, net		$13,524			$14,309			$36,086

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Derivative Instruments

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

12. Derivative Instruments

Commodity Derivative Instruments

The Company uses commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of its forecasted sales of production and achieve a more predictable level of cash flow. Since the Company derives a significant portion of its revenues from sales of crude oil, crude oil price volatility represents the Company’s most significant commodity price risk. While the use of commodity derivative instruments limits or partially reduces the downside risk of adverse commodity price movements, such use also limits the upside from favorable commodity price movements. The Company does not enter into commodity derivative instruments for speculative purposes.

The Company’s commodity derivative instruments, which settle on a monthly basis over the term of the contract for contracted volumes, consist of over-the-counter price swaps, three-way collars, sold call options and basis swaps, each of which is described below.

Price swaps are settled based on differences between a fixed price and the settlement price of a referenced index. If the settlement price of the referenced index is below the fixed price, the Company receives the difference from the counterparty. If the referenced settlement price is above the fixed price, the Company pays the difference to the counterparty.

Three-way collars consist of a purchased put option (floor price), a sold call option (ceiling price) and a sold put option (sub-floor price) and are settled based on differences between the floor or ceiling prices and the settlement price of a referenced index or the difference between the floor price and sub-floor price. If the settlement price of the referenced index is below the sub-floor price, the Company receives the difference between the floor price and sub-floor price from the counterparty. If the settlement price of the referenced index is between the floor price and sub-floor price, the Company receives the difference between the floor price and the settlement price of the referenced index from the counterparty. If the settlement price of the referenced index is between the floor price and ceiling price, no payments are due to or from either party. If the settlement price of the referenced index is above the ceiling price, the Company pays the difference to the counterparty.

Sold call options are settled based on differences between the ceiling price and the settlement price of a referenced index. If the settlement price of the referenced index is above the ceiling price, the Company pays the difference to the counterparty. If the settlement price of the referenced index is below the ceiling price, no payments are due to or from either party. Premiums from the sale of call options have been used to enhance the fixed price of certain contemporaneously executed price swaps. Purchased call options executed contemporaneously with sold call options in order to increase the ceiling price of existing sold call options have been presented on a net basis in the table below.

Basis swaps are settled based on differences between a fixed price differential and the differential between the settlement prices of two referenced indexes. If the differential between the settlement prices of the two referenced indexes is greater than the fixed price differential, the Company receives the difference from the counterparty. If the differential between the settlement prices of the two referenced indexes is less than the fixed price differential, the Company pays the difference to the counterparty.

The referenced index of the Company’s price swaps, three-way collars and sold call options is U.S. New York Mercantile Exchange (“NYMEX”) West Texas Intermediate (“WTI”) for crude oil and NYMEX Henry Hub for natural gas, as applicable. The prices received by the Company for the sale of its production generally vary from these referenced index prices due to adjustments for delivery location (basis) and other factors. The referenced indexes of the Company’s basis swaps, which are used to mitigate location price risk for a portion of its production, are Argus WTI Cushing (“WTI Cushing”) and the applicable index price of the Company’s crude oil sales contracts is Argus WTI Midland (“WTI Midland”) for its Delaware Basin crude oil production and Argus Light Louisiana Sweet (“LLS”) for its Eagle Ford crude oil production.

The Company has incurred premiums on certain of its commodity derivative instruments in order to obtain a higher floor price and/or higher ceiling price. Payment of these premiums are deferred until the applicable contracts settle on a monthly basis over the term of the contract or, in some cases, during the final 12 months of the contract and are referred to as deferred premium obligations.

As of December 31, 2018, the Company had the following outstanding commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)		Fixed Price Differential ($ per Bbl)
Crude oil	1Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	1Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	1Q19	Basis Swaps	WTI Midland-WTI Cushing	5,500	—		—		—			($5.24	)
Crude oil	1Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	2Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	2Q19	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			($5.38	)
Crude oil	2Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	3Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	3Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	3Q19	Basis Swaps	WTI Midland-WTI Cushing	7,000	—		—		—			($5.56	)
Crude oil	3Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	4Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	4Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	4Q19	Basis Swaps	WTI Midland-WTI Cushing	11,000	—		—		—			($3.84	)
Crude oil	4Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2020	Basis Swaps	WTI Midland-WTI Cushing	13,000	—		—		—			($1.27	)
Crude oil	2020	Sold Call Options	NYMEX WTI	4,575	—		—			$75.98	—
Crude oil	2021	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			$0.03

Commodity	Period	Type of Contract	Index	Volumes (MMBtu per day)	Sub-Floor Price ($ per MMBtu)	Floor Price ($ per MMBtu)	Ceiling Price ($ per MMBtu)		Fixed Price  Differential ($ per MMBtu)
Natural gas	1Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	2Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	3Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	4Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	2020	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.50	—

The Company typically has numerous commodity derivative instruments outstanding with a counterparty that were executed at various dates, for various contract types, commodities and time periods often resulting in both commodity derivative asset and liability positions with that counterparty. The Company nets its commodity derivative instrument fair values executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to ISDAs, which provide for net settlement over the term of the contract and in the event of default or termination of the contract.

Counterparties to the Company’s commodity derivative instruments who are a Lender Counterparty allow the Company to satisfy any need for margin obligations associated with commodity derivative instruments where the Company is in a net liability position with the Lender Counterparty with the collateral securing the credit agreement, thus eliminating the need for independent collateral posting. Counterparties to the Company’s commodity derivative instruments who are a Non-Lender Counterparty can require commodity derivative instruments to be novated to a Lender Counterparty if the Company’s net liability position exceeds the Company’s unsecured credit limit with the Non-Lender Counterparty and therefore do not require the posting of cash collateral.

Because each Lender Counterparty has an investment grade credit rating and the Company has obtained a guaranty from each Non-Lender Counterparty’s parent company which has an investment grade credit rating, the Company believes it does not have significant credit risk and accordingly does not currently require its counterparties to post collateral to support the net asset positions of its commodity derivative instruments. Although the Company does not currently anticipate nonperformance from its counterparties, it continually monitors the credit ratings of each Lender Counterparty and each Non-Lender Counterparty’s parent company. The Company executes its derivative instruments with seventeen counterparties to minimize its credit exposure to any individual counterparty.

Contingent Consideration Arrangements

The purchase and sale agreements of the ExL Acquisition and divestitures of the Company’s assets in the Niobrara, Marcellus and Utica, included contingent consideration arrangements that require the Company to pay or entitle the Company to receive specified amounts if commodity prices exceed specified thresholds, which are summarized in the table below. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further discussion.

Contingent Consideration Arrangements	Years	Threshold (1)		Contingent Receipt (Payment) - Annual			Contingent Receipt (Payment) - Aggregate Limit
				(In thousands)
Contingent ExL Consideration	2018		$50.00		($50,000	)
	2019	50.00		(50,000		)
	2020	50.00		(50,000		)
	2021	50.00		(50,000		)		($125,000	)
Contingent Niobrara Consideration	2018		$55.00		$5,000
	2019	55.00		5,000
	2020	60.00		5,000			—
Contingent Marcellus Consideration	2018		$3.13		$3,000
	2019	3.18		3,000
	2020	3.30		3,000				$7,500
Contingent Utica Consideration	2018		$50.00		$5,000
	2019	53.00		5,000
	2020	56.00		5,000			—

(1) The price used to determine whether the specified threshold for each year has been met for the Contingent ExL Consideration, Contingent Niobrara Consideration and Contingent Utica Consideration is the average daily closing spot price per barrel of WTI crude oil as measured by the U.S. Energy Information Administration. The price used to determine whether the specified threshold for each year has been met for the Contingent Marcellus Consideration is the average monthly settlement price per MMBtu of Henry Hub natural gas for the next calendar month, as determined on the last business day preceding each calendar month as measured by the CME Group Inc.

Derivative Assets and Liabilities

The derivative instrument asset and liability fair values recorded in the consolidated balance sheets as of December 31, 2018 and December 31, 2017 are summarized below:

	December 31, 2018
	Gross Amounts Recognized			Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts Presented in the Consolidated Balance Sheets
	(In thousands)
Commodity derivative instruments		$50,406			($20,502	)		$29,904
Contingent Niobrara Consideration	5,000			—			5,000
Contingent Utica Consideration	5,000			—			5,000
Derivative assets		$60,406			($20,502	)		$39,904
Commodity derivative instruments	6,083			(4,236		)	1,847
Contingent Niobrara Consideration	2,035			—			2,035
Contingent Marcellus Consideration	1,369			—			1,369
Contingent Utica Consideration	2,501			—			2,501
Other long-term assets		$11,988			($4,236	)		$7,752
Commodity derivative instruments		($15,345	)		$10,140			($5,205	)
Deferred premium obligations	(10,362		)	10,362			—
Contingent ExL Consideration	(50,000		)	—			(50,000		)
Derivative liabilities-current		($75,707	)		$20,502			($55,205	)
Commodity derivative instruments	(10,751		)	518			(10,233		)
Deferred premium obligations	(3,718		)	3,718			—
Contingent ExL Consideration	(30,584		)	—			(30,584		)
Derivative liabilities-non current		($45,053	)		$4,236			($40,817	)

	December 31, 2017
	Gross Amounts Recognized			Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts Presented in the Consolidated Balance Sheets
	(In thousands)
Commodity derivative instruments		$4,869			($4,869	)		$—
Derivative assets		$4,869			($4,869	)		$—
Commodity derivative instruments	9,505			(9,505		)	—
Contingent Marcellus Consideration	2,205			—			2,205
Contingent Utica Consideration	7,985			—			7,985
Other long-term assets		$19,695			($9,505	)		$10,190
Commodity derivative instruments		($52,671	)		($4,450	)		($57,121	)
Deferred premium obligations	(9,319		)	9,319			—
Derivative liabilities-current		($61,990	)		$4,869			($57,121	)
Commodity derivative instruments	(24,609		)	(2,098		)	(26,707		)
Deferred premium obligations	(11,603		)	11,603			—
Contingent ExL Consideration	(85,625		)	—			(85,625		)
Derivative liabilities-non current		($121,837	)		$9,505			($112,332	)

See “Note 13. Fair Value Measurements” for additional information regarding the fair value of the Company’s derivative instruments.

(Gain) Loss on Derivatives, Net

The components of “(Gain) loss on derivatives, net” in the consolidated statements of operations for the years ended December 31, 2018, 2017, and 2016 are summarized below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
(Gain) Loss on Derivatives, Net
Crude oil		($9,726	)		$22,839			$23,609
NGL	4,439			1,322			—
Natural gas	(421		)	(15,399		)	19,584
Deferred premium obligations	1,875			18,401			5,880
Contingent ExL Consideration	(5,041		)	33,325			—
Contingent Niobrara Consideration	845			—			—
Contingent Marcellus Consideration	836			455			—
Contingent Utica Consideration	484			(1,840		)	—
(Gain) Loss on Derivatives, Net		($6,709	)		$59,103			$49,073

Cash Received (Paid) for Derivative Settlements, Net

For the years ended December 31, 2018, 2017, and 2016, there were no settlements of contingent consideration arrangements, however, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration were exceeded for the year ended December 31, 2018. See “Note 16. Subsequent Events” for further discussion.

The components of “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows for the years ended December 31, 2018, 2017, and 2016 are summarized below:

	Years Ended December 31,
	2018			2017			2016
Cash Flows from Operating Activities	(In thousands)
Cash Received (Paid) for Derivative Settlements, Net
Crude oil		($78,570	)		$9,883			$125,098
NGL	(6,378		)	—			—
Natural gas	(1,710		)	(54		)	—
Deferred premium obligations	(9,649		)	(2,056		)	(5,729		)
Cash Received (Paid) for Derivative Settlements, Net		($96,307	)		$7,773			$119,369

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Fair Value Measurements

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

13. Fair Value Measurements

Accounting guidelines for measuring fair value establish a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy categorizes assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. The three levels are defined as follows:

Level 1 – Observable inputs such as quoted prices in active markets at the measurement date for identical, unrestricted assets or liabilities.

Level 2 – Other inputs that are observable directly or indirectly such as quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability.

Level 3 – Unobservable inputs for which there is little or no market data and which the Company makes its own assumptions about how market participants would price the assets and liabilities.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables summarize the Company’s derivative instrument assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017:

	December 31, 2018
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$31,751			$—
Contingent Niobrara Consideration	—		7,035			—
Contingent Marcellus Consideration	—		1,369			—
Contingent Utica Consideration	—		7,501			—
Liabilities
Commodity derivative instruments		$—		($15,438	)		$—
Contingent ExL Consideration	—		(80,584		)	—

	December 31, 2017
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$—			$—
Contingent Niobrara Consideration	—		—			—
Contingent Marcellus Consideration	—		—			2,205
Contingent Utica Consideration	—		—			7,985
Liabilities
Commodity derivative instruments		$—		($83,828	)		$—
Contingent ExL Consideration	—		—			(85,625		)

The asset and liability fair values reported in the consolidated balance sheets are as of the balance sheet date and subsequently change as a result of changes in commodity prices, market conditions and other factors.

Commodity derivative instruments. The fair value of the Company’s commodity derivative instruments is based on a third-party industry-standard pricing model which uses contract terms and prices and assumptions and inputs that are substantially observable in active markets throughout the full term of the instruments including forward oil and gas price curves, discount rates and volatility factors, and are therefore designated as Level 2 within the valuation hierarchy. The fair values are also compared to the values provided by the counterparties for reasonableness and are adjusted for the counterparties’ credit quality for commodity derivative assets and the Company’s credit quality for commodity derivative liabilities.

Contingent consideration arrangements. The fair values of the contingent consideration arrangements were determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as forward oil and gas price curves, volatility factors, and risk adjusted discount rates, which include adjustments for the counterparties’ credit quality for contingent consideration assets and the Company’s credit quality for the contingent consideration liabilities. These inputs are substantially observable in active markets throughout the full term of the contingent consideration arrangements or can be derived from observable data and are therefore designated as Level 2 within the valuation hierarchy. The Company reviewed the valuations, including the related inputs, and analyzed changes in fair value measurements between periods.

The following tables present the reconciliation of changes in the fair values of the contingent consideration arrangements, which were designated within the valuation hierarchy as Level 2 for the year ended December 31, 2018 and Level 3 for the year ended December 31, 2017:

	Contingent Consideration Arrangements
	Assets			Liability
	(In thousands)
Balance as of January 1, 2017		$—			$—
Recognition of (acquisition) divestiture date fair value	8,805			(52,300		)
Gain (loss) on change in fair value, net(1)	1,385			(33,325		)
Transfers into (out of) Level 3	—			—
Balance as of December 31, 2017		$10,190			($85,625	)
Recognition of divestiture date fair value	7,880			—
Gain (loss) on changes in fair value, net(1)	(2,165		)	5,041
Transfers out of Level 3	(15,905		)	80,584
Balance as of December 31, 2018		$—			$—

(1) Recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations.

During 2018, the Company determined that the contingent consideration arrangements met the requirements to be designated as Level 2 in the valuation hierarchy due to the increased observability of the forward oil and gas price curves used in determining the fair value throughout the full term of the contingent consideration arrangements resulting in the transfer out of Level 3.

See “Note 12. Derivative Instruments” for additional information regarding the contingent consideration arrangements.

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The fair value measurements of assets acquired and liabilities assumed, other than contingent consideration which is discussed above, are measured as of the acquisition date by a third-party valuation specialist using a discounted cash flow model based on inputs that are not observable in the market and are therefore designated as Level 3 inputs. Significant inputs to the valuation of acquired oil and gas properties include forward oil and gas price curves, estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs, and a risk adjusted discount rate. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for additional discussion.

The fair value measurements of asset retirement obligations are measured as of the date a well is drilled or when production equipment and facilities are installed using a discounted cash flow model based on inputs that are not observable in the market and therefore are designated as Level 3 within the valuation hierarchy. Significant inputs to the fair value measurement of asset retirement obligations include estimates of the costs of plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land as well as estimates of the economic lives of the oil and gas wells and future inflation rates. See “Note 7. Asset Retirement Obligations” for additional discussion.

The fair value measurements of the Preferred Stock are measured as of the issuance date by a third-party valuation specialist using a discounted cash flow model based on inputs that are not observable in the market and therefore are designated as Level 3 inputs. Significant inputs to the valuation of the Preferred Stock include the per share cash purchase price, redemption premiums, liquidation preference, and redemption assumptions provided by the Company. See “Note 9. Preferred Stock and Common Stock Warrants” for details regarding the allocation of the net proceeds based on the relative fair values of the Preferred Stock and Warrants.

Fair Value of Other Financial Instruments

The Company’s other financial instruments consist of cash and cash equivalents, receivables, payables, and long-term debt. The carrying amounts of cash and cash equivalents, receivables, and payables approximate fair value due to the highly liquid or short-term nature of these instruments. The carrying amount of long-term debt associated with borrowings outstanding under the Company’s revolving credit facility approximates fair value as borrowings bear interest at variable rates. The following table presents the principal amounts of the Company’s senior notes and other long-term debt with the fair values measured using quoted secondary market trading prices which are designated as Level 1 within the valuation hierarchy. See “Note 6. Long-Term Debt” for additional discussion.

	December 31, 2018				December 31, 2017
	Principal Amount		Fair Value		Principal Amount		Fair Value
	(In thousands)
7.50% Senior Notes due 2020		$—		$—		$450,000		$459,518
6.25% Senior Notes due 2023	650,000		599,625		650,000		674,375
8.25% Senior Notes due 2025	250,000		244,375		250,000		274,375
Other long-term debt due 2028	—		—		4,425		4,445

XML

Condensed Consolidating Financial Information

12 Months Ended

Dec. 31, 2018

Condensed Consolidating Financial Information [Abstract]

Condensed Consolidating Financial Information

14. Condensed Consolidating Financial Information

The rules of the SEC require that condensed consolidating financial information be provided for a subsidiary that has guaranteed the debt of a registrant issued in a public offering, where the guarantee is full, unconditional and joint and several and where the voting interest of the subsidiary is 100% owned by the registrant. The Company is, therefore, presenting condensed consolidating financial information on a parent company, combined guarantor subsidiaries, combined non-guarantor subsidiaries and consolidated basis and should be read in conjunction with the consolidated financial statements. The financial information may not necessarily be indicative of results of operations, cash flows, or financial position had such guarantor subsidiaries operated as independent entities.

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

(In thousands)

	December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,341,680			$114,005			$—		($3,305,316	)		$150,369
Total property and equipment, net	7,951			3,011,387			3,028		(3,842		)	3,018,524
Investment in subsidiaries	(419,159		)	—			—		419,159			—
Other long-term assets	28,124			5,906			—		(17,823		)	16,207
Total Assets		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100
Liabilities and Shareholders’ Equity
Current liabilities		$135,980			$3,491,337			$3,028		($3,308,336	)		$322,009
Long-term liabilities	1,650,589			59,120			—		(1,944		)	1,707,765
Preferred stock	174,422			—			—		—			174,422
Total shareholders’ equity	997,605			(419,159		)	—		402,458			980,904
Total Liabilities and Shareholders’ Equity		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100

	December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,441,633			$105,533			$—		($3,424,288	)		$122,878
Total property and equipment, net	5,953			2,630,707			3,028		(3,878		)	2,635,810
Investment in subsidiaries	(999,793		)	—			—		999,793			—
Other long-term assets	9,270			10,346			—		—			19,616
Total Assets		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304
Liabilities and Shareholders’ Equity
Current liabilities		$165,701			$3,631,401			$3,028		($3,427,308	)		$372,822
Long-term liabilities	1,689,466			114,978			—		15,879			1,820,323
Preferred stock	214,262			—			—		—			214,262
Total shareholders’ equity	387,634			(999,793		)	—		983,056			370,897
Total Liabilities and Shareholders’ Equity		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$162			$1,065,780			$—		$—			$1,065,942
Total costs and expenses	176,406			479,973			—		(37		)	656,342
Income (loss) before income taxes	(176,244		)	585,807			—		37			409,600
Income tax expense	—			(5,173		)	—		—			(5,173		)
Equity in income of subsidiaries	580,634			—			—		(580,634		)	—
Net income		$404,390			$580,634			$—		($580,597	)		$404,427
Dividends on preferred stock	(18,161		)	—			—		—			(18,161		)
Accretion on preferred stock	(3,057		)	—			—		—			(3,057		)
Loss on redemption of preferred stock	(7,133		)	—			—		—			(7,133		)
Net income attributable to common shareholders		$376,039			$580,634			$—		($580,597	)		$376,076

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$302			$745,586			$—		$—			$745,888
Total costs and expenses	195,728			459,057			—		(37		)	654,748
Income (loss) before income taxes	(195,426		)	286,529			—		37			91,140
Income tax expense	—			(4,030		)	—		—			(4,030		)
Equity in income of subsidiaries	282,499			—			—		(282,499		)	—
Net income		$87,073			$282,499			$—		($282,462	)		$87,110
Dividends on preferred stock	(7,781		)	—			—		—			(7,781		)
Accretion on preferred stock	(862		)	—			—		—			(862		)
Loss on redemption of preferred stock	—			—			—		—			—
Net income attributable to common shareholders		$78,430			$282,499			$—		($282,462	)		$78,467

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$482			$443,112			$—		$—			$443,594
Total costs and expenses	208,054			910,522			—		492			1,119,068
Loss before income taxes	(207,572		)	(467,410		)	—		(492		)	(675,474		)
Income tax expense	—			—			—		—			—
Equity in loss of subsidiaries	(467,410		)	—			—		467,410			—
Net loss		($674,982	)		($467,410	)		$—		$466,918			($675,474	)
Dividends on preferred stock	—			—			—		—			—
Accretion on preferred stock	—			—			—		—			—
Loss on redemption of preferred stock	—			—			—		—			—
Net loss attributable to common shareholders		($674,982	)		($467,410	)		$—		$466,918			($675,474	)

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($269,318	)		$922,873			$—		$—			$653,555
Net cash provided by (used in) investing activities	126,905			(792,383		)	—		(130,490		)	(795,968		)
Net cash provided by (used in) financing activities	135,155			(130,490		)	—		130,490			135,155
Net decrease in cash and cash equivalents	(7,258		)	—			—		—			(7,258		)
Cash and cash equivalents, beginning of year	9,540			—			—		—			9,540
Cash and cash equivalents, end of year		$2,282			$—			$—		$—			$2,282

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($121,107	)		$544,088			$—		$—			$422,981
Net cash used in investing activities	(615,364		)	(1,155,340		)	—		611,252			(1,159,452		)
Net cash provided by financing activities	741,817			611,252			—		(611,252		)	741,817
Net increase in cash and cash equivalents	5,346			—			—		—			5,346
Cash and cash equivalents, beginning of year	4,194			—			—		—			4,194
Cash and cash equivalents, end of year		$9,540			$—			$—		$—			$9,540

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by (used in) operating activities		($34,773	)		$307,541			$—			$—			$272,768
Net cash used in investing activities	(312,291		)	(575,824		)	(740		)	269,023			(619,832		)
Net cash provided by financing activities	308,340			268,283			740			(269,023		)	308,340
Net decrease in cash and cash equivalents	(38,724		)	—			—			—			(38,724		)
Cash and cash equivalents, beginning of year	42,918			—			—			—			42,918
Cash and cash equivalents, end of year		$4,194			$—			$—			$—			$4,194

XML

Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow Disclosures

15. Supplemental Cash Flow Information

Supplemental cash flow disclosures and non-cash investing and financing activities are presented below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Operating activities:
Cash paid for interest, net of amounts capitalized		$59,846			$77,213			$75,231
Cash paid for income taxes	—			—			—
Investing activities:
Increase (decrease) in capital expenditure payables and accruals		($53,722	)		$102,272			($21,492	)
Supplemental non-cash investing activities:
Fair value of contingent consideration assets on date of divestiture	(7,880		)	(8,805		)	—
Fair value of contingent consideration liabilities on date of acquisition	—			52,300			—
Liabilities assumed in connection with the Sanchez Acquisition	—			—			4,880
Stock-based compensation expense capitalized to oil and gas properties	4,124			4,482			4,591
Asset retirement obligations capitalized to oil and gas properties	2,132			3,726			1,927
Supplemental non-cash financing activities:
Non-cash loss on extinguishment of debt, net	3,586			1,357			—

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Subsequent Events (Unaudited)

12 Months Ended

Dec. 31, 2018

Subsequent Events [Abstract]

Subsequent Events

16.Subsequent Events (Unaudited)

Hedging

Subsequent to December 31, 2018, the Company entered into the following commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Fixed Price ($ per Bbl)		Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)
Crude oil	2020	Price Swaps	NYMEX WTI	3,000		$55.06	—		—		—
Crude oil	2020	Three-Way Collars	NYMEX WTI	6,000	—			$45.00		$55.00		$64.69

Contingent Consideration Arrangements

For the year ended December 31, 2018, the specified pricing thresholds related to the Contingent ExL Consideration, the Contingent Niobrara Consideration, and the Contingent Utica Consideration were exceeded. As a result, in January 2019, we paid $50.0 million and received $10.0 million from settlement of these contingent consideration arrangements.

