EX-2.1

Agreement and Plan of Merger, dated as of April 29, 2013 (this “Agreement”), among Contango Oil & Gas Company, a Delaware corporation (“Parent”), Contango Acquisition, Inc., a Delaware corporation and a direct wholly-owned subsidiary of Parent (“Merger Sub”), and Crimson Exploration Inc., a Delaware corporation (the “Company” and, collectively with Parent and Merger Sub, the “Parties”).

WHEREAS, the respective Boards of Directors of Parent and Merger Sub have approved this Agreement, and have determined that it is advisable and in the best interests of their respective companies and their stockholders to consummate the strategic business combination transaction provided for in this Agreement, and the Parent Board has determined to recommend to the stockholders of Parent that they approve the issuance of shares of common stock, par value $0.04 per share, of Parent (the “Parent Common Stock”) in connection with the strategic business combination transaction provided for in this Agreement (the “Parent Share Issuance”); and

WHEREAS, the Company Board has adopted this Agreement, and has determined that it is advisable and in the best interests of the Company and its stockholders to consummate the strategic business combination transaction provided for in this Agreement and has determined to recommend to the stockholders of the Company that they adopt this Agreement and the combination of the Company and Parent, which shall be effected by, and subject to, the terms of this Agreement through the Merger; and

WHEREAS, for federal income tax purposes, the Parties intend that the Merger will qualify as a reorganization described in Section 368(a) of the Code and that this Agreement shall constitute a “plan of reorganization” for the purposes of Sections 354 and 361 of the Code; and

WHEREAS, in connection with the execution and delivery of this Agreement by the Parties, certain stockholders of the Company have entered into a Support Agreement (each, a “Company Support Agreement”) dated as of the date of this Agreement with Parent and Merger Sub, pursuant to which each of the Applicable Company Stockholders has agreed, among other things, to vote all of the Company Common Stock beneficially owned by it in favor of the adoption of this Agreement, the Merger and the other transactions contemplated by this Agreement, on the terms and subject to the conditions set forth in such Company Support Agreement; and

WHEREAS, in connection with the execution and delivery of this Agreement by the Parties, certain stockholders of Parent have entered into a Support Agreement (each, a “Parent Support Agreement”) dated as of the date of this Agreement with the Company, pursuant to which each of the Applicable Parent Stockholders has agreed, among other things, to vote all of the Parent Common Stock beneficially owned by it in favor of approval of the Parent Share Issuance, on the terms and subject to the conditions set forth in such Parent Support Agreement; and

WHEREAS, in connection with the execution and delivery of this Agreement by the Parties, Parent, on the one hand, and OCM GW Holdings, LLC, a Delaware limited liability company, and OCM Crimson Holdings, LLC, a Delaware limited liability company (collectively, the “Oaktree Investors”), on the other hand, have entered into a registration rights agreement dated as of the date of this Agreement (the “Registration Rights Agreement”), pursuant to which, among other things, Parent agreed, subject to the occurrence of the Closing, to grant to the Oaktree Investors certain registration rights with respect to shares of Parent Common Stock acquired by the Oaktree Investors upon the consummation of the Merger.

NOW, THEREFORE, in consideration of the foregoing and the respective representations, warranties, covenants and agreements set forth in this Agreement, and intending to be legally bound hereby, the Parties agree as follows:

Section 1.1 The Merger. Upon the terms and subject to the conditions set forth in this Agreement, and in accordance with the General Corporation Law of the State of Delaware (the “DGCL”), Merger Sub shall be merged with and into the Company at the Effective Time (the “Merger”). Following the Merger, the separate corporate existence of Merger Sub shall cease and the Company shall continue as the surviving corporation (the “Surviving Corporation”).

Section 1.2 Closing. Upon the terms and subject to the conditions set forth in this Agreement, the closing of the Merger (the “Closing”) will take place at 10:00 a.m. Central time on the date that is no later than the next Business Day following the satisfaction or (subject to applicable Law) waiver of the conditions set forth in Article VII (excluding conditions that, by their nature, cannot be satisfied until the Closing Date, but subject to the fulfillment or waiver of those conditions), unless another time or date is agreed to in writing by the Parties (the actual time and date of the Closing being referred to herein as the “Closing Date”). The Closing shall be held at the offices of Morgan, Lewis & Bockius LLP, 1000 Louisiana Street, Suite 4000, Houston, Texas 77002, or at such other place as the Parties may agree.

Section 1.3 Effective Time. As soon as practicable on the Closing Date, the Company shall (a) file a certificate of merger (the “Certificate of Merger”) in such form as is required by, and executed and acknowledged in accordance with, the relevant provisions of the DGCL and (b) make all other filings or recordings required under the DGCL in connection with the Merger. The Merger shall become effective at such time as the Certificate of Merger is duly filed with the Delaware Secretary of State or at such subsequent time as Parent and the Company may agree and as shall be specified in the Certificate of Merger (the date and time the Merger becomes effective being the “Effective Time”).

Section 1.4 Effects of the Merger. At and after the Effective Time, the Merger will have the effects set forth herein and in the DGCL. Without limiting the generality of the foregoing, and subject thereto, at the Effective Time all the property, rights, privileges, immunities, powers and franchises of the Company and Merger Sub shall be vested in the Surviving Corporation, and all debts, liabilities and duties of the Company and Merger Sub shall become the debts, liabilities and duties of the Surviving Corporation.

Section 1.5 Bylaws. The bylaws of Merger Sub, as in effect immediately prior to the Effective Time, shall be the bylaws of the Surviving Corporation and shall read in their entirety as set forth in Exhibit A hereto until thereafter changed or amended as provided therein or by applicable Law (subject to Section 6.7(b)).

Section 1.6 Certificate of Incorporation. At the Effective Time, the certificate of incorporation of the Company shall be amended so as to read in its entirety as set forth in Exhibit B hereto and, as so amended, shall be the certificate of incorporation of the Surviving Corporation until thereafter amended in accordance with its terms and as provided by applicable Law (subject to Section 6.7(b)).

Section 1.7 Officers and Directors. From and after the Effective Time, until their successors are duly elected or appointed and qualified in accordance with applicable Law, (a) the directors of Merger Sub immediately prior to the Effective Time shall be the directors of the Surviving Corporation until their successors have been duly elected or appointed and qualified, or their earlier death, resignation or removal and (b) the officers of the Company immediately prior to the Effective Time shall be the officers of the Surviving Corporation until their successors have been duly elected or appointed and qualified, or their earlier death, resignation or removal.

(a) At the Effective Time, by virtue of the Merger and without any action on the part of the holder thereof, each share of common stock, no par value per share, of Merger Sub issued and outstanding immediately prior to the Effective Time, shall be converted into one validly issued, fully paid and non-assessable share of common stock, par value $0.001 per share, of the Surviving Corporation.

(b) At the Effective Time, by virtue of the Merger and without any action on the part of the holder thereof, each share of common stock, par value $0.001 per share, of the Company (“Company Common Stock”) issued and outstanding immediately prior to the Effective Time (including any Company Restricted Stock which has become vested and converted into unrestricted Company Common Stock pursuant to Section 1.9(b), but excluding any shares of Company Common Stock owned directly or indirectly by Parent or held directly or indirectly by the Company, all of which shall be canceled as provided in Section 1.8(d)), shall be converted into the right to receive 0.08288 (such fraction of a share of Parent Common Stock as the same may be adjusted in accordance with Section 1.10 is referred to as the “Exchange Ratio”) validly issued, fully paid and non-assessable shares of Parent Common Stock (the “Merger Consideration”).

(c) As a result of the Merger and without any action on the part of the holders thereof, at the Effective Time, all shares of outstanding Company Common Stock shall cease to be outstanding and shall be canceled and retired and shall cease to exist, and each holder of a certificate or certificates which immediately prior to the Effective Time represented any such

shares of Company Common Stock (the “Certificates”) or book-entry shares which immediately prior to the Effective Time represented shares of Company Common Stock (the “Book-Entry Shares”) shall thereafter cease to have any rights with respect to such shares of Company Common Stock except as provided herein or by Law.

(d) Each share of Company Common Stock owned by Parent, Merger Sub or any of their Subsidiaries or held by the Company or any of its Subsidiaries (including any shares held in the treasury of the Company) at the Effective Time shall, by virtue of the Merger, cease to be outstanding and shall be canceled and retired and no stock of Parent or other consideration shall be delivered in exchange therefor.

(a) By virtue of the Merger, each option to purchase shares of Company Common Stock under the applicable Company Stock Plans that is outstanding immediately prior to the Effective Time, whether or not then vested and exercisable (collectively, the “Company Stock Options”) shall cease to represent a right to acquire shares of Company Common Stock and shall be converted, at the Effective Time, into a fully vested and immediately exercisable option to purchase shares of Parent Common Stock (a “Parent Stock Option”), on the same terms and conditions as were applicable under such Company Stock Option (but taking into account any changes thereto, including the acceleration thereof, provided for in the Company Stock Plans, in an award agreement or in such Company Stock Option by reason of this Agreement or the transactions contemplated herein), except that: (i) each Parent Stock Option shall have an exercise price per share of Parent Common Stock equal to the exercise price per share of Company Common Stock for such Company Stock Option immediately prior to the Effective Time divided by the Exchange Ratio, rounded, if necessary, up to the nearest whole cent; and (ii) the number of shares of Parent Common Stock which shall be subject to each such Parent Stock Option shall be the number of shares of Company Common Stock subject to each Company Stock Option immediately prior to the Effective Time, multiplied by the Exchange Ratio, rounded, if necessary, down to the nearest whole share of Parent Common Stock; provided, however, that notwithstanding anything to the contrary in this Agreement, in all cases such conversion shall be effected in a manner consistent with the requirements of Section 424(a) of the Code (as modified by Section 409A of the Code with respect to Company Stock Options that are not intended to qualify as “incentive stock options” within the meaning of Section 422 of the Code).

(b) Effective immediately prior to the Effective Time, each restricted share of Company Common Stock granted to any employee or director of the Company, any of its Subsidiaries or any of its predecessors under any Company Stock Plan that is outstanding immediately prior to the Effective Time (collectively, the “Company Restricted Stock”) shall, by virtue of the Merger and without any action on the part of the holder thereof, become a fully vested and unrestricted share of Company Common Stock immediately prior to the Effective Time.

(c) Prior to the Effective Time, the Parent Board (or the appropriate committee thereof) and the Company Board (or the appropriate committee thereof) shall take such action and adopt such resolutions as are required to effectuate the treatment of the Company

Stock Options pursuant to the terms of Section 1.9(a) of this Agreement, and to take all actions reasonably required to effectuate any provision of this Section 1.9, including (i) the Parent Board (or the appropriate committee thereof) shall take all corporate action necessary or advisable to assume and continue the Company Stock Plans subject to any amendment or termination in accordance with the terms of such plans; (ii) the Parent Board (or the appropriate committee thereof) shall take all corporate action necessary or advisable to reserve for issuance a sufficient number of shares of Parent Common Stock for delivery upon exercise of a Parent Stock Option; and (iii) the Company Board (or the appropriate committee thereof) shall take all corporate action necessary or advisable to ensure that after the Effective Time, neither the Company nor the Surviving Corporation will be required to deliver shares of Company Common Stock or any other capital stock to any person pursuant to or in settlement of Company Stock Options.

(d) As soon as practicable following the Effective Time, Parent shall file a Form S-8 registration statement (or such other appropriate form), or a post-effective amendment to a registration statement previously filed under the Securities Act, with respect to the shares of Parent Common Stock available for grant and delivery under the Company Stock Plans from and after the Effective Time and shall use its commercially reasonable efforts to maintain the effectiveness of such registration statement (and maintain the current status of the prospectus contained therein) for so long as such shares are available for grant and delivery under the Company Stock Plans. As soon as practicable following the Effective Time, the Company shall file a post-effective amendment to the Form S-8 registration statement originally filed by the Company on June 25, 2008, deregistering all shares of Company Common Stock thereunder.

Section 1.10 Certain Adjustments. If, between the date of this Agreement and the Effective Time, the outstanding shares of Parent Common Stock or Company Common Stock are changed into a different number of shares or different class by reason of any reclassification, recapitalization, stock split, split-up, combination or exchange of shares or a stock dividend or dividend payable in any other securities shall be declared with a record date within such period, or any similar event shall have occurred, the Exchange Ratio shall be appropriately adjusted to proportionally reflect such changes.

Section 1.11 Tax Consequences. For federal income tax purposes, the Merger is intended to constitute a reorganization within the meaning of Section 368(a) of the Code. The Parties hereby adopt this Agreement as a “plan of reorganization” within the meaning of Sections 1.368-2(g) and 1.368-3(a) of the United States Treasury Regulations.

Section 2.1 Exchange Agent. Prior to the Effective Time, Parent shall appoint a commercial bank or trust company to act as exchange agent hereunder (which entity shall be reasonably acceptable to the Company) for the purpose of exchanging Certificates and Book-Entry Shares for the Merger Consideration (the “Exchange Agent”). At or prior to the Effective Time, Parent shall deposit with the Exchange Agent, in trust for the benefit of holders of shares of Company Common Stock, Book-Entry Shares (or certificates if requested) representing the Parent Common Stock issuable, pursuant to Section 1.8 in exchange for outstanding shares of

Company Common Stock (including Company Restricted Stock). Parent agrees to make available directly or indirectly to the Exchange Agent from time to time as needed, any cash in lieu of fractional shares of Parent Common Stock to be issued or paid in consideration therefor pursuant to Section 2.5 and any dividends or distributions to which such holder is entitled pursuant to Section 2.3. Any cash and shares of Parent Common Stock deposited with the Exchange Agent shall hereinafter be referred to as the “Exchange Fund.”

(a) Promptly after the Effective Time, and in any event not later than the third Business Day following the Effective Time, the Surviving Corporation shall cause the Exchange Agent to mail to each holder of record of a Certificate (i) a letter of transmittal which shall specify that delivery shall be effected, and risk of loss and title to the Certificates shall pass, only upon proper delivery of the Certificates to the Exchange Agent, and which letter shall be in customary form and have such other provisions as Parent may reasonably specify (such letter to be reasonably acceptable to the Company prior to the Effective Time) and (ii) instructions for effecting the surrender of such Certificates (or effective affidavits of loss in lieu thereof) in exchange for the Merger Consideration, any cash in lieu of fractional shares of Parent Common Stock to be issued or paid in consideration therefor pursuant to Section 2.5 and any dividends or distributions to which such holder is entitled pursuant to Section 2.3. Upon surrender of a Certificate to the Exchange Agent together with such letter of transmittal, duly executed and completed in accordance with the instructions thereto, and such other documents as may reasonably be required by the Exchange Agent, the holder of such Certificate shall be entitled to receive in exchange therefor (A) one or more shares of Parent Common Stock (which shall be in uncertificated book-entry form unless a physical certificate is requested) representing, in the aggregate, the whole number of shares that such holder has the right to receive pursuant to Section 1.8 (after taking into account all shares of Company Common Stock then held by such holder) and (B) cash in the amount equal to cash that such holder has the right to receive in lieu of any fractional shares of Parent Common Stock pursuant to Section 2.5 and dividends and other distributions pursuant to Section 2.3 (in each case, after taking into account all shares of Company Common Stock then held by such holder).

Notwithstanding anything contained in this Agreement to the contrary, no holders of Book-Entry Shares shall be required to deliver a Certificate or an executed letter of transmittal to the Exchange Agent to receive the Merger Consideration that such holder is entitled to receive pursuant to this Agreement.

(b) No interest will be paid or will accrue on any cash payable pursuant to Section 2.3 or Section 2.5.

(c) In the event of a transfer of ownership of a Certificate representing Company Common Stock that is not registered in the stock transfer records of the Company, the Merger Consideration shall be issued or paid in exchange therefor to a Person other than the Person in whose name the Certificate so surrendered is registered if the Certificate formerly representing such Company Common Stock is properly endorsed or otherwise in proper form for transfer and the Person requesting such payment or issuance pays any transfer or other similar Taxes required by reason of the payment or issuance to a Person other than the registered holder of the Certificate or establish to the satisfaction of Parent that the Tax has been paid or is not applicable.