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Supplemental Disclosures About Oil And Gas Producing Activities

12 Months Ended

Dec. 31, 2018

Oil and Gas Exploration and Production Industries Disclosures [Abstract]

Supplemental Disclosures About Oil And Gas Producing Activities

17. Supplemental Disclosures about Oil and Gas Producing Activities (Unaudited)

Costs Incurred

Costs incurred in oil and gas property acquisition, exploration and development activities are summarized below:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
Property acquisition costs
Proved properties		$47,370		$303,307		$90,661
Unproved properties	182,220		525,061		113,535
Total property acquisition costs	229,590		828,368		204,196
Exploration costs	48,570		91,098		37,508
Development costs	809,637		569,982		374,134
Total costs incurred		$1,087,797		$1,489,448		$615,838

Costs incurred exclude capitalized interest on unproved properties of $36.6 million, $28.3 million, and $17.0 million for the years ended December 31, 2018, 2017 and 2016, respectively. Included in exploration and development costs are non-cash additions related to the estimated future asset retirement obligations of the Company’s oil and gas properties of $1.9 million, $3.5 million and $1.9 million for the years ended December 31, 2018, 2017 and 2016, respectively. Non-cash additions related to the estimated future asset retirement obligations associated with the Devon Acquisition of $0.2 million, the ExL Acquisition of $0.1 million, and the Sanchez Acquisition of $2.0 million are included in acquisition costs of proved properties for the years ended December 31, 2018, 2017 and 2016, respectively. The internal cost of employee compensation and benefits, including stock-based compensation, capitalized to proved or unproved oil and gas properties of $17.0 million, $14.8 million and $10.5 million for the years ended December 31, 2018, 2017 and 2016, respectively, are included in exploration, development and unproved property acquisition costs.

Proved Oil and Gas Reserve Quantities

Proved oil and gas reserves are generally those quantities of crude oil, NGLs and natural gas, which by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible in future years from known reservoirs under existing economic conditions, operating methods and government regulations. Proved developed reserves include reserves that can be expected to be produced through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well. Proved undeveloped reserves include reserves that are expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion. Proved reserve quantities at December 31, 2018, 2017, and 2016 and the related discounted future net cash flows before income taxes are based on estimates prepared by Ryder Scott Company, L.P. Such estimates have been prepared in accordance with guidelines established by the SEC. All of the Company’s proved reserves are attributable to properties within the United States. 

The Company’s proved reserves and changes in proved reserves are as follows:

	Crude Oil (MBbls)		NGLs (MBbls)		Natural Gas (MMcf)		Total Proved Reserves (MBoe)
Proved reserves:
January 1, 2016	109,588		20,221		244,938		170,632
Extensions and discoveries	40,074		8,612		59,318		58,572
Revisions of previous estimates	(16,731	)	(3,230	)	1,481		(19,713	)
Purchases of reserves in place	4,810		122		7,282		6,145
Production	(9,423	)	(1,788	)	(25,574	)	(15,473	)
December 31, 2016	128,318		23,937		287,445		200,163
Extensions and discoveries	50,476		13,781		98,980		80,754
Revisions of previous estimates	(19,838	)	(909	)	27,774		(16,118	)
Purchases of reserves in place	21,634		8,642		94,962		46,103
Sales of reserves in place	(650	)	(526	)	(170,219	)	(29,546	)
Production	(12,566	)	(2,327	)	(28,472	)	(19,639	)
December 31, 2017	167,374		42,598		310,470		261,717
Extensions and discoveries	65,352		30,195		212,758		131,007
Revisions of previous estimates	(31,287	)	1,936		(6,006	)	(30,352	)
Purchases of reserves in place	2,205		967		7,953		4,498
Sales of reserves in place	(9,676	)	(2,872	)	(17,475	)	(15,461	)
Production	(14,232	)	(3,701	)	(24,639	)	(22,040	)
December 31, 2018	179,736		69,123		483,061		329,369
Proved developed reserves:
December 31, 2015	42,311		7,933		154,725		76,032
December 31, 2016	51,062		9,387		187,054		91,625
December 31, 2017	69,632		17,447		131,355		108,972
December 31, 2018	75,267		25,809		178,941		130,899
Proved undeveloped reserves:
December 31, 2015	67,277		12,288		90,213		94,600
December 31, 2016	77,256		14,550		100,391		108,538
December 31, 2017	97,742		25,151		179,115		152,745
December 31, 2018	104,469		43,314		304,120		198,470

Extensions and discoveries

For the year ended December 31, 2018, the Company added 12,687 MBoe of proved developed reserves and 118,320 MBoe of proved undeveloped reserves through its drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 30% and 70%, respectively, of the total extensions and discoveries.

For the year ended December 31, 2017, the Company added 6,473 MBoe of proved developed reserves and 74,281 MBoe of proved undeveloped reserves through its drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 51% and 48%, respectively, of the total extensions and discoveries.

For the year ended December 31, 2016, the Company added 6,525 MBoe of proved developed reserves and 52,047 MBoe of proved undeveloped reserves through its drilling program and associated offset locations. Eagle Ford and Delaware Basin comprised 79% and 20%, respectively, of the total extensions and discoveries.

Revisions of previous estimates

For the year ended December 31, 2018, revisions of previous estimates reduced the Company’s proved reserves by 30,352 MBoe. Included in revisions of previous estimates were:

• Positive revisions due to price of 3,764 MBoe.

• Net negative revisions of 12,363 MBoe primarily due to negative revisions of 14,907 MBoe in the Eagle Ford, partially offset by positive revisions of 2,544 MBoe in the Delaware Basin. The negative revisions in the Eagle Ford were primarily a result of completion of new wells that negatively impacted the production of adjacent existing producing wells and the associated impact to certain PUD locations, as well as a reduction in spacing and the average lateral length for certain PUD locations.

• Negative revisions of 21,753 MBoe, primarily in the Eagle Ford due to changes in the Company’s previously approved development plan which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The primary drivers of the changes in our previously approved development plan are the reallocation of capital to areas providing the greatest opportunities to increase capital efficiency and maximize project-level economics within our reduced capital expenditure plan, which includes a shift to larger-scale development projects.

For the year ended December 31, 2017, revisions of previous estimates reduced the Company’s proved reserves by 16,118 MBoe. Included in revisions of previous estimates were:

• Positive revisions due to price of 2,684 MBoe.

• Negative revisions of 4,500 MBoe primarily in the Eagle Ford due to a downward shift of the type curve for certain PUD locations partially offset by positive revisions due to well performance in Marcellus which occurred prior to the sale in November 2017.

• Negative revisions in proved undeveloped reserves of 14,302 MBoe in the Eagle Ford due to changes in the Company’s previously approved development plan which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The drivers of the changes in the Company’s previously approved development plan were the ExL Acquisition and the move to a more efficient development plan which includes drilling and completing larger pads.

For the year ended December 31, 2016, revisions of previous estimates reduced the Company’s proved reserves by 19,713 MBoe. Included in revisions of previous estimates were:

• Negative revisions due to price of 6,705 MBoe primarily due to the decline in the 12-Month Average Realized price for crude oil, of which 3,228 MBoe related to proved developed and proved undeveloped locations that were no longer economic and 3,477 MBoe related to reductions in the level of economic reserves in proved developed and proved undeveloped reserve locations due to loss of tail reserves;

• Negative revisions of 6,083 MBoe primarily in Eagle Ford as the EURs for certain PUD locations were reduced as a result of tighter spacing and shorter lateral lengths partially offset by positive revisions in Marcellus;

• Negative revisions in proved undeveloped reserves of 6,925 MBoe in the Eagle Ford due to changes in the Company’s previously approved development plan which resulted in the timing of development for certain PUD locations to move beyond five years from initial booking. The drivers of the changes in the Company’s previously approved development plan were the move to a more efficient development plan which includes drilling and completing larger pads and the recent Sanchez Acquisition.

Purchases of reserves in place

For the year ended December 31, 2018, purchases of reserves in place included 4,498 MBoe of proved developed reserves associated with the Devon Acquisition.

For the year ended December 31, 2017, purchases of reserves in place included 26,009 MBoe of proved developed reserves and 20,094 MBoe of proved undeveloped reserves associated with the ExL Acquisition.

For the year ended December 31, 2016, purchases of reserves in place included 4,978 MBoe of proved developed reserves and 1,167 MBoe of proved undeveloped reserves associated with the Sanchez Acquisition.

Sales of reserves in place

For the year ended December 31, 2018, sales of reserves in place included 13,465 MBoe of proved developed reserves and 1,996 MBoe of proved undeveloped reserves associated with the Eagle Ford and Niobrara Formation divestitures.

For the year ended December 31, 2017, sales of reserves in place included 22,249 MBoe of proved developed reserves and 7,297 MBoe of proved undeveloped reserves associated with the Marcellus Shale and Utica Shale divestitures.

There were no sales of reserves in place for the year ended December 31, 2016.

Standardized Measure

The standardized measure of discounted future net cash flows relating to proved reserves is as follows:

	December 31,
	2018			2017			2016
	(In thousands)
Future cash inflows		$14,461,143			$10,109,752			$5,903,629
Future production costs	(4,572,397		)	(3,202,201		)	(2,241,928		)
Future development costs	(1,964,450		)	(1,699,909		)	(1,264,493		)
Future income taxes (1)	(1,005,837		)	(445,056		)	—
Future net cash flows	6,918,459			4,762,586			2,397,208
Less 10% annual discount to reflect timing of cash flows	(3,282,901		)	(2,297,544		)	(1,093,779		)
Standardized measure of discounted future net cash flows		$3,635,558			$2,465,042			$1,303,429

(1) Future income taxes in the calculation of the standardized measure of discounted future net cash flows were zero as of December 31, 2016, as the historical tax basis of proved oil and gas properties, net operating loss carryforwards, and future tax deductions exceeded the undiscounted future net cash flows before income taxes of the Company’s proved oil and gas reserves as of December 31, 2016.

Proved reserve estimates and future cash flows are based on the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the year. The following average realized prices were used in the calculation of proved reserves and the standardized measure of discounted future net cash flows.

	Years Ended December 31,
	2018		2017		2016
Crude oil ($/Bbl)		$63.80		$49.87		$39.60
NGLs ($/Bbl)		$26.15		$19.78		$11.66
Natural gas ($/Mcf)		$2.46		$2.96		$1.89

Future operating and development costs are computed primarily by the Company’s petroleum engineers by estimating the expenditures to be incurred in developing and producing the Company’s proved reserves at the end of the year, based on current costs and assuming continuation of existing economic conditions. Future income taxes, which include the effects of the Tax Cuts and Jobs Act for the years ended December 31, 2018 and 2017, are based on current statutory rates, adjusted for the tax basis of oil and gas properties and available applicable tax assets. A discount factor of 10% was used to reflect the timing of future net cash flows. The standardized measure of discounted future net cash flows is not intended to represent the replacement cost or fair value of the Company’s oil and gas properties. An estimate of fair value would also take into account, among other things, the recovery of reserves not presently classified as proved, anticipated future changes in prices and costs, and a discount factor more representative of the time value of money and the risks inherent in proved reserve estimates.

Changes in Standardized Measure

Changes in the standardized measure of discounted future net cash flows relating to proved reserves are summarized below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Standardized measure at beginning of year		$2,465,042			$1,303,429			$1,365,224
Revisions to reserves proved in prior years:
Net change in sales prices and production costs related to future production		$809,182			$710,773			($346,763	)
Net change in estimated future development costs	(9,627		)	(51,854		)	74,407
Net change due to revisions in quantity estimates	(250,817		)	(42,214		)	(150,245		)
Accretion of discount	263,837			130,343			136,522
Changes in production rates (timing) and other	(19,539		)	(116,056		)	(111,137		)
Total revisions to reserves proved in prior years	793,036			630,992			(397,216		)
Net change due to extensions and discoveries, net of estimated future development and production costs	1,127,748			597,502			313,201
Net change due to purchases of reserves in place	60,264			452,932			43,426
Net change due to divestitures of reserves in place	(181,308		)	(106,608		)	—
Sales of crude oil, NGLs and natural gas produced, net of production costs	(843,333		)	(566,258		)	(320,272		)
Previously estimated development costs incurred	496,600			326,383			299,066
Net change in income taxes	(282,491		)	(173,330		)	—
Net change in standardized measure of discounted future net cash flows	1,170,516			1,161,613			(61,795		)
Standardized measure at end of year		$3,635,558			$2,465,042			$1,303,429

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Selected Quarterly Financial Data

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data

18. Quarterly Financial Data (Unaudited)

The following is a summary of the unaudited quarterly financial data for the years ended December 31, 2018 and 2017:

Year Ended December 31, 2018	First Quarter (3)		Second Quarter (4)		Third Quarter		Fourth Quarter (5)
	(In thousands, except per share amounts)
Total revenues		$225,280		$263,973		$303,375		$273,314
Operating profit (1)		$108,992		$140,265		$165,141		$129,405
Net income		$27,492		$35,309		$81,346		$260,280
Net income attributable to common shareholders		$14,743		$30,095		$76,118		$255,120
Net income attributable to common shareholders per common share (2)
Basic		$0.18		$0.37		$0.88		$2.79
Diluted		$0.18		$0.36		$0.85		$2.75

Year Ended December 31, 2017	First Quarter		Second Quarter		Third Quarter (6)		Fourth Quarter (7)
	(In thousands, except per share amounts)
Total revenues		$151,355		$166,483		$181,279		$246,771
Operating profit (1)		$57,953		$63,147		$69,364		$113,205
Net income (loss)		$40,021		$56,306		$7,823		($17,040	)
Net income (loss) attributable to common shareholders		$40,021		$56,306		$5,574		($23,434	)
Net income (loss) attributable to common shareholders per common share (2)
Basic		$0.61		$0.86		$0.07		($0.29	)
Diluted		$0.61		$0.85		$0.07		($0.29	)

(1) Total revenues less lease operating expense, production taxes, ad valorem taxes and DD&A.

(2) The sum of quarterly net income (loss) attributable to common shareholders per common share does not agree with the total year net income (loss) attributable to common shareholders per common share as each computation is based on the weighted average of common shares outstanding during the period.

(3) First quarter of 2018 included the following:

a. $29.6 million loss on derivatives, net

b. $8.7 million loss on extinguishment of debt as a result of the redemption of $320.0 million aggregate principal amount of 7.50% Senior Notes.

b. $7.1 million loss on redemption of preferred stock as a result of the redemption of 50,000 shares of Preferred Stock.

(4) Second quarter of 2018 included the following:

a. $67.7 million loss on derivatives, net

(5) Fourth quarter of 2018 included the following:

a. $159.4 million gain on derivatives, net

(6) Third quarter of 2017 included the following:

a. $24.4 million loss on derivatives, net

(7) Fourth quarter of 2017 included the following:

a. $86.1 million loss on derivatives, net.

b. $4.2 million loss on extinguishment of debt as a result of the redemption of $150.0 million aggregate principal amount of 7.50% Senior Notes.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Subsequent Events, Policy [Policy Text Block]

Subsequent Events

The Company evaluates subsequent events through the date the financial statements are issued. See “Note 16. Subsequent Events” for further discussion.

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The consolidated financial statements include the accounts of the Company after elimination of intercompany transactions and balances and are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). The Company proportionately consolidates its undivided interests in oil and gas properties as well as investments in unincorporated entities, such as partnerships and limited liability companies where the Company, as a partner or member, has undivided interests in the oil and gas properties.

Reclassifications

Certain reclassifications have been made to prior period amounts to conform to the current period presentation. Such reclassifications had no material impact on prior period amounts.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods reported. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results.

Significant estimates include volumes of proved oil and gas reserves, which are used in calculating depreciation, depletion and amortization (“DD&A”) of proved oil and gas property costs, the present value of estimated future net revenues included in the full cost ceiling test, estimates of future taxable income used in assessing the realizability of deferred tax assets, and the estimated timing of cash outflows underlying asset retirement obligations. Oil and gas reserve estimates, and therefore calculations based on such reserve estimates, are subject to numerous inherent uncertainties, the accuracy of which, is a function of the quality and quantity of available data, the application of engineering and geological interpretation and judgment to available data and the interpretation of mineral leaseholds and other contractual arrangements, including adequacy of title and drilling requirements. These estimates also depend on assumptions regarding quantities and production rates of recoverable oil and gas reserves, oil and gas prices, timing and amounts of development costs and operating expenses, all of which will vary from those assumed in the Company’s estimates. Other significant estimates are involved in determining acquisition date fair values of assets acquired and liabilities assumed, impairments of unevaluated leasehold costs, fair values of commodity derivative assets and liabilities, fair values of contingent consideration arrangements, fair value of preferred stock upon issuance, grant date fair value of stock-based awards, and evaluating disputed claims, interpreting contractual arrangements and contingencies. Estimates are based on current assumptions that may be materially affected by the results of subsequent drilling and completion, testing and production as well as subsequent changes in oil and gas prices, interest rates and the market value and volatility of the Company’s common stock.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash equivalents include highly liquid investments with original maturities of three months or less. Certain of the Company’s cash accounts are zero-balance controlled disbursement accounts that do not have the right of offset against the Company’s other cash balances. The outstanding checks written against these zero-balance accounts have been classified as a component of accounts payable in the consolidated balance sheets and totaled $70.4 million and $62.6 million as of December 31, 2018 and 2017, respectively.

Accounts Receivable

Accounts Receivable

The Company’s accounts receivable consist primarily of receivables from crude oil, NGL, and natural gas purchasers and joint interest owners in properties the Company operates. The Company generally has the right to withhold future revenue distributions to recover past due receivables from joint interest owners. Generally, the Company’s receivables from the sale of crude oil are collected within one month and receivables from the sale of NGL and natural gas are collected within two months. The Company establishes an allowance for doubtful accounts when it determines it is probable that it will not collect all or a part of an accounts receivable balance. The Company assesses the collectability of its accounts receivable on a quarterly basis and adjusts the allowance as necessary using the specific identification method. The Company’s allowance for doubtful accounts and bad debt expense was immaterial for all periods presented.

Concentration of Credit Risk

Concentration of Credit Risk and Major Customers

The concentration of accounts receivable from entities in the oil and gas industry may impact the Company’s overall credit risk such that these entities may be similarly affected by changes in economic and other industry conditions. The Company generally does not require collateral from its purchasers or joint interest owners.

The Company does not believe the loss of any one of its purchasers would materially affect its ability to sell the oil and gas it produces as other purchasers are available in its primary areas of activity. The Company had the following major customers that represented 10% or more of its total revenues for at least one of the periods presented:

	Years Ended December 31,
	2018	2017	2016
Shell Trading (US) Company	73%	69%	56%
Flint Hills Resources, LP	*	*	15%

* - Less than 10% for the respective year.

The Company’s counterparties to its commodity derivative instruments include lenders under the Company’s credit agreement (“Lender Counterparty”) as well as counterparties who are not lenders under the Company’s credit agreement (“Non-Lender Counterparty”). As each Lender Counterparty has an investment grade credit rating and the Company has obtained a guaranty from each Non-Lender Counterparty’s parent company which has an investment grade credit rating, the Company believes it does not have significant credit risk with its commodity derivative instrument counterparties. Although the Company does not currently anticipate nonperformance from its counterparties, it continually monitors the credit ratings of each Lender Counterparty and each Non-Lender Counterparty’s parent company. The Company executes its derivative instruments with seventeen counterparties to minimize its credit exposure to any individual counterparty.

Major Customers

The Company does not believe the loss of any one of its purchasers would materially affect its ability to sell the oil and gas it produces as other purchasers are available in its primary areas of activity. The Company had the following major customers that represented 10% or more of its total revenues for at least one of the periods presented:

	Years Ended December 31,
	2018	2017	2016
Shell Trading (US) Company	73%	69%	56%
Flint Hills Resources, LP	*	*	15%

Oil and Gas Properties

Oil and Gas Properties

Oil and gas properties are accounted for using the full cost method of accounting under which all productive and nonproductive costs directly associated with property acquisition, exploration and development activities are capitalized to cost centers established on a country-by-country basis. The internal cost of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities are capitalized to either proved or unproved oil and gas properties based on the type of activity. Internal costs related to production, general corporate overhead and similar activities are expensed as incurred.

Capitalized oil and gas property costs within a cost center are amortized on an equivalent unit-of-production method, converting natural gas to barrels of oil equivalent at the ratio of six thousand cubic feet of gas to one barrel of oil, which represents their approximate relative energy content. The equivalent unit-of-production amortization rate is computed on a quarterly basis by dividing current quarter production by proved oil and gas reserves at the beginning of the quarter then applying such amortization rate to proved oil and gas property costs, which includes estimated asset retirement costs, less accumulated amortization, plus the estimated future expenditures (based on current costs) to be incurred in developing proved reserves, net of estimated salvage values.

Unproved properties, not being amortized, include unevaluated leasehold and seismic costs associated with specific unevaluated properties and related capitalized interest. Individually significant unevaluated leaseholds are assessed on a quarterly basis to determine whether or not and to what extent proved reserves have been assigned to the properties or if an impairment has occurred, in which case the related costs along with associated capitalized interest are reclassified to proved oil and gas properties. Factors the Company considers in its impairment assessment include drilling results by the Company and other operators, the terms of oil and gas leases not held by production and drilling, completion, and infrastructure capital expenditure plans. Individually insignificant unevaluated leaseholds are grouped by major area and added to proved oil and gas properties based on the average primary lease term of the properties. Geological and geophysical costs not associated with specific prospects are recorded to proved oil and gas property costs as incurred. The amount of interest costs capitalized is determined on a quarterly basis based on the average balance of unproved properties and the weighted average interest rate of outstanding borrowings.

At the end of each quarter, the net book value of oil and gas properties, less related deferred income taxes, are limited to the “cost center ceiling” equal to (i) the sum of (a) the present value of estimated future net revenues from proved oil and gas reserves, less estimated future expenditures to be incurred in developing and producing the proved reserves computed using a discount factor of 10%, (b) the costs of unproved properties not being amortized, and (c) the lower of cost or estimated fair value of unproved properties included in the costs being amortized; less (ii) related income tax effects. Any excess of the net book value of oil and gas properties, less related deferred income taxes, over the cost center ceiling is recognized as an impairment of proved oil and gas properties. An impairment recognized in one period may not be reversed in a subsequent period even if higher commodity prices in the future result in a cost center ceiling in excess of the net book value of oil and gas properties, less related deferred income taxes.

The estimated future net revenues used in the cost center ceiling are calculated using the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the 12-month period prior to the end of the current quarter (“12-Month Average Realized Price”), held flat for the life of the production, except where different prices are fixed and determinable from applicable contracts for the remaining term of those contracts. Prices do not include the impact of commodity derivative instruments as the Company elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment.

Proceeds from the sale of proved and unproved oil and gas properties are recognized as a reduction of proved oil and gas property costs with no gain or loss recognized, unless the sale significantly alters the relationship between capitalized costs and proved reserves of oil and gas attributable to a cost center. For the years ended December 31, 2018, 2017 and 2016, the Company did not have any sales of oil and gas properties that significantly altered such relationship.

Depreciation of other property and equipment is recognized using the straight-line method based on estimated useful lives ranging from three to ten years.

Debt Issuance Costs

Debt Issuance Costs

Debt issuance costs associated with the revolving credit facility are classified in “Other long-term assets” in the consolidated balance sheets and are amortized to interest expense on a straight-line basis over the term of the facility. Debt issuance costs associated with the senior notes are classified as a reduction of the related long-term debt in the consolidated balance sheets and are amortized to interest expense using the effective interest method over the terms of the related senior notes.

Financial Instruments

Financial Instruments

The Company’s financial instruments consist of cash and cash equivalents, receivables, payables, commodity derivative assets and liabilities, contingent consideration arrangements determined to be embedded derivatives and long-term debt. The carrying amounts of cash and cash equivalents, receivables and payables approximate fair value due to the highly liquid or short-term nature of these instruments. The fair values of the Company’s commodity derivative assets and liabilities are based on a third-party industry-standard pricing model using contract terms and prices and assumptions and inputs that are substantially observable in active markets throughout the full term of the instruments, including forward oil and gas price curves, discount rates, volatility factors and credit risk adjustments. The fair values of the Company’s contingent consideration arrangements are determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as future commodity prices, volatility factors for the future commodity prices and a risk adjusted discount rate.

The carrying amount of long-term debt associated with borrowings outstanding under the Company’s revolving credit facility approximates fair value as borrowings bear interest at variable rates. The carrying amounts of the Company’s senior notes and other long-term debt may not approximate fair value because carrying amounts are net of unamortized premiums and debt issuance costs, and the senior notes and other long-term debt bear interest at fixed rates. See “Note 6. Long-Term Debt” and “Note 13. Fair Value Measurements” for additional discussion.

Asset Retirement Obligations

Asset Retirement Obligations

The Company’s asset retirement obligations represent the present value of the estimated future costs associated with plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land in accordance with the terms of oil and gas leases and applicable local, state and federal laws. Determining asset retirement obligations requires estimates of the costs of plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land as well as estimates of the economic lives of the oil and gas wells and future inflation rates. The resulting estimate of future cash outflows are discounted using a credit-adjusted risk-free interest rate that corresponds with the timing of the cash outflows. Cost estimates consider historical experience, third party estimates, the requirements of oil and gas leases and applicable local, state and federal laws, but do not consider estimated salvage values. Asset retirement obligations are recognized when the well is drilled or acquired or when the production equipment and facilities are installed or acquired with an associated increase in proved oil and gas property costs. Asset retirement obligations are accreted each period through DD&A to their expected settlement values with any difference between the actual cost of settling the asset retirement obligations and recorded amount being recognized as an adjustment to proved oil and gas property costs. Cash paid to settle asset retirement obligations is included in net cash provided by operating activities in the consolidated statements of cash flows. On a quarterly basis, when indicators suggest there have been material changes in the estimates underlying the obligation, the Company reassesses its asset retirement obligations to determine whether any revisions to the obligations are necessary. At least annually, the Company reassesses all of its asset retirement obligations to determine whether any revisions to the obligations are necessary. Revisions typically occur due to changes in estimated costs or economic lives of the oil and gas wells, or if federal or state regulators enact new requirements regarding plugging and abandoning oil and gas wells. See “Note 7. Asset Retirement Obligations” for additional discussion.

Commitments and Contingencies

Commitments and Contingencies

Liabilities are recognized for contingencies when (i) it is both probable that an asset has been impaired or that a liability has been incurred and (ii) the amount of such loss is reasonably estimable. See “Note 8. Commitments and Contingencies” for additional discussion.

Revenue Recognition

Revenue Recognition

The Company’s revenues are comprised solely of revenues from customers and include the sale of crude oil, NGLs, and natural gas. The Company believes that the disaggregation of revenue into these three major product types appropriately depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors based on its single geographic location. Crude oil, NGL, and natural gas revenues are recognized at a point in time when production is sold to a purchaser at a fixed or determinable price, delivery has occurred, control has transferred and collectability of the revenue is probable. The transaction price used to recognize revenue is a function of the contract billing terms. Revenue is invoiced by calendar month based on volumes at contractually based rates with payment typically required within 30 days of the end of the production month. At the end of each month when the performance obligation is satisfied, the variable consideration can be reasonably estimated and amounts due from customers are accrued in “Accounts receivable, net” in the consolidated balance sheets. As of December 31, 2018 and December 31, 2017, receivables from contracts with customers were $77.1 million and $85.6 million, respectively. Taxes assessed by governmental authorities on crude oil, NGL, and natural gas sales are presented separately from such revenues in the consolidated statements of operations.

Crude oil sales. Crude oil production is primarily sold at the wellhead at an agreed upon index price, net of pricing differentials. Revenue is recognized when control transfers to the purchaser at the wellhead, net of transportation costs incurred by the purchaser.

Natural gas and NGL sales. Natural gas is delivered to a midstream processing entity at the wellhead or the inlet of the midstream processing entity’s system. The midstream processing entity gathers and processes the natural gas and remits proceeds for the resulting sales of NGLs and residue gas. The Company evaluates whether it is the principal or agent in the transaction and has concluded it is the principal and the purchasers of the NGLs and residue gas are the customers. Revenue is recognized on a gross basis, with gathering, processing and transportation fees recognized as lease operating expense in the consolidated statements of operations as the Company maintains control throughout processing.

Transaction Price Allocated to Remaining Performance Obligations. The Company applied the practical expedient in ASC 606 exempting the disclosure of the transaction price allocated to remaining performance obligations if the variable consideration is allocated entirely to a wholly unsatisfied performance obligation. Each unit of product typically represents a separate performance obligation, therefore, future volumes are wholly unsatisfied and disclosure of the transaction price allocated to remaining performance obligations is not required.

Derivative Instruments

Derivative Instruments

The Company uses commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of its forecasted sales of production and achieve a more predictable level of cash flow. All commodity derivative instruments are recorded in the consolidated balance sheets as either an asset or liability measured at fair value. The Company nets its commodity derivative instrument fair value amounts executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to International Swap Dealers Association Master Agreements (“ISDAs”), which provide for net settlement over the term of the contract and in the event of default or termination of the contract. The Company does not enter into commodity derivative instruments for speculative purposes.

The Company has entered into agreements for acquisitions or divestitures of oil and gas properties that include obligations to pay the seller or rights to receive from the buyer, respectively, additional consideration if commodity prices exceed specified thresholds during certain periods in the future. These contingent consideration assets and liabilities are required to be bifurcated and accounted for separately as derivative instruments as they are not considered to be clearly and closely related to the host contract, and recognized at their acquisition or divestiture date fair value in the consolidated balance sheets.

The Company has elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment. Therefore, all gains and losses as a result of changes in the fair value of commodity derivative instruments, as well as its contingent consideration arrangements, are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the changes occur. Deferred premium obligations associated with the Company’s commodity derivative instruments are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations in the period in which the deferred premium obligations are incurred.

Cash flows are impacted to the extent that settlements of commodity derivative instruments, including deferred premium obligations, and contingent consideration arrangements result in cash received or paid during the period and are recognized as “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows. Cash received or paid in settlement of contingent consideration assets or liabilities, respectively, are classified as cash flows from financing activities up to the divestiture or acquisition date fair value with any excess classified as cash flows from operating activities.

The Company’s Board of Directors establishes risk management policies and, on a quarterly basis, reviews its commodity derivative instruments, including volumes, types of instruments and counterparties. These policies require that commodity derivative instruments be executed only by the President or Chief Financial Officer after consultation with and concurrence by the President, Chief Financial Officer and Chairman of the Board. See “Note 12. Derivative Instruments” for additional discussion.

Preferred Stock

Preferred Stock and Common Stock Warrants

The Company applies the accounting standards for distinguishing liabilities from equity when determining the classification and measurement of preferred stock. Preferred stock that is not mandatorily redeemable is excluded from liability classification and is evaluated for classification in shareholders’ equity or temporary equity. As the number of common shares that could be delivered upon the holders’ optional redemption is indeterminate, the Company cannot assert that it will be able to settle in shares of its common stock and, as a result, presents preferred stock as temporary equity. On a quarterly basis, the Company reassesses the presentation of preferred stock in the consolidated balance sheets.

When preferred stock is issued with common stock warrants, the common stock warrants are evaluated separately to determine if they are a freestanding financial instrument to determine whether they must be recorded as a derivative instrument. The Company further evaluates the common stock warrants for equity classification and has determined they qualify for equity classification and, therefore, are presented in additional paid-in capital in the consolidated balance sheets. The preferred stock and common stock warrants are recorded based on the net proceeds received allocated to the two instrument’s relative fair values. The preferred stock is subject to accretion from its relative fair value at the issuance date to the redemption value using the effective interest method. The common stock warrants do not require further adjustments from their relative fair value at the issuance date.

Dividends and accretion associated with preferred stock are presented in the consolidated statements of operations as reductions to net income, or increases of net loss, to derive net income (loss) attributable to common shareholders. Dividend payments are presented as a financing activity in the consolidated statement of cash flows.

See “Note 9. Preferred Stock and Common Stock Warrants” for further details of the Company’s outstanding preferred stock and common stock warrants.

Warrants

When preferred stock is issued with common stock warrants, the common stock warrants are evaluated separately to determine if they are a freestanding financial instrument to determine whether they must be recorded as a derivative instrument. The Company further evaluates the common stock warrants for equity classification and has determined they qualify for equity classification and, therefore, are presented in additional paid-in capital in the consolidated balance sheets. The preferred stock and common stock warrants are recorded based on the net proceeds received allocated to the two instrument’s relative fair values. The preferred stock is subject to accretion from its relative fair value at the issuance date to the redemption value using the effective interest method. The common stock warrants do not require further adjustments from their relative fair value at the issuance date.

Dividends and accretion associated with preferred stock are presented in the consolidated statements of operations as reductions to net income, or increases of net loss, to derive net income (loss) attributable to common shareholders. Dividend payments are presented as a financing activity in the consolidated statement of cash flows.

See “Note 9. Preferred Stock and Common Stock Warrants” for further details of the Company’s outstanding preferred stock and common stock warrants.

Stock-Based Compensation

Stock-Based Compensation

The Company recognized stock-based compensation expense, net of amounts capitalized to oil and gas properties associated with restricted stock awards and units, stock appreciation rights to be settled in cash (“Cash SARs”), and performance share awards, which is recognized as “General and administrative expense, net” in the consolidated statements of operations. The Company accounts for forfeitures of equity-based incentive awards as they occur. See “Note 11. Stock-Based Compensation” for further details of the awards discussed below.

Restricted Stock Awards and Units. Stock-based compensation expense is based on the price of the Company’s common stock on the grant date and recognized over the vesting period (generally one to three years) using the straight-line method, except for awards or units with performance conditions, in which case the Company uses the graded vesting method. For restricted stock awards and units granted to independent contractors, stock-based compensation expense is based on the fair value remeasured at each reporting period and recognized over the vesting period (generally three years) using the straight-line method, except for awards or units with performance conditions, in which case the Company uses the graded vesting method.

Stock Appreciation Rights. For Cash SARs, stock-based compensation expense is initially based on the grant date fair value determined using a Black-Scholes-Merton option pricing model, with the fair value liability subsequently remeasured at the end of each reporting period and recognized over the vesting period (generally two or three years) using the straight-line method, except for Cash SARs with performance conditions, in which case the Company uses the graded vesting method. For periods subsequent to vesting and prior to exercise, stock-based compensation expense is based on the fair value liability remeasured at the end of each reporting period based on the intrinsic value of the Cash SAR. The liability for Cash SARs is classified as “Other current liabilities” for the portion of the fair value liability attributable to awards that are vested or are expected to vest within the next 12 months, with the remainder classified as “Other long-term liabilities” in the consolidated balance sheets. Cash SARs typically expire between five and seven years after the date of grant. If Cash SARs expire unexercised, the cumulative compensation costs associated with such Cash SARs will be zero.

Performance Shares. For performance shares, stock-based compensation expense is based on the grant date fair value determined using a Monte Carlo valuation model and recognized over an approximate three year vesting period using the straight-line method. Each performance share represents the right to receive one share of common stock, however, the number of performance shares that vest ranges from zero to 200% of the target performance shares granted based on the total shareholder return (“TSR”) of the Company’s common stock relative to the TSR achieved by a specified industry peer group over an approximate three year performance period, the last day of which is also the vesting date. Compensation costs related to the performance shares will be recognized if the requisite service period is fulfilled and the performance condition is met, even if the market condition is not achieved.

Income Taxes

Income Taxes

Income taxes are recognized based on earnings reported for tax return purposes in addition to a provision for deferred income taxes. Deferred income taxes are recognized at the end of each reporting period for the future tax consequences of cumulative temporary differences between the tax basis of assets and liabilities and their reported amounts in the Company’s consolidated financial statements based on existing tax laws and enacted statutory tax rates applicable to the periods in which the temporary differences are expected to affect taxable income. The Company assesses the realizability of its deferred tax assets on a quarterly basis by considering all available evidence (both positive and negative) to determine whether it is more likely than not that all or a portion of the deferred tax assets will not be realized and a valuation allowance is required. In making this assessment, the Company evaluates possible sources of taxable income that may be available to realize the deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies. See “Note 5. Income Taxes” for further discussion of the deferred tax assets valuation allowance. The Company classifies interest and penalties associated with income taxes as interest expense. The Company applies the tax law ordering approach to determine the sequence in which deferred tax assets and other tax attributes are utilized.

Earnings Per Share

Net Income (Loss) Attributable to Common Shareholders Per Common Share

Basic net income (loss) attributable to common shareholders per common share is based on the weighted average number of shares of common stock outstanding during the year. Diluted net income (loss) attributable to common shareholders per common share is based on the weighted average number of common shares and all potentially dilutive common shares outstanding during the year which include restricted stock awards and units, performance shares, and common stock warrants. The Company includes the number of restricted stock awards and units and common stock warrants in the calculation of diluted weighted average shares outstanding when the grant date or exercise prices are less than the average market prices of the Company’s common stock for the period. The Company includes the number of performance shares in the calculation of diluted weighted average common shares outstanding based on the number of shares, if any, that would be issuable as if the end of the period was the end of the performance period. The Company has excluded any impact of the preferred stock to the calculation of diluted weighted average common shares outstanding as it has the positive intent and ability to redeem the preferred stock in cash. When a loss attributable to common shareholders exists, all potentially dilutive common shares outstanding are anti-dilutive and therefore excluded from the calculation of diluted weighted average shares outstanding.

The following table summarizes the calculation of net income (loss) attributable to common shareholders per common share:

	Years Ended December 31,
	2018			2017			2016
	(In thousands, except per share amounts)
Net Income (Loss)		$404,427			$87,110			($675,474	)
Dividends on preferred stock	(18,161		)	(7,781		)	—
Accretion on preferred stock	(3,057		)	(862		)	—
Loss on redemption of preferred stock	(7,133		)	—			—
Net Income (Loss) Attributable to Common Shareholders		$376,076			$78,467			($675,474	)
Basic weighted average common shares outstanding	85,509			73,421			59,932
Dilutive effect of restricted stock and performance shares	949			269			—
Dilutive effect of common stock warrants	685			303			—
Diluted weighted average common shares outstanding	87,143			73,993			59,932
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$4.40			$1.07			($11.27	)
Diluted		$4.32			$1.06			($11.27	)

The computation of diluted net income attributable to common shareholders per common share excluded certain restricted stock and performance shares as the impacts were anti-dilutive. The following table presents the weighted average anti-dilutive securities for the periods presented:

	Years Ended December 31,
	2018	2017	2016
	(In thousands)
Anti-dilutive restricted stock and performance shares	19	52	669

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Standards

Revenue From Contracts with Customers. Effective January 1, 2018, the Company adopted ASU No. 2014-09, Revenue From Contracts With Customers (Topic 606) (“ASC 606”) using the modified retrospective method and has applied the standard to all existing contracts. ASC 606 supersedes previous revenue recognition requirements in ASC 605 - Revenue Recognition (“ASC 605”) and includes a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration in exchange for those goods or services. As a result of adopting ASC 606, the Company did not have a cumulative-effect adjustment in retained earnings. The comparative information for the years ended December 31, 2017 and 2016 has not been recast and continues to be reported under the accounting standards in effect for that period. Additionally, adoption of ASC 606 did not impact net income attributable to common shareholders.

The tables below summarize the impact of adoption for the year ended December 31,2018:

	Year Ended December 31, 2018
	Under ASC 606		Under ASC 605		Increase		% Increase
	(In thousands)
Revenues
Crude oil		$911,554		$910,975		$579	0.1	%
Natural gas liquids	96,585		91,608		4,977		5.4	%
Natural gas	57,803		55,023		2,780		5.1	%
Total revenues	1,065,942		1,057,606		8,336		0.8	%
Costs and Expenses
Lease operating	161,596		153,260		8,336		5.4	%
Income Before Income Taxes		$409,600		$409,600		$—	—	%

Changes to crude oil, NGL, and natural gas revenues and lease operating expense are due to the conclusion that the Company controls the product throughout processing before transferring to the customer for certain natural gas processing arrangements. Therefore, any transportation, gathering, and processing fees incurred prior to transfer of control are included in lease operating expense.

Business Combinations. In January 2017, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which clarifies the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions (or divestitures) of assets or businesses. Effective January 1, 2018, the Company adopted ASU 2017-01 using the prospective method and applied the clarified definition of a business to subsequent acquisitions and divestitures.

Statement of Cash Flows. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”), which is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. The guidance addresses eight specific cash flow issues for which current GAAP is either unclear or does not include specific guidance. Effective January 1, 2018, the Company adopted ASU 2016-15 using the retrospective approach as prescribed by ASU 2016-15. There were no changes to the statement of cash flows as a result of adoption.

Stock Compensation. In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”), which amends certain aspects of accounting for share-based payment arrangements. ASU 2016-09 revises or provides alternative accounting for the tax impacts of share-based payment arrangements, forfeitures, minimum statutory tax withholdings, and prescribes certain disclosures to be made in the period of adoption.

Effective January, 1, 2017, the Company adopted ASU 2016-09. Using the modified retrospective approach as prescribed by ASU 2016-09, the Company recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets, which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative-effect adjustment to retained earnings of zero. Effective January 1, 2017, all windfall tax benefits and tax shortfalls are recorded as income tax expense or benefit in the consolidated statements of operations, whereas prior to adoption, windfall tax benefits were recorded as an increase to additional paid-in capital. In addition, windfall tax benefits, along with tax shortfalls, are now required to be classified as an operating cash flow as opposed to a financing cash flow. Further, the Company has elected to account for forfeitures of share-based payment awards as they occur, which resulted in an immaterial cumulative-effect adjustment to retained earnings.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

Leases. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which significantly changes accounting for leases by requiring that lessees recognize a right-of-use (“ROU”) asset and a related lease liability representing the obligation to make lease payments, for virtually all lease transactions. ASU 2016-02 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. Additional disclosures about an entity’s lease transactions will also be required. ASU 2016-02 defines a lease as “a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment (an identified asset) for a period of time in exchange for consideration.” ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018 with early adoption permitted. ASU 2016-02 requires companies to recognize and measure leases at the beginning of the earliest period presented in the financial statements using a modified retrospective approach.

The Company will adopt ASU 2016-02 effective January 1, 2019, using the modified retrospective approach. The Company will make certain elections allowing it to not reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for land easements, not to recognize ROU assets or lease liabilities for short-term leases, and will not separate lease components from non-lease components for specified asset classes. The Company has implemented a third party software which will be used to track and account for lease activity. As of December 31, 2018, the Company anticipates that the adoption of ASU 2016-02 will result in the recognition of ROU assets and lease liabilities on its consolidated balance sheets ranging from $75.0 million to $100.0 million primarily associated with office space contracts, drilling rig contracts, and contracts for the use of vehicles, information technology infrastructure and well equipment. However, the Company does not expect ASU 2016-02 to have a significant impact on its consolidated statements of operations or consolidated statements of cash flows. The Company is finalizing its accounting policies, controls, processes, and disclosures that will change as a result of adopting the new standard. As permitted by ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, the Company does not expect to adjust comparative-period financial statements.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Revenue by Major Customers by Reporting Segments

The Company had the following major customers that represented 10% or more of its total revenues for at least one of the periods presented:

	Years Ended December 31,
	2018	2017	2016
Shell Trading (US) Company	73%	69%	56%
Flint Hills Resources, LP	*	*	15%

Schedule of Earnings Per Share, Basic and Diluted

The following table summarizes the calculation of net income (loss) attributable to common shareholders per common share:

	Years Ended December 31,
	2018			2017			2016
	(In thousands, except per share amounts)
Net Income (Loss)		$404,427			$87,110			($675,474	)
Dividends on preferred stock	(18,161		)	(7,781		)	—
Accretion on preferred stock	(3,057		)	(862		)	—
Loss on redemption of preferred stock	(7,133		)	—			—
Net Income (Loss) Attributable to Common Shareholders		$376,076			$78,467			($675,474	)
Basic weighted average common shares outstanding	85,509			73,421			59,932
Dilutive effect of restricted stock and performance shares	949			269			—
Dilutive effect of common stock warrants	685			303			—
Diluted weighted average common shares outstanding	87,143			73,993			59,932
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$4.40			$1.07			($11.27	)
Diluted		$4.32			$1.06			($11.27	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table presents the weighted average anti-dilutive securities for the periods presented:

	Years Ended December 31,
	2018	2017	2016
	(In thousands)
Anti-dilutive restricted stock and performance shares	19	52	669

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The tables below summarize the impact of adoption for the year ended December 31,2018:

	Year Ended December 31, 2018
	Under ASC 606		Under ASC 605		Increase		% Increase
	(In thousands)
Revenues
Crude oil		$911,554		$910,975		$579	0.1	%
Natural gas liquids	96,585		91,608		4,977		5.4	%
Natural gas	57,803		55,023		2,780		5.1	%
Total revenues	1,065,942		1,057,606		8,336		0.8	%
Costs and Expenses
Lease operating	161,596		153,260		8,336		5.4	%
Income Before Income Taxes		$409,600		$409,600		$—	—	%

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Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2018

Devon Acquisition [Member]

Business Acquisition [Line Items]

Schedule of Assets Acquired and Liabilities Assumed

The following presents the preliminary allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.

	Preliminary Purchase Price Allocation
	(In thousands)
Assets
Oil and gas properties
Proved properties		$47,370
Unproved properties	150,253
Total oil and gas properties		$197,623
Total assets acquired		$197,623
Liabilities
Revenues and royalties payable		$855
Asset retirement obligations	170
Total liabilities assumed		$1,025
Net Assets Acquired		$196,598

Business Acquisition, Pro Forma Information

The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the years ended December 31, 2018 and 2017, assuming the Devon Acquisition had been completed as of January 1, 2017, including adjustments to reflect the acquisition date fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the Devon Acquisition.

	Years Ended December 31,
	2018		2017
	(In thousands, except per share amounts)
Total revenues		$1,086,742		$753,474
Net Income Attributable to Common Shareholders		$384,639		$78,118
Net Income Attributable to Common Shareholders Per Common Share
Basic		$4.21		$0.94
Diluted		$4.13		$0.94
Weighted Average Common Shares Outstanding
Basic	91,444		82,921
Diluted	93,077		83,493

ExL Acquisition [Member]

Business Acquisition [Line Items]

Schedule of Assets Acquired and Liabilities Assumed

The following presents the final allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.