Section 2.3 Distributions with Respect to Unexchanged Shares. All shares of Parent Common Stock to be issued pursuant to this Agreement shall be deemed issued and outstanding as of the Effective Time and whenever a dividend or other distribution is declared by Parent in respect of the Parent Common Stock, the record date for which is at or after the Effective Time, that declaration shall include dividends or other distributions in respect of all shares issuable pursuant to this Agreement; provided, however, that no dividends or other distributions declared or made in respect of the Parent Common Stock shall be paid to the holder of any unsurrendered Certificate until the holder of such Certificate surrenders such Certificate in accordance with this Article II. Subject to the effect of applicable Laws, following surrender of any such Certificate, there shall be paid to such holder of shares of Parent Common Stock issuable in exchange therefor, without interest, (a) promptly after the time of such surrender, the amount of any cash payable in lieu of fractional shares of Parent Common Stock to which such holder is entitled pursuant to Section 2.5 and the amount of dividends or other distributions with a record date after the Effective Time theretofore paid with respect to such whole shares of Parent Common Stock; and (b) at the appropriate payment date, the amount of dividends or other distributions with a record date at or after the Effective Time but prior to such surrender and a payment date subsequent to such surrender payable with respect to such shares of Parent Common Stock.

Section 2.4 No Further Ownership Rights. All shares of Parent Common Stock issued and cash paid upon the conversion of shares of Company Common Stock in accordance with the terms of Article I and this Article II (including any cash paid pursuant to Section 2.3 or Section 2.5) shall be deemed to have been issued or paid in full satisfaction of all rights pertaining to the shares of Company Common Stock (other than any rights with respect to any unpaid dividends with respect to Company Common Stock that were declared prior to the Effective Time with a record date prior to the Effective Time and a payment date after the Effective Time).

(a) No certificates or scrip or shares of Parent Common Stock representing fractional shares of Parent Common Stock or book-entry credit of the same shall be issued upon the surrender for exchange of Certificates, and such fractional share interests shall not entitle the owner thereof to vote or to have any rights of a stockholder of Parent or a holder of shares of Parent Common Stock.

(b) Notwithstanding anything contained in this Agreement to the contrary, each holder of shares of Company Common Stock exchanged pursuant to the Merger who would otherwise have been entitled to receive a fraction of a share of Parent Common Stock (after taking into account all Certificates delivered by such holder) shall receive, in lieu thereof, cash (without interest) in an amount equal to the product of (i) such fractional part of a share of Parent Common Stock multiplied by (ii) the Parent Share Cash Value.

(c) As promptly as practicable after the determination of the amount of cash, if any, to be paid to holders of fractional interests, the Exchange Agent shall so notify Parent, and

Parent shall promptly deposit or cause the Surviving Corporation to deposit such amount with the Exchange Agent and shall cause the Exchange Agent to forward payments to such holders of fractional interests subject to and in accordance with the terms hereof.

Section 2.6 Termination of Exchange Fund. Any portion of the Exchange Fund which remains undistributed to the holders of shares of Company Common Stock for 12 months after the Effective Time shall be delivered to Parent or otherwise on the instruction of Parent, and any holders of shares of Company Common Stock who have not theretofore complied with this Article II shall thereafter look only to Parent for, and Parent shall remain liable for, the Merger Consideration to which such holders are entitled pursuant to Section 1.8 and Section 2.2, and any cash in lieu of fractional shares of Parent Common Stock to which such holders are entitled pursuant to Section 2.5 and any dividends or distributions with respect to shares of Parent Common Stock to which such holders are entitled pursuant to Section 2.3. Any such portion of the Exchange Fund remaining unclaimed by holders of shares of Company Common Stock five years after the Effective Time (or such earlier date immediately prior to such time as such amounts would otherwise escheat to or become property of any Governmental Entity) shall, to the extent permitted by Law, become the property of the Surviving Corporation free and clear of any claims or interest of any Person previously entitled thereto.

Section 2.7 No Liability. None of Parent, Merger Sub, the Company, the Surviving Corporation or the Exchange Agent shall be liable to any Person in respect of any Merger Consideration from the Exchange Fund delivered to a public official pursuant to any applicable abandoned property, escheat or similar Law.

Section 2.8 Investment of the Exchange Fund. The Exchange Agent shall invest any cash included in the Exchange Fund as directed by Parent on a daily basis in (a) short term direct obligations of the United States of America with maturities of no more than 30 days, (b) short term obligations for which the full faith and credit of the United States of America is pledged to provide for payment of all principal and interest or (c) commercial paper obligations receiving the highest rating from either Moody’s Investor Services, Inc. or Standard & Poor’s; provided, however, that no gain or loss thereon shall affect the amounts payable to the Company stockholders pursuant to Article I and the other provisions of this Article II. If for any reason (including losses) the cash in the Exchange Fund will be insufficient to fully satisfy all of the payment obligations to be made in cash by the Exchange Agent hereunder, Parent shall promptly deposit cash into the Exchange Fund in an amount equal to the deficiency in the amount of cash required to fully satisfy such cash payment obligations. Any interest and other income resulting from such investments shall promptly be paid to Parent.

Section 2.9 Lost Certificates. If any Certificate has been lost, stolen or destroyed, upon the making of an affidavit of that fact by the Person claiming such Certificate to be lost, stolen or destroyed and, if required by the Surviving Corporation, the posting by such Person of a bond in such reasonable amount as the Surviving Corporation may direct as indemnity against any claim that may be made against it with respect to such Certificate, the Exchange Agent shall deliver in exchange for such lost, stolen or destroyed Certificate the Merger Consideration with respect to the shares of Company Common Stock formerly represented thereby, any cash in lieu of fractional shares of Parent Common Stock to which such holders are entitled pursuant to Section 2.5 and unpaid dividends and distributions on shares of Parent Common Stock to which such holders are entitled pursuant to Section 2.3, as the case may be, deliverable in respect thereof, pursuant to this Agreement.

Section 2.10 Withholding Rights. Each of the Surviving Corporation, Parent and the Exchange Agent shall be entitled to deduct and withhold from the consideration otherwise payable pursuant to this Agreement to any holder of shares of Company Common Stock, Company Stock Options, Company Restricted Stock or any other Equity Interests in the Company such amounts as it is required to deduct and withhold with respect to the making of such payment under the Code and the rules and regulations promulgated thereunder, or any provision of state, local or foreign Tax Law. To the extent that amounts are so withheld by the Surviving Corporation, Parent or the Exchange Agent, as the case may be, such withheld amounts shall be remitted to the applicable Governmental Entity and such amounts shall be treated for all purposes of this Agreement as having been paid to the holder of shares of Company Common Stock, Company Stock Options, Company Restricted Stock or other Equity Interests in the Company, as the case may be, in respect of which such deduction and withholding was made by the Surviving Corporation or Parent.

Section 2.11 Further Assurances. After the Effective Time, the officers and directors of the Surviving Corporation will be authorized to execute and deliver, in the name and on behalf of the Company or Merger Sub, any deeds, bills of sale, assignments or assurances and to take and do, in the name and on behalf of the Company or Merger Sub, any other actions and things to vest, perfect or confirm of record or otherwise in the Surviving Corporation any and all right, title and interest in, to and under any of the rights, properties or assets acquired or to be acquired by the Surviving Corporation as a result of, or in connection with, the Merger.

Section 2.12 Stock Transfer Books. The stock transfer books of the Company shall be closed at the close of business on the day on which the Effective Time occurs and there shall be no further registration of transfers of shares of Company Common Stock thereafter on the records of the Company. On or after the Effective Time, any Certificates presented to the Exchange Agent or Parent for any reason shall be converted into the Merger Consideration with respect to the shares of Company Common Stock or formerly represented thereby (including any cash in lieu of fractional shares of Parent Common Stock to which the holders thereof are entitled pursuant to Section 2.5) and any dividends or other distributions to which the holders thereof are entitled pursuant to Section 2.3.

Except (i) as disclosed in the Company SEC Documents filed since January 1, 2012 but prior to the date of this Agreement (but excluding any risk factor disclosures contained under the heading “Risk Factors” or “forward-looking statements”) or (ii) as set forth in the Company Disclosure Letter delivered by the Company to Parent prior to or concurrent with the execution of this Agreement (the “Company Disclosure Letter”), which identifies items of disclosure by reference to a particular section or subsection of this Agreement (provided, however, that any information set forth in one section of such Company Disclosure Letter also shall be deemed to apply to each other section and subsection of this Agreement to which its relevance is reasonably apparent), the Company hereby represents and warrants to Parent and Merger Sub as follows:

(a) Each of the Company and its Subsidiaries is a corporation duly organized, validly existing and in good standing (with respect to jurisdictions that recognize the concept of good standing) under the Laws of its respective jurisdiction of organization and has all requisite corporate or similar power and authority to own, lease and operate its properties and assets and to carry on its business as presently conducted, except with respect to the Company’s Subsidiaries, where the failure to be so organized, qualified or in good standing, or to have such power or authority when taken together with all other such failures, has not, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect. Each of the Company and its Subsidiaries is duly qualified or licensed to do business and is in good standing (with respect to jurisdictions that recognize the concept of good standing) as a foreign corporation in each jurisdiction where the ownership, leasing or operation of its assets or properties or conduct of its business requires such qualification, except where the failure to be so organized, qualified or in good standing, or to have such power or authority when taken together with all other such failures, has not, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(b) The Company has delivered or made available to Parent and Merger Sub a true and complete copy of the Company’s currently effective certificate of incorporation and bylaws, as amended and restated to the date of this Agreement. The Company’s certificate of incorporation and bylaws so delivered are in full force and effect and the Company is not in violation of its certificate of incorporation or bylaws.

(c) Section 3.1(c) of the Company Disclosure Letter lists, as of the date of this Agreement, (i) each Subsidiary of the Company and (ii) each Related Entity of the Company.

(a) As of the close of business on April 29, 2013 (the “Capitalization Date”), the authorized capital stock of the Company consisted of (i) 200,000,000 shares of Company Common Stock, par value $0.001 per share, of which 46,623,161 shares were outstanding (inclusive of 1,982,687 shares of unvested Company Restricted Stock granted pursuant to the Company Stock Plans) and 267,781 shares were held in the treasury of the Company and (ii) 10,000,000 shares of preferred stock of the Company, par value $0.01 per share (“Company Preferred Stock”), of which no shares were outstanding. There are no other classes of capital stock of the Company authorized or outstanding. All issued and outstanding shares of the capital stock of the Company are duly authorized, validly issued, fully paid and non-assessable, and no class of capital stock is entitled to preemptive rights.

(b) From the close of business on the Capitalization Date through the date of this Agreement, there have been no issuances of shares of the capital stock or equity securities of the Company or any other securities of the Company other than issuances of shares of Company Common Stock pursuant to the exercise of Company Stock Options outstanding as of the

Capitalization Date under the Company Stock Plans. There were outstanding as of the Capitalization Date, no options, warrants, calls, commitments, agreements, arrangements, undertakings or any other rights to acquire capital stock from the Company other than Company Stock Options as set forth in Section 3.2(b) of the Company Disclosure Letter. Section 3.2(b) of the Company Disclosure Letter sets forth a complete and correct list, as of the Capitalization Date, of the number of shares of Company Common Stock subject to Company Stock Options, Company Restricted Stock or any other rights to purchase or receive Company Common Stock granted under the Company Stock Plans or otherwise, the dates of grant, the extent to which such options are vested and, where applicable, the exercise prices thereof. Except as set forth in Section 3.2(b) of the Company Disclosure Letter, since the Capitalization Date through the date of this Agreement, the Company has not issued or awarded, or authorized the issuance or award of, any options, restricted stock or other equity-based awards under the Company Stock Plans or otherwise. Immediately prior to the Closing, the Company will have provided to Parent a complete and correct list, as of the Closing, of the number of shares of Company Common Stock subject to Company Stock Options, Company Restricted Stock or any other rights to purchase or receive Company Common Stock granted under the Company Stock Plans or otherwise, the dates of grant, the extent to which such options are vested and, where applicable, the exercise prices thereof. No options, warrants, restricted stock units, calls, commitments, agreements, arrangements, undertakings or other rights to acquire capital stock from the Company, or other equity-based awards, have been issued or granted on or after the Capitalization Date through the date of this Agreement.

(c) No bonds, debentures, notes or other Indebtedness of the Company having the right to vote (or convertible into or exercisable for securities having the right to vote) on any matters on which holders of capital stock of the Company may vote are issued or outstanding.

(d) Except as otherwise set forth in this Section 3.2 or in Section 3.2(d) of the Company Disclosure Letter, as of the date of this Agreement, (i) there are no outstanding obligations of the Company or any of its Subsidiaries to repurchase, redeem or otherwise acquire any shares of capital stock of the Company or any of its Subsidiaries except for purchases, redemptions or other acquisitions of capital stock or other securities (A) required by the terms of the Company Benefit Plans, (B) in order to pay Taxes or satisfy withholding obligations in respect of such Taxes in connection with the exercise of Company Stock Options or the vesting of Company Restricted Stock, or (C) as required by the terms of, or necessary for the administration of, any plans, arrangements or agreements existing on the date of this Agreement between the Company or any of its Subsidiaries and any director or employee of the Company or any of its Subsidiaries and (ii) there are no outstanding stock-appreciation rights, security-based performance units, shares of “phantom” stock or other security rights or other agreements, arrangements or commitments of any character (contingent or otherwise) pursuant to which any Person is or may be entitled to receive any payment or other value based on the stock price performance of the Company or any of its Subsidiaries (other than under the Company Stock Plans) or to cause the Company or any of its Subsidiaries to file a registration statement under the Securities Act of 1933, as amended (the “Securities Act”).

(e) Except as set forth in this Section 3.2 or in Section 3.2(e) of the Company Disclosure Letter, as of the date of this Agreement, there are no outstanding obligations of the Company or any of its Subsidiaries (i) restricting the transfer of, (ii) affecting the voting rights

of, (iii) requiring the sale, issuance, repurchase, redemption or disposition of, or containing any right of first refusal with respect to, (iv) requiring the registration for sale of or (v) granting any preemptive or antidilutive rights with respect to any shares of Company Common Stock, Company Preferred Stock or other Equity Interests in the Company or any of its Subsidiaries.

(f) Section 3.2(f) of the Company Disclosure Letter sets forth, as of the date of this Agreement, for each of the Company’s Subsidiaries, (i) its authorized capital stock or other Equity Interests, (ii) the number of its outstanding shares of capital stock or other Equity Interests and type(s) of such outstanding shares of capital stock or other Equity Interests and (iii) the record owner(s) thereof. The Company owns directly or indirectly, beneficially and of record, all of the issued and outstanding shares of capital stock or other Equity Interests of each of the Company’s Subsidiaries, free and clear of any Liens other than Permitted Liens, and all of such shares of capital stock or other Equity Interests have been duly authorized and validly issued and are fully paid, non-assessable and free of preemptive rights. Except for the ownership of Equity Interests in (A) the Company’s Subsidiaries and Related Entities and (B) investments in marketable securities and cash equivalents, none of the Company or any of its Subsidiaries owns directly or indirectly any Equity Interest in any Person, or has any obligation or has made any commitment to acquire any such Equity Interest, to provide funds to, or to make any investment (in the form of a loan, capital contribution or otherwise) in, any of its Subsidiaries or any other Person that is or would reasonably be expected to be material to the Company and its Subsidiaries, taken as a whole. No Subsidiary of the Company owns any Company Common Stock or other Equity Interest in the Company.