	Purchase Price Allocation
	(In thousands)
Assets
Other current assets		$106
Oil and gas properties
Proved properties	294,754
Unproved properties	443,194
Total oil and gas properties		$737,948
Total assets acquired		$738,054
Liabilities
Revenues and royalties payable		$5,785
Asset retirement obligations	153
Contingent ExL Consideration	52,300
Total liabilities assumed		$58,238
Net Assets Acquired		$679,816

Schedule of Revenue and Income Since Acquisition Date

The results of operations for the ExL Acquisition have been included in the Company’s consolidated statements of operations since the August 10, 2017 closing date, including total revenues and net income attributable to common shareholders for the years ended December 31, 2018 and 2017 as shown in the table below:

	Years Ended December 31,
	2018		2017
	(In thousands)
Total revenues		$225,135		$53,548
Net Income Attributable to Common Shareholders		$176,881		$44,304

Business Acquisition, Pro Forma Information

Pro Forma Operating Results (Unaudited). The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the years ended December 31, 2017 and 2016, assuming the ExL Acquisition had been completed as of January 1, 2016, including adjustments to reflect the acquisition date fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the ExL Acquisition.

	Years Ended December 31,
	2017		2016
	(In thousands, except per share amounts)
Total revenues		$781,378		$454,913
Net Income (Loss) Attributable to Common Shareholders		$91,931		($688,180	)
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Basic		$1.25		($9.11	)
Diluted		$1.24		($9.11	)
Weighted Average Common Shares Outstanding
Basic	73,421		75,532
Diluted	73,993		75,532

Sanchez Acquisition [Member]

Business Acquisition [Line Items]

Schedule of Revenue and Income Since Acquisition Date

The results of operations for the Sanchez Acquisition have been included in the Company’s consolidated statements of operations since the December 14, 2016 closing date, including total revenues and net income attributable to common shareholders for the years ended December 31, 2018, 2017, and 2016 as shown in the table below:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
Total revenues		$57,780		$37,780		$1,459
Net Income Attributable to Common Shareholders		$38,551		$16,459		$966

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Property And Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment

As of December 31, 2018 and 2017, total property and equipment, net consisted of the following:

	December 31,
	2018			2017
Oil and gas properties, full cost method	(In thousands)
Proved properties		$6,278,321			$5,615,153
Accumulated DD&A and impairments	(3,944,851		)	(3,649,806		)
Proved properties, net	2,333,470			1,965,347
Unproved properties, not being amortized
Unevaluated leasehold and seismic costs	608,830			612,589
Capitalized interest	65,003			47,698
Total unproved properties, not being amortized	673,833			660,287
Other property and equipment	29,191			25,625
Accumulated depreciation	(17,970		)	(15,449		)
Other property and equipment, net	11,221			10,176
Total property and equipment, net		$3,018,524			$2,635,810

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule Of Components Of Income Tax (Expense) Benefit

The components of income tax expense were as follows:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Current income tax expense
U.S. Federal		$—			$—			$—
State	(792		)	(395		)	—
Total current income tax expense	(792		)	(395		)	—
Deferred income tax expense
U.S. Federal	—			—			—
State	(4,381		)	(3,635		)	—
Total deferred income tax expense	(4,381		)	(3,635		)	—
Income tax expense		($5,173	)		($4,030	)		$—

Schedule Of Effective Income Tax Rate Reconciliation

The Company’s income tax expense differs from the income tax expense computed by applying the U.S. federal statutory corporate income tax rate of 21% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016, to income (loss) before income taxes as follows:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Income (loss) before income taxes		$409,600			$91,140			($675,474	)
Income tax (expense) benefit at the U.S. federal statutory rate	(86,016		)	(31,899		)	236,416
State income tax (expense) benefit, net of U.S. federal income tax benefit	(5,173		)	(4,030		)	3,894
Tax deficiencies related to stock-based compensation	(2,572		)	(3,089		)	—
Provisional impact of Tax Cuts and Jobs Act	—			(211,724		)	—
Change in valuation allowance from provisional impact of Tax Cuts and Jobs Act	—			211,724			—
(Increase) decrease in valuation allowance due to current period activity	90,116			35,376			(240,864		)
Other	(1,528		)	(388		)	554
Income tax expense		($5,173	)		($4,030	)		$—

Schedule Of Deferred Tax Assets And Liabilities

As of December 31, 2018 and 2017, the net deferred income tax liabilities are comprised of the following:

	December 31,
	2018			2017
	(In thousands)
Deferred income tax liabilities
Oil and gas properties		($16,610	)		($3,635	)
Derivative assets	(10,008		)	(2,140		)
Total deferred income tax liabilities	(26,618		)	(5,775		)
Deferred income tax assets
Net operating loss carryforward - U.S. federal and state	235,788			242,915
Oil and gas properties	—			50,177
Asset retirement obligations	3,927			4,996
Derivative liabilities	20,165			35,585
Other	1,634			1,496
Total deferred income tax assets	261,514			335,169
Deferred income tax asset valuation allowance	(242,913		)	(333,029		)
Net deferred income tax assets	18,601			2,140
Net deferred income tax liabilities		($8,017	)		($3,635	)

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Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule Of Debt

Long-term debt consisted of the following as of December 31, 2018 and 2017:

	December 31,
	2018			2017
	(In thousands)
Senior Secured Revolving Credit Facility due 2022		$744,431			$291,300
7.50% Senior Notes due 2020	—			450,000
Unamortized premium for 7.50% Senior Notes	—			579
Unamortized debt issuance costs for 7.50% Senior Notes	—			(4,492		)
6.25% Senior Notes due 2023	650,000			650,000
Unamortized debt issuance costs for 6.25% Senior Notes	(6,878		)	(8,208		)
8.25% Senior Notes due 2025	250,000			250,000
Unamortized debt issuance costs for 8.25% Senior Notes	(3,962		)	(4,395		)
Other long-term debt due 2028	—			4,425
Long-term debt		$1,633,591			$1,629,209

Interest and Commitment Fee Rates

Borrowings outstanding under the credit agreement bear interest at the Company’s option at either (i) a base rate for a base rate loan plus the margin set forth in the table below, where the base rate is defined as the greatest of the prime rate, the federal funds rate plus 0.50% and the adjusted LIBO rate plus 1.00%, or (ii) an adjusted LIBO rate for a Eurodollar loan plus the margin set forth in the table below. The Company also incurs commitment fees at rates as set forth in the table below on the unused portion of lender commitments, which are included in “Interest expense, net” in the consolidated statements of operations.

Ratio of Outstanding Borrowings to Lender Commitments	Applicable Margin for Base Rate Loans	Applicable Margin for Eurodollar Loans	Commitment Fee
Less than 25%	0.25%	1.25%	0.375%
Greater than or equal to 25% but less than 50%	0.50%	1.50%	0.375%
Greater than or equal to 50% but less than 75%	0.75%	1.75%	0.500%
Greater than or equal to 75% but less than 90%	1.00%	2.00%	0.500%
Greater than or equal to 90%	1.25%	2.25%	0.500%

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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation Disclosure [Abstract]

Roll Forward Of Asset Retirement Obligations

The following table sets forth a reconciliation of the Company’s asset retirement obligations for the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018			2017
	(In thousands)
Asset retirement obligations, beginning of period		$23,792			$21,240
Liabilities incurred	1,676			3,920
Increase due to acquisition of oil and gas properties	170			153
Liabilities settled	—			(343		)
Reduction due to divestitures of oil and gas properties	(8,547		)	(2,671		)
Accretion expense	1,366			1,799
Revisions to estimated cash flows	245			(306		)
Asset retirement obligations, end of period	18,702			23,792
Current asset retirement obligations (included in other current liabilities)	(342		)	(295		)
Non-current asset retirement obligations		$18,360			$23,497

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Total Minimum Commitments From Long-Term Non-Cancelable Operating Leases, Drilling Rig, Seismic And Pipeline Volume Commitments

The table below presents total minimum commitments associated with long-term, non-cancelable leases, drilling rig contracts and gathering, processing and transportation service agreements, which require minimum volumes of natural gas or produced water to be delivered, as of December 31, 2018.

	2019		2020		2021		2022		2023		2024 and Thereafter		Total
	(In thousands)
Operating leases		$10,024		$9,154		$6,249		$3,639		$3,680		$20,978		$53,724
Drilling rig contracts (1)	37,077		16,867		813		—		—		—		54,757
Delivery commitments (2)	3,726		2,807		2,487		30		7		19		9,076
Produced water disposal commitments (3)	18,139		20,894		20,898		20,954		10,471		9,769		101,125
Other	1,800		1,050		—		—		—		—		2,850
Total		$70,766		$50,772		$30,447		$24,623		$14,158		$30,766		$221,532

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Preferred Stock (Tables)

12 Months Ended

Dec. 31, 2018

Preferred Stock [Abstract]

Warrants, Valuation Assumptions

The fair value of the Warrants was calculated using a Black-Scholes-Merton option pricing model, incorporating the following assumptions at the issuance date:

	Issuance Date Fair Value Assumptions
Exercise price	$16.08
Expected term (in years)	10.0
Expected volatility	62.9	%
Risk-free interest rate	2.2	%
Dividend yield	—	%

Preferred Stock

The following table sets forth a reconciliation of changes in the carrying amount of Preferred Stock for the years ended December 31, 2018 and 2017:

	Years Ended December 31,
	2018			2017
	(In thousands)
Preferred Stock, beginning of period		$214,262			$—
Relative fair value at issuance	—			213,400
Redemption of Preferred Stock	(42,897		)	—
Accretion on Preferred Stock	3,057			862
Preferred Stock, end of period		$174,422			$214,262

Schedule of Preferred Stock Dividends Paid in Common Stock

The Company may elect to pay all or a portion of the Preferred Stock dividends in shares of its common stock in decreasing percentages as follows with respect to any preferred stock dividend declared by the Company’s Board of Directors and paid in respect of a quarter ending:

Period	Percentage
On or after December 15, 2018 and on or prior to September 15, 2019	75	%
On or after December 15, 2019 and on or prior to September 15, 2020	50	%

Schedule of Preferred Stock Redemption Premiums

After August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at redemption premiums, as presented in the table below, plus accrued but unpaid dividends.

Period	Percentage
After August 10, 2020 but on or prior to August 10, 2021	104.4375	%
After August 10, 2021 but on or prior to August 10, 2022	102.21875	%
After August 10, 2022	100	%

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Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Shareholders' Equity And Stock Incentive Plan [Abstract]

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

The table below summarizes restricted stock award and unit activity for the years ended December 31, 2018, 2017 and 2016:

	Restricted Stock Awards and Units		Weighted Average Grant Date Fair Value
For the Year Ended December 31, 2016
Unvested restricted stock awards and units, beginning of period	1,041,997			$44.22
Granted	887,254			$27.80
Vested	(811,136	)		$36.32
Forfeited	(6,405	)		$34.46
Unvested restricted stock awards and units, end of period	1,111,710			$36.93
For the Year Ended December 31, 2017
Unvested restricted stock awards and units, beginning of period	1,111,710			$36.93
Granted	1,020,465			$25.63
Vested	(635,965	)		$39.62
Forfeited	(13,555	)		$29.11
Unvested restricted stock awards and units, end of period	1,482,655			$28.07
For the Year Ended December 31, 2018
Unvested restricted stock awards and units, beginning of period	1,482,655			$28.07
Granted	1,458,421			$15.49
Vested	(621,399	)		$31.48
Forfeited	(53,010	)		$17.72
Unvested restricted stock awards and units, end of period	2,266,667			$19.28

Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity

The table below summarizes the Cash SAR activity for the years ended December 31, 2018, 2017 and 2016:

	Stock Appreciation Rights		Weighted Average Exercise Prices		Weighted Average Remaining Life (In years)	Aggregate Intrinsic Value (In millions)		Aggregate Intrinsic Value of Exercises (In millions)
For the Year Ended December 31, 2016
Outstanding, beginning of period	700,453			$21.86
Granted	376,260			$27.30
Exercised	(354,075	)		$23.89					$5.2
Forfeited	—		—
Expired	—		—
Outstanding, end of period	722,638			$23.69
Vested, end of period	350,840			$19.87
Vested and exercisable, end of period	350,840			$19.87
For the Year Ended December 31, 2017
Outstanding, beginning of period	722,638			$23.69
Granted	342,440			$26.94
Exercised	(219,279	)		$17.28					$2.1
Forfeited	—		—
Expired	(131,561	)		$24.19
Outstanding, end of period	714,238			$27.12
Vested, end of period	185,899			$27.30
Vested and exercisable, end of period	—			$27.30
For the Year Ended December 31, 2018
Outstanding, beginning of period	714,238			$27.12
Granted	616,686			$14.67
Exercised	—		—						$—
Forfeited	—		—
Expired	—		—
Outstanding, end of period	1,330,924			$21.35	4.3		$—
Vested, end of period	543,018			$27.18
Vested and exercisable, end of period	—			$27.18	2.5		$—

Schedule of Share-based Payment Award, Non-Options, Valuation Assumptions

The following table summarizes the assumptions used and the resulting grant date fair value per Cash SAR granted during the years ended December 31, 2018, 2017, and 2016:

	Years Ended December 31,
	2018		2017		2016
Expected term (in years)	6.0		4.2		3.9
Expected volatility	54.3	%	54.3	%	45.1	%
Risk-free interest rate	2.8	%	1.8	%	1.3	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per Cash SAR	$7.89		$12.00		$9.88

Schedule of Share-based Compensation, Performance Shares Award Activity

The table below summarizes performance share activity for the years ended December 31, 2018, 2017 and 2016:

	Target Performance Shares (1)		Weighted Average Grant Date Fair Value
For the Year Ended December 31, 2016
Unvested performance shares, beginning of period	112,859			$66.83
Granted	41,651			$35.71
Vested at end of performance period	—		—
Forfeited	—		—
Unvested performance shares, end of period	154,510			$58.44
For the Year Ended December 31, 2017
Unvested performance shares, beginning of period	154,510			$58.44
Granted	46,787			$35.14
Vested at end of performance period	(56,342	)		$68.15
Forfeited	—		—
Unvested performance shares, end of period	144,955			$47.14
For the Year Ended December 31, 2018
Unvested performance shares, beginning of period	144,955			$47.14
Granted	93,771			$19.09
Vested at end of performance period	(49,458	)		$65.51
Did not vest at end of performance period	(7,059	)		$65.51
Forfeited	—		—
Unvested performance shares, end of period	182,209			$27.01

(1) The number of performance shares that vest may vary from the number of target performance shares granted depending on the Company’s final TSR ranking for the approximate three-year performance period.

Schedule of Share-based Payment Award, Performance Share Award, Valuation Assumptions

The following table summarizes the assumptions used and the resulting grant date fair value per performance share granted during the years ended December 31, 2018, 2017 and 2016:

	Years Ended December 31,
	2018		2017		2016
Number of simulations	500,000		500,000		500,000
Expected term (in years)	3.0		3.0		3.0
Expected volatility	61.5	%	59.2	%	55.3	%
Risk-free interest rate	2.4	%	1.5	%	1.2	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per performance share	$19.09		$35.14		$35.71

Schedule of Compensation Cost, Allocation of Share-based Compensation Costs by Plan

The following table sets forth the components of stock-based compensation expense, net:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Restricted stock awards and units		$18,434			$21,372			$28,196
Cash SARs	(2,571		)	(5,023		)	9,675
Performance shares	1,785			2,442			2,806
	17,648			18,791			40,677
Less: amounts capitalized to oil and gas properties	(4,124		)	(4,482		)	(4,591		)
Total stock-based compensation expense, net		$13,524			$14,309			$36,086

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Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Derivative [Line Items]

Schedule of Contingent Consideration

The purchase and sale agreements of the ExL Acquisition and divestitures of the Company’s assets in the Niobrara, Marcellus and Utica, included contingent consideration arrangements that require the Company to pay or entitle the Company to receive specified amounts if commodity prices exceed specified thresholds, which are summarized in the table below. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further discussion.

Contingent Consideration Arrangements	Years	Threshold (1)		Contingent Receipt (Payment) - Annual			Contingent Receipt (Payment) - Aggregate Limit
				(In thousands)
Contingent ExL Consideration	2018		$50.00		($50,000	)
	2019	50.00		(50,000		)
	2020	50.00		(50,000		)
	2021	50.00		(50,000		)		($125,000	)
Contingent Niobrara Consideration	2018		$55.00		$5,000
	2019	55.00		5,000
	2020	60.00		5,000			—
Contingent Marcellus Consideration	2018		$3.13		$3,000
	2019	3.18		3,000
	2020	3.30		3,000				$7,500
Contingent Utica Consideration	2018		$50.00		$5,000
	2019	53.00		5,000
	2020	56.00		5,000			—

(1) The price used to determine whether the specified threshold for each year has been met for the Contingent ExL Consideration, Contingent Niobrara Consideration and Contingent Utica Consideration is the average daily closing spot price per barrel of WTI crude oil as measured by the U.S. Energy Information Administration. The price used to determine whether the specified threshold for each year has been met for the Contingent Marcellus Consideration is the average monthly settlement price per MMBtu of Henry Hub natural gas for the next calendar month, as determined on the last business day preceding each calendar month as measured by the CME Group Inc.

Schedule of Derivative Instrument Fair Value Assets and Liabilities

The derivative instrument asset and liability fair values recorded in the consolidated balance sheets as of December 31, 2018 and December 31, 2017 are summarized below:

	December 31, 2018
	Gross Amounts Recognized			Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts Presented in the Consolidated Balance Sheets
	(In thousands)
Commodity derivative instruments		$50,406			($20,502	)		$29,904
Contingent Niobrara Consideration	5,000			—			5,000
Contingent Utica Consideration	5,000			—			5,000
Derivative assets		$60,406			($20,502	)		$39,904
Commodity derivative instruments	6,083			(4,236		)	1,847
Contingent Niobrara Consideration	2,035			—			2,035
Contingent Marcellus Consideration	1,369			—			1,369
Contingent Utica Consideration	2,501			—			2,501
Other long-term assets		$11,988			($4,236	)		$7,752
Commodity derivative instruments		($15,345	)		$10,140			($5,205	)
Deferred premium obligations	(10,362		)	10,362			—
Contingent ExL Consideration	(50,000		)	—			(50,000		)
Derivative liabilities-current		($75,707	)		$20,502			($55,205	)
Commodity derivative instruments	(10,751		)	518			(10,233		)
Deferred premium obligations	(3,718		)	3,718			—
Contingent ExL Consideration	(30,584		)	—			(30,584		)
Derivative liabilities-non current		($45,053	)		$4,236			($40,817	)

	December 31, 2017
	Gross Amounts Recognized			Gross Amounts Offset in the Consolidated Balance Sheets			Net Amounts Presented in the Consolidated Balance Sheets
	(In thousands)
Commodity derivative instruments		$4,869			($4,869	)		$—
Derivative assets		$4,869			($4,869	)		$—
Commodity derivative instruments	9,505			(9,505		)	—
Contingent Marcellus Consideration	2,205			—			2,205
Contingent Utica Consideration	7,985			—			7,985
Other long-term assets		$19,695			($9,505	)		$10,190
Commodity derivative instruments		($52,671	)		($4,450	)		($57,121	)
Deferred premium obligations	(9,319		)	9,319			—
Derivative liabilities-current		($61,990	)		$4,869			($57,121	)
Commodity derivative instruments	(24,609		)	(2,098		)	(26,707		)
Deferred premium obligations	(11,603		)	11,603			—
Contingent ExL Consideration	(85,625		)	—			(85,625		)
Derivative liabilities-non current		($121,837	)		$9,505			($112,332	)

Derivative Instruments, (Gain) Loss

The components of “(Gain) loss on derivatives, net” in the consolidated statements of operations for the years ended December 31, 2018, 2017, and 2016 are summarized below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
(Gain) Loss on Derivatives, Net
Crude oil		($9,726	)		$22,839			$23,609
NGL	4,439			1,322			—
Natural gas	(421		)	(15,399		)	19,584
Deferred premium obligations	1,875			18,401			5,880
Contingent ExL Consideration	(5,041		)	33,325			—
Contingent Niobrara Consideration	845			—			—
Contingent Marcellus Consideration	836			455			—
Contingent Utica Consideration	484			(1,840		)	—
(Gain) Loss on Derivatives, Net		($6,709	)		$59,103			$49,073

Schedule of Cash Received for Derivatives

The components of “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows for the years ended December 31, 2018, 2017, and 2016 are summarized below:

	Years Ended December 31,
	2018			2017			2016
Cash Flows from Operating Activities	(In thousands)
Cash Received (Paid) for Derivative Settlements, Net
Crude oil		($78,570	)		$9,883			$125,098
NGL	(6,378		)	—			—
Natural gas	(1,710		)	(54		)	—
Deferred premium obligations	(9,649		)	(2,056		)	(5,729		)
Cash Received (Paid) for Derivative Settlements, Net		($96,307	)		$7,773			$119,369

Crude Oil [Member]

Derivative [Line Items]

Schedule of Derivative Positions

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)		Fixed Price Differential ($ per Bbl)
Crude oil	1Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	1Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	1Q19	Basis Swaps	WTI Midland-WTI Cushing	5,500	—		—		—			($5.24	)
Crude oil	1Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	2Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	2Q19	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			($5.38	)
Crude oil	2Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	3Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	3Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	3Q19	Basis Swaps	WTI Midland-WTI Cushing	7,000	—		—		—			($5.56	)
Crude oil	3Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	4Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	4Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	4Q19	Basis Swaps	WTI Midland-WTI Cushing	11,000	—		—		—			($3.84	)
Crude oil	4Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2020	Basis Swaps	WTI Midland-WTI Cushing	13,000	—		—		—			($1.27	)
Crude oil	2020	Sold Call Options	NYMEX WTI	4,575	—		—			$75.98	—
Crude oil	2021	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			$0.03

Subsequent to December 31, 2018, the Company entered into the following commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Fixed Price ($ per Bbl)		Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)
Crude oil	2020	Price Swaps	NYMEX WTI	3,000		$55.06	—		—		—
Crude oil	2020	Three-Way Collars	NYMEX WTI	6,000	—			$45.00		$55.00		$64.69

Natural Gas [Member]

Derivative [Line Items]

Schedule of Derivative Positions

Commodity	Period	Type of Contract	Index	Volumes (MMBtu per day)	Sub-Floor Price ($ per MMBtu)	Floor Price ($ per MMBtu)	Ceiling Price ($ per MMBtu)		Fixed Price  Differential ($ per MMBtu)
Natural gas	1Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	2Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	3Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	4Q19	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.25	—
Natural gas	2020	Sold Call options	NYMEX Henry Hub	33,000	—	—		$3.50	—

XML

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

The following tables summarize the Company’s derivative instrument assets and liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017:

	December 31, 2018
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$31,751			$—
Contingent Niobrara Consideration	—		7,035			—
Contingent Marcellus Consideration	—		1,369			—
Contingent Utica Consideration	—		7,501			—
Liabilities
Commodity derivative instruments		$—		($15,438	)		$—
Contingent ExL Consideration	—		(80,584		)	—

	December 31, 2017
	Level 1		Level 2			Level 3
	(In thousands)
Assets
Commodity derivative instruments		$—		$—			$—
Contingent Niobrara Consideration	—		—			—
Contingent Marcellus Consideration	—		—			2,205
Contingent Utica Consideration	—		—			7,985
Liabilities
Commodity derivative instruments		$—		($83,828	)		$—
Contingent ExL Consideration	—		—			(85,625		)

Fair Value, Unobservable Input Reconciliation

The following tables present the reconciliation of changes in the fair values of the contingent consideration arrangements, which were designated within the valuation hierarchy as Level 2 for the year ended December 31, 2018 and Level 3 for the year ended December 31, 2017:

	Contingent Consideration Arrangements
	Assets			Liability
	(In thousands)
Balance as of January 1, 2017		$—			$—
Recognition of (acquisition) divestiture date fair value	8,805			(52,300		)
Gain (loss) on change in fair value, net(1)	1,385			(33,325		)
Transfers into (out of) Level 3	—			—
Balance as of December 31, 2017		$10,190			($85,625	)
Recognition of divestiture date fair value	7,880			—
Gain (loss) on changes in fair value, net(1)	(2,165		)	5,041
Transfers out of Level 3	(15,905		)	80,584
Balance as of December 31, 2018		$—			$—

(1) Recognized as “(Gain) loss on derivatives, net” in the consolidated statements of operations.

Schedule of Fair Value of Debt Instruments

The following table presents the principal amounts of the Company’s senior notes and other long-term debt with the fair values measured using quoted secondary market trading prices which are designated as Level 1 within the valuation hierarchy. See “Note 6. Long-Term Debt” for additional discussion.

	December 31, 2018				December 31, 2017
	Principal Amount		Fair Value		Principal Amount		Fair Value
	(In thousands)
7.50% Senior Notes due 2020		$—		$—		$450,000		$459,518
6.25% Senior Notes due 2023	650,000		599,625		650,000		674,375
8.25% Senior Notes due 2025	250,000		244,375		250,000		274,375
Other long-term debt due 2028	—		—		4,425		4,445

XML

Condensed Consolidating Financial Information (Tables)

12 Months Ended

Dec. 31, 2018

Condensed Consolidating Financial Information [Abstract]

Condensed Consolidating Financial Information

14. Condensed Consolidating Financial Information

The rules of the SEC require that condensed consolidating financial information be provided for a subsidiary that has guaranteed the debt of a registrant issued in a public offering, where the guarantee is full, unconditional and joint and several and where the voting interest of the subsidiary is 100% owned by the registrant. The Company is, therefore, presenting condensed consolidating financial information on a parent company, combined guarantor subsidiaries, combined non-guarantor subsidiaries and consolidated basis and should be read in conjunction with the consolidated financial statements. The financial information may not necessarily be indicative of results of operations, cash flows, or financial position had such guarantor subsidiaries operated as independent entities.

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

(In thousands)

	December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,341,680			$114,005			$—		($3,305,316	)		$150,369
Total property and equipment, net	7,951			3,011,387			3,028		(3,842		)	3,018,524
Investment in subsidiaries	(419,159		)	—			—		419,159			—
Other long-term assets	28,124			5,906			—		(17,823		)	16,207
Total Assets		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100
Liabilities and Shareholders’ Equity
Current liabilities		$135,980			$3,491,337			$3,028		($3,308,336	)		$322,009
Long-term liabilities	1,650,589			59,120			—		(1,944		)	1,707,765
Preferred stock	174,422			—			—		—			174,422
Total shareholders’ equity	997,605			(419,159		)	—		402,458			980,904
Total Liabilities and Shareholders’ Equity		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100

	December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,441,633			$105,533			$—		($3,424,288	)		$122,878
Total property and equipment, net	5,953			2,630,707			3,028		(3,878		)	2,635,810
Investment in subsidiaries	(999,793		)	—			—		999,793			—
Other long-term assets	9,270			10,346			—		—			19,616
Total Assets		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304
Liabilities and Shareholders’ Equity
Current liabilities		$165,701			$3,631,401			$3,028		($3,427,308	)		$372,822
Long-term liabilities	1,689,466			114,978			—		15,879			1,820,323
Preferred stock	214,262			—			—		—			214,262
Total shareholders’ equity	387,634			(999,793		)	—		983,056			370,897
Total Liabilities and Shareholders’ Equity		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$162			$1,065,780			$—		$—			$1,065,942
Total costs and expenses	176,406			479,973			—		(37		)	656,342
Income (loss) before income taxes	(176,244		)	585,807			—		37			409,600
Income tax expense	—			(5,173		)	—		—			(5,173		)
Equity in income of subsidiaries	580,634			—			—		(580,634		)	—
Net income		$404,390			$580,634			$—		($580,597	)		$404,427
Dividends on preferred stock	(18,161		)	—			—		—			(18,161		)
Accretion on preferred stock	(3,057		)	—			—		—			(3,057		)
Loss on redemption of preferred stock	(7,133		)	—			—		—			(7,133		)
Net income attributable to common shareholders		$376,039			$580,634			$—		($580,597	)		$376,076

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$302			$745,586			$—		$—			$745,888
Total costs and expenses	195,728			459,057			—		(37		)	654,748
Income (loss) before income taxes	(195,426		)	286,529			—		37			91,140
Income tax expense	—			(4,030		)	—		—			(4,030		)
Equity in income of subsidiaries	282,499			—			—		(282,499		)	—
Net income		$87,073			$282,499			$—		($282,462	)		$87,110
Dividends on preferred stock	(7,781		)	—			—		—			(7,781		)
Accretion on preferred stock	(862		)	—			—		—			(862		)
Loss on redemption of preferred stock	—			—			—		—			—
Net income attributable to common shareholders		$78,430			$282,499			$—		($282,462	)		$78,467

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$482			$443,112			$—		$—			$443,594
Total costs and expenses	208,054			910,522			—		492			1,119,068
Loss before income taxes	(207,572		)	(467,410		)	—		(492		)	(675,474		)
Income tax expense	—			—			—		—			—
Equity in loss of subsidiaries	(467,410		)	—			—		467,410			—
Net loss		($674,982	)		($467,410	)		$—		$466,918			($675,474	)
Dividends on preferred stock	—			—			—		—			—
Accretion on preferred stock	—			—			—		—			—
Loss on redemption of preferred stock	—			—			—		—			—
Net loss attributable to common shareholders		($674,982	)		($467,410	)		$—		$466,918			($675,474	)

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($269,318	)		$922,873			$—		$—			$653,555
Net cash provided by (used in) investing activities	126,905			(792,383		)	—		(130,490		)	(795,968		)
Net cash provided by (used in) financing activities	135,155			(130,490		)	—		130,490			135,155
Net decrease in cash and cash equivalents	(7,258		)	—			—		—			(7,258		)
Cash and cash equivalents, beginning of year	9,540			—			—		—			9,540
Cash and cash equivalents, end of year		$2,282			$—			$—		$—			$2,282

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($121,107	)		$544,088			$—		$—			$422,981
Net cash used in investing activities	(615,364		)	(1,155,340		)	—		611,252			(1,159,452		)
Net cash provided by financing activities	741,817			611,252			—		(611,252		)	741,817
Net increase in cash and cash equivalents	5,346			—			—		—			5,346
Cash and cash equivalents, beginning of year	4,194			—			—		—			4,194
Cash and cash equivalents, end of year		$9,540			$—			$—		$—			$9,540

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by (used in) operating activities		($34,773	)		$307,541			$—			$—			$272,768
Net cash used in investing activities	(312,291		)	(575,824		)	(740		)	269,023			(619,832		)
Net cash provided by financing activities	308,340			268,283			740			(269,023		)	308,340
Net decrease in cash and cash equivalents	(38,724		)	—			—			—			(38,724		)
Cash and cash equivalents, beginning of year	42,918			—			—			—			42,918
Cash and cash equivalents, end of year		$4,194			$—			$—			$—			$4,194

Schedule Of Condensed Consolidating Balance Sheets

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING BALANCE SHEETS

(In thousands)

	December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,341,680			$114,005			$—		($3,305,316	)		$150,369
Total property and equipment, net	7,951			3,011,387			3,028		(3,842		)	3,018,524
Investment in subsidiaries	(419,159		)	—			—		419,159			—
Other long-term assets	28,124			5,906			—		(17,823		)	16,207
Total Assets		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100
Liabilities and Shareholders’ Equity
Current liabilities		$135,980			$3,491,337			$3,028		($3,308,336	)		$322,009
Long-term liabilities	1,650,589			59,120			—		(1,944		)	1,707,765
Preferred stock	174,422			—			—		—			174,422
Total shareholders’ equity	997,605			(419,159		)	—		402,458			980,904
Total Liabilities and Shareholders’ Equity		$2,958,596			$3,131,298			$3,028		($2,907,822	)		$3,185,100

	December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Assets
Total current assets		$3,441,633			$105,533			$—		($3,424,288	)		$122,878
Total property and equipment, net	5,953			2,630,707			3,028		(3,878		)	2,635,810
Investment in subsidiaries	(999,793		)	—			—		999,793			—
Other long-term assets	9,270			10,346			—		—			19,616
Total Assets		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304
Liabilities and Shareholders’ Equity
Current liabilities		$165,701			$3,631,401			$3,028		($3,427,308	)		$372,822
Long-term liabilities	1,689,466			114,978			—		15,879			1,820,323
Preferred stock	214,262			—			—		—			214,262
Total shareholders’ equity	387,634			(999,793		)	—		983,056			370,897
Total Liabilities and Shareholders’ Equity		$2,457,063			$2,746,586			$3,028		($2,428,373	)		$2,778,304

Schedule Of Condensed Consolidating Statements Of Operations

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$162			$1,065,780			$—		$—			$1,065,942
Total costs and expenses	176,406			479,973			—		(37		)	656,342
Income (loss) before income taxes	(176,244		)	585,807			—		37			409,600
Income tax expense	—			(5,173		)	—		—			(5,173		)
Equity in income of subsidiaries	580,634			—			—		(580,634		)	—
Net income		$404,390			$580,634			$—		($580,597	)		$404,427
Dividends on preferred stock	(18,161		)	—			—		—			(18,161		)
Accretion on preferred stock	(3,057		)	—			—		—			(3,057		)
Loss on redemption of preferred stock	(7,133		)	—			—		—			(7,133		)
Net income attributable to common shareholders		$376,039			$580,634			$—		($580,597	)		$376,076

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$302			$745,586			$—		$—			$745,888
Total costs and expenses	195,728			459,057			—		(37		)	654,748
Income (loss) before income taxes	(195,426		)	286,529			—		37			91,140
Income tax expense	—			(4,030		)	—		—			(4,030		)
Equity in income of subsidiaries	282,499			—			—		(282,499		)	—
Net income		$87,073			$282,499			$—		($282,462	)		$87,110
Dividends on preferred stock	(7,781		)	—			—		—			(7,781		)
Accretion on preferred stock	(862		)	—			—		—			(862		)
Loss on redemption of preferred stock	—			—			—		—			—
Net income attributable to common shareholders		$78,430			$282,499			$—		($282,462	)		$78,467

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Total revenues		$482			$443,112			$—		$—			$443,594
Total costs and expenses	208,054			910,522			—		492			1,119,068
Loss before income taxes	(207,572		)	(467,410		)	—		(492		)	(675,474		)
Income tax expense	—			—			—		—			—
Equity in loss of subsidiaries	(467,410		)	—			—		467,410			—
Net loss		($674,982	)		($467,410	)		$—		$466,918			($675,474	)
Dividends on preferred stock	—			—			—		—			—
Accretion on preferred stock	—			—			—		—			—
Loss on redemption of preferred stock	—			—			—		—			—
Net loss attributable to common shareholders		($674,982	)		($467,410	)		$—		$466,918			($675,474	)

Schedule Of Condensed Consolidating Statements Of Cash Flows

CARRIZO OIL & GAS, INC.

CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31, 2018
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($269,318	)		$922,873			$—		$—			$653,555
Net cash provided by (used in) investing activities	126,905			(792,383		)	—		(130,490		)	(795,968		)
Net cash provided by (used in) financing activities	135,155			(130,490		)	—		130,490			135,155
Net decrease in cash and cash equivalents	(7,258		)	—			—		—			(7,258		)
Cash and cash equivalents, beginning of year	9,540			—			—		—			9,540
Cash and cash equivalents, end of year		$2,282			$—			$—		$—			$2,282

	Year Ended December 31, 2017
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries		Eliminations			Consolidated
Net cash provided by (used in) operating activities		($121,107	)		$544,088			$—		$—			$422,981
Net cash used in investing activities	(615,364		)	(1,155,340		)	—		611,252			(1,159,452		)
Net cash provided by financing activities	741,817			611,252			—		(611,252		)	741,817
Net increase in cash and cash equivalents	5,346			—			—		—			5,346
Cash and cash equivalents, beginning of year	4,194			—			—		—			4,194
Cash and cash equivalents, end of year		$9,540			$—			$—		$—			$9,540

	Year Ended December 31, 2016
	Parent Company			Combined Guarantor Subsidiaries			Combined Non- Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by (used in) operating activities		($34,773	)		$307,541			$—			$—			$272,768
Net cash used in investing activities	(312,291		)	(575,824		)	(740		)	269,023			(619,832		)
Net cash provided by financing activities	308,340			268,283			740			(269,023		)	308,340
Net decrease in cash and cash equivalents	(38,724		)	—			—			—			(38,724		)
Cash and cash equivalents, beginning of year	42,918			—			—			—			42,918
Cash and cash equivalents, end of year		$4,194			$—			$—			$—			$4,194

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Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

Supplemental cash flow disclosures and non-cash investing and financing activities are presented below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Operating activities:
Cash paid for interest, net of amounts capitalized		$59,846			$77,213			$75,231
Cash paid for income taxes	—			—			—
Investing activities:
Increase (decrease) in capital expenditure payables and accruals		($53,722	)		$102,272			($21,492	)
Supplemental non-cash investing activities:
Fair value of contingent consideration assets on date of divestiture	(7,880		)	(8,805		)	—
Fair value of contingent consideration liabilities on date of acquisition	—			52,300			—
Liabilities assumed in connection with the Sanchez Acquisition	—			—			4,880
Stock-based compensation expense capitalized to oil and gas properties	4,124			4,482			4,591
Asset retirement obligations capitalized to oil and gas properties	2,132			3,726			1,927
Supplemental non-cash financing activities:
Non-cash loss on extinguishment of debt, net	3,586			1,357			—

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Subsequent Events (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2018

Crude Oil [Member]

Derivative [Line Items]

Schedule of Derivative Positions

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)		Fixed Price Differential ($ per Bbl)
Crude oil	1Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	1Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	1Q19	Basis Swaps	WTI Midland-WTI Cushing	5,500	—		—		—			($5.24	)
Crude oil	1Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	2Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	2Q19	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			($5.38	)
Crude oil	2Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	3Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	3Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	3Q19	Basis Swaps	WTI Midland-WTI Cushing	7,000	—		—		—			($5.56	)
Crude oil	3Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	4Q19	Three-Way Collars	NYMEX WTI	27,000		$41.67		$50.96		$74.23	—
Crude oil	4Q19	Basis Swaps	LLS-WTI Cushing	6,000	—		—		—			$5.16
Crude oil	4Q19	Basis Swaps	WTI Midland-WTI Cushing	11,000	—		—		—			($3.84	)
Crude oil	4Q19	Sold Call Options	NYMEX WTI	3,875	—		—			$81.07	—
Crude oil	2020	Basis Swaps	WTI Midland-WTI Cushing	13,000	—		—		—			($1.27	)
Crude oil	2020	Sold Call Options	NYMEX WTI	4,575	—		—			$75.98	—
Crude oil	2021	Basis Swaps	WTI Midland-WTI Cushing	6,000	—		—		—			$0.03

Subsequent to December 31, 2018, the Company entered into the following commodity derivative instruments at weighted average contract volumes and prices:

Commodity	Period	Type of Contract	Index	Volumes (Bbls per day)	Fixed Price ($ per Bbl)		Sub-Floor Price ($ per Bbl)		Floor Price ($ per Bbl)		Ceiling Price ($ per Bbl)
Crude oil	2020	Price Swaps	NYMEX WTI	3,000		$55.06	—		—		—
Crude oil	2020	Three-Way Collars	NYMEX WTI	6,000	—			$45.00		$55.00		$64.69

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Supplemental Disclosures About Oil And Gas Producing Activities (Tables)

12 Months Ended

Dec. 31, 2018

Oil and Gas Exploration and Production Industries Disclosures [Abstract]

Schedule of Costs Incurred in Oil And Gas Property Acquisition, Exploration and Development

Costs incurred in oil and gas property acquisition, exploration and development activities are summarized below:

	Years Ended December 31,
	2018		2017		2016
	(In thousands)
Property acquisition costs
Proved properties		$47,370		$303,307		$90,661
Unproved properties	182,220		525,061		113,535
Total property acquisition costs	229,590		828,368		204,196
Exploration costs	48,570		91,098		37,508
Development costs	809,637		569,982		374,134
Total costs incurred		$1,087,797		$1,489,448		$615,838

Schedule of Proved Oil And Gas Reserves and Changes in Proved Reserves

The Company’s proved reserves and changes in proved reserves are as follows:

	Crude Oil (MBbls)		NGLs (MBbls)		Natural Gas (MMcf)		Total Proved Reserves (MBoe)
Proved reserves:
January 1, 2016	109,588		20,221		244,938		170,632
Extensions and discoveries	40,074		8,612		59,318		58,572
Revisions of previous estimates	(16,731	)	(3,230	)	1,481		(19,713	)
Purchases of reserves in place	4,810		122		7,282		6,145
Production	(9,423	)	(1,788	)	(25,574	)	(15,473	)
December 31, 2016	128,318		23,937		287,445		200,163
Extensions and discoveries	50,476		13,781		98,980		80,754
Revisions of previous estimates	(19,838	)	(909	)	27,774		(16,118	)
Purchases of reserves in place	21,634		8,642		94,962		46,103
Sales of reserves in place	(650	)	(526	)	(170,219	)	(29,546	)
Production	(12,566	)	(2,327	)	(28,472	)	(19,639	)
December 31, 2017	167,374		42,598		310,470		261,717
Extensions and discoveries	65,352		30,195		212,758		131,007
Revisions of previous estimates	(31,287	)	1,936		(6,006	)	(30,352	)
Purchases of reserves in place	2,205		967		7,953		4,498
Sales of reserves in place	(9,676	)	(2,872	)	(17,475	)	(15,461	)
Production	(14,232	)	(3,701	)	(24,639	)	(22,040	)
December 31, 2018	179,736		69,123		483,061		329,369
Proved developed reserves:
December 31, 2015	42,311		7,933		154,725		76,032
December 31, 2016	51,062		9,387		187,054		91,625
December 31, 2017	69,632		17,447		131,355		108,972
December 31, 2018	75,267		25,809		178,941		130,899
Proved undeveloped reserves:
December 31, 2015	67,277		12,288		90,213		94,600
December 31, 2016	77,256		14,550		100,391		108,538
December 31, 2017	97,742		25,151		179,115		152,745
December 31, 2018	104,469		43,314		304,120		198,470

Schedule of Reserves Estimates Average Prices

Proved reserve estimates and future cash flows are based on the average realized prices for sales of crude oil, NGLs and natural gas on the first calendar day of each month during the year. The following average realized prices were used in the calculation of proved reserves and the standardized measure of discounted future net cash flows.

	Years Ended December 31,
	2018		2017		2016
Crude oil ($/Bbl)		$63.80		$49.87		$39.60
NGLs ($/Bbl)		$26.15		$19.78		$11.66
Natural gas ($/Mcf)		$2.46		$2.96		$1.89

Schedule of Standardized Measure of Discounted Future Net Cash Flows

The standardized measure of discounted future net cash flows relating to proved reserves is as follows:

	December 31,
	2018			2017			2016
	(In thousands)
Future cash inflows		$14,461,143			$10,109,752			$5,903,629
Future production costs	(4,572,397		)	(3,202,201		)	(2,241,928		)
Future development costs	(1,964,450		)	(1,699,909		)	(1,264,493		)
Future income taxes (1)	(1,005,837		)	(445,056		)	—
Future net cash flows	6,918,459			4,762,586			2,397,208
Less 10% annual discount to reflect timing of cash flows	(3,282,901		)	(2,297,544		)	(1,093,779		)
Standardized measure of discounted future net cash flows		$3,635,558			$2,465,042			$1,303,429

(1) Future income taxes in the calculation of the standardized measure of discounted future net cash flows were zero as of December 31, 2016, as the historical tax basis of proved oil and gas properties, net operating loss carryforwards, and future tax deductions exceeded the undiscounted future net cash flows before income taxes of the Company’s proved oil and gas reserves as of December 31, 2016.

Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows

Changes in the standardized measure of discounted future net cash flows relating to proved reserves are summarized below:

	Years Ended December 31,
	2018			2017			2016
	(In thousands)
Standardized measure at beginning of year		$2,465,042			$1,303,429			$1,365,224
Revisions to reserves proved in prior years:
Net change in sales prices and production costs related to future production		$809,182			$710,773			($346,763	)
Net change in estimated future development costs	(9,627		)	(51,854		)	74,407
Net change due to revisions in quantity estimates	(250,817		)	(42,214		)	(150,245		)
Accretion of discount	263,837			130,343			136,522
Changes in production rates (timing) and other	(19,539		)	(116,056		)	(111,137		)
Total revisions to reserves proved in prior years	793,036			630,992			(397,216		)
Net change due to extensions and discoveries, net of estimated future development and production costs	1,127,748			597,502			313,201
Net change due to purchases of reserves in place	60,264			452,932			43,426
Net change due to divestitures of reserves in place	(181,308		)	(106,608		)	—
Sales of crude oil, NGLs and natural gas produced, net of production costs	(843,333		)	(566,258		)	(320,272		)
Previously estimated development costs incurred	496,600			326,383			299,066
Net change in income taxes	(282,491		)	(173,330		)	—
Net change in standardized measure of discounted future net cash flows	1,170,516			1,161,613			(61,795		)
Standardized measure at end of year		$3,635,558			$2,465,042			$1,303,429

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Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Information

The following is a summary of the unaudited quarterly financial data for the years ended December 31, 2018 and 2017:

Year Ended December 31, 2018	First Quarter (3)		Second Quarter (4)		Third Quarter		Fourth Quarter (5)
	(In thousands, except per share amounts)
Total revenues		$225,280		$263,973		$303,375		$273,314
Operating profit (1)		$108,992		$140,265		$165,141		$129,405
Net income		$27,492		$35,309		$81,346		$260,280
Net income attributable to common shareholders		$14,743		$30,095		$76,118		$255,120
Net income attributable to common shareholders per common share (2)
Basic		$0.18		$0.37		$0.88		$2.79
Diluted		$0.18		$0.36		$0.85		$2.75

Year Ended December 31, 2017	First Quarter		Second Quarter		Third Quarter (6)		Fourth Quarter (7)
	(In thousands, except per share amounts)
Total revenues		$151,355		$166,483		$181,279		$246,771
Operating profit (1)		$57,953		$63,147		$69,364		$113,205
Net income (loss)		$40,021		$56,306		$7,823		($17,040	)
Net income (loss) attributable to common shareholders		$40,021		$56,306		$5,574		($23,434	)
Net income (loss) attributable to common shareholders per common share (2)
Basic		$0.61		$0.86		$0.07		($0.29	)
Diluted		$0.61		$0.85		$0.07		($0.29	)

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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Summary of Significant Accounting Policies [Line Items]
Other Accounts Payable and Accrued Liabilities	$ 70,400,000	$ 62,600,000
Reserves discount factor	10.00%
Contract with Customer, Asset, Gross	$ 77,100,000	85,600,000
Compensation Cost, Expired Cash Stock Appreciation Rights	$ 0
Tax Adjustments, Settlements, and Unusual Provisions		15,700,000
Tax Adjustments, Settlements, and Unusual Provisions, Retained Earnings Effect		$ 0.0
Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Estimated useful life, minimum, years	3 years
Operating Lease, Right-of-Use Asset	$ 75,000,000
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Estimated useful life, minimum, years	10 years
Operating Lease, Right-of-Use Asset	$ 100,000,000
Restricted Stock Awards And Units [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period, in years	1 year
Restricted Stock Awards And Units [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period, in years	3 years
Stock Appreciation Rights (SARs) [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period, in years	2 years
Expiration period, in years	5 years
Stock Appreciation Rights (SARs) [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period, in years	3 years
Expiration period, in years	7 years
Performance Shares [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period, in years	3 years
Performance Shares [Member] | Minimum [Member]
Summary of Significant Accounting Policies [Line Items]
Range of Awards to Vest Based on Market Condition	0.00%
Performance Shares [Member] | Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Range of Awards to Vest Based on Market Condition	200.00%
Contractor [Member] | Restricted Stock Awards And Units [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period, in years	3 years