(a) The Company has all requisite corporate power and authority and has taken all corporate action necessary in order to execute, deliver and perform its obligations under this Agreement and to consummate the transactions contemplated hereby, subject, assuming the accuracy of the representations and warranties of Parent and Merger Sub set forth in Section 4.23, only to the adoption of this Agreement by the affirmative vote of the holders of a majority of the outstanding capital stock of the Company entitled to vote thereon (the “Company Stockholder Approval”), and to the filing and recording of the Certificate of Merger under the provisions of the DGCL. The Company Stockholder Approval is the only vote of the holders of any class or series of capital stock of the Company necessary to adopt, approve or authorize this Agreement, the Merger and the other transactions contemplated by this Agreement. This Agreement has been duly authorized and validly executed and delivered by the Company and, assuming due authorization, execution and delivery by Parent and Merger Sub, constitutes a legal, valid and binding obligation of the Company enforceable against the Company in accordance with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar Laws of general applicability relating to or affecting creditors’ rights and to general equity principles (the “Bankruptcy and Equity Exception”).

(b) As of the date of this Agreement, the Company Board, by resolution duly adopted at a meeting duly called and held, has (i) approved and declared advisable this Agreement and the Merger and the other transactions contemplated by this Agreement; (ii) resolved to recommend adoption of this Agreement to the stockholders of the Company; and (iii) directed that this Agreement be submitted to the stockholders of the Company for adoption.

(c) Assuming the accuracy of the representations and warranties of Parent and Merger Sub set forth in Section 4.23, no “fair price,” “moratorium,” “control share acquisition” or other similar anti-takeover statute or regulation (each, a “Takeover Statute”) or any anti-takeover provision in the Company’s certificate of incorporation and bylaws is, or at the Effective Time will be, applicable to the Company Common Stock, the Merger or the other transactions contemplated by this Agreement. Assuming the accuracy of the representations and warranties of Parent and Merger Sub set forth in Section 4.23, the Company Board has taken all action so that Parent will not be prohibited from entering into a “business combination” with the Company (as such term is used in Section 203 of the DGCL) as a result of the execution of this Agreement, or the consummation of the Merger or the other transactions contemplated hereby, without any further action on the part of the Company stockholders or the Company Board.

(a) Except for the reports, registrations, consents, approvals, permits, authorizations, notices and/or filings (i) pursuant to Section 1.3, (ii) under the Securities Act and the Securities Exchange Act of 1934, as amended (the “Exchange Act”), (iii) required to be made with the NASDAQ Stock Market (“NASDAQ”), (iv) for or pursuant to other applicable foreign securities Law approvals, state securities, takeover and “blue sky” Laws, and (v) as set forth in Section 3.4(a) of the Company Disclosure Letter, no notices, reports or other filings are required to be made by the Company with, nor are any registrations, consents, approvals, permits or authorizations required to be obtained by the Company from, any governmental or regulatory authority, agency, commission, body or other governmental entity (“Governmental Entity”), in connection with the execution and delivery of this Agreement by the Company and the consummation by the Company of the Merger and the other transactions contemplated by this Agreement, except those that the failure to make or obtain would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(b) None of the execution, delivery or performance of this Agreement by the Company, the consummation by the Company of the Merger or any other transaction contemplated by this Agreement, or the Company’s compliance with any of the provisions of this Agreement will (with or without notice or lapse of time, or both), (i) subject to obtaining the Company Stockholder Approval, conflict with or violate any provision of the Company’s certificate of incorporation or bylaws or any equivalent organizational or governing documents of any of the Company’s Subsidiaries; (ii) assuming that all consents, approvals, authorizations and permits described in this Section 3.4 have been obtained and all filings and notifications described in this Section 3.4 have been made and any waiting periods thereunder have terminated or expired, conflict with or violate any Law or Order applicable to the Company or any of its Subsidiaries or any of their respective properties or assets; or (iii) require any consent or approval under, violate, conflict with, result in any breach of or any loss of any benefit under, or constitute a default under, or result in termination or give to others any right of termination, vesting, amendment, acceleration or cancellation of, or result in the creation of a Lien, other than Permitted Liens, upon any of the respective properties or assets of the Company or any of its Subsidiaries pursuant to, any Contract, permit or other instrument or obligation to which the Company or any of its Subsidiaries is a party or by which they or any of their respective properties or assets may be bound or affected, except, with respect to clauses (ii) and (iii), for any such conflicts, violations, consents, approvals, authorizations, permits, breaches, losses, defaults, other occurrences or Liens which would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(a) Except as set forth in Section 3.5(a) of the Company Disclosure Letter, since January 1, 2011, the Company has timely filed or otherwise furnished (as applicable) all registration statements, prospectuses, forms, reports, definitive proxy statements, schedules, statements and documents required to be filed by it under the Securities Act or the Exchange Act, as the case may be, together with all certifications required pursuant to the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”) (such documents and any other documents filed by the Company or any of its Subsidiaries with the Securities and Exchange Commission (the “SEC”), including exhibits and other information incorporated therein as they have been supplemented, modified or amended since the time of filing, collectively, the “Company SEC Documents”). As of their respective filing dates (or, if amended or superseded by a filing prior to the date of this Agreement, then on the date of such filing), the Company SEC Documents (i) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading and (ii) complied in all material respects with the applicable requirements of the Exchange Act or the Securities Act, as the case may be, the Sarbanes-Oxley Act and the applicable rules and regulations of the SEC thereunder. Each Company SEC Document to be filed subsequent to the date of this Agreement will have complied in all material respects with the Securities Act, the Exchange Act and the Sarbanes-Oxley Act, as the case may be. None of the Company’s Subsidiaries is required to make any filings with the SEC. All of the audited consolidated financial statements and unaudited consolidated interim financial statements of the Company included in the Company SEC Documents (together with the related notes and schedules thereto, collectively, the “Company Financial Statements”) (A) have been prepared from, and are in accordance with, the books and records of the Company and the Company’s Subsidiaries in all material respects, (B) have been prepared in accordance with GAAP applied on a consistent basis during the periods involved (except as may be indicated in the notes thereto or, in the case of interim financial statements, for normal and recurring year-end adjustments) and (C) fairly present in all material respects the consolidated financial position and the consolidated results of operations, cash flows and changes in stockholders’ equity of the Company and its Subsidiaries as of the dates and for the periods referred to therein.

(b) The Company is in compliance in all material respects with (i) the applicable provisions of the Sarbanes-Oxley Act and (ii) the applicable listing and corporate governance rules and regulations of NASDAQ.

(c) The Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act), as required by Rules 13a-15(a) and 15d-15(a) of the Exchange Act, are reasonably designed to ensure that all material information required to be disclosed by the Company in the reports it files or furnishes under the Exchange Act is made known to the chief executive officer and the chief financial officer of the Company by others within the Company to allow timely decisions regarding required disclosure as required under the Exchange Act and is recorded, processed, summarized and reported within the time periods

specified by the SEC’s rules and forms. The Company has evaluated the effectiveness of the Company’s disclosure controls and procedures and, to the extent required by applicable Law, presented in any applicable Company SEC Document that is a report on Form 10-K or Form 10-Q, or any amendment thereto, its conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by such report or amendment based on such evaluation. The Company has disclosed, based on its most recent evaluation of internal control over financial reporting, to its outside auditors and the audit committee of the Company Board (i) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting that would reasonably be expected to adversely affect the Company’s ability to record, process, summarize and report financial information and (ii) any fraud, whether or not material, that involves management or other employees who have a significant role in the Company’s internal control over financial reporting. There has not been any such disclosure made by management to the Company’s outside auditors or the audit committee of the Company Board since January 1, 2011.

(d) To the Company’s Knowledge, none of the Company SEC Documents (other than confidential treatment requests) is the subject of ongoing SEC review. The Company has made available to Parent true and complete copies of all written comment letters from the staff of the SEC received since January 1, 2011 through the date of this Agreement relating to the Company SEC Documents and all written responses of the Company thereto through the date of this Agreement other than with respect to requests for confidential treatment. As of the date of this Agreement, there are no outstanding or unresolved comments in comment letters received from the SEC staff with respect to any Company SEC Documents other than confidential treatment requests. To the Company’s Knowledge, as of the date of this Agreement, there are no SEC inquiries or investigations, other governmental inquiries or investigations or internal investigations pending or threatened, in each case regarding any accounting practices of the Company.

Section 3.6 Absence of Certain Changes. Since December 31, 2012 through the date of this Agreement, (a) the business of the Company and its Subsidiaries has been conducted in the ordinary course in all material respects and (b) there has not been any event, occurrence, development or state of circumstances or facts or condition that has had or would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

Section 3.7 No Undisclosed Material Liabilities. There are no liabilities or obligations of the Company or any of its Subsidiaries, whether accrued, absolute, determined or contingent, except for (a) liabilities or obligations disclosed and provided for in the balance sheets included in the Company Financial Statements (or in the notes thereto) filed and publicly available prior to the date of this Agreement; (b) liabilities or obligations incurred in accordance with or in connection with this Agreement; (c) liabilities or obligations incurred since December 31, 2012 in the ordinary course of business consistent with past practice; and (d) liabilities or obligations that have not had and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect. Neither the Company nor any of its Subsidiaries is a party to, or has any commitment to become a party to, any joint venture, off-balance sheet partnership or any similar Contract or arrangement (including any Contract relating to any transaction or relationship between or among the Company and any of its Subsidiaries, on the one hand, and any unconsolidated Affiliate, including any structured finance, special purpose or limited

purpose entity or Person, on the other hand), or any “off-balance sheet arrangements” (as defined in Item 303(a) of Regulation S-K under the Exchange Act), where the result, purpose or effect of such Contract or arrangement is to avoid disclosure of any material transaction involving, or material liabilities of, the Company or any of its Subsidiaries, in the Company Financial Statements or the Company SEC Documents.

(a) As of the date of this Agreement, except as set forth in Section 3.8(a) of the Company Disclosure Letter, there are no civil, criminal or administrative actions, suits, claims, hearings, investigations or proceedings by or before any Governmental Entity or arbitrator (collectively, “Actions”) pending or, to the Company’s Knowledge, threatened against the Company or any of its Subsidiaries or any of their respective assets or properties that if determined adversely to the Company would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(b) As of the date of this Agreement, neither the Company nor any of its Subsidiaries or, to the Company’s Knowledge, any of their respective assets or properties, is subject to any outstanding Order, writ, injunction, decree or arbitration ruling, award or other finding that would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(c) For the avoidance of doubt, the provisions of this Section 3.8 do not apply to Environmental Laws, Environmental Permits or Hazardous Materials, as representations and warranties made by the Company and its Subsidiaries with regard to all environmental matters, including Environmental Laws, Environmental Permits and Hazardous Materials are solely and exclusively made in Section 3.17 of this Agreement.

(a) The Company and each of its Subsidiaries are in compliance with all Laws or Orders, except where any such failure to be in compliance has not had, or would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect. To the Company’s Knowledge, no investigation or review by any Governmental Entity with respect to the Company or any of its Subsidiaries is pending or threatened, nor has any Governmental Entity indicated an intention to conduct the same which, in each case, would reasonably be expected to have a Company Material Adverse Effect. To the Company’s Knowledge, the Company is in material compliance with the Foreign Corrupt Practices Act of 1977, as amended, and any rules and regulations thereunder.

(b) For the avoidance of doubt, the provisions of this Section 3.9 do not apply to Environmental Laws, Environmental Permits or Hazardous Materials, as representations and warranties made by the Company and its Subsidiaries with regard to all environmental matters, including Environmental Laws, Environmental Permits and Hazardous Materials are solely and exclusively made in Section 3.17.

(a) Except as would not have, or would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, the Company or one of its Subsidiaries, as the case may be, (i) holds good and valid title to all of the properties and assets reflected in the December 31, 2012 balance sheet included in the Company SEC Documents as being owned by the Company or one of its Subsidiaries or acquired after the date thereof that are material to the Company’s business on a consolidated basis (except for properties and assets sold or otherwise disposed of since the date thereof in the ordinary course of business) (collectively, with respect to real property, the “Owned Real Property”), free and clear of all Liens, except for Permitted Liens and other matters described in Section 3.10(a) of the Company Disclosure Letter; (ii) holds the Owned Real Property, or any portion thereof or interest therein, free of any outstanding options or rights of first refusal or offer to purchase or lease; (iii) is the lessee or permittee of all leasehold estates reflected in the December 31, 2012 financial statements included in the Company SEC Documents or acquired after the date thereof that are material to the Company’s business on a consolidated basis (except for leases that have expired by their terms since the date thereof or been assigned, terminated or otherwise disposed of in the ordinary course of business) (collectively, with respect to real property, the “Leased Real Property”); (iv) is in possession of the Leased Real Property, and each lease underlying the Leased Real Property is valid and in full force and effect, constitutes a valid and binding obligation of the Company or the applicable Subsidiary of the Company, subject to the Bankruptcy and Equity Exception; and (v) has not received any written notice of termination or cancellation of or of a breach or default in connection with the Company Leased Real Property.

(b) For the avoidance of doubt, the provisions of this Section 3.10 do not apply to the Oil and Gas Properties of the Company or its Subsidiaries, as representations and warranties made by the Company and its Subsidiaries with regard to all oil and gas matters are solely and exclusively made in Section 3.15.

(a) As of the date of this Agreement, except as set forth as an exhibit to the Company SEC Documents or on Section 3.11(a) of the Company Disclosure Letter, neither the Company nor any of its Subsidiaries is a party to or bound by any:

(i) Contracts relating to Indebtedness for borrowed money or any guarantee of any Indebtedness for borrowed money (other than in respect of Indebtedness for borrowed money of a wholly-owned Subsidiary of the Company) in excess of $1,000,000;

(ii) Non-competition agreements or any other agreements or arrangements that materially limit or otherwise materially restrict the Company or any of its Subsidiaries or any of their respective Affiliates or any successor thereto or that, to the Company’s Knowledge, would, after the Effective Time, limit or restrict Parent or any of its Subsidiaries (including the Surviving Corporation) or any successor thereto, in each case from engaging or competing in any line of business or in any geographic area, which agreement or arrangements would reasonably be expected to materially limit, materially restrict or materially conflict with the business of Parent and its Subsidiaries, taken as a whole (including for purposes of such determination, the Surviving Corporation and its Subsidiaries), after giving effect to the Merger;

(iii) Contracts required to be filed as an exhibit to the Company’s Annual Report on Form 10-K pursuant to Item 601(b)(10) of Regulation S-K under the Securities Act;

(iv) Contracts, including Company Oil and Gas Agreements, where the Company or any of its Subsidiaries has received or expects to receive $1,000,000 or more in revenues pursuant to such agreements in the current fiscal year;

(v) Contracts with respect to the receipt of any goods and services involving a payment of $1,000,000 or more per annum;

(vi) Joint venture, alliance, partnership or limited liability company agreements or similar Contracts relating to the formation, creation, operation, management or control of any joint venture, alliance, partnership or limited liability company that (A) is material to the Company, any of its Subsidiaries or any of the Oil and Gas Properties of the Company or any of its Subsidiaries; (B) is material to any investment in, or other commitment to, any Related Entity of the Company; or (C) would reasonably be expected to require the Company or its Subsidiaries to make expenditures in excess of $1,000,000 or more in the current fiscal year; or

(vii) Contracts that would prevent, materially delay or materially impede the consummation of the transactions contemplated by this Agreement.

(b) All Contracts to which the Company or any of its Subsidiaries is a party to or bound by as of the date of this Agreement that are either (i) of the type described in clause (a) above or (ii) material Company Oil and Gas Agreements relating to Oil and Gas Properties of the Company and its Subsidiaries are referred to herein as the “Company Material Contracts.” Except, in each case, as has not, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, (i) all Company Material Contracts are valid and binding on the Company and/or the relevant Subsidiary of the Company that is a party thereto and, to the Company’s Knowledge, each other party thereto, subject to the Bankruptcy and Equity Exception, (ii) all Company Material Contracts are in full force and effect, (iii) the Company and each of its Subsidiaries has performed all material obligations required to be performed by them under the Company Material Contracts to which they are parties, (iv) to the Company’s Knowledge, each other party to a Company Material Contract has performed all material obligations required to be performed by it under such Company Material Contract and (v) no party to any Company Material Contract has given the Company or any of its Subsidiaries written notice of its intention to cancel, terminate, change the scope of rights under or fail to renew any Company Material Contract and neither the Company nor any of its Subsidiaries, nor, to the Company’s Knowledge, any other party to any Company Material Contract, has repudiated in writing any material provision thereof. Neither the Company nor any of its Subsidiaries has Knowledge of, or has received written notice of, any violation of or default under (or any condition which with the passage of time or the giving of notice would cause such a violation of or default under or permit termination, modification or acceleration under) any Company Material Contract or any other Contract to which the Company or any of its

Subsidiaries is a party or by which the Company, any of its Subsidiaries or any of their respective material properties or assets is bound, except for violations or defaults that are not, individually or in the aggregate, reasonably likely to result in a Company Material Adverse Effect.