XML

Summary of Significant Accounting Policies (Schedule of Major Customers) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Customer One [Member]
Revenue, Major Customer [Line Items]
Customer percentage of total revenue	73.00%	69.00%	56.00%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Customer percentage of total revenue			15.00%

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Summary of Significant Accounting Policies (Schedule of Earnings Per Share Reconciliation) (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Attributable to Parent	$ 260,280,000	$ 81,346,000	$ 35,309,000	$ 27,492,000	$ (17,040,000)	$ 7,823,000	$ 56,306,000	$ 40,021,000	$ 404,427,000	$ 87,110,000	$ (675,474,000)
Preferred Stock Dividends, Income Statement Impact									18,161,000	7,781,000	0
Accretion on preferred stock									(3,057,000)	(862,000)	0
Gain (Loss) On Redemption Of Preferred Stock				7,100,000					(7,133,000)	0	0
Net Income (Loss) Attributable to Common Shareholders	$ 255,120,000	$ 76,118,000	$ 30,095,000	$ 14,743,000	$ (23,434,000)	$ 5,574,000	$ 56,306,000	$ 40,021,000	$ 376,076,000	$ 78,467,000	$ (675,474,000)
Weighted Average Number of Shares Outstanding, Basic									85,509	73,421	59,932
Nonvested Shares with Forfeitable Dividends									949	269	0
Warrants									685	303	0
Weighted Average Number of Shares Outstanding, Diluted									87,143	73,993	59,932
Net Income (Loss) Attributable to Common Shareholders Per Common Share
Net Income (Loss) Attributable to Common Shareholders, Per Basic Share	$ 2.79	$ 0.88	$ 0.37	$ 0.18	$ (0.29)	$ 0.07	$ 0.86	$ 0.61	$ 4.40	$ 1.07	$ (11.27)
Net Income (Loss) Attributable to Common Shareholders, Per Diluted Share	$ 2.75	$ 0.85	$ 0.36	$ 0.18	$ (0.29)	$ 0.07	$ 0.85	$ 0.61	$ 4.32	$ 1.06	$ (11.27)

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Summary of Significant Accounting Policies (Schedule of Antidilutive Shares Excluded from Earnings Per Share) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock And Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	19	52	669

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Summary of Significant Accounting Policies (Schedule of Impact of Adoption) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 273,314	$ 303,375	$ 263,973	$ 225,280	$ 246,771	$ 181,279	$ 166,483	$ 151,355	$ 1,065,942	$ 745,888	$ 443,594
Lease operating									161,596	139,854	98,717
Income (loss) before income taxes									409,600	91,140	(675,474)
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									1,057,606
Lease operating									153,260
Income (loss) before income taxes									409,600
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Lease operating									8,336
Income (loss) before income taxes									0
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									$ 8,336
Crude Oil [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Difference Between Revenue Guidance In Effect Before And After Topic 606									0.10%
Natural Gas Liquids
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Difference Between Revenue Guidance In Effect Before And After Topic 606									5.40%
Natural Gas [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Difference Between Revenue Guidance In Effect Before And After Topic 606									5.10%
Barrel of Oil Equivalent [Domain]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Difference Between Revenue Guidance In Effect Before And After Topic 606									0.80%
Operating Expense [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Difference Between Revenue Guidance In Effect Before And After Topic 606									5.40%
Income Before Income Taxes [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Percent Difference Between Revenue Guidance In Effect Before And After Topic 606									0.00%
Oil and Condensate
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									$ 911,554	633,233	378,073
Oil and Condensate | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									910,975
Oil and Condensate | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									579
Natural Gas Liquids
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									96,585	47,405	22,428
Natural Gas Liquids | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									91,608
Natural Gas Liquids | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									4,977
Natural Gas
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									57,803	$ 65,250	$ 43,093
Natural Gas | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									55,023
Natural Gas | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									$ 2,780

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Acquisitions and Divestitures (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended						3 Months Ended								8 Months Ended	12 Months Ended				15 Months Ended
	Feb. 28, 2018	Jan. 31, 2018	Apr. 30, 2017	Jan. 31, 2017	Dec. 31, 2016	Oct. 31, 2016	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jul. 31, 2018	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Jul. 11, 2018	Dec. 11, 2017	Nov. 20, 2017	Oct. 05, 2017	Aug. 31, 2017
Business Acquisition [Line Items]
Payments to Acquire Oil and Gas Property																$ 204,854		$ 695,774	$ 153,521
Proceeds from divestitures of oil and gas properties													$ 15,300			381,434		197,564	15,564
Devon Acquisition [Member]
Business Acquisition [Line Items]
Agreed Upon Purchase Price of Oil and Gas Property and Equipment								$ 215,000
Deposit For Acquisition Of Oil And Gas Properties								21,500
Payments to Acquire Oil and Gas Property							$ 183,400
Revenue of Acquiree since Acquisition Date, Actual																4,600
Earnings (Loss) of Acquiree since Acquisition Date, Actual																2,700
Estimated Aggregate Purchase Price																196,600
Delaware Basin Divestiture [Member]
Business Acquisition [Line Items]
Agreed Upon Sale Price of Oil and Gas Property and Equipment																					$ 30,000
Proceeds from divestitures of oil and gas properties								31,400								30,900
Cash Paid for Post-Closing Adjustments to Divestitures							$ (500)
Eagle Ford Shale Divestiture [Member]
Business Acquisition [Line Items]
Agreed Upon Sale Price of Oil and Gas Property and Equipment																						$ 245,000
Proceeds from divestitures of oil and gas properties															$ 245,700
Cash Paid for Post-Closing Adjustments to Divestitures								(500)
Niobrara Divestiture [Member]
Business Acquisition [Line Items]
Agreed Upon Sale Price of Oil and Gas Property and Equipment																							$ 140,000
Proceeds from divestitures of oil and gas properties									$ 122,600	$ 14,000							$ 135,600
Cash Paid for Post-Closing Adjustments to Divestitures								$ (1,000)
ExL Acquisition [Member]
Business Acquisition [Line Items]
Agreed Upon Purchase Price of Oil and Gas Property and Equipment												$ 648,000
Payments to Acquire Oil and Gas Property												$ 75,000						679,800
Revenue of Acquiree since Acquisition Date, Actual																225,135		53,548
Earnings (Loss) of Acquiree since Acquisition Date, Actual																176,881		44,304
Marcellus Shale Divestiture [Member]
Business Acquisition [Line Items]
Agreed Upon Sale Price of Oil and Gas Property and Equipment																								$ 84,000
Proceeds from divestitures of oil and gas properties										73,900
Utica Shale Divestiture [Member]
Business Acquisition [Line Items]
Agreed Upon Sale Price of Oil and Gas Property and Equipment																									$ 62,000
Proceeds from divestitures of oil and gas properties																		63,100
Sanchez Acquisition [Member]
Business Acquisition [Line Items]
Agreed Upon Purchase Price of Oil and Gas Property and Equipment														$ 181,000
Payments to Acquire Oil and Gas Property			$ 9,800	$ 7,000	$ 143,500	$ 10,000														$ 170,300
Revenue of Acquiree since Acquisition Date, Actual																57,780		37,780	1,459
Earnings (Loss) of Acquiree since Acquisition Date, Actual																$ 38,551		$ 16,459	$ 966
Deposit Received Prior To Closing [Member] | Eagle Ford Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties										24,500
Deposit Received Prior To Closing [Member] | Marcellus Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties										6,300
Deposit Received Prior To Closing [Member] | Utica Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties											$ 6,200
Cash Received At Closing [Member] | Eagle Ford Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties		$ 211,700
Cash Received At Closing [Member] | Marcellus Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties										67,600
Cash Received At Closing [Member] | Utica Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties										54,400
Cash Received Post Closing [Member] | Eagle Ford Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties	$ 10,000
Cash Received Post Closing [Member] | Utica Shale Divestiture [Member]
Business Acquisition [Line Items]
Proceeds from divestitures of oil and gas properties										2,500
Cash Paid At Closing [Member] | ExL Acquisition [Member]
Business Acquisition [Line Items]
Payments to Acquire Oil and Gas Property											$ 601,000
Cash Paid Post Closing [Member] | ExL Acquisition [Member]
Business Acquisition [Line Items]
Payments to Acquire Oil and Gas Property										$ 3,800

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Acquisitions and Divestitures (Schedule of Consideration Paid for Assets Acquired and Liabilities Assumed) (Table) (Details) - USD ($) $ in Thousands	Oct. 17, 2018	Aug. 10, 2017
Devon Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Oil and Gas Properties, Net	$ 47,370
Business Combination, Unproved Oil and Gas Properties	150,253
Business Combination, Oil and Gas Properties	197,623
Business Combination, Total Assets	197,623
Business Combination, Current Liabilities	855
Business Combination, Noncurrent Liabilities	170
Business Combination, Liabilities	1,025
Business Combination, Net	$ 196,598
ExL Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Current Assets		$ 106
Business Combination, Oil and Gas Properties, Net		294,754
Business Combination, Unproved Oil and Gas Properties		443,194
Business Combination, Oil and Gas Properties		737,948
Business Combination, Total Assets		738,054
Business Combination, Current Liabilities		5,785
Business Combination, Noncurrent Liabilities		153
Business Combination, Contingent Consideration, Liability		52,300
Business Combination, Liabilities		58,238
Business Combination, Net		$ 679,816

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Acquisitions and Divestitures (Schedule of Results of Operations) (Table) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Devon Acquisition [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	$ 1,086,742	$ 753,474
Business Acquisition, Pro Forma Net Income (Loss)	$ 384,639	$ 78,118
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 4.21	$ 0.94
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 4.13	$ 0.94
Weighted Average Basic Shares Outstanding, Pro Forma	91,444	82,921
Pro Forma Weighted Average Shares Outstanding, Diluted	93,077	83,493
ExL Acquisition [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 781,378	$ 454,913
Business Acquisition, Pro Forma Net Income (Loss)		$ 91,931	$ (688,180)
Business Acquisition, Pro Forma Earnings Per Share, Basic		$ 1.25	$ (9.11)
Business Acquisition, Pro Forma Earnings Per Share, Diluted		$ 1.24	$ (9.11)
Weighted Average Basic Shares Outstanding, Pro Forma		73,421	75,532
Pro Forma Weighted Average Shares Outstanding, Diluted		73,993	75,532

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Acquisitions and Divestitures (Schedule of Revenue and Income Since Acquisition Date) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ExL Acquisition [Member]
Schedule of Revenue of Acquiree Since Acquisition Date [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 225,135	$ 53,548
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	176,881	44,304
Sanchez Acquisition [Member]
Schedule of Revenue of Acquiree Since Acquisition Date [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	57,780	37,780	$ 1,459
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 38,551	$ 16,459	$ 966

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Property And Equipment, Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Internal costs capitalized, oil and gas producing activities	$ 17,000	$ 14,800	$ 10,500
Capitalized interest	36,600	28,300	17,000
Unproved properties, not being amortized	673,833	660,287
Capitalized costs of unproved properties	218,900	397,700	57,200
Impairment of proved oil and gas properties	$ 0	$ 0	$ 576,540

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Property And Equipment, Net (Schedule Of Property And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Proved properties, net	$ 6,278,321	$ 5,615,153
Accumulated DD&A and impairments	(3,944,851)	(3,649,806)
Proved properties, net	2,333,470	1,965,347
Unproved properties, not being amortized
Unevaluated leasehold and seismic costs	608,830	612,589
Capitalized interest	65,003	47,698
Total unproved properties, not being amortized	673,833	660,287
Other property and equipment	29,191	25,625
Accumulated depreciation	(17,970)	(15,449)
Other property and equipment, net	11,221	10,176
Total property and equipment, net	$ 3,018,524	$ 2,635,810

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Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2017
Income Taxes [Line Items]
U.S. federal statutory corporate pretax rate	21.00%	35.00%
Income Tax Rate Reconciliation, US Federal Rate Reduction	$ 0	$ 211,724,000	$ 0
Valuation Allowance, Effect Of Tax Cuts And Jobs Act		211,724,000
Tax Adjustments, Settlements, and Unusual Provisions		15,700,000
Tax Adjustments, Settlements, and Unusual Provisions, Retained Earnings Effect		0.0
Deferred Tax Assets, Valuation Allowance	$ 242,913,000	$ 333,029,000	$ 564,434,000	$ 580,100,000
Ownership percentage change	5.00%
Change in beneficial ownership, percentage	50.00%
United States Of America [Member]
Income Taxes [Line Items]
Operating loss carry forwards subject to expiration	$ 1,062,500,000

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Income Taxes (Schedule Of Components Of Income Tax (Expense) Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current income tax expense
U.S. Federal	$ 0	$ 0	$ 0
State	(792)	(395)	0
Total current income tax expense	(792)	(395)	0
Deferred income tax expense
U.S. Federal	0	0	0
State	(4,381)	(3,635)	0
Total deferred income tax expense	(4,381)	(3,635)	0
Income tax expense	$ (5,173)	$ (4,030)	$ 0

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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income (loss) before income taxes	$ 409,600	$ 91,140	$ (675,474)
Income tax (expense) benefit at the U.S. federal statutory rate	(86,016)	(31,899)	236,416
State income tax (expense) benefit, net of U.S. federal income tax benefit	(5,173)	(4,030)	3,894
Tax deficiencies related to stock-based compensation	(2,572)	(3,089)	0
Provisional impact of Tax Cuts and Jobs Act	0	(211,724)	0
Change in valuation allowance from provisional impact of Tax Cuts and Jobs Act	0	211,724	0
(Increase) decrease in valuation allowance due to current period activity	90,116	35,376	(240,864)
Other	(1,528)	(388)	554
Income tax expense	$ (5,173)	$ (4,030)	$ 0

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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2016
Deferred income tax liabilities
Oil and gas properties	$ (16,610)	$ (3,635)
Derivative assets	(10,008)	(2,140)
Deferred income tax liabilities	(26,618)	(5,775)
Deferred income tax assets
Net operating loss carryforward - U.S. federal and state	235,788	242,915
Oil and gas properties	0	50,177
Asset retirement obligations	3,927	4,996
Derivative liabilities	20,165	35,585
Other	1,634	1,496
Total deferred income tax assets	261,514	335,169
Deferred income tax asset valuation allowance	(242,913)	(333,029)	$ (580,100)	$ (564,434)
Net deferred income tax assets	18,601	2,140
Net deferred income tax asset (liability)	$ (8,017)	$ (3,635)

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Debt (Narrative) (Details) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended			6 Months Ended	12 Months Ended
	May 31, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 28, 2018	Dec. 31, 2018 USD ($) Rate	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 19, 2018 USD ($)	Oct. 29, 2018 USD ($)	May 04, 2018 USD ($)	May 03, 2018	Jan. 31, 2018 USD ($)	Jul. 14, 2017 USD ($)	Apr. 28, 2015
Debt Instrument [Line Items]
Gains (Losses) on Extinguishment of Debt				$ 8,700	$ (4,170)		$ (9,586)	$ (4,170)	$ 0
Change of control repurchase price percentage		101.00%	101.00%				101.00%
Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility current borrowing base		$ 1,300,000	$ 1,300,000		900,000		$ 1,300,000	900,000			$ 1,300,000	$ 1,000,000		$ 830,000
Line of Credit Facility, Elected Borrowing Capacity		1,100,000	1,100,000				1,100,000				$ 1,100,000	$ 900,000		$ 800,000
Line of credit facility amount outstanding		$ 744,431	$ 744,431		291,300		$ 744,431	291,300
Debt, Weighted Average Interest Rate		4.17%	4.17%				4.17%
Ratio of total debt to EBITDA							2.41
Pre-Tax SEC PV10 Reserve Value Percentage | Rate							90.00%
Federal funds rate plus percentage		0.50%	0.50%				0.50%
Adjusted LIBO rate plus percentage		1.00%	1.00%				1.00%
Current Ratio		1.51	1.51				1.51
Increase To Margin For Eurodollar And Base Rate Loans		0.25%
Ratio Of Total Debt To EBITDA To Increase Interest Rate		3.00
Senior Secured Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Current Ratio		1.00	1.00				1.00
Margin for eurodollar loans				2.00%		1.50%
Margin for base rate loans				1.00%		0.50%
Senior Secured Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Ratio of total debt to EBITDA							4.00
Margin for eurodollar loans				3.00%		2.50%
Margin for base rate loans				2.00%		1.50%
8.25% Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount															$ 250,000
Debt instrument interest rate															8.25%
Long-term Debt, Gross		$ 250,000	$ 250,000		250,000		$ 250,000	250,000
Proceeds from Issuance of Debt					245,400
7.50% Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument interest rate		7.50%	7.50%				7.50%
Long-term Debt, Gross		$ 0	$ 0		450,000		$ 0	450,000
Debt Instrument, Repurchased Face Amount				$ 320,000	$ 150,000			150,000		$ 130,000
Redemption Premium							6,000	2,800
Debt Instrument, Redemption, Cash Consideration							468,600	156,000
Accrued interest paid associated with redemption of debt							12,600	3,200
Gains (Losses) on Extinguishment of Debt							(9,586)	(4,170)
Write off of Deferred Debt Issuance Cost							3,600	$ 1,400
Redemption price, percentage of principal amount				101.875%	101.875%			101.875%		100.00%
6.25% Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument interest rate																6.25%
Long-term Debt, Gross		650,000	$ 650,000		$ 650,000		650,000	$ 650,000
6.25% Senior Notes [Member] | On and after April 15, 2018 [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage			100.00%
6.25% Senior Notes [Member] | On and after April 15, 2018 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage			104.688%
Other Long Term Debt [Member]
Debt Instrument [Line Items]
Debt instrument interest rate													4.375%
Long-term Debt, Gross		$ 0	$ 0		$ 4,425		$ 0	$ 4,425
Debt Instrument, Redemption, Cash Consideration	$ 4,500
Accrued interest paid associated with redemption of debt	$ 100
Redemption price, percentage of principal amount													100.00%
Prior to July 15, 2020 [Member] | 8.25% Senior Notes [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal amount															100.00%
On And After July 15, 2020 [Member] | 8.25% Senior Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal amount															100.00%
On And After July 15, 2020 [Member] | 8.25% Senior Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal amount															106.188%
Less than 25 percent [Member] | Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.375%
Margin for eurodollar loans		1.25%
Margin for base rate loans		0.25%
Greater than or equal to 90 percent [Member] | Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.50%
Margin for eurodollar loans		2.25%
Margin for base rate loans		1.25%

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Debt (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 1,633,591	$ 1,629,209
Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility amount outstanding	744,431	291,300
7.50% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	0	450,000
Debt Instrument, Unamortized Premium	0	579
Unamortized Debt Issuance Expense	0	(4,492)
6.25% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	650,000	650,000
Unamortized Debt Issuance Expense	(6,878)	(8,208)
8.25% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	250,000	250,000
Unamortized Debt Issuance Expense	(3,962)	(4,395)
Other Long Term Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0	$ 4,425

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Debt (Interest and Commitment Fee Rates) (Details) - Senior Secured Revolving Credit Facility [Member]	2 Months Ended
	Dec. 31, 2018
Less than 25 percent [Member]
Interest and Commitment Fee Rates [Line Items]
Margin for base rate loans	0.25%
Margin for eurodollar loans	1.25%
Line of Credit Facility, Commitment Fee Percentage	0.375%
Greater than or equal to 25 percent but less than 50 percent [Member]
Interest and Commitment Fee Rates [Line Items]
Margin for base rate loans	0.50%
Margin for eurodollar loans	1.50%
Line of Credit Facility, Commitment Fee Percentage	0.375%
Greater than or equal to 50 percent but less than 75 percent [Member]
Interest and Commitment Fee Rates [Line Items]
Margin for base rate loans	0.75%
Margin for eurodollar loans	1.75%
Line of Credit Facility, Commitment Fee Percentage	0.50%
Greater than or equal to 75 percent but less than 90 percent [Member]
Interest and Commitment Fee Rates [Line Items]
Margin for base rate loans	1.00%
Margin for eurodollar loans	2.00%
Line of Credit Facility, Commitment Fee Percentage	0.50%
Greater than or equal to 90 percent [Member]
Interest and Commitment Fee Rates [Line Items]
Margin for base rate loans	1.25%
Margin for eurodollar loans	2.25%
Line of Credit Facility, Commitment Fee Percentage	0.50%

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Asset Retirement Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset retirement obligations, beginning of period	$ 23,792	$ 21,240
Liabilities incurred	1,676	3,920
Liabilities settled	0	(343)
Reduction due to sales of oil and gas properties	(8,547)	(2,671)
Accretion expense	1,366	1,799
Revisions to estimated cash flows	245	(306)
Asset retirement obligations, end of period	18,702	23,792
Current asset retirement obligations (included in other current liabilities)	(342)	(295)
Non-current asset retirement obligations	18,360	23,497
Eagle Ford Shale Transaction [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Liabilities incurred		$ 153
ExL Acquisition [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Liabilities incurred	$ 170

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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Rent expense	$ 1.4	$ 1.7	$ 2.0

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Commitments and Contingencies (Schedule of Contractual Obligations) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating leases
Less than 1 year	$ 10,024
Due in second year	9,154
Due in third year	6,249
Due in fourth year	3,639
Due in fifth year	3,680
More than 5 years	20,978
Total	53,724
Drilling rig contracts
Less than 1 year	37,077
Due in second year	16,867
Due in third year	813
Due in fourth year	0
Due in fifth year	0
More than 5 years	0
Total	54,757
Delivery commitments
Less than 1 year	3,726
Due in second year	2,807
Due in third year	2,487
Due in fourth year	30
Due in fifth year	7
More than 5 years	19
Total	9,076
Produced water disposal commitments
Less than 1 year	18,139
Due in second year	20,894
Due in third year	20,898
Due in fourth year	20,954
Due in fifth year	10,471
More than 5 years	9,769
Total	101,125
Other
Less than 1 year	1,800
Due in second year	1,050
Due in third year	0
Due in fourth year	0
Due in fifth year	0
More than 5 years	0
Total	2,850
Total
Less than 1 year	70,766
Due in second year	50,772
Due in third year	30,447
Due in fourth year	24,623
Due in fifth year	14,158
More than 5 years	30,766
Total	$ 221,532

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Preferred Stock (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 24, 2018	Aug. 10, 2017
Preferred Stock Disclosure [Line Items]
Temporary Equity, Par Value							$ 250,000,000
Temporary Equity, Shares Issued			200,000	250,000			250,000
Preferred Stock, Dividend Rate, Percentage		8.875%
Preferred Stock, Par or Stated Value Per Share			$ 0.01	$ 0.01			$ 0.01
Issuance of warrants to purchase common stock		2,750,000
Class of Warrant or Right Term		10 years
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 16.08					16.08
Cash Purchase Price Per Share of Preferred Stock							$ 970.00
Sale of preferred stock, net of issuance costs		$ 236,404,000	$ 0	$ 236,404,000	$ 0
Maximum Preferred Stock Shares Redeemable Within the First Year							50,000
Temporary Equity, Liquidation Preference Per Share							$ 1,000.00
Preferred Stock Shares Redeemed						50,000
Preferred Stock, Percentage Redeemed						20.00%
Payments for Repurchase of Redeemable Preferred Stock			$ 50,500,000
Preferred Stock, Redemption Premium, Percentage			104.4375%
Preferred Stock, Percent of Ownership to be Able to Vote			50.00%
Preferred Stock, Prohibited Distributions			$ 15,000,000
Proceeds from Issuance of Preferred Stock and Preference Stock		213,400,000
Proceeds from Issuance of Warrants		$ 23,000,000		23,003,000
Dividends on preferred stock			(18,161,000)	(7,781,000)	0
Accretion on preferred stock			(3,057,000)	(862,000)	0
Redemption Price Of Preferred Stock			50,030,000
Payments Of Accrued Dividends Upon Redemption Of Preferred Stock			500,000
Gain (Loss) On Redemption Of Preferred Stock	$ 7,100,000		(7,133,000)	0	$ 0
Redemption Of Preferred Stock			$ (42,897,000)	$ 0
On or before the seventh anniversary of the Preferred Stock Issuance Date [Domain]
Preferred Stock Disclosure [Line Items]
Preferred Stock, Dividend Rate, Percentage			12.00%
After August 10, 2024 [Domain]
Preferred Stock Disclosure [Line Items]
Preferred Stock, Dividend Rate, Percentage			12.00%
Libor Rate to Calculate Preferred Stock Dividend Rate			10.00%

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Preferred Stock (Warrants Valuation Assumptions) (Details) - $ / shares	3 Months Ended
	Sep. 30, 2017	Aug. 10, 2017
Temporary Equity Disclosure [Abstract]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 16.08	$ 16.08
Class of Warrant or Right, Expected Term	10 years
Class of Warrant or Right, Expected Volatility Rate	62.90%
Class of Warrant or Right, Risk Free Interest Rate	2.20%
Class of Warrant or Right, Expected Dividend Rate	0.00%

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Preferred Stock (Schedule of Preferred Stock Activity) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Preferred Stock Activity [Abstract]
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	$ 174,422,000	$ 214,262,000	$ 0
Temporary Equity, Stock Issued During Period, Value, New Issues	0	213,400,000
Redemption Of Preferred Stock	(42,897,000)	0
Accretion on preferred stock	$ (3,057,000)	$ (862,000)	$ 0

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Preferred Stock (Schedule of Dividends Paid in Common Stock) (Details)	Dec. 31, 2018 Rate
Preferred Stock Dividend Paid in Common Stock Second Year [Member]
Schedule of Preferred Stock Dividend Paid in Common Stock [Line Items]
Percent of Dividend Payable in Common Stock	75.00%
Preferred Stock Dividend Paid in Common Stock Third Year [Member]
Schedule of Preferred Stock Dividend Paid in Common Stock [Line Items]
Percent of Dividend Payable in Common Stock	50.00%

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Preferred Stock (Schedule of Preferred Stock Redemption Premiums) (Details)	12 Months Ended
	Dec. 31, 2018
Schedule of Preferred Stock Redemption Premiums [Line Items]
Preferred Stock, Redemption Premium, Percentage	104.4375%
Preferred Stock Redemption Fourth Year [Member]
Schedule of Preferred Stock Redemption Premiums [Line Items]
Preferred Stock, Redemption Premium, Percentage	104.4375%
Preferred Stock Redemption Fifth Year [Member] [Member]
Schedule of Preferred Stock Redemption Premiums [Line Items]
Preferred Stock, Redemption Premium, Percentage	102.21875%
Preferred Stock Redemption Sixth Year [Member]
Schedule of Preferred Stock Redemption Premiums [Line Items]
Preferred Stock, Redemption Premium, Percentage	100.00%

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Shareholder's Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Aug. 17, 2018	Jul. 03, 2017	Oct. 28, 2016
Shareholder's Equity [Abstract]
Common stock, shares authorized (in shares)	180,000,000	180,000,000	90,000,000
Sale of common stock, shares	9,500,000	15,600,000	6,000,000
Sale of Stock, Price Per Share				$ 22.55	$ 14.28	$ 37.32
Sale of common stock, net of offering costs	$ 213,746	$ 222,378	$ 223,739

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Stock-based Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 16, 2017
Employee Stock Option [Member]
Share-based Compensation [Line Items]
Ratio Of Stock Based Compensation Shares to Common Shares			1.00
Restricted Stock Awards And Units [Member]
Share-based Compensation [Line Items]
Ratio Of Stock Based Compensation Shares to Common Shares			1.35
Compensation cost not yet recognized			$ 23.2
Compensation cost not yet recognized, period for recognition			1 year 10 months 13 days
Aggregate Intrinsic Value, Vested			$ 10.2	$ 20.3	$ 26.3
Vested Shares/Units			(621,399)	(635,965)	(811,136)
Cash Settled Stock Appreciation Rights Plan [Member]
Share-based Compensation [Line Items]
Vesting period, in years			3 years	2 years	2 years
Compensation cost not yet recognized			$ 2.4
Compensation cost not yet recognized, period for recognition			2 years 2 months 8 days
Expiration period, in years			7 years	5 years	5 years
Stock Issued During Period, Value, Gross			$ 4.9	$ 4.1	$ 3.7
Performance Shares [Member]
Share-based Compensation [Line Items]
Vesting period, in years			3 years
Compensation cost not yet recognized			$ 2.1
Compensation cost not yet recognized, period for recognition			1 year 9 months 14 days
Aggregate Intrinsic Value, Vested			$ 0.8	2.6
Stock Issued During Period, Value, Gross			$ 1.8	$ 1.6	$ 1.5
Vesting Percentage Of Target Performance Shares Granted	88.00%	164.00%
Share based Compensation Arrangements by Share Based Payment Award, Target Shares			56,517	56,342
Unearned Shares due to Market Condition	7,059		7,059
Vested Shares/Units	(49,458)	(92,200)	(49,458)	(56,342)	0
Minimum [Member] | Restricted Stock Awards And Units [Member]
Share-based Compensation [Line Items]
Vesting period, in years			1 year
Maximum [Member] | Restricted Stock Awards And Units [Member]
Share-based Compensation [Line Items]
Vesting period, in years			3 years
2017 Incentive Plan [Member]
Share-based Compensation [Line Items]
Maximum issuance of grant awards under Incentive Plan						2,675,000
Number of Shares Available for Grant			258,785
Other Current Liabilities [Member] | Cash Settled Stock Appreciation Rights Plan [Member]
Share-based Compensation [Line Items]
Liability for cash stock appreciation rights			$ 1.8	$ 4.4

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Stock-based Compensation (Summary Of Restricted Stock Award And Unit Activity) (Details) - Restricted Stock Awards And Units [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock Awards and Units
Unvested Shares/Units, Beginning of Period	1,482,655	1,111,710	1,041,997
Granted Shares/Units	1,458,421	1,020,465	887,254
Vested Shares/Units	(621,399)	(635,965)	(811,136)
Forfeited Shares/Units	(53,010)	(13,555)	(6,405)
Unvested Shares/Units, End of Period	2,266,667	1,482,655	1,111,710
Weighted Average Grant Date Fair Value
Grant-date Fair Value, Beginning of Period (USD per share)	$ 28.07	$ 36.93	$ 44.22
Granted, Grant-date Fair Value (USD per share)	15.49	25.63	27.80
Vested, Grant-date Fair Value (USD per share)	31.48	39.62	36.32
Forfeited, Grant-date Fair Value (USD per share)	17.72	29.11	34.46
Grant-date Fair Value, End of Period (USD per share)	$ 19.28	$ 28.07	$ 36.93

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Stock-based Compensation (Summary of SARs Activity) (Details) - Cash Settled Stock Appreciation Rights Plan [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
SARs, Outstanding, beginning of period	714,238	722,638	700,453
SARs, Granted	616,686	342,440	376,260
SARs, Exercised	0	(219,279)	(354,075)
SARs, Forfeitures	0	0	0
SARs, Expired	0	(131,561)	0
SARs, Outstanding, end of period	1,330,924	714,238	722,638
SARS, Vested, end of period	543,018	185,899	350,840
SARs, Exercisable, end of period	0	0	350,840
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Prices, Outstanding, Beginning of Period	$ 27.12	$ 23.69	$ 21.86
Weighted Average Exercise Prices, Granted	14.67	26.94	27.30
Weighted Average Exercise Prices, Exercised	0.00	17.28	23.89
Weighted Average Exercise Prices, Forfeitures	0.00	0.00	0.00
Weighted Average Exercise Prices, Expired (USD per share)	0.00	24.19	0.00
Weighted Average Exercise Prices, Outstanding, End of Period	21.35	27.12	23.69
Weighted Average Exercise Prices, Vested, End of Period	27.18	27.30	19.87
Weighted Average Exercise Prices, Exercisable, End of Period	$ 27.18	$ 27.30	$ 19.87
Cash paid at exercises, Stock Appreciation Rights	$ 0.0	$ 2.1	$ 5.2
Weighted Average Remaining Life, Outstanding, End of Period	4 years 3 months 29 days
Weighted Average Remaining Life, Exercisable, End of Period	2 years 6 months 9 days
Aggregate Intrinsic Value, Outstanding, End of Period	$ 0.0
Aggregate Intrinsic Value, Exercisable, End of Period	$ 0.0

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Stock-based Compensation (Summary of Stock Appreciation Rights Fair Value Assumptions) (Details) - Cash Settled Stock Appreciation Rights Plan [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation [Line Items]
Expected Term	6 years	4 years 2 months 6 days	3 years 11 months 5 days
Expected volatility	54.30%	54.30%	45.10%
Risk-free interest rate	2.80%	1.80%	1.30%
Dividend yield	0.00%	0.00%	0.00%
Grant date fair value per Cash SAR	$ 7.89	$ 12.00	$ 9.88

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Stock-based Compensation (Summary of Performance Share Award Activity) (Details) - Performance Shares [Member] - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Target Performance Shares (1)
Unvested Shares/Units, Beginning of Period	144,955	154,510	144,955	154,510	112,859
Granted Shares/Units			93,771	46,787	41,651
Vested Shares/Units	(49,458)	(92,200)	(49,458)	(56,342)	0
Unearned Shares due to Market Condition	(7,059)		(7,059)
Forfeited Shares/Units			0	0	0
Unvested Shares/Units, End of Period			182,209	144,955	154,510
Weighted Average Grant Date Fair Value
Grant-date Fair Value, Beginning of Period (USD per share)	$ 47.14	$ 58.44	$ 47.14	$ 58.44	$ 66.83
Granted, Grant-date Fair Value (USD per share)			19.09	35.14	35.71
Vested, Grant-date Fair Value (USD per share)			65.51	68.15	0.00
Unearned Shares due to Market Condition, Weighted Average Grant Date Fair Value			65.51
Forfeited, Grant-date Fair Value (USD per share)			0.00	0.00	0.00
Grant-date Fair Value, End of Period (USD per share)			$ 27.01	$ 47.14	$ 58.44

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Stock-based Compensation (Summary of Performance Share Awards Fair Value Assumptions) (Details) - Performance Shares [Member]	12 Months Ended
	Dec. 31, 2018 $ / shares Rate	Dec. 31, 2017 $ / shares Rate	Dec. 31, 2016 $ / shares Rate
Number of simulations	500,000	500,000	500,000
Expected Term	3 years 6 days	2 years 11 months 23 days	3 years 2 days
Expected volatility	61.50%	59.20%	55.30%
Risk-free interest rate	2.40%	1.50%	1.20%
Dividend yield	0.00%	0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares	$ 19.09	$ 35.14	$ 35.71

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Stock-based Compensation (Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 17,648	$ 18,791	$ 40,677
Less: amounts capitalized	(4,124)	(4,482)	(4,591)
Total stock-based compensation expense	13,524	14,309	36,086
Restricted Stock Awards And Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	18,434	21,372	28,196
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	(2,571)	(5,023)	9,675
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 1,785	$ 2,442	$ 2,806

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Derivative Instruments (Schedule of Crude Oil Derivative Positions) (Details) - Crude Oil [Member]	Dec. 31, 2018 bbl / d $ / bbls
Three-way Collars [Member] | 1Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	27,000
Derivative Average Sub Floor Price	41.67
Weighted Average Floor Price ($/Bbl)	50.96
Weighted Average Ceiling Price ($/Bbl)	74.23
Three-way Collars [Member] | 2Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	27,000
Derivative Average Sub Floor Price	41.67
Weighted Average Floor Price ($/Bbl)	50.96
Weighted Average Ceiling Price ($/Bbl)	74.23
Three-way Collars [Member] | 3Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	27,000
Derivative Average Sub Floor Price	41.67
Weighted Average Floor Price ($/Bbl)	50.96
Weighted Average Ceiling Price ($/Bbl)	74.23
Three-way Collars [Member] | 4Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	27,000
Derivative Average Sub Floor Price	41.67
Weighted Average Floor Price ($/Bbl)	50.96
Weighted Average Ceiling Price ($/Bbl)	74.23
Sold Call Options [Member] | 1Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	3,875
Weighted Average Ceiling Price ($/Bbl)	81.07
Sold Call Options [Member] | 2Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	3,875
Weighted Average Ceiling Price ($/Bbl)	81.07
Sold Call Options [Member] | 3Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	3,875
Weighted Average Ceiling Price ($/Bbl)	81.07
Sold Call Options [Member] | 4Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	3,875
Weighted Average Ceiling Price ($/Bbl)	81.07
Sold Call Options [Member] | 2020 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	4,575
Weighted Average Ceiling Price ($/Bbl)	75.98
LLS-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 1Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Weighted Average Fixed Price	(5.16)
LLS-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 2Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Weighted Average Fixed Price	(5.16)
LLS-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 3Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Weighted Average Fixed Price	(5.16)
LLS-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 4Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Weighted Average Fixed Price	(5.16)
WTI Midland-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 1Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	5,500
Weighted Average Fixed Price	(5.24)
WTI Midland-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 2Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Weighted Average Fixed Price	(5.38)
WTI Midland-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 3Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	7,000
Weighted Average Fixed Price	(5.56)
WTI Midland-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 4Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	11,000
Weighted Average Fixed Price	(3.84)
WTI Midland-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 2020 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	13,000
Weighted Average Fixed Price	(1.27)
WTI Midland-WTI Cushing Price Differential [Member] | Basis Swap [Member] | 2021 [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Weighted Average Fixed Price	(0.03)

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Derivative Instruments (Schedule of Natural Gas Derivative Positions) (Details) - Natural Gas [Member] - Call Option [Member]	Dec. 31, 2018 MMBTU / d $ / MMBTU
1Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | MMBTU / d	33,000
Weighted Average Ceiling Price ($/MMBtu) | $ / MMBTU	3.25
2Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | MMBTU / d	33,000
Weighted Average Ceiling Price ($/MMBtu) | $ / MMBTU	3.25
3Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | MMBTU / d	33,000
Weighted Average Ceiling Price ($/MMBtu) | $ / MMBTU	3.25
4Q 2019 [Member]
Derivative [Line Items]
Derivative, Volumes | MMBTU / d	33,000
Weighted Average Ceiling Price ($/MMBtu) | $ / MMBTU	3.25
2020 [Member]
Derivative [Line Items]
Derivative, Volumes | MMBTU / d	33,000
Weighted Average Ceiling Price ($/MMBtu) | $ / MMBTU	3.50

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Derivative Instruments (Schedule of Contingent Consideration) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) $ / bbls $ / MMBTU
ExL Acquisition [Member]
Embedded Derivative [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 125,000
Marcellus Shale Divestiture [Member]
Embedded Derivative [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 7,500
2018 [Member] | ExL Acquisition [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Payments For Acquisition | $ / bbls	50.00
Contingent Consideration Arrangement, Potential Additional Annual Payments for Acquisition	$ (50,000)
2018 [Member] | Niobrara Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Proceeds From Divestiture | $ / bbls	55.00
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 5,000
2018 [Member] | Marcellus Shale Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per MMBtu For Additional Payments From Divestiture | $ / MMBTU	3.13
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 3,000
2018 [Member] | Utica Shale Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Proceeds From Divestiture | $ / bbls	50.00
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 5,000
2019 [Member] | ExL Acquisition [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Payments For Acquisition | $ / bbls	50.00
Contingent Consideration Arrangement, Potential Additional Annual Payments for Acquisition	$ (50,000)
2019 [Member] | Niobrara Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Proceeds From Divestiture | $ / bbls	55.00
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 5,000
2019 [Member] | Marcellus Shale Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per MMBtu For Additional Payments From Divestiture | $ / MMBTU	3.18
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 3,000
2019 [Member] | Utica Shale Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Proceeds From Divestiture | $ / bbls	53.00
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 5,000
2020 [Member] | ExL Acquisition [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Payments For Acquisition | $ / bbls	50.00
Contingent Consideration Arrangement, Potential Additional Annual Payments for Acquisition	$ (50,000)
2020 [Member] | Niobrara Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Proceeds From Divestiture | $ / bbls	60.00
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 5,000
2020 [Member] | Marcellus Shale Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per MMBtu For Additional Payments From Divestiture | $ / MMBTU	3.30
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 3,000
2020 [Member] | Utica Shale Divestiture [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Proceeds From Divestiture | $ / bbls	56.00
Contingent Consideration Arrangement, Potential Additional Annual Proceeds From Divestiture	$ 5,000
2021 [Member] | ExL Acquisition [Member]
Embedded Derivative [Line Items]
Contingent Consideration Arrangement, Threshold Price Per Bbl For Additional Payments For Acquisition | $ / bbls	50.00
Contingent Consideration Arrangement, Potential Additional Annual Payments for Acquisition	$ (50,000)

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Derivative Instruments (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Current	$ 39,904	$ 0
Derivative Liability, Current	(55,205)	(57,121)
Derivative Liability, Noncurrent	(40,817)	(112,332)
Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	50,406	4,869
Derivative Asset, Fair Value, Gross Liability	(20,502)	(4,869)
Derivative Assets (Liabilities), at Fair Value, Net	29,904	0
Derivative Asset, Current	39,904	0
Derivative Asset, Gross Asset	60,406	4,869
Derivative Asset, Gross Liability	(20,502)	(4,869)
Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	6,083	9,505
Derivative Asset, Fair Value, Gross Liability	(4,236)	(9,505)
Derivative Assets (Liabilities), at Fair Value, Net	1,847	0
Derivative Asset, Gross Asset	11,988	19,695
Derivative Asset, Gross Liability	(4,236)	(9,505)
Derivative Asset, Noncurrent	7,752	10,190
Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	(5,205)	(57,121)
Derivative Liability, Fair Value, Gross Liability	(15,345)	(52,671)
Derivative Liability, Fair Value, Gross Asset	10,140	(4,450)
Derivative Deferred Premium, Net	0	0
Derivative Liability, Deferred Premiums, Gross Liability	(10,362)	(9,319)
Derivative Liability, Deferred Premiums, Gross Asset	10,362	9,319
Derivative Liability, Gross Liability	(75,707)	(61,990)
Derivative Liability, Gross Asset	20,502	4,869
Derivative Liability, Current	(55,205)	(57,121)
Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	(10,233)	(26,707)
Derivative Liability, Fair Value, Gross Liability	(10,751)	(24,609)
Derivative Liability, Fair Value, Gross Asset	518	(2,098)
Derivative Deferred Premium, Net	0	0
Derivative Liability, Deferred Premiums, Gross Liability	(3,718)	(11,603)
Derivative Liability, Deferred Premiums, Gross Asset	3,718	11,603
Derivative Liability, Gross Liability	(45,053)	(121,837)
Derivative Liability, Gross Asset	4,236	9,505
Derivative Liability, Noncurrent	(40,817)	(112,332)
Niobrara Divestiture [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Contingent Payment, Gross Asset	5,000
Derivative Asset, Contingent Payment, Gross Liability	0
Business Combination, Contingent Consideration, Asset, Current	5,000
Niobrara Divestiture [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Contingent Payment, Gross Asset	2,035
Derivative Asset, Contingent Payment, Gross Liability	0
Business Combination, Contingent Consideration, Asset, Noncurrent	2,035
Marcellus Shale Divestiture [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Contingent Payment, Gross Asset	1,369	2,205
Derivative Asset, Contingent Payment, Gross Liability	0	0
Business Combination, Contingent Consideration, Asset, Noncurrent	1,369	2,205
Utica Shale Divestiture [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Contingent Payment, Gross Asset	5,000
Derivative Asset, Contingent Payment, Gross Liability	0
Business Combination, Contingent Consideration, Asset, Current	5,000
Utica Shale Divestiture [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Contingent Payment, Gross Asset	2,501	7,985
Derivative Asset, Contingent Payment, Gross Liability	0	0
Business Combination, Contingent Consideration, Asset, Noncurrent	2,501	7,985
ExL Acquisition [Member] | Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Contingent Payment, Gross Liability	(50,000)
Derivative Liability, Contingent Payment, Gross Asset	0
Business Combination, Contingent Consideration, Liability, Current	(50,000)
ExL Acquisition [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Contingent Payment, Gross Liability	(30,584)	(85,625)
Derivative Liability, Contingent Payment, Gross Asset	0	0
Business Combination, Contingent Consideration, Liability, Noncurrent	$ (30,584)	$ (85,625)

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Derivative Instruments (Schedule of (Gain) Loss on Derivative Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
(Gain) loss on derivatives, net	$ (159,407)	$ 55,388	$ 67,714	$ 29,596	$ 86,107	$ 24,377	$ (26,065)	$ (25,316)	$ (6,709)	$ 59,103	$ 49,073
Crude Oil [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
(Gain) loss on derivatives, net									(9,726)	22,839	23,609
Natural Gas Liquids
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
(Gain) loss on derivatives, net									4,439	1,322	0
Natural Gas [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
(Gain) loss on derivatives, net									(421)	(15,399)	19,584
Deferred Premiums On Derivative Instruments [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
(Gain) loss on derivatives, net									1,875	18,401	5,880
ExL Acquisition [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net									(5,041)	33,325	0
Niobrara Divestiture [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net									845	0	0
Marcellus Shale Divestiture [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net									836	455	0
Utica Shale Divestiture [Member]
Derivative Instruments, (Gain) Loss, Commodity [Line Items]
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net									$ 484	$ (1,840)	$ 0

XML

Derivative Instruments (Schedule of Cash Received for Derivative Settlements) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Cash Received For Derivatives [Line Items]
Net Cash Received Paid For Derivative Settlements	$ (96,307)	$ 7,773	$ 119,369
Crude Oil [Member]
Schedule Of Cash Received For Derivatives [Line Items]
Net Cash Received Paid For Derivative Settlements	(78,570)	9,883	125,098
Natural Gas Liquids
Schedule Of Cash Received For Derivatives [Line Items]
Net Cash Received Paid For Derivative Settlements	(6,378)	0	0
Natural Gas [Member]
Schedule Of Cash Received For Derivatives [Line Items]
Net Cash Received Paid For Derivative Settlements	(1,710)	(54)	0
Deferred Premiums On Derivative Instruments [Member]
Schedule Of Cash Received For Derivatives [Line Items]
Net Cash Received Paid For Derivative Settlements	$ (9,649)	$ (2,056)	$ (5,729)

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Fair Value Measurements (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 0	$ 0
Derivative Liability	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	31,751	0
Derivative Liability	(15,438)	(83,828)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Derivative Liability	0	0
Niobrara Divestiture [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Niobrara Divestiture [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	7,035	0
Niobrara Divestiture [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Marcellus Shale Divestiture [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Marcellus Shale Divestiture [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	1,369	0
Marcellus Shale Divestiture [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	2,205
Utica Shale Divestiture [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	0
Utica Shale Divestiture [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	7,501	0
Utica Shale Divestiture [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0	7,985
ExL Acquisition [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	0	0
ExL Acquisition [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	(80,584)	0
ExL Acquisition [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	$ 0	$ (85,625)

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Fair Value Measurements (Schedule of Assets and Liabilities, Level 3 Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Contingent Consideration, Fair Value, Asset Value	$ 0	$ 10,190	$ 0
Fair Value, Asset, Issuances	7,880	8,805
Fair Value, Asset, Gain (Loss) Included in Earnings	(2,165)	1,385
Fair Value, Asset Transfers out of Level 3	(15,905)
Fair Value, Asset Transfers Into Level 3		0
Contingent Consideration, Fair Value, Liability Value	0	(85,625)	$ 0
Fair Value, Liability, Issuances	0	(52,300)
Fair Value, Liability, Gain (Loss) Included in Earnings	5,041	(33,325)
Fair Value, Liability Transfers out of Level 3	$ 80,584
Fair Value, Liability, Transfers Into Level 3		$ 0