(a) Section 3.12(a) of the Company Disclosure Letter, sets forth a true, complete and correct list of each material “employee benefit plan” as defined in Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended, and the regulations promulgated thereunder (“ERISA”) (whether or not subject to ERISA), and any other material plan, policy, program, practice, agreement, understanding or arrangement (whether written or oral) providing compensation or other benefits to any current or former director, officer, employee or consultant (or to any dependent or beneficiary thereof) of the Company or any ERISA Affiliate, which are now maintained, sponsored or contributed to by the Company or any ERISA Affiliate, or under which the Company or any ERISA Affiliate has any material obligation or liability, whether actual or contingent, including all incentive, bonus, deferred compensation, vacation, holiday, cafeteria, medical, disability, stock purchase, stock option, stock appreciation, phantom stock, restricted stock, restricted stock unit, stock-based compensation, change-in-control, retention, employment, consulting, personnel or severance policies, programs, practices, Contracts or arrangements (each, a “Company Benefit Plan”), excluding Foreign Benefit Plans. For purposes of this Agreement, the term “Foreign Benefit Plans” shall mean those Company Benefit Plans maintained, sponsored or contributed to primarily for the benefit of current or former employees of the Company or any ERISA Affiliate who are or were regularly employed outside the United States (but which shall exclude any such Company Benefit Plans to the extent required by applicable foreign Law to be so maintained, sponsored or contributed to). Not more than 20 Business Days after the date of this Agreement, the Company shall deliver a true, complete and correct list of each Foreign Benefit Plan to Parent. For purposes of this Section 3.12 and Section 4.12, “ERISA Affiliate” shall mean any entity (whether or not incorporated) that, together with any other entity, is considered under common control and treated as one employer under Sections 414(b) or (c) of the Code. The Company has no express or implied commitment to terminate or modify or change any Company Benefit Plan, other than with respect to a termination, modification or change required by ERISA or the Code or which would not, individually or in the aggregate, reasonably be expected to have a Company Material Adverse Effect.

(b) Except as set forth in Section 3.12(b) of the Company Disclosure Letter, with respect to each Company Benefit Plan (other than any Foreign Benefit Plan), the Company has made available to Parent true, complete and correct copies of the following (as applicable): (i) the written document evidencing such Company Benefit Plan or, with respect to any such plan that is not in writing, a written description of the material terms thereof; (ii) the summary plan description; (iii) the most recent annual report, financial statement and/or actuarial report; (iv) the most recent determination letter from the Internal Revenue Service (the “IRS”); (v) the most recent Form 5500 required to have been filed with the IRS, including all schedules thereto; (vi) any related trust agreements, insurance contracts or other funding arrangements; (vii) any notices to or from the IRS or any office or Representative of the Department of Labor, Pension Benefit Guaranty Corporation (“PBGC”) or any other Governmental Entity relating to any

unresolved compliance issues in respect of any such Company Benefit Plan; and (viii) all material amendments, modifications or supplements to any Company Benefit Plan. With respect to each Foreign Benefit Plan, the Company will provide to Parent not more than 20 Business Days after the date of this Agreement the items identified in each of clauses (i) through (viii) above, to the extent applicable.

(c) Except as set forth in Section 3.12(c) of the Company Disclosure Letter, each Company Benefit Plan has been administered in all material respects in accordance with its terms, applicable Law (including Section 409A of the Code) and any applicable collective bargaining agreement, including, in all material respects, timely filing of all Tax, annual reporting and other governmental filings required by ERISA and the Code and timely contribution (or, if not yet due, proper financial reporting) of any amounts required to be made under the terms of any of the Company Benefit Plans as of the date of this Agreement. With respect to the Company Benefit Plans, no event has occurred and there exists no condition or set of circumstances in connection with which the Company or any of its Subsidiaries would be subject to any liability that, individually or in the aggregate, would reasonably be expected to be material to the Company and its Subsidiaries, taken as a whole. Each Company Benefit Plan that is intended to be “qualified” under Section 401 of the Code has received a favorable determination letter from the IRS to such effect and, to the Company’s Knowledge, no fact, circumstance or event has occurred or exists since the date of such determination letter that would reasonably be expected to adversely affect the qualified status of any such Company Benefit Plan. None of the Company or any of its Subsidiaries has received notice of and, to the Company’s Knowledge, there are no audits or investigations by any Governmental Entity with respect to, or other Actions against or involving any Company Benefit Plan or asserting rights or claims to benefits under any Company Benefit Plan (other than routine claims for benefits payable in the normal course). Other than as set forth in Section 3.12(c) of the Company Disclosure Letter, each Company Benefit Plan subject to ERISA that provides retiree healthcare or life insurance benefits in the United States provides by its terms that it may be amended or terminated without material liability to the Company or any of its Subsidiaries at any time after the Effective Time (other than as required by applicable Law).

(d) Except as set forth in Section 3.12(d) of the Company Disclosure Letter, no Company Benefit Plan is a “multiemployer plan” (as defined in Sections 3(37) and 4001(a)(3) of ERISA) or a “multiple employer plan” within the meaning of Sections 4063/4064 of ERISA or Section 413(c) of the Code and neither the Company nor any ERISA Affiliate has sponsored or contributed to or been required to contribute to, or has any liability with respect to, a “multiemployer plan” or “multiple employer plan.”

(e) Except as set forth in Section 3.12(e) of the Company Disclosure Letter, neither the Company nor any ERISA Affiliate maintains or contributes to, or in the past has maintained or contributed to, any “employee benefit plan” within the meaning of Section 3(3) of ERISA that is subject to Section 412 of the Code or Section 302 or Title IV of ERISA. With respect to each plan set forth in Section 3.12(e) of the Company Disclosure Letter that is subject to Section 412 of the Code or Section 302 of Title IV of ERISA, except to the extent that the event or condition in question would not give rise to a Company Material Adverse Effect, (i) there does not exist any accumulated funding deficiency within the meaning of Section 412 of the Code or Section 302 of ERISA, whether or not waived; (ii) there has been no “reportable

event” within the meaning of Section 4043 of ERISA and the regulations thereunder which required a notice to the PBGC which has not been fully and accurately reported in a timely fashion, as required, or which, whether or not reported, would constitute grounds for the PBGC to institute involuntary termination proceedings with respect to any Company Benefit Plan that is subject to Title IV of ERISA; (iii) all premiums to the PBGC have been timely paid in full; (iv) there has not been a partial termination; and (v) none of the following events has occurred: (A) the filing of a notice of intent to terminate, (B) the treatment of an amendment to such a Company Benefit Plan as a termination under Section 4041 of ERISA or (C) the commencement of proceedings by the PBGC to terminate such a Company Benefit Plan and, to the Company’s Knowledge, no condition exists that presents a substantial risk that such proceedings will be instituted or which would constitute grounds under Section 4042 of ERISA for the termination of, or the appointment of a trustee to administer, any such plan.

(f) Except as set forth in Section 3.12(f) of the Company Disclosure Letter, the execution of this Agreement or the consummation of the Merger will not constitute an event that, either alone or in conjunction with any other event, will or may result in (i) any payment, acceleration, termination, forgiveness of Indebtedness, vesting, distribution, increase in compensation or benefits or obligation to fund benefits with respect to any current or former employee or other personnel of the Company or any of its Subsidiaries, (ii) any amount failing to be deductible by reason of Section 280G of the Code or (iii) the provision of any reimbursement of excise Taxes under Section 4999 of the Code or any income Taxes under the Code.

(g) (i) Each Foreign Benefit Plan has been established, maintained and administered in compliance with its terms and all applicable Laws and Orders of any controlling Governmental Entity; (ii) each Foreign Benefit Plan required to be registered has been registered and has been maintained in good standing with applicable regulatory authorities; and (iii) each Foreign Benefit Plan required to be funded and/or book reserved is funded and/or book reserved, as appropriate, in accordance with applicable Law.

Section 3.13 Labor Matters. Each of the Company and its Subsidiaries is in material compliance with all applicable Laws of the United States, or of any state or local government or any subdivision thereof or of any foreign government respecting employment and employment practices, terms and conditions of employment, wages and hours and occupational safety and health, including the Immigration Reform and Control Act, the Worker Adjustment Retraining and Notification Act, any Laws respecting employment discrimination, sexual harassment, disability rights or benefits, equal opportunity, plant closure issues, affirmative action, workers’ compensation, employee benefits, severance payments, COBRA, labor relations, employee leave issues, wage and hour standards, occupational safety and health requirements and unemployment insurance and related matters. Except as specifically identified on Section 3.13 of the Company Disclosure Letter, neither the Company nor any of its Subsidiaries is a party to or bound by any labor union or collective bargaining agreement. There is no unfair labor practice charge pending or, to the Company’s Knowledge, threatened which if determined adversely to the Company or its Subsidiaries would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect. To the Company’s Knowledge, there are no organizational campaigns, petitions or other activities or proceedings of any labor union, workers’ council or labor organization (a) seeking recognition of a collective bargaining unit with respect to any of the employees of the Company or any of its Subsidiaries or (b) compelling the Company or any

of its Subsidiaries to bargain with any such labor union, works council or labor organization. There are no material strikes, slowdowns, walkouts, work stoppages or other labor-related controversies pending or, to the Company’s Knowledge, threatened and neither the Company nor any of its Subsidiaries has experienced any such strike, slowdown, walkout, work stoppage or other labor-related controversy within the past three years.

(a) Except to the extent reserved for in the most recent Company Financial Statements, the Company and each of its Subsidiaries have timely filed, or have caused to be timely filed, all material Tax Returns required to be filed, all such Tax Returns are true, complete and accurate in all material respects, and all material amounts of Taxes shown to be due on such Tax Returns, or otherwise owed, have been or will be timely paid. The Company and each of its Subsidiaries, with respect to all income and other material Tax Returns filed by or with respect to any of them, have not waived any statute of limitations with respect to Taxes or agreed to any extension of time with respect to a Tax assessment or deficiency other than an extension attributable to an extension to file any such Tax Returns. The Company and each of its Subsidiaries have withheld and paid to the appropriate taxing authority all material Taxes required to have been withheld and paid in connection with amounts paid or owing to any current or former employee, independent contractor, creditor, stockholder or other Third Party and have complied in all material respects with all applicable Laws, rules and regulations relating to the payment and withholding of Taxes.

(b) Except as would not have and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, (i) no Tax Authority has asserted, or threatened in writing to assert, a Tax liability (exclusive of interest) in connection with an audit or other administrative or court proceeding involving Taxes of the Company or any of its Subsidiaries, (ii) neither the Company nor any of its Subsidiaries has distributed stock of another corporation or has had its stock distributed in a transaction that was purported or intended to be governed, in whole or in part, by Section 355 or Section 361 of the Code within the preceding five years, (iii) neither the Company nor any of its Subsidiaries has participated, or is currently participating, in a “listed transaction” as defined in Treasury Regulations Section 1.6011-4(b), (iv) neither the Company nor any of its Subsidiaries is a party to any agreement or arrangement relating to the apportionment, sharing, assignment or allocation of Taxes (other than an agreement or arrangement solely among the members of a group the common parent of which is the Company or any of its Subsidiaries), or has any liability for Taxes of any Person (other than the Company or any of its Subsidiaries) under Treasury Regulations Section 1.1502-6 or any similar provision of state, local or foreign Law, as a transferee or successor, by contract or otherwise, and (v) except as set forth in Section 3.14(b) of the Company Disclosure Letter, neither the Company nor any of its Subsidiaries has any net operating losses or other Tax attributes presently subject to limitation under Sections 382, 383 or 384 of the Code or the federal consolidated return regulations (or any corresponding or similar provision of the state, local or foreign income Tax Law), other than limitations as a result of the transactions contemplated by this Agreement.

(a) For purposes of this Agreement, “Company Oil and Gas Agreements” means the following types of Contracts to which the Company or any of its Subsidiaries is a party, whether as an original party, by succession or assignment or otherwise, with respect to the Oil and Gas Properties forming the basis for the reserves reflected in the Company Reserve Report: oil and gas leases, joint ventures, farm-in and farm-out agreements, agreements providing for an overriding royalty interest, agreements providing for a royalty interest, agreements providing for a net profits interest, crude oil or natural gas sales or purchase contracts, joint operating agreements, unit operating agreements, unit agreements, field equipment leases, agreements involving gas gathering, gas purchasing, or the marketing, transportation and/or processing of production, agreements containing obligations to drill additional wells or conduct other material development operations after the Effective Time, and agreements providing for an area of mutual interest or restricting the Company’s ability to operate, obtain, explore for or develop interests in a particular geographic area. Complete copies of all material Company Oil and Gas Agreements related to Oil and Gas Properties of the Company and its Subsidiaries have been made available to Parent.

(b) Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, the factual, non-interpretive data provided by the Company to Netherland, Sewell & Associates, Inc. (“NSAI”) relating to the Oil and Gas Properties of the Company and its Subsidiaries on which the reserve report prepared by NSAI referred to in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2012 (the “Company Reserve Report”) relied was accurate in all material respects at the time such data was provided to NSAI. With respect to the proved reserves reflected in the Company Reserve Report, the Company Reserve Report conforms in all material respects with Rule 4-10 of Regulation S-X promulgated by the SEC. Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, with respect to each lease, unit or well, the Company and its Subsidiaries are (i) entitled to not less than the “net revenue interest” and (ii) obligated to bear a percentage of the costs and expenses relating to the maintenance, development, operation and production of Hydrocarbons in an amount not greater than the “working interest”, in each case as shown on the Company Reserve Report. Except as set forth in Section 3.15(b) of the Company Disclosure Letter and except for changes (including changes in Hydrocarbon commodity prices) generally affecting the oil and gas industry, capital investment and normal depletion by production, and except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, there has been no change in respect of the matters addressed in the Company Reserve Report.

(c) Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, all material items of operating equipment, pipelines and facilities owned or leased by the Company or any of its Subsidiaries and used in the operation of the Oil and Gas Properties forming the basis for the reserves reflected in the Company Reserve Report are, in the aggregate, in a state of repair so as to be adequate to carry on the businesses of the Company and its Subsidiaries as presently conducted.

(d) Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, and except for goods and other property sold, used or otherwise disposed of since the date of the Company Reserve Report in the ordinary course of business or reflected as having been sold, used or otherwise disposed of in the Company SEC Documents, as of the date of this Agreement, the Company and its Subsidiaries own or have valid leases in or contractual rights to use all material operating equipment, pipelines and facilities used in the operation of their respective Oil and Gas Properties forming the basis for the reserves reflected in the Company Reserve Report in the manner in which such properties were operated as of the date of this Agreement.

(e) Except for property sold or otherwise disposed of since the date of the Company Reserve Report in the ordinary course of business or reflected as having been sold or otherwise disposed of in the Company SEC Documents, as of the date of this Agreement, the Company and its Subsidiaries have Defensible Title to all Oil and Gas Properties forming the basis for the reserves reflected in the Company Reserve Report, in each case relating to the interests referred to therein as of the date of such report, and in each case as attributable to interests owned by the Company and its Subsidiaries, free and clear of any Liens, except (i) Liens reflected in the Company SEC Documents filed prior to the date of this Agreement, (ii) Permitted Liens, and (iii) such imperfections of title, easements, Liens, government or tribal approvals or other matters and failures of title as could not, individually or in the aggregate, reasonably be expected to have a Company Material Adverse Effect.

(f) Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect or as set forth in Section 3.15(f) of the Company Disclosure Letter, the Company and its Subsidiaries have paid all material royalties, overriding royalties and other burdens on production due by the Company and its Subsidiaries with respect to their respective Oil and Gas Properties forming the basis for the reserves reflected in the Company Reserve Report (other than items that are being held in suspense).

(g) There are no assets constituting the Company’s Oil and Gas Properties (i) that are currently required to be Decommissioned pursuant to Laws or applicable Contracts that have not been Decommissioned, which failure to Decommission constitutes a Company Material Adverse Effect; (ii) that formerly produced but that are currently shut in or temporarily abandoned not in compliance with Laws and applicable Contracts, which noncompliance constitutes a Company Material Adverse Effect; or (iii) that have been Decommissioned but that have not been Decommissioned in compliance with Laws and applicable Contracts, which noncompliance constitutes a Company Material Adverse Effect.

(h) The letters of credit and bonds set forth on Section 3.15(h) of the Company Disclosure Letter are all of the bonds, letters of credit and any other form of financial assurance (“Financial Assurance”) posted or provided by the Company and its Subsidiaries with or to any Governmental Entity or Third Party which are required to be posted or provided in compliance with Laws or applicable Contracts and related to the Oil and Gas Properties operated by the Company or any of its Subsidiaries.

(i) To the Company’s Knowledge, none of the material Oil and Gas Properties of the Company and its Subsidiaries forming the basis for the reserves reflected in the Company Reserve Report is subject to any preferential purchase, consent or similar right that would become operative as a result of the transactions contemplated by this Agreement.

(j) Except as disclosed in Section 3.15(j) of the Company Disclosure Letter, to the Company’s Knowledge, none of the Oil and Gas Properties of the Company and its Subsidiaries forming the basis for the reserves reflected in the Company Reserve Report is subject to any tax partnership agreement or other provisions requiring a partnership income Tax Return to be filed under Subchapter K of Chapter 1 of Subtitle A of the Code.

(k) None of the Company or any of its Subsidiaries has received any material advance, take-or-pay or other similar payments that entitle purchasers of production from the Oil and Gas Properties forming the basis for the reserves reflected in the Company Reserve Report to receive deliveries of Hydrocarbons without paying therefor.

(l) Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, none of the Company or any of its Subsidiaries has made any election as of the date of this Agreement to not participate in any operation or activity proposed with respect to their Oil and Gas Properties which could result in their interests in such Oil and Gas Properties being subject to a penalty or forfeiture as a result of such election not to participate in such operation or activity.

(m) Section 3.15(m) of the Company Disclosure Letter sets forth, as of the date of this Agreement, a true and complete list of all authorities for expenditures or capital commitments relating to the Oil and Gas Properties of the Company and its Subsidiaries that bind the Company or its Subsidiary to spend, individually or in the aggregate, more than $1,000,000 on drilling or reworking wells or on other capital projects from and after the date of this Agreement.

(a) Except as, individually or in the aggregate, would not reasonably be expected to have a Company Material Adverse Effect, (i) to the Company’s Knowledge, the Company and each of its Subsidiaries owns, or is licensed to use (in each case, free and clear of any Liens, other than Permitted Liens), all Intellectual Property used in its business as currently conducted; (ii) to the Company’s Knowledge, the conduct of its business as currently conducted, including the use of any Intellectual Property by the Company and its Subsidiaries, does not infringe on, misappropriate or otherwise violate the rights of any Person and is in accordance with any applicable license pursuant to which the Company or any Subsidiary acquired the right to use any Intellectual Property; (iii) to the Company’s Knowledge, no Person is challenging, infringing on, misappropriating or otherwise violating any right of the Company or any of its Subsidiaries with respect to any Intellectual Property owned by the Company or its Subsidiaries; and (iv) to the Company’s Knowledge, neither the Company nor any of its Subsidiaries has received any written notice or otherwise has Knowledge of any pending claim, Order or proceeding with respect to any Intellectual Property used by the Company and its Subsidiaries and to its Knowledge no Intellectual Property owned by the Company or its Subsidiaries is being used or enforced in a manner that would reasonably be expected to result in the abandonment, cancellation or unenforceability of such Intellectual Property.

(b) The Company and its Subsidiaries have taken reasonable steps to protect the confidentiality and value of all material trade secrets and any other material confidential information that are owned, used or held by the Company and its Subsidiaries in confidence, including entering into licenses and Contracts that require licensees, contractors, and other Persons with access to trade secrets or other confidential information to safeguard and maintain the secrecy and confidentiality of such trade secrets. To the Company’s Knowledge, such trade secrets have not been used, disclosed to or discovered by any Person except pursuant to a valid and appropriate non-disclosure agreement, license or any other appropriate Contract which has not been breached.

(c) The consummation of the transactions contemplated by this Agreement will not diminish or terminate the ownership of or rights in any material Intellectual Property owned or used by the Company or its Subsidiaries in their respective businesses as currently conducted and, except as would not reasonably be expected to have a Company Material Adverse Effect, to the Company’s Knowledge, after the Closing Date the Company and its Subsidiaries will have the right to use such Intellectual Property on the same basis as prior to the consummation of the transactions contemplated by this Agreement.

(a) The Company and its Subsidiaries are in compliance with all Environmental Laws, and to the Company’s Knowledge, with respect to any surviving time periods specified in all applicable statutes of limitation, any past noncompliance by the Company and its Subsidiaries with Environmental Laws has been resolved, except for any failure to comply or to resolve past noncompliance that would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(b) Except as would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, (i) each of the Company and its Subsidiaries has, as applicable, developed and submitted or obtained, maintained and complied with all Environmental Permits necessary for the conduct and operation of its business as currently conducted and operated, and the Company or any applicable Subsidiary of the Company has not received any notice that any such Environmental Permit is not in full force and effect; and (ii) no such Environmental Permit is or will be subject to review, revision, major modification, voidance or prior consent by any Governmental Entity as a result of the consummation of the transactions contemplated by this Agreement.

(c) None of the Company or any of its Subsidiaries has received any notice of any violation of, or liability under, Environmental Laws or Environmental Permits or with respect to Hazardous Materials or the posting or provision of the Company’s Financial Assurance or performance of Decommissioning for Oil and Gas Properties operated by the Company or any of its Subsidiaries as required under Laws or applicable Contracts, which violations or liabilities would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(d) Except as set forth in Section 3.17(d) of the Company Disclosure Letter, there are no pending or, to the Company’s Knowledge, threatened civil, criminal or

administrative Actions, notices of violation, arbitrations or demand letters pursuant to Environmental Laws or Environmental Permits or with respect to Hazardous Materials or the posting or provision of the Company’s Financial Assurance or performance of Decommissioning for Oil and Gas Properties operated by the Company or any of its Subsidiaries as required under Laws or applicable Contracts, which, in each instance, is alleged against the Company or any of its Subsidiaries or, to the Company’s Knowledge, related to the Owned Real Property or the Leased Real Property or any other property previously owned or operated by the Company or any of its Subsidiaries for which the Company or any of its Subsidiaries retains any liabilities and that would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(e) Neither the Company nor any of its Subsidiaries has received written notice of a release and, to the Company’s Knowledge, none of them has other notice of a release of any Hazardous Materials on, at, or from the Owned Real Property, the Leased Real Property, or their Oil and Gas Properties, except for any release (i) that is (A) in compliance with Environmental Laws or Environmental Permits and (B) occurring in a manner or in quantities or locations that would not require any investigation or remediation of soil or groundwater or any other environmental media, including in an offshore environment, under Environmental Laws, or (ii) that would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(f) Neither the Company nor any of its Subsidiaries has transported or disposed of, or arranged for the transport or disposal of any Hazardous Material at or to any off-site location which, to the Company’s Knowledge, has resulted in, or would reasonably be expected to result in, a liability to the Company that has had, or would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(g) To the Company’s Knowledge, there are no Liens applicable to any Owned Real Property, Leased Real Property or its Oil and Gas Properties arising out of or pursuant to Environmental Laws that have had, or would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(h) To the Company’s Knowledge, there are no other circumstances or conditions relating to the Company’s Owned Real Property, Leased Real Property or its Oil and Gas Properties or the Company’s operations associated therewith, including with respect to Environmental Permits, Hazardous Materials, the Company’s Financial Assurances and Decommissioning that have resulted in or would reasonably be expected to result in, the Company incurring a liability or obligation, pursuant to any Environmental Laws and that has had, or would reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(i) The Company has provided to Parent true and complete copies of, or access to, all written environmental assessment reports that have been prepared by or on behalf of the Company or any of its Subsidiaries and that are in the Company’s or any of its Subsidiaries’ possession.

Section 3.18 Insurance. Except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, (a) each insurance policy under which the Company or any of its Subsidiaries is an insured or otherwise the principal beneficiary of coverage (collectively, the “Insurance Policies”) is in full force and effect, all premiums due thereon have been paid in full and the Company and its Subsidiaries are in compliance with the terms and conditions of such Insurance Policy; (b) neither the Company nor any of its Subsidiaries is in breach or default under any Insurance Policy; and (c) no event has occurred which, with notice or lapse of time, would constitute such breach or default, or permit termination or modification, under any Insurance Policy.

(a) Neither the Company nor any of its Subsidiaries is (i) an “investment company” or a company “controlled” by an “investment company” within the meaning of the Investment Company Act of 1940, as amended, and the rules and regulations promulgated thereunder or (ii) a “holding company,” a “subsidiary company” of a “holding company,” an “affiliate” of a “holding company,” a “public utility” or a “public-utility company,” as each such term is defined in the Public Utility Holding Company Act of 2005. All natural gas pipeline systems and related facilities constituting the Company’s or any of its Subsidiaries’ properties are (A) “gathering facilities” that are exempt from regulation by the Federal Energy Regulatory Commission (“FERC”) under the Natural Gas Act of 1938, as amended; and (B) not subject to rate regulation or comprehensive nondiscriminatory access regulation under the laws of any state or other local jurisdiction.

(b) Except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, each of the Company and its Subsidiaries holds all licenses, permits, franchises, variances, registrations, exemptions, Orders and other governmental authorizations, consents, approvals and clearances, and has submitted notices to, all Governmental Entities necessary for the lawful operating of the businesses of the Company or any of its Subsidiaries as currently conducted (the “Company Permits”), and all such Company Permits are valid, and in full force and effect. Since January 1, 2011, there has not occurred any violation of, default (with or without notice or lapse of time or both) under, or event giving to others any right of termination, amendment or cancellation of, with or without notice or lapse of time or both, any Company Permit except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect. The Company and each of its Subsidiaries are in compliance in all material respects with the terms of all Company Permits, and no event has occurred that, to the Company’s Knowledge, would reasonably be expected to result in the revocation, cancellation, non-renewal or adverse modification of any Company Permit, in each case, except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect.

(c) For the avoidance of doubt, the provisions of this Section 3.19 do not apply to Environmental Laws, Environmental Permits or Hazardous Materials, as representations and warranties made by the Company and its Subsidiaries with regard to all environmental matters, including Environmental Laws, Environmental Permits and Hazardous Materials, are solely and exclusively made in Section 3.17 of this Agreement.

Section 3.20 Interested Party Transactions. Except as disclosed in Section 3.20 of the Company Disclosure Letter, since January 1, 2011, there have been no transactions, agreements, arrangements or understandings between the Company or any of its Subsidiaries on the one hand, and the Affiliates of the Company on the other hand (other than the Company’s Subsidiaries), that would be required to be disclosed under Item 404 of Regulation S-K under the Exchange Act and that has not been so disclosed.

Section 3.21 Company Information. The information relating to the Company or any Subsidiary of the Company to be included or incorporated by reference in the Joint Proxy Statement and the Form S-4 will not, at the time the Form S-4 is declared effective, the time the Joint Proxy Statement is first mailed to stockholders of the Company and Parent and the time of the Company Stockholder Meeting and the Parent Stockholder Meeting, contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in light of the circumstances in which they are made, not misleading. The information relating to the Company or any Subsidiary of the Company that is provided or to be provided by the Company or its Representatives for inclusion in any document (other than the Form S-4) filed with any other Governmental Entity in connection with the transactions contemplated by this Agreement will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in light of the circumstances in which they are made, not misleading. All documents that the Company is responsible for filing with the SEC in connection with the Merger or the other transactions contemplated hereby (including the Joint Proxy Statement and the Form S-4) (except for such portions thereof that relate only to Parent, Merger Sub or any of their Subsidiaries) will comply as to form and substance in all material respects with the provisions of the Securities Act and the Exchange Act.

Section 3.22 Derivatives. Section 3.22 of the Company Disclosure Letter contains an accurate and complete list of all outstanding Derivative positions of the Company and its Subsidiaries, including Hydrocarbon and financial Derivative positions attributable to the production and marketing of the Company and its Subsidiaries, as of the date reflected therein.

Section 3.23 Company Ownership of Parent Securities. Prior to the Parent Board approving this Agreement, the Merger and the other transactions contemplated hereby for purposes of the applicable provisions of the DGCL, neither the Company nor any of its Subsidiaries, alone or together with any other Person, was at any time, or became, an “interested stockholder” (as such term is defined in Section 203 of the DGCL) thereunder or has taken any action that would cause any anti-takeover statute under the DGCL or other applicable state Law to be applicable to this Agreement, the Merger, or any of the transactions contemplated hereby. None of the Company or any of its Subsidiaries has any direct or indirect beneficial ownership, or sole or shared voting power, with respect to any shares of Parent Common Stock.

Section 3.24 Opinion of Financial Advisor. The Company has received the opinion of Barclays Capital Inc., financial advisor to the Company (the “Company Financial Advisor”), to the effect that, as of the date of this Agreement, and based upon and subject to the factors and assumptions set forth therein, the Exchange Ratio is fair to the Company’s stockholders from a financial point of view.

Section 3.25 Brokers and Finders. Neither the Company nor any of its Subsidiaries has employed any broker or finder or incurred any liability for any brokerage fees, commissions or finder’s fees in connection with the Merger or the other transactions contemplated by this Agreement, except that the Company has retained the Company Financial Advisor, and the Company has heretofore made available to Parent a true and complete copy of all agreements between the Company and the Company Financial Advisor pursuant to which such firm would be entitled to any payment relating to the Merger and the other transactions contemplated by this Agreement.

(a) Except as set forth in Section 3.26(a) of the Company Disclosure Letter, neither the Company nor any of its Subsidiaries has (i) any obligation or has made any commitment to acquire any Equity Interest, to provide funds to, or to make any investment (in the form of a loan, capital contribution or otherwise) in any of the Company’s Related Entities or any Subsidiary of any such Related Entities; (ii) any indemnity obligations, or any guarantees of any Indebtedness for borrowed money with respect to any of the Company’s Related Entities or any Subsidiary of any such Related Entities; or (iii) as of the date of this Agreement, any material outstanding payables, receivables, loans, advances or other accounts, in each case with respect to any of the Company’s Related Entities or any Subsidiary of any such Related Entities.

(b) Except as set forth in Section 3.26(b) of the Company Disclosure Letter, to the Company’s Knowledge, neither the Company nor any of its Subsidiaries has any obligations or liabilities, whether actual or contingent, with respect to any incentive, bonus, deferred compensation, vacation, holiday, cafeteria, medical, disability, stock purchase, stock option, stock appreciation, phantom stock, restricted stock, restricted stock unit, stock-based compensation, change-in-control, retention, employment, consulting, personnel or severance policies, programs, practices, Contracts or arrangements with respect to any of the Company’s Related Entities or any Subsidiary of any such Related Entities.

(c) Section 3.26(c) of the Company Disclosure Letter sets forth a true and correct list of all Contracts between the Company and/or any of its Subsidiaries and any of the Company’s Related Entities or any Subsidiary of any such Related Entities (the “Company Related Entity Contracts”). Except, in each case, as has not, and would not reasonably be expected to have, individually or in the aggregate, a Company Material Adverse Effect, (i) all Company Related Entity Contracts are valid and binding on the Company and/or the relevant Subsidiary of the Company that is a party thereto and, to the Company’s Knowledge, each other party thereto, subject to the Bankruptcy and Equity Exception; (ii) all Company Related Entity Contracts are in full force and effect; (iii) the Company and each of its Subsidiaries have performed all material obligations required to be performed by them under the material Company Related Entity Contracts to which they are parties; and (iv) to the Company’s Knowledge, each other party to a material Company Related Entity Contract has performed all material obligations required to be performed by it under such material Company Related Entity Contract.

(d) Section 3.26(d) of the Company Disclosure Letter sets forth, as of the date of this Agreement, for each of the Company’s Related Entities, the number of outstanding shares

of capital stock or other Equity Interests and type(s) of such shares or other Equity Interests owned by the Company or its Subsidiaries. The Company owns directly or indirectly, beneficially and of record, all of such shares of capital stock or other Equity Interests, free and clear of any Liens other than Permitted Liens and Liens created under the applicable Company Related Entity Contracts.

(a) Except for the representations and warranties made in this Article III, neither the Company nor any other Person makes any express or implied representation or warranty with respect to the Company or its Subsidiaries or Related Entities or their respective businesses, operations, assets, liabilities, conditions (financial or otherwise) in connection with this Agreement or the transactions contemplated hereby, and the Company hereby disclaims any such other representations or warranties. In particular, without limiting the foregoing disclaimer, neither the Company nor any other Person makes or has made any representation or warranty to Parent, Merger Sub, or any of their Affiliates or Representatives with respect to (a) any financial projection, forecast, estimate, budget or prospect information relating to the Company, any of its Subsidiaries or Related Entities or their respective businesses; or (b) except for the representations and warranties made by the Company in this Article III, any oral or written information presented to Parent, Merger Sub or any of their Affiliates or Representatives in the course of their due diligence investigation of the Company, the negotiation of this Agreement or in the course of the transactions contemplated hereby.

(b) The Company acknowledges and agrees that it has (i) had the opportunity to meet with the management of Parent and to discuss the business, assets and liabilities of Parent and its Subsidiaries and Related Entities; (ii) been afforded the opportunity to ask questions of and receive answers from officers of Parent; and (iii) conducted its own independent investigation of Parent and its Subsidiaries and Related Entities, their respective businesses, assets, liabilities and the transactions contemplated by this Agreement.

(c) Notwithstanding anything contained in this Agreement to the contrary, the Company acknowledges and agrees that none of Parent, Merger Sub or any other Person has made or is making any representations or warranties relating to Parent or its Subsidiaries (including Merger Sub) or Related Entities whatsoever, express or implied, beyond those expressly given by Parent and Merger Sub in Article IV, including any implied representation or warranty as to the accuracy or completeness of any information regarding Parent furnished or made available to the Company, or any of its Representatives. Without limiting the generality of the foregoing, the Company acknowledges that no representations or warranties are made with respect to any projections, forecasts, estimates, budgets or prospect information that may have been made available to the Company or any of its Representatives.

Except (i) as disclosed in the Parent SEC Documents filed since June 30, 2012 but prior to the date of this Agreement (but excluding any risk factor disclosures contained under the

heading “Risk Factors” or “forward-looking statements”) or (ii) as set forth in the Parent Disclosure Letter delivered by Parent to the Company prior to or concurrent with the execution of this Agreement (the “Parent Disclosure Letter”), which identifies items of disclosure by reference to a particular section or subsection of this Agreement (provided, however, that any information set forth in one section of such Parent Disclosure Letter also shall be deemed to apply to each other section and subsection of this Agreement to which its relevance is reasonably apparent), each of Parent and Merger Sub hereby represents and warrants to the Company as follows:

(a) Each of Parent and Merger Sub and Parent’s Subsidiaries is a corporation duly organized, validly existing and in good standing (with respect to jurisdictions that recognize the concept of good standing) under the Laws of its respective jurisdiction of organization and has all requisite corporate or similar power and authority to own, lease and operate its properties and assets and to carry on its business as presently conducted, except with respect to Parent’s Subsidiaries, where the failure to be so organized, qualified or in good standing, or to have such power or authority when taken together with all other such failures, has not, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect. Each of Parent and its Subsidiaries is duly qualified or licensed to do business and is in good standing (with respect to jurisdictions that recognize the concept of good standing) as a foreign corporation in each jurisdiction where the ownership, leasing or operation of its assets or properties or conduct of its business requires such qualification, except where the failure to be so organized, qualified or in good standing, or to have such power or authority when taken together with all other such failures, has not, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(b) Parent has delivered or made available to the Company a true and complete copy of Parent’s currently effective certificate of incorporation and bylaws, as amended and restated to the date of this Agreement. Parent’s certificate of incorporation and bylaws so delivered are in full force and effect and Parent is not in violation of its certificate of incorporation or bylaws.

(c) Section 4.1(c) of the Parent Disclosure Letter lists, as of the date of this Agreement, (i) each Subsidiary of Parent and (ii) each Related Entity of Parent.

(a) As of the close of business on the Capitalization Date, the authorized capital stock of Parent consisted of (i) 50,000,000 shares of Parent Common Stock, of which 15,194,952 shares were outstanding and 4,940,155 shares were held in the treasury of Parent and (ii) 5,000,000 shares of preferred stock of Parent, par value $0.04 per share (“Parent Preferred Stock”), of which no shares were outstanding or held in the treasury of Parent. There are no other classes of capital stock of Parent authorized or outstanding. All issued and outstanding shares of the capital stock of Parent are, and when shares of Parent Common Stock are issued in connection with the Merger or pursuant to Section 1.8 and Section 1.9, such shares will be, duly authorized, validly issued, fully paid and non-assessable, and no class of capital stock is entitled to preemptive rights.

(b) From the close of business on the Capitalization Date through the date of this Agreement, there have been no issuances of shares of the capital stock or equity securities of Parent or any other securities of Parent other than issuances of shares of Parent Common Stock pursuant to the exercise of Parent Stock Options outstanding as of the Capitalization Date under the Company Stock Plans. There were outstanding as of the Capitalization Date, no options, warrants, calls, commitments, agreements, arrangements, undertakings or any other rights to acquire capital stock from Parent other than Parent Stock Options as set forth in Section 4.2(b) of the Parent Disclosure Letter. Section 4.2(b) of the Parent Disclosure Letter sets forth a complete and correct list, as of the Capitalization Date, of the number of shares of Parent Common Stock subject to Parent Stock Options, restricted shares of Parent Common Stock (“Parent Restricted Stock”) or any other rights to purchase or receive Parent Common Stock granted under the Parent Stock Plans or otherwise, the dates of grant, the extent to which such options are vested and, where applicable, the exercise prices thereof. Except as set forth in Section 4.2(b) of the Parent Disclosure Letter, since the Capitalization Date through the date of this Agreement, Parent has not issued or awarded, or authorized the issuance or award of, any options, restricted stock or other equity-based awards under the Parent Stock Plans or otherwise. Immediately prior to the Closing, Parent will have provided to the Company a complete and correct list, as of the Closing, of the number of shares of Parent Common Stock subject to Parent Stock Options, Parent Restricted Stock or any other rights to purchase or receive Parent Common Stock granted under the Parent Stock Plans or otherwise, the dates of grant, the extent to which such options are vested and, where applicable, the exercise prices thereof. No options, warrants, restricted stock units, calls, commitments, agreements, arrangements, undertakings or other rights to acquire capital stock from Parent, or other equity-based awards, have been issued or granted on or after the Capitalization Date through the date of this Agreement.

(c) No bonds, debentures, notes or other Indebtedness of Parent having the right to vote (or convertible into or exercisable for securities having the right to vote) on any matters on which holders of capital stock of Parent may vote are issued or outstanding.

(d) Except as otherwise set forth in this Section 4.2 or in Section 4.2(d) of the Parent Disclosure Letter, as of the date of this Agreement, (i) there are no outstanding obligations of Parent or any of its Subsidiaries to repurchase, redeem or otherwise acquire any shares of capital stock of Parent or any of its Subsidiaries except for purchases, redemptions or other acquisitions of capital stock or other securities (A) required by the terms of the Parent Benefit Plans, (B) in order to pay Taxes or satisfy withholding obligations in respect of such Taxes in connection with the exercise of Parent Stock Options or the vesting of Parent Restricted Stock, or (C) as required by the terms of, or necessary for the administration of, any plans, arrangements or agreements existing on the date of this Agreement between Parent or any of its Subsidiaries and any director or employee of Parent or any of its Subsidiaries and (ii) there are no outstanding stock-appreciation rights, security-based performance units, shares of “phantom” stock or other security rights or other agreements, arrangements or commitments of any character (contingent or otherwise) pursuant to which any Person is or may be entitled to receive any payment or other value based on the stock price performance of Parent or any of its Subsidiaries (other than under the Parent Stock Plans) or to cause Parent or any of its Subsidiaries to file a registration statement under the Securities Act.

(e) Except as set forth in this Section 4.2 or in Section 4.2(e) of the Parent Disclosure Letter, as of the date of this Agreement, there are no outstanding obligations of Parent or any of its Subsidiaries (i) restricting the transfer of, (ii) affecting the voting rights of, (iii) requiring the sale, issuance, repurchase, redemption or disposition of, or containing any right of first refusal with respect to, (iv) requiring the registration for sale of or (v) granting any preemptive or antidilutive rights with respect to any shares of Parent Common Stock, Parent Preferred Stock or other Equity Interests in Parent or any of its Subsidiaries.

(f) Section 4.2(f) of the Parent Disclosure Letter sets forth, as of the date of this Agreement, for each of Parent’s Subsidiaries, (i) its authorized capital stock or other Equity Interests, (ii) the number of its outstanding shares of capital stock or other Equity Interests and type(s) of such outstanding shares of capital stock or other Equity Interests and (iii) the record owner(s) thereof. Parent owns directly or indirectly, beneficially and of record, all of the issued and outstanding shares of capital stock or other Equity Interests of each of Parent’s Subsidiaries, free and clear of any Liens other than Permitted Liens, and all of such shares of capital stock or other Equity Interests have been duly authorized and validly issued and are fully paid, non-assessable and free of preemptive rights. Except for the ownership of Equity Interests in (A) Parent’s Subsidiaries and Related Entities and (B) investments in marketable securities and cash equivalents, none of Parent or any of its Subsidiaries owns directly or indirectly any Equity Interest in any Person, or has any obligation or has made any commitment to acquire any such Equity Interest, to provide funds to, or to make any investment (in the form of a loan, capital contribution or otherwise) in, any of its Subsidiaries or any other Person that is or would reasonably be expected to be material to Parent and its Subsidiaries, taken as a whole. No Subsidiary of Parent owns any Parent Common Stock or other Equity Interest in Parent.

(g) The authorized capital stock of Merger Sub consists of 3,000 shares of common stock, no par value per share, of which 100 shares are outstanding. All of the issued and outstanding capital stock of Merger Sub is, and at the Effective Time will be, owned by Parent, and there are (i) no other shares of capital stock or voting securities of Merger Sub, (ii) no securities of Merger Sub convertible into or exchangeable for shares of capital stock or voting securities of Merger Sub and (iii) no options or other rights to acquire from Merger Sub, and no obligations of Merger Sub to issue, any capital stock, voting securities or securities convertible into or exchangeable for capital stock or voting securities of Merger Sub.

(a) Each of Parent and Merger Sub has all requisite corporate power and authority and has taken all corporate action necessary in order to execute, deliver and perform its obligations under this Agreement and to consummate the transactions contemplated hereby, subject, assuming the accuracy of the representations and warranties of the Company set forth in Section 3.23, only to the approval of the Parent Share Issuance by the affirmative vote of the holders of a majority of the capital stock of Parent entitled to vote thereon present in person or by proxy at a meeting duly called for such purpose (the “Parent Stockholder Approval”), and to the filing and recording of the Certificate of Merger under the provisions of the DGCL. Parent, as

the sole stockholder of Merger Sub, will adopt and approve this Agreement and the transactions contemplated hereby immediately following execution of this Agreement by the Parties hereto. The Parent Stockholder Approval is the only vote of the holders of any class or series of capital stock of Parent or Merger Sub necessary to adopt, approve or authorize this Agreement, the Merger, the Parent Share Issuance and the other transactions contemplated by this Agreement. This Agreement has been duly authorized and validly executed and delivered by Parent and Merger Sub and, assuming due authorization, execution and delivery by the Company, constitutes a legal, valid and binding obligation of Parent and Merger Sub enforceable against Parent and Merger Sub in accordance with its terms, subject to the Bankruptcy and Equity Exception.

(b) As of the date of this Agreement, the Parent Board, by resolution duly adopted at a meeting duly called and held, has (i) approved and declared advisable this Agreement, the Merger, the Parent Share Issuance and the other transactions contemplated by this Agreement; (ii) resolved to recommend approval of the Parent Share Issuance to the stockholders of Parent; and (iii) directed that the Parent Share Issuance be submitted to the stockholders of Parent for approval.

(c) Assuming the accuracy of the representations and warranties of the Company set forth in Section 3.23, no Takeover Statute or any anti-takeover provision in Parent’s certificate of incorporation and bylaws is, or at the Effective Time will be, applicable to the Parent Common Stock, the Merger or the other transactions contemplated by this Agreement. Assuming the accuracy of the representations and warranties of the Company set forth in Section 3.23, the Parent Board has taken all action so that the Company will not be prohibited from entering into a “business combination” with Parent (as such term is used in Section 203 of the DGCL) as a result of the execution of this Agreement, or the consummation of the Merger or the other transactions contemplated hereby, without any further action on the part of Parent stockholders or the Parent Board.

(a) Except for the reports, registrations, consents, approvals, permits, authorizations, notices and/or filings (i) pursuant to Section 1.3, (ii) under the Securities Act and the Exchange Act, (iii) required to be made with the New York Stock Exchange (the “NYSE”), (iv) for or pursuant to other applicable foreign securities Law approvals, state securities, takeover and “blue sky” Laws, and (v) as set forth in Section 4.4(a) of the Parent Disclosure Letter, no notices, reports or other filings are required to be made by Parent or Merger Sub with, nor are any registrations, consents, approvals, permits or authorizations required to be obtained by Parent or Merger Sub from, any Governmental Entity, in connection with the execution and delivery of this Agreement by Parent or Merger Sub and the consummation by Parent or Merger Sub of the Merger and the other transactions contemplated by this Agreement, except those that the failure to make or obtain would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(b) None of the execution, delivery or performance of this Agreement by Parent or Merger Sub, the consummation by Parent of the Merger or any other transaction contemplated by this Agreement, or Parent’s or Merger Sub’s compliance with any of the

provisions of this Agreement will (with or without notice or lapse of time, or both), (i) subject to obtaining the Parent Stockholder Approval, conflict with or violate any provision of Parent’s or Merger Sub’s certificate of incorporation or bylaws or any equivalent organizational or governing documents of any of Parent’s or Merger Sub’s Subsidiaries; (ii) assuming that all consents, approvals, authorizations and permits described in this Section 4.4 have been obtained and all filings and notifications described in this Section 4.4 have been made and any waiting periods thereunder have terminated or expired, conflict with or violate any Law or Order applicable to Parent, Merger Sub, or any of their Subsidiaries or any of their respective properties or assets; or (iii) require any consent or approval under, violate, conflict with, result in any breach of or any loss of any benefit under, or constitute a default under, or result in termination or give to others any right of termination, vesting, amendment, acceleration or cancellation of, or result in the creation of a Lien, other than Permitted Liens, upon any of the respective properties or assets of Parent or any of its Subsidiaries pursuant to, any Contract, permit or other instrument or obligation to which Parent, Merger Sub or any of their Subsidiaries is a party or by which they or any of their respective properties or assets may be bound or affected, except, with respect to clauses (ii) and (iii), for any such conflicts, violations, consents, approvals, authorizations, permits, breaches, losses, defaults, other occurrences or Liens which would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(a) Except as set forth in Section 4.5(a) of the Parent Disclosure Letter, since July 1, 2010, each of Parent and Merger Sub has timely filed or otherwise furnished (as applicable) all registration statements, prospectuses, forms, reports, definitive proxy statements, schedules, statements and documents required to be filed by it under the Securities Act or the Exchange Act, as the case may be, together with all certifications required pursuant to the Sarbanes-Oxley Act (such documents and any other documents filed by Parent or any of its Subsidiaries with the SEC, including exhibits and other information incorporated therein as they have been supplemented, modified or amended since the time of filing, collectively, the “Parent SEC Documents”). As of their respective filing dates (or, if amended or superseded by a filing prior to the date of this Agreement, then on the date of such filing), the Parent SEC Documents (i) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading and (ii) complied in all material respects with the applicable requirements of the Exchange Act or the Securities Act, as the case may be, the Sarbanes-Oxley Act and the applicable rules and regulations of the SEC thereunder. Each Parent SEC Document to be filed subsequent to the date of this Agreement will have complied in all material respects with the Securities Act, the Exchange Act and the Sarbanes-Oxley Act, as the case may be. None of Parent’s Subsidiaries is required to make any filings with the SEC. All of the audited consolidated financial statements and unaudited consolidated interim financial statements of Parent included in the Parent SEC Documents (together with the related notes and schedules thereto, collectively, the “Parent Financial Statements”) (A) have been prepared from, and are in accordance with, the books and records of Parent and Parent’s Subsidiaries in all material respects, (B) have been prepared in accordance with GAAP applied on a consistent basis during the periods involved (except as may be indicated in the notes thereto or, in the case of interim financial statements, for normal and recurring year-end adjustments)

and (C) fairly present in all material respects the consolidated financial position and the consolidated results of operations, cash flows and changes in stockholders’ equity of Parent and its Subsidiaries as of the dates and for the periods referred to therein.

(b) Parent is in compliance in all material respects with (i) the applicable provisions of the Sarbanes-Oxley Act and (ii) the applicable listing and corporate governance rules and regulations of the NYSE.

(c) Parent’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act), as required by Rules 13a-15(a) and 15d-15(a) of the Exchange Act, are reasonably designed to ensure that all material information required to be disclosed by Parent in the reports it files or furnishes under the Exchange Act is made known to the chief executive officer and the chief financial officer of Parent by others within Parent to allow timely decisions regarding required disclosure as required under the Exchange Act and is recorded, processed, summarized and reported within the time periods specified by the SEC’s rules and forms. Parent has evaluated the effectiveness of Parent’s disclosure controls and procedures and, to the extent required by applicable Law, presented in any applicable Parent SEC Document that is a report on Form 10-K or Form 10-Q, or any amendment thereto, its conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by such report or amendment based on such evaluation. Parent has disclosed, based on its most recent evaluation of internal control over financial reporting, to its outside auditors and the audit committee of the Parent Board (i) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting that would reasonably be expected to adversely affect Parent’s ability to record, process, summarize and report financial information and (ii) any fraud, whether or not material, that involves management or other employees who have a significant role in Parent’s internal control over financial reporting. There has not been any such disclosure made by management to Parent’s outside auditors or the audit committee of the Parent Board since July 1, 2010.

(d) To Parent’s Knowledge, none of the Parent SEC Documents (other than confidential treatment requests) is the subject of ongoing SEC review. Parent has made available to the Company true and complete copies of all written comment letters from the staff of the SEC received since January 1, 2011 through the date of this Agreement relating to the Parent SEC Documents and all written responses of Parent thereto through the date of this Agreement other than with respect to requests for confidential treatment. As of the date of this Agreement, there are no outstanding or unresolved comments in comment letters received from the SEC staff with respect to any Parent SEC Documents other than confidential treatment requests. To Parent’s Knowledge, as of the date of this Agreement, there are no SEC inquiries or investigations, other governmental inquiries or investigations or internal investigations pending or threatened, in each case regarding any accounting practices of Parent.

Section 4.6 Absence of Certain Changes. Since June 30, 2012 through the date of this Agreement, (a) the business of Parent and its Subsidiaries has been conducted in the ordinary course in all material respects and (b) there has not been any event, occurrence, development or state of circumstances or facts or condition that has had or would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

Section 4.7 No Undisclosed Material Liabilities. There are no liabilities or obligations of Parent or any of its Subsidiaries, whether accrued, absolute, determined or contingent, except for (a) liabilities or obligations disclosed and provided for in the balance sheets included in the Parent Financial Statements (or in the notes thereto) filed and publicly available prior to the date of this Agreement; (b) liabilities or obligations incurred in accordance with or in connection with this Agreement; (c) liabilities or obligations incurred since December 31, 2012 in the ordinary course of business consistent with past practice; and (d) liabilities or obligations that have not had and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect. Neither Parent nor any of its Subsidiaries is a party to, or has any commitment to become a party to, any joint venture, off-balance sheet partnership or any similar Contract or arrangement (including any Contract relating to any transaction or relationship between or among Parent and any of its Subsidiaries, on the one hand, and any unconsolidated Affiliate, including any structured finance, special purpose or limited purpose entity or Person, on the other hand), or any “off-balance sheet arrangements” (as defined in Item 303(a) of Regulation S-K under the Exchange Act), where the result, purpose or effect of such Contract or arrangement is to avoid disclosure of any material transaction involving, or material liabilities of, Parent or any of its Subsidiaries, in the Parent Financial Statements or the Parent SEC Documents.

(a) As of the date of this Agreement, except as set forth in Section 4.8(a) of the Parent Disclosure Letter, there are no Actions pending or, to Parent’s Knowledge, threatened against Parent or Merger Sub or any of their Subsidiaries or any of their respective assets or properties that if determined adversely to Parent would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(b) As of the date of this Agreement, neither Parent nor any of its Subsidiaries or, to Parent’s Knowledge, any of their respective assets or properties, is subject to any outstanding Order, writ, injunction, decree or arbitration ruling, award or other finding that would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(c) For the avoidance of doubt, the provisions of this Section 4.8 do not apply to Environmental Laws, Environmental Permits or Hazardous Materials, as representations and warranties made by Parent and its Subsidiaries with regard to all environmental matters, including Environmental Laws, Environmental Permits and Hazardous Materials are solely and exclusively made in Section 4.17 of this Agreement.

(a) Parent and each of its Subsidiaries are in compliance with all Laws or Orders, except where any such failure to be in compliance has not had, or would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect. To Parent’s Knowledge, no investigation or review by any Governmental Entity with respect to Parent or any of its Subsidiaries is pending or threatened, nor has any Governmental Entity indicated an intention to conduct the same which, in each case, would reasonably be expected to

have a Parent Material Adverse Effect. To Parent’s Knowledge, Parent is in material compliance with the Foreign Corrupt Practices Act of 1977, as amended, and any rules and regulations thereunder.

(b) For the avoidance of doubt, the provisions of this Section 4.9 do not apply to Environmental Laws, Environmental Permits or Hazardous Materials, as representations and warranties made by Parent and its Subsidiaries with regard to all environmental matters, including Environmental Laws, Environmental Permits and Hazardous Materials are solely and exclusively made in Section 4.17.

(a) Except as would not have, or would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, Parent or one of its Subsidiaries, as the case may be, (i) holds good and valid title to all of the properties and assets reflected in the December 31, 2012 balance sheet included in the Parent SEC Documents as being owned by Parent or one of its Subsidiaries or acquired after the date thereof that are material to Parent’s business on a consolidated basis (except for properties and assets sold or otherwise disposed of since the date thereof in the ordinary course of business) (collectively, with respect to real property, the “Parent Owned Real Property”), free and clear of all Liens, except for Permitted Liens and other matters described in Section 4.10(a) of the Parent Disclosure Letter; (ii) holds the Parent Owned Real Property, or any portion thereof or interest therein, free of any outstanding options or rights of first refusal or offer to purchase or lease; (iii) is the lessee or permittee of all leasehold estates reflected in the December 31, 2012 financial statements included in the Parent SEC Documents or acquired after the date thereof that are material to Parent’s business on a consolidated basis (except for leases that have expired by their terms since the date thereof or been assigned, terminated or otherwise disposed of in the ordinary course of business) (collectively, with respect to real property, the “Parent Leased Real Property”); (iv) is in possession of the Parent Leased Real Property, and each lease underlying the Parent Leased Real Property is valid and in full force and effect, constitutes a valid and binding obligation of Parent or the applicable Subsidiary of Parent, subject to the Bankruptcy and Equity Exception; and (v) has not received any written notice of termination or cancellation of or of a breach or default in connection with the Parent Leased Real Property.

(b) For the avoidance of doubt, the provisions of this Section 4.10 do not apply to the Oil and Gas Properties of Parent or its Subsidiaries, as representations and warranties made by Parent and its Subsidiaries with regard to all oil and gas matters are solely and exclusively made in Section 4.15.

(a) As of the date of this Agreement, except as set forth as an exhibit to the Parent SEC Documents and on Section 4.11(a) of the Parent Disclosure Letter, neither Parent nor any of its Subsidiaries is a party to or bound by any:

(ii) Non-competition agreements or any other agreements or arrangements that materially limit or otherwise materially restrict Parent or any of its Subsidiaries or any of their respective Affiliates or any successor thereto or that, to Parent’s Knowledge, would, after the Effective Time, limit or restrict Parent or any of its Subsidiaries (including the Surviving Corporation) or any successor thereto, in each case from engaging or competing in any line of business or in any geographic area, which agreement or arrangements would reasonably be expected to materially limit, materially restrict or materially conflict with the business of Parent and its Subsidiaries, taken as a whole (including for purposes of such determination, the Surviving Corporation and its Subsidiaries), after giving effect to the Merger;

(iii) Contracts required to be filed as an exhibit to Parent’s Annual Report on Form 10-K pursuant to Item 601(b)(10) of Regulation S-K under the Securities Act;

(iv) Contracts, including Parent Oil and Gas Agreements, where Parent or any of its Subsidiaries has received or expects to receive $4,000,000 or more in revenues pursuant to such agreements in the current fiscal year;

(v) Contracts with respect to the receipt of any goods and services involving a payment of $4,000,000 or more in the current fiscal year;

(vi) Joint venture, alliance, partnership or limited liability company agreements or similar Contracts relating to the formation, creation, operation, management or control of any joint venture, alliance, partnership or limited liability company that (A) is material to Parent, its Subsidiaries or any of the Oil and Gas Properties of Parent or any of its Subsidiaries; (B) is material to any investment in, or other commitment to, any Related Entity of Parent; or (C) would reasonably be expected to require Parent or its Subsidiaries to make expenditures in excess of $4,000,000 or more per annum; or

(vii) Contracts that would prevent, materially delay or materially impede the consummation of the transactions contemplated by this Agreement.

(b) All Contracts to which Parent or any of its Subsidiaries is a party to or bound by as of the date of this Agreement that are either (i) of the type described in clause (a) above or (ii) material Parent Oil and Gas Agreements relating to Oil and Gas Properties of Parent and its Subsidiaries are referred to herein as the “Parent Material Contracts.” Except, in each case, as has not, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, (i) all Parent Material Contracts are valid and binding on Parent and/or the relevant Subsidiary of Parent that is a party thereto and, to Parent’s Knowledge, each other party thereto, subject to the Bankruptcy and Equity Exception, (ii) all Parent Material Contracts are in full force and effect, (iii) Parent and each of its Subsidiaries has performed all material obligations required to be performed by them under the Parent Material Contracts to which they are parties, (iv) to Parent’s Knowledge, each other party to a Parent Material Contract has performed all material obligations required to be performed by it under

such Parent Material Contract and (v) no party to any Parent Material Contract has given Parent or any of its Subsidiaries written notice of its intention to cancel, terminate, change the scope of rights under or fail to renew any Parent Material Contract and neither Parent nor any of its Subsidiaries, nor, to Parent’s Knowledge, any other party to any Parent Material Contract, has repudiated in writing any material provision thereof. Neither Parent nor any of its Subsidiaries has Knowledge of, or has received written notice of, any violation of or default under (or any condition which with the passage of time or the giving of notice would cause such a violation of or default under or permit termination, modification or acceleration under) any Parent Material Contract or any other Contract to which Parent or any of its Subsidiaries is a party or by which Parent, any of its Subsidiaries or any of their respective material properties or assets is bound, except for violations or defaults that are not, individually or in the aggregate, reasonably likely to result in a Parent Material Adverse Effect.

(a) Section 4.12(a) of the Parent Disclosure Letter, sets forth a true, complete and correct list of each material “employee benefit plan” as defined in Section 3(3) of ERISA (whether or not subject to ERISA), and any other material plan, policy, program, practice, agreement, understanding or arrangement (whether written or oral) providing compensation or other benefits to any current or former director, officer, employee or consultant (or to any dependent or beneficiary thereof) of Parent or any ERISA Affiliate, which are now maintained, sponsored or contributed to by Parent or any ERISA Affiliate, or under which Parent or any ERISA Affiliate has any material obligation or liability, whether actual or contingent, including all incentive, bonus, deferred compensation, vacation, holiday, cafeteria, medical, disability, stock purchase, stock option, stock appreciation, phantom stock, restricted stock, restricted stock unit, stock-based compensation, change-in-control, retention, employment, consulting, personnel or severance policies, programs, practices, Contracts or arrangements (each, a “Parent Benefit Plan”), excluding Foreign Benefit Plans. Not more than 20 Business Days after the date of this Agreement, Parent shall deliver a true, complete and correct list of each Foreign Benefit Plan to the Company. Parent has no express or implied commitment to terminate or modify or change any Parent Benefit Plan, other than with respect to a termination, modification or change required by ERISA or the Code or which would not, individually or in the aggregate, reasonably be expected to have a Parent Material Adverse Effect.

(b) Except as set forth in Section 4.12(b) of the Parent Disclosure Letter, with respect to each Parent Benefit Plan (other than any Foreign Benefit Plan), Parent has made available to the Company true, complete and correct copies of the following (as applicable): (i) the written document evidencing such Parent Benefit Plan or, with respect to any such plan that is not in writing, a written description of the material terms thereof; (ii) the summary plan description; (iii) the most recent annual report, financial statement and/or actuarial report; (iv) the most recent determination letter from the IRS; (v) the most recent Form 5500 required to have been filed with the IRS, including all schedules thereto; (vi) any related trust agreements, insurance contracts or other funding arrangements; (vii) any notices to or from the IRS or any office or Representative of the Department of Labor, PBGC or any other Governmental Entity relating to any unresolved compliance issues in respect of any such Parent Benefit Plan; and (viii) all material amendments, modifications or supplements to any Parent Benefit Plan. With respect to each Foreign Benefit Plan, Parent will provide to the Company not more than 20 Business Days after the date of this Agreement the items identified in each of clauses (i) through (viii) above, to the extent applicable.

(c) Except as set forth in Section 4.12(c) of the Parent Disclosure Letter, each Parent Benefit Plan has been administered in all material respects in accordance with its terms, applicable Law (including Section 409A of the Code) and any applicable collective bargaining agreement, including, in all material respects, timely filing of all Tax, annual reporting and other governmental filings required by ERISA and the Code and timely contribution (or, if not yet due, proper financial reporting) of any amounts required to be made under the terms of any of the Parent Benefit Plans as of the date of this Agreement. With respect to the Parent Benefit Plans, no event has occurred and there exists no condition or set of circumstances in connection with which Parent or any of its Subsidiaries would be subject to any liability that, individually or in the aggregate, would reasonably be expected to be material to Parent and its Subsidiaries, taken as a whole. Each Parent Benefit Plan that is intended to be “qualified” under Section 401 of the Code has received a favorable determination letter from the IRS to such effect and, to Parent’s Knowledge, no fact, circumstance or event has occurred or exists since the date of such determination letter that would reasonably be expected to adversely affect the qualified status of any such Parent Benefit Plan. None of Parent or any of its Subsidiaries has received notice of and, to Parent’s Knowledge, there are no audits or investigations by any Governmental Entity with respect to, or other Actions against or involving any Parent Benefit Plan or asserting rights or claims to benefits under any Parent Benefit Plan (other than routine claims for benefits payable in the normal course). Other than as set forth in Section 4.12(c) of the Parent Disclosure Letter, each Parent Benefit Plan subject to ERISA that provides retiree healthcare or life insurance benefits in the United States provides by its terms that it may be amended or terminated without material liability to Parent or any of its Subsidiaries at any time after the Effective Time (other than as required by applicable Law).

(d) Except as set forth in Section 4.12(d) of the Parent Disclosure Letter, no Parent Benefit Plan is a “multiemployer plan” (as defined in Sections 3(37) and 4001(a)(3) of ERISA) or a “multiple employer plan” within the meaning of Sections 4063/4064 of ERISA or Section 413(c) of the Code and neither Parent nor any ERISA Affiliate has sponsored or contributed to or been required to contribute to, or has any liability with respect to, a “multiemployer plan” or “multiple employer plan.”

(e) Except as set forth in Section 4.12(e) of the Parent Disclosure Letter, neither Parent nor any ERISA Affiliate maintains or contributes to, or in the past has maintained or contributed to, any “employee benefit plan” within the meaning of Section 3(3) of ERISA that is subject to Section 412 of the Code or Section 302 or Title IV of ERISA. With respect to each plan set forth in Section 4.12(e) of the Parent Disclosure Letter that is subject to Section 412 of the Code or Section 302 of Title IV of ERISA, except to the extent that the event or condition in question would not give rise to a Parent Material Adverse Effect, (i) there does not exist any accumulated funding deficiency within the meaning of Section 412 of the Code or Section 302 of ERISA, whether or not waived; (ii) there has been no “reportable event” within the meaning of Section 4043 of ERISA and the regulations thereunder which required a notice to the PBGC which has not been fully and accurately reported in a timely fashion, as required, or which, whether or not reported, would constitute grounds for the PBGC to institute involuntary termination proceedings with respect to any Parent Benefit Plan that is subject to Title IV of

ERISA; (iii) all premiums to the PBGC have been timely paid in full; (iv) there has not been a partial termination; and (v) none of the following events has occurred: (A) the filing of a notice of intent to terminate, (B) the treatment of an amendment to such a Parent Benefit Plan as a termination under Section 4041 of ERISA or (C) the commencement of proceedings by the PBGC to terminate such a Parent Benefit Plan and, to Parent’s Knowledge, no condition exists that presents a substantial risk that such proceedings will be instituted or which would constitute grounds under Section 4042 of ERISA for the termination of, or the appointment of a trustee to administer, any such plan.

(f) Except as set forth in Section 4.12(f) of the Parent Disclosure Letter, the execution of this Agreement or the consummation of the Merger will not constitute an event that, either alone or in conjunction with any other event, will or may result in (i) any payment, acceleration, termination, forgiveness of Indebtedness, vesting, distribution, increase in compensation or benefits or obligation to fund benefits with respect to any current or former employee or other personnel of Parent or any of its Subsidiaries, (ii) any amount failing to be deductible by reason of Section 280G of the Code or (iii) the provision of any reimbursement of excise Taxes under Section 4999 of the Code or any income Taxes under the Code.

Section 4.13 Labor Matters. Each of Parent and its Subsidiaries is in material compliance with all applicable Laws of the United States, or of any state or local government or any subdivision thereof or of any foreign government respecting employment and employment practices, terms and conditions of employment, wages and hours and occupational safety and health, including the Immigration Reform and Control Act, the Worker Adjustment Retraining and Notification Act, any Laws respecting employment discrimination, sexual harassment, disability rights or benefits, equal opportunity, plant closure issues, affirmative action, workers’ compensation, employee benefits, severance payments, COBRA, labor relations, employee leave issues, wage and hour standards, occupational safety and health requirements and unemployment insurance and related matters. Except as specifically identified on Section 4.13 of the Parent Disclosure Letter, neither Parent nor any of its Subsidiaries is a party to or bound by any labor union or collective bargaining agreement. There is no unfair labor practice charge pending or, to Parent’s Knowledge, threatened which if determined adversely to Parent or its Subsidiaries would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect. To Parent’s Knowledge, there are no organizational campaigns, petitions or other activities or proceedings of any labor union, workers’ council or labor organization (a) seeking recognition of a collective bargaining unit with respect to any of the employees of Parent or any of its Subsidiaries or (b) compelling Parent or any of its Subsidiaries to bargain with any such labor union, works council or labor organization. There are no material strikes, slowdowns, walkouts, work stoppages or other labor-related controversies pending or, to Parent’s Knowledge, threatened and neither Parent nor any of its Subsidiaries has experienced any such strike, slowdown, walkout, work stoppage or other labor-related controversy within the past three years.

(a) Except to the extent reserved for in the most recent Parent Financial Statements, Parent and each of its Subsidiaries have timely filed, or have caused to be timely filed, all material Tax Returns required to be filed, all such Tax Returns are true, complete and accurate in all material respects, and all material amounts of Taxes shown to be due on such Tax Returns, or otherwise owed, have been or will be timely paid. Parent and each of its Subsidiaries, with respect to all income and other material Tax Returns filed by or with respect to any of them, have not waived any statute of limitations with respect to Taxes or agreed to any extension of time with respect to a Tax assessment or deficiency other than an extension attributable to an extension to file any such Tax Returns. Parent and each of its Subsidiaries have withheld and paid to the appropriate taxing authority all material Taxes required to have been withheld and paid in connection with amounts paid or owing to any current or former employee, independent contractor, creditor, stockholder or other Third Party and have complied in all material respects with all applicable Laws, rules and regulations relating to the payment and withholding of Taxes.

(b) Except as would not have and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, (i) no Tax Authority has asserted, or threatened in writing to assert, a Tax liability (exclusive of interest) in connection with an audit or other administrative or court proceeding involving Taxes of Parent or any of its Subsidiaries, (ii) neither Parent nor any of its Subsidiaries has distributed stock of another corporation or has had its stock distributed in a transaction that was purported or intended to be governed, in whole or in part, by Section 355 or Section 361 of the Code within the preceding five years, (iii) neither Parent nor any of its Subsidiaries has participated, or is currently participating, in a “listed transaction” as defined in Treasury Regulations Section 1.6011-4(b), (iv) neither Parent nor any of its Subsidiaries is a party to any agreement or arrangement relating to the apportionment, sharing, assignment or allocation of Taxes (other than an agreement or arrangement solely among the members of a group the common parent of which is Parent or any of its Subsidiaries), or has any liability for Taxes of any Person (other than Parent or any of its Subsidiaries) under Treasury Regulations Section 1.1502-6 or any similar provision of state, local or foreign Law, as a transferee or successor, by contract or otherwise, and (v) except as set forth in Section 4.14(b) of the Parent Disclosure Letter, neither Parent nor any of its Subsidiaries has any net operating losses or other Tax attributes presently subject to limitation under Sections 382, 383 or 384 of the Code or the federal consolidated return regulations (or any corresponding or similar provision of the state, local or foreign income Tax Law), other than limitations as a result of the transactions contemplated by this Agreement.

(a) For purposes of this Agreement, “Parent Oil and Gas Agreements” means the following types of Contracts to which Parent or any of its Subsidiaries is a party, whether as an original party, by succession or assignment or otherwise, with respect to the Oil and Gas Properties forming the basis for the reserves reflected in the Parent Reserve Report: oil and gas

leases, joint ventures, farm-in and farm-out agreements, agreements providing for an overriding royalty interest, agreements providing for a royalty interest, agreements providing for a net profits interest, crude oil or natural gas sales or purchase contracts, joint operating agreements, unit operating agreements, unit agreements, field equipment leases, agreements involving gas gathering, gas purchasing, or the marketing, transportation and/or processing of production, agreements containing obligations to drill additional wells or conduct other material development operations after the Effective Time, and agreements providing for an area of mutual interest or restricting Parent’s ability to operate, obtain, explore for or develop interests in a particular geographic area. Complete copies of all material Parent Oil and Gas Agreements related to Oil and Gas Properties of Parent and its Subsidiaries have been made available to the Company.

(b) Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, the factual, non-interpretive data provided by Parent to William M. Cobb & Associates (“Cobb”) relating to the Oil and Gas Properties of Parent and its Subsidiaries on which the reserve report prepared by Cobb referred to in Parent’s Annual Report on Form 10-K for the fiscal year ended June 30, 2012 (the “Parent Reserve Report”) relied was accurate in all material respects at the time such data was provided to Cobb. With respect to the proved reserves reflected in the Parent Reserve Report, the Parent Reserve Report conforms in all material respects with Rule 4-10 of Regulation S-X promulgated by the SEC. Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, with respect to each lease, unit or well, Parent and its Subsidiaries are (i) entitled to not less than the “net revenue interest” and (ii) obligated to bear a percentage of the costs and expenses relating to the maintenance, development, operation and production of Hydrocarbons in an amount not greater than the “working interest”, in each case as shown on the Parent Reserve Report. Except as set forth in Section 4.15(b) of the Parent Disclosure Letter and except for changes (including changes in Hydrocarbon commodity prices) generally affecting the oil and gas industry, capital investment and normal depletion by production, and except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, there has been no change in respect of the matters addressed in the Parent Reserve Report.

(c) Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, all material items of operating equipment, pipelines and facilities owned or leased by Parent or any of its Subsidiaries and used in the operation of the Oil and Gas Properties forming the basis for the reserves reflected in the Parent Reserve Report are, in the aggregate, in a state of repair so as to be adequate to carry on the businesses of Parent and its Subsidiaries as presently conducted.

(d) Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, and except for goods and other property sold, used or otherwise disposed of since the date of the Parent Reserve Report in the ordinary course of business or reflected as having been sold, used or otherwise disposed of in the Parent SEC Documents, as of the date of this Agreement, Parent and its Subsidiaries own or have valid leases in or contractual rights to use all material operating equipment, pipelines and facilities used in the operation of their respective Oil and Gas Properties forming the basis for the reserves reflected in the Parent Reserve Report in the manner in which such properties were operated as of the date of this Agreement.

(e) Except for property sold or otherwise disposed of since the date of the Parent Reserve Report in the ordinary course of business or reflected as having been sold or otherwise disposed of in the Parent SEC Documents, as of the date of this Agreement, Parent and its Subsidiaries have Defensible Title to all Oil and Gas Properties forming the basis for the reserves reflected in the Parent Reserve Report, in each case relating to the interests referred to therein as of the date of such report, and in each case as attributable to interests owned by Parent and its Subsidiaries, free and clear of any Liens, except (i) Liens reflected in the Parent SEC Documents filed prior to the date of this Agreement, (ii) Permitted Liens, and (iii) such imperfections of title, easements, Liens, government or tribal approvals or other matters and failures of title as could not, individually or in the aggregate, reasonably be expected to have a Parent Material Adverse Effect.

(f) Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect or as set forth in Section 4.15(f) of the Parent Disclosure Letter, Parent and its Subsidiaries have paid all material royalties, overriding royalties and other burdens on production due by Parent and its Subsidiaries with respect to their respective Oil and Gas Properties forming the basis for the reserves reflected in the Parent Reserve Report (other than items that are being held in suspense).

(g) There are no assets constituting Parent’s Oil and Gas Properties (i) that are currently required to be Decommissioned pursuant to Laws or applicable Contracts that have not been Decommissioned, which failure to Decommission constitutes a Parent Material Adverse Effect; (ii) that formerly produced but that are currently shut in or temporarily abandoned not in compliance with Laws and applicable Contracts, which noncompliance constitutes a Parent Material Adverse Effect; or (iii) that have been Decommissioned but that have not been Decommissioned in compliance with Laws and applicable Contracts, which noncompliance constitutes a Parent Material Adverse Effect.

(h) The letters of credit and bonds set forth on Section 4.15(h) of the Parent Disclosure Letter are all Financial Assurance posted or provided by Parent and its Subsidiaries with or to any Governmental Entity or Third Party which are required to be posted or provided in compliance with Laws or applicable Contracts and related to the Oil and Gas Properties operated by Parent or any of its Subsidiaries.

(i) To Parent’s Knowledge, none of the material Oil and Gas Properties of Parent and its Subsidiaries forming the basis for the reserves reflected in the Parent Reserve Report is subject to any preferential purchase, consent or similar right that would become operative as a result of the transactions contemplated by this Agreement.

(j) Except as disclosed in Section 4.15(j) of the Parent Disclosure Letter, to Parent’s Knowledge, none of the Oil and Gas Properties of Parent and its Subsidiaries forming the basis for the reserves reflected in the Parent Reserve Report is subject to any tax partnership agreement or other provisions requiring a partnership income Tax Return to be filed under Subchapter K of Chapter 1 of Subtitle A of the Code.

(k) None of Parent or any of its Subsidiaries has received any material advance, take-or-pay or other similar payments that entitle purchasers of production from the Oil and Gas Properties forming the basis for the reserves reflected in the Parent Reserve Report to receive deliveries of Hydrocarbons without paying therefor.

(l) Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, none of Parent or any of its Subsidiaries has made any election as of the date of this Agreement to not participate in any operation or activity proposed with respect to their Oil and Gas Properties which could result in their interests in such Oil and Gas Properties being subject to a penalty or forfeiture as a result of such election not to participate in such operation or activity.

(m) Section 4.15(m) of the Parent Disclosure Letter sets forth, as of the date of this Agreement, a true and complete list of all authorities for expenditures or capital commitments relating to the Oil and Gas Properties of Parent and its Subsidiaries that bind Parent or its Subsidiary to spend, individually or in the aggregate, more than $4,000,000 on drilling or reworking wells or on other capital projects from and after the date of this Agreement.

(a) Except as, individually or in the aggregate, would not reasonably be expected to have a Parent Material Adverse Effect, (i) to Parent’s Knowledge, Parent and each of its Subsidiaries owns, or is licensed to use (in each case, free and clear of any Liens, other than Permitted Liens), all Intellectual Property used in its business as currently conducted; (ii) to Parent’s Knowledge, the conduct of its business as currently conducted, including the use of any Intellectual Property by Parent and its Subsidiaries, does not infringe on, misappropriate or otherwise violate the rights of any Person and is in accordance with any applicable license pursuant to which Parent or any Subsidiary acquired the right to use any Intellectual Property; (iii) to Parent’s Knowledge, no Person is challenging, infringing on, misappropriating or otherwise violating any right of Parent or any of its Subsidiaries with respect to any Intellectual Property owned by Parent or its Subsidiaries; and (iv) to Parent’s Knowledge, neither Parent nor any of its Subsidiaries has received any written notice or otherwise has Knowledge of any pending claim, Order or proceeding with respect to any Intellectual Property used by Parent and its Subsidiaries and to its Knowledge no Intellectual Property owned by Parent or its Subsidiaries is being used or enforced in a manner that would reasonably be expected to result in the abandonment, cancellation or unenforceability of such Intellectual Property.

(b) Parent and its Subsidiaries have taken reasonable steps to protect the confidentiality and value of all material trade secrets and any other material confidential information that are owned, used or held by Parent and its Subsidiaries in confidence, including entering into licenses and Contracts that require licensees, contractors, and other Persons with access to trade secrets or other confidential information to safeguard and maintain the secrecy and confidentiality of such trade secrets. To Parent’s Knowledge, such trade secrets have not been used, disclosed to or discovered by any Person except pursuant to a valid and appropriate non-disclosure agreement, license or any other appropriate Contract which has not been breached.

(c) The consummation of the transactions contemplated by this Agreement will not diminish or terminate the ownership of or rights in any material Intellectual Property owned or used by Parent or its Subsidiaries in their respective businesses as currently conducted and, except as would not reasonably be expected to have a Parent Material Adverse Effect, to Parent’s Knowledge, after the Closing Date Parent and its Subsidiaries will have the right to use such Intellectual Property on the same basis as prior to the consummation of the transactions contemplated by this Agreement.

(a) Parent and its Subsidiaries are in compliance with all Environmental Laws, and to Parent’s Knowledge, with respect to any surviving time periods specified in all applicable statutes of limitation, any past noncompliance by Parent and its Subsidiaries with Environmental Laws has been resolved, except for any failure to comply or to resolve past noncompliance that would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(b) Except as would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, (i) each of Parent and its Subsidiaries has, as applicable, developed and submitted or obtained, maintained and complied with all Environmental Permits necessary for the conduct and operation of its business as currently conducted and operated, and Parent or any applicable Subsidiary of Parent has not received any notice that any such Environmental Permit is not in full force and effect; and (ii) no such Environmental Permit is or will be subject