XML

Fair Value Measurements (Schedule of Fair Value of Debt Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
7.50% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	$ 0	$ 450,000
8.25% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	250,000	250,000
Other Long Term Debt [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	0	4,425
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 7.50% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	0	450,000
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 6.25% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	650,000	650,000
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 8.25% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	250,000	250,000
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other Long Term Debt [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	0	4,425
Estimate of Fair Value Measurement [Member] | 7.50% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	0	459,518
Estimate of Fair Value Measurement [Member] | 6.25% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	599,625	674,375
Estimate of Fair Value Measurement [Member] | 8.25% Senior Notes [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	244,375	274,375
Estimate of Fair Value Measurement [Member] | Other Long Term Debt [Member]
Schedule of Fair Value of Debt Instruments [Line Items]
Long-term Debt, Gross	$ 0	$ 4,445

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Condensed Consolidating Financial Information (Narrative) (Details)	Dec. 31, 2018
Condensed Consolidating Financial Information [Abstract]
Voting interest of the subsidiary owned by the registrant	100.00%

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Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Balance Sheet) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Total current assets	$ 150,369,000	$ 122,878,000
Total property and equipment, net	3,018,524,000	2,635,810,000
Investment in subsidiaries	0	0
Other long-term assets	16,207,000	19,616,000
Total Assets	3,185,100,000	2,778,304,000
Current Liabilities	322,009,000	372,822,000
Long-term liabilities	1,707,765,000	1,820,323,000
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	174,422,000	214,262,000	$ 0
Total shareholders’ equity	980,904,000	370,897,000	$ 23,458,000	$ 444,054,000
Total Liabilities and Shareholders’ Equity	3,185,100,000	2,778,304,000
Reportable Legal Entities [Member] | Parent Company [Member]
Total current assets	3,341,680,000	3,441,633,000
Total property and equipment, net	7,951,000	5,953,000
Investment in subsidiaries	(419,159,000)	(999,793,000)
Other long-term assets	28,124,000	9,270,000
Total Assets	2,958,596,000	2,457,063,000
Current Liabilities	135,980,000	165,701,000
Long-term liabilities	1,650,589,000	1,689,466,000
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	174,422,000	214,262,000
Total shareholders’ equity	997,605,000	387,634,000
Total Liabilities and Shareholders’ Equity	2,958,596,000	2,457,063,000
Reportable Legal Entities [Member] | Combined Guarantor Subsidiaries [Member]
Total current assets	114,005,000	105,533,000
Total property and equipment, net	3,011,387,000	2,630,707,000
Investment in subsidiaries	0	0
Other long-term assets	5,906,000	10,346,000
Total Assets	3,131,298,000	2,746,586,000
Current Liabilities	3,491,337,000	3,631,401,000
Long-term liabilities	59,120,000	114,978,000
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	0	0
Total shareholders’ equity	(419,159,000)	(999,793,000)
Total Liabilities and Shareholders’ Equity	3,131,298,000	2,746,586,000
Reportable Legal Entities [Member] | Combined Non-Guarantor Subsidiaries [Member]
Total current assets	0	0
Total property and equipment, net	3,028,000	3,028,000
Investment in subsidiaries	0	0
Other long-term assets	0	0
Total Assets	3,028,000	3,028,000
Current Liabilities	3,028,000	3,028,000
Long-term liabilities	0	0
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	0	0
Total shareholders’ equity	0	0
Total Liabilities and Shareholders’ Equity	3,028,000	3,028,000
Consolidation, Eliminations [Member]
Total current assets	(3,305,316,000)	(3,424,288,000)
Total property and equipment, net	(3,842,000)	(3,878,000)
Investment in subsidiaries	419,159,000	999,793,000
Other long-term assets	(17,823,000)	0
Total Assets	(2,907,822,000)	(2,428,373,000)
Current Liabilities	(3,308,336,000)	(3,427,308,000)
Long-term liabilities	(1,944,000)	15,879,000
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of December 31, 2018 and 250,000 issued and outstanding as of December 31, 2017	0	0
Total shareholders’ equity	402,458,000	983,056,000
Total Liabilities and Shareholders’ Equity	$ (2,907,822,000)	$ (2,428,373,000)

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Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Statement Of Operations) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Total revenues	$ 273,314,000	$ 303,375,000	$ 263,973,000	$ 225,280,000	$ 246,771,000	$ 181,279,000	$ 166,483,000	$ 151,355,000	$ 1,065,942,000	$ 745,888,000	$ 443,594,000
Total costs and expenses									656,342,000	654,748,000	1,119,068,000
Income (loss) from continuing operations before income taxes									409,600,000	91,140,000	(675,474,000)
Operating income (loss)	129,405,000	165,141,000	140,265,000	108,992,000	113,205,000	69,364,000	63,147,000	57,953,000
Income tax expense									(5,173,000)	(4,030,000)	0
Equity in income of subsidiaries									0	0	0
Net Income (Loss)	260,280,000	81,346,000	35,309,000	27,492,000	(17,040,000)	7,823,000	56,306,000	40,021,000	404,427,000	87,110,000	(675,474,000)
Dividends on preferred stock									(18,161,000)	(7,781,000)	0
Accretion on preferred stock									(3,057,000)	(862,000)	0
Gain (Loss) On Redemption Of Preferred Stock				7,100,000					(7,133,000)	0	0
Net Income (Loss) Attributable to Common Shareholders	$ 255,120,000	$ 76,118,000	$ 30,095,000	$ 14,743,000	$ (23,434,000)	$ 5,574,000	$ 56,306,000	$ 40,021,000	376,076,000	78,467,000	(675,474,000)
Reportable Legal Entities [Member] | Parent Company [Member]
Total revenues									162,000	302,000	482,000
Costs and Expenses									176,406,000	195,728,000	208,054,000
Income (loss) from continuing operations before income taxes									(176,244,000)	(195,426,000)	(207,572,000)
Income tax expense									0	0	0
Equity in income of subsidiaries									580,634,000	282,499,000	(467,410,000)
Net Income (Loss)									404,390,000	87,073,000	(674,982,000)
Dividends on preferred stock									(18,161,000)	(7,781,000)	0
Accretion on preferred stock									(3,057,000)	(862,000)	0
Gain (Loss) On Redemption Of Preferred Stock									(7,133,000)	0	0
Net Income (Loss) Attributable to Common Shareholders									376,039,000	78,430,000	(674,982,000)
Reportable Legal Entities [Member] | Combined Guarantor Subsidiaries [Member]
Total revenues									1,065,780,000	745,586,000	443,112,000
Costs and Expenses									479,973,000	459,057,000	910,522,000
Income (loss) from continuing operations before income taxes									585,807,000	286,529,000	(467,410,000)
Income tax expense									(5,173,000)	(4,030,000)	0
Equity in income of subsidiaries									0	0	0
Net Income (Loss)									580,634,000	282,499,000	(467,410,000)
Dividends on preferred stock									0	0	0
Accretion on preferred stock									0	0	0
Gain (Loss) On Redemption Of Preferred Stock									0	0	0
Net Income (Loss) Attributable to Common Shareholders									580,634,000	282,499,000	(467,410,000)
Reportable Legal Entities [Member] | Combined Non-Guarantor Subsidiaries [Member]
Total revenues									0	0	0
Costs and Expenses									0	0	0
Income (loss) from continuing operations before income taxes									0	0	0
Income tax expense									0	0	0
Equity in income of subsidiaries									0	0	0
Net Income (Loss)									0	0	0
Dividends on preferred stock									0	0	0
Accretion on preferred stock									0	0	0
Gain (Loss) On Redemption Of Preferred Stock									0	0	0
Net Income (Loss) Attributable to Common Shareholders									0	0	0
Consolidation, Eliminations [Member]
Total revenues									0	0	0
Costs and Expenses									(37,000)	(37,000)	492,000
Income (loss) from continuing operations before income taxes									37,000	37,000	(492,000)
Income tax expense									0	0	0
Equity in income of subsidiaries									(580,634,000)	(282,499,000)	467,410,000
Net Income (Loss)									(580,597,000)	(282,462,000)	466,918,000
Dividends on preferred stock									0	0	0
Accretion on preferred stock									0	0	0
Gain (Loss) On Redemption Of Preferred Stock									0	0	0
Net Income (Loss) Attributable to Common Shareholders									$ (580,597,000)	$ (282,462,000)	$ 466,918,000

XML

Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net Cash Provided by (Used in) Operating Activities	$ 653,555	$ 422,981	$ 272,768
Net Cash Provided by (Used in) Investing Activities	(795,968)	(1,159,452)	(619,832)
Net Cash Provided by (Used in) Financing Activities	135,155	741,817	308,340
Net decrease in cash and cash equivalents	(7,258)	5,346	(38,724)
Cash and cash equivalents, beginning of year	9,540	4,194	42,918
Cash and cash equivalents, end of year	2,282	9,540	4,194
Cash and cash equivalents	2,282	9,540	4,194	$ 42,918
Reportable Legal Entities [Member] | Parent Company [Member]
Net Cash Provided by (Used in) Operating Activities	(269,318)	(121,107)	(34,773)
Net Cash Provided by (Used in) Investing Activities	126,905	(615,364)	(312,291)
Net Cash Provided by (Used in) Financing Activities	135,155	741,817	308,340
Net decrease in cash and cash equivalents	(7,258)	5,346	(38,724)
Cash and cash equivalents, beginning of year	9,540	4,194	42,918
Cash and cash equivalents, end of year	2,282	9,540	4,194
Cash and cash equivalents		9,540	4,194
Reportable Legal Entities [Member] | Combined Guarantor Subsidiaries [Member]
Net Cash Provided by (Used in) Operating Activities	922,873	544,088	307,541
Net Cash Provided by (Used in) Investing Activities	(792,383)	(1,155,340)	(575,824)
Net Cash Provided by (Used in) Financing Activities	(130,490)	611,252	268,283
Net decrease in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of year	0	0	0
Cash and cash equivalents, end of year	0	0	0
Cash and cash equivalents		0	0
Reportable Legal Entities [Member] | Combined Non-Guarantor Subsidiaries [Member]
Net Cash Provided by (Used in) Operating Activities	0	0	0
Net Cash Provided by (Used in) Investing Activities	0	0	(740)
Net Cash Provided by (Used in) Financing Activities	0	0	740
Net decrease in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of year	0	0	0
Cash and cash equivalents, end of year	0	0	0
Cash and cash equivalents		0	0
Consolidation, Eliminations [Member]
Net Cash Provided by (Used in) Operating Activities	0	0	0
Net Cash Provided by (Used in) Investing Activities	(130,490)	611,252	269,023
Net Cash Provided by (Used in) Financing Activities	130,490	(611,252)	(269,023)
Net decrease in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of year	0	0	0
Cash and cash equivalents, end of year	$ 0	0	0
Cash and cash equivalents		$ 0	$ 0

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Supplemental Cash Flow Information Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental Cash Flow Information [Line Items]
Cash paid for interest, net of amounts capitalized	$ 59,846	$ 77,213	$ 75,231
Cash paid for income taxes	0	0	0
Change in capital expenditure payables and accruals	(53,722)	102,272	(21,492)
Contingent Consideration, Liability, Acquisition Date Fair Value	(7,880)	(8,805)	0
Contingent Consideration, Asset, Divestiture Date Fair Value	0	52,300	0
Share-based Compensation, Capitalized Amount	4,124	4,482	4,591
Asset retirement obligation additions	2,132	3,726	1,927
Non cash (Gain) Loss on Extinguishment of Debt	3,586	1,357	0
Sanchez Acquisition [Member]
Supplemental Cash Flow Information [Line Items]
Business Combination, Liabilities	$ 0	$ 0	$ 4,880

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Subsequent Events (Unaudited) (Narrative) (Details) - Subsequent Event $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Subsequent Event [Line Items]
Payment for Contingent Consideration Liability, Financing Activities	$ (50.0)
Receipt for Contingent Consideration Asset, Financing Activities	$ 10.0

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Subsequent Events (Unaudited) (Schedule of Crude Oil Derivative Instruments) (Details) - Subsequent Event [Member] - 2020 [Member] - Crude Oil [Member]	Feb. 15, 2019 bbl / d $ / bbls	Jan. 31, 2019 bbl / d $ / bbls
Three-way Collars [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d	6,000
Derivative Average Sub Floor Price	45.00
Weighted Average Floor Price ($/Bbl)	55.00
Weighted Average Ceiling Price ($/Bbl)	64.69
Basis Swap [Member]
Derivative [Line Items]
Derivative, Volumes | bbl / d		3,000
Derivative, Swap Type, Average Fixed Price		55.06

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Supplemental Disclosures About Oil and Gas Producing Activities (Narrative) (Details) MBoe in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) MBoe	Dec. 31, 2017 USD ($) MBoe	Dec. 31, 2016 USD ($) MBoe
Supplemental Oil And Gas Reserve Information [Line Items]
Capitalized interest | $	$ 36,600	$ 28,300	$ 17,000
Asset retirement obligation additions | $	2,132	3,726	1,927
Internal costs capitalized, oil and gas producing activities | $	$ 17,000	$ 14,800	$ 10,500
Reserves discount factor	10.00%
Proved Developed Reserves [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Extensions and discoveries, MBoe	12,687	6,473	6,525
Purchases of reserves in place, MBoe	4,498	26,009	4,978
Sale of Mineral in Place, MBoe	(13,465)	(22,249)
Proved Undeveloped Reserves [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Extensions and discoveries, MBoe	118,320	74,281	52,047
Purchases of reserves in place, MBoe		20,094	1,167
Sale of Mineral in Place, MBoe	(1,996)	(7,297)
Barrel of Oil Equivalent (Boe) [Domain]
Supplemental Oil And Gas Reserve Information [Line Items]
Extensions and discoveries, MBoe	131,007	80,754	58,572
Revisions of previous estimates, MBoe	(30,352)	(16,118)	(19,713)
Purchases of reserves in place, MBoe	4,498	46,103	6,145
Sale of Mineral in Place, MBoe	(15,461)	(29,546)
Price Reserve Revisions [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe	3,764	2,684	(6,705)
Removed Reserves Of Uneconomic Wells [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe			(3,228)
Revisions Due To Reduced Tail Reserves [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe			(3,477)
Performance Reserve Revisions [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe	(12,363)	(4,500)	(6,083)
Development Plan Revisions [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe	(21,753)	(14,302)	(6,925)
Eagle Ford Shale [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Percentage of reserve additions	30.00%	51.00%	79.00%
Eagle Ford Shale [Member] | Performance Reserve Revisions [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe	(14,907)
Delaware Basin [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Percentage of reserve additions	70.00%	48.00%	20.00%
Delaware Basin [Member] | Performance Reserve Revisions [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Revisions of previous estimates, MBoe	2,544
Property Acquisition Costs [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Asset retirement obligation additions | $	$ 200	$ 100	$ 2,037
Exploration and Development Costs [Member]
Supplemental Oil And Gas Reserve Information [Line Items]
Asset retirement obligation additions | $	$ 1,913	$ 3,527

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Supplemental Disclosures About Oil And Gas Producing Activities (Schedule Of Costs Incurred In Oil And Gas Property Acquisition, Exploration And Development Activities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Proved property acquisition costs	$ 47,370	$ 303,307	$ 90,661
Unproved properties	182,220	525,061	113,535
Total property acquisition costs	229,590	828,368	204,196
Exploration costs	48,570	91,098	37,508
Development costs	809,637	569,982	374,134
Total costs incurred	$ 1,087,797	$ 1,489,448	$ 615,838

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Supplemental Disclosures About Oil And Gas Producing Activities (Schedule Of Net Proved Oil And Gas Reserves And Changes In Net Proved Oil And Gas Reserves) (Details) MMcf in Thousands, MBoe in Thousands, MBbls in Thousands	12 Months Ended
	Dec. 31, 2018 MBoe MBbls MMcf	Dec. 31, 2017 MBoe MBbls MMcf	Dec. 31, 2016 MBoe MBbls MMcf	Dec. 31, 2015 MBoe MBbls MMcf
Crude Oil [Member]
Proved Developed and Undeveloped Reserves [Abstract]
Proved developed and undeveloped reserves beginning of year	167,374	128,318	109,588
Extensions and discoveries	65,352	50,476	40,074
Revisions of previous estimates	(31,287)	(19,838)	(16,731)
Purchases of reserves in place	2,205	21,634	4,810
Sales of Minerals in Place	(9,676)	(650)
Production	(14,232)	(12,566)	(9,423)
Proved developed and undeveloped reserves end of year	179,736	167,374	128,318
Proved developed reserves (volume)	75,267	69,632	51,062	42,311
Proved undeveloped reserve (volume)	104,469	97,742	77,256	67,277
Natural Gas Liquids (Bbls) [Member]
Proved Developed and Undeveloped Reserves [Abstract]
Proved developed and undeveloped reserves beginning of year	42,598	23,937	20,221
Extensions and discoveries	30,195	13,781	8,612
Revisions of previous estimates	1,936	(909)	(3,230)
Purchases of reserves in place	967	8,642	122
Sales of Minerals in Place	(2,872)	(526)
Production	(3,701)	(2,327)	(1,788)
Proved developed and undeveloped reserves end of year	69,123	42,598	23,937
Proved developed reserves (volume)	25,809	17,447	9,387	7,933
Proved undeveloped reserve (volume)	43,314	25,151	14,550	12,288
Natural Gas [Member]
Proved Developed and Undeveloped Reserves [Abstract]
Proved developed and undeveloped reserves beginning of year | MMcf	310,470	287,445	244,938
Extensions and discoveries | MMcf	212,758	98,980	59,318
Revisions of previous estimates | MMcf	(6,006)	27,774	1,481
Purchases of reserves in place | MMcf	7,953	94,962	7,282
Sales of Minerals in Place | MMcf	(17,475)	(170,219)
Production | MMcf	(24,639)	(28,472)	(25,574)
Proved developed and undeveloped reserves end of year | MMcf	483,061	310,470	287,445
Proved developed reserves (volume) | MMcf	178,941	131,355	187,054	154,725
Proved undeveloped reserve (volume) | MMcf	304,120	179,115	100,391	90,213
Barrel of Oil Equivalent (Boe) [Domain]
Proved Developed and Undeveloped Reserves [Abstract]
Proved developed and undeveloped reserves beginning of year, Boe | MBoe	261,717	200,163	170,632
Extensions and discoveries, MBoe | MBoe	131,007	80,754	58,572
Revisions of previous estimates, MBoe | MBoe	(30,352)	(16,118)	(19,713)
Purchases of reserves in place, MBoe | MBoe	4,498	46,103	6,145
Sale of Mineral in Place, MBoe | MBoe	(15,461)	(29,546)
Production, Boe | MBoe	(22,040)	(19,639)	(15,473)
Proved developed and undeveloped reserves end of year, Boe | MBoe	329,369	261,717	200,163
Proved developed reserves (energy) | MBoe	130,899	108,972	91,625	76,032
Proved undeveloped reserves (energy) | MBoe	198,470	152,745	108,538	94,600

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Supplemental Disclosures About Oil And Gas Producing Activities (Schedule Of Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future cash inflows	$ 14,461,143	$ 10,109,752	$ 5,903,629
Future production costs	(4,572,397)	(3,202,201)	(2,241,928)
Future development costs	(1,964,450)	(1,699,909)	(1,264,493)
Future income taxes (1)	(1,005,837)	(445,056)	0
Future net cash flows	6,918,459	4,762,586	2,397,208
Less 10% annual discount to reflect timing of cash flows	(3,282,901)	(2,297,544)	(1,093,779)
Standardized measure of discounted future net cash flows	$ 3,635,558	$ 2,465,042	$ 1,303,429	$ 1,365,224

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Supplemental Disclosures About Oil And Gas Producing Activities (Schedule of Average Price of Reserve Estimates) (Details)	12 Months Ended
	Dec. 31, 2018 $ / bbls $ / MMcf	Dec. 31, 2017 $ / bbls $ / MMcf	Dec. 31, 2016 $ / bbls $ / MMcf
Crude Oil [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Reserves Estimates Average Sales Price	63.80	49.87	39.60
Natural Gas Liquids (Bbls) [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Reserves Estimates Average Sales Price	26.15	19.78	11.66
Natural Gas (Mcf) [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Reserves Estimates Average Sales Price | $ / MMcf	2.46	2.96	1.89

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Supplemental Disclosures About Oil And Gas Producing Activities (Schedule Of Changes In Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward]
Standardized measure — beginning of period	$ 2,465,042	$ 1,303,429	$ 1,365,224
Net change in sales prices and production costs related to future production	809,182	710,773	(346,763)
Net change in estimated future development costs	(9,627)	(51,854)	74,407
Net change due to revisions in quantity estimates	(250,817)	(42,214)	(150,245)
Accretion of discount	263,837	130,343	136,522
Changes in production rates (timing) and other	(19,539)	(116,056)	(111,137)
Total revisions to reserves proved in prior years	793,036	630,992	(397,216)
Net change due to extensions and discoveries, net of estimated future development and production costs	1,127,748	597,502	313,201
Net change due to purchases of reserves in place	60,264	452,932	43,426
Net change due to divestitures of reserves in place	(181,308)	(106,608)	0
Sales of crude oil, NGLs and natural gas produced, net of production costs	(843,333)	(566,258)	(320,272)
Previously estimated development costs incurred	496,600	326,383	299,066
Net change in income taxes	(282,491)	(173,330)	0
Net change in standardized measure of discounted future net cash flows	1,170,516	1,161,613	(61,795)
Standardized measure — end of period	$ 3,635,558	$ 2,465,042	$ 1,303,429

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Selected Quarterly Financial Data (Narrative) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 19, 2018	Jan. 24, 2018
Quarterly Financial Information [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ 159,407,000	$ (55,388,000)	$ (67,714,000)	$ (29,596,000)	$ (86,107,000)	$ (24,377,000)	$ 26,065,000	$ 25,316,000	$ 6,709,000	$ (59,103,000)	$ (49,073,000)
Dividends on preferred stock									18,161,000	7,781,000	0
Gain (Loss) On Redemption Of Preferred Stock				7,100,000					(7,133,000)	0	0
Preferred Stock Shares Redeemed													50,000
Loss on extinguishment of debt				(8,700,000)	4,170,000				9,586,000	4,170,000	0
Impairment of proved oil and gas properties									0	0	$ 576,540,000
7.50% Senior Notes [Member]
Quarterly Financial Information [Line Items]
Loss on extinguishment of debt									$ 9,586,000	4,170,000
Debt Instrument, Repurchased Face Amount				$ 320,000,000	$ 150,000,000					$ 150,000,000		$ 130,000,000
Debt instrument interest rate	7.50%								7.50%

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Selected Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 273,314	$ 303,375	$ 263,973	$ 225,280	$ 246,771	$ 181,279	$ 166,483	$ 151,355	$ 1,065,942	$ 745,888	$ 443,594
Operating profit (loss)	129,405	165,141	140,265	108,992	113,205	69,364	63,147	57,953
Net income (loss)	260,280	81,346	35,309	27,492	(17,040)	7,823	56,306	40,021	404,427	87,110	(675,474)
Net Income (Loss) Attributable to Common Shareholders	$ 255,120	$ 76,118	$ 30,095	$ 14,743	$ (23,434)	$ 5,574	$ 56,306	$ 40,021	$ 376,076	$ 78,467	$ (675,474)
Net Income (Loss) Attributable to Common Shareholders, Per Basic Share	$ 2.79	$ 0.88	$ 0.37	$ 0.18	$ (0.29)	$ 0.07	$ 0.86	$ 0.61	$ 4.40	$ 1.07	$ (11.27)
Net Income (Loss) Attributable to Common Shareholders, Per Diluted Share	$ 2.75	$ 0.85	$ 0.36	$ 0.18	$ (0.29)	$ 0.07	$ 0.85	$ 0.61	$ 4.32	$ 1.06	$ (11.27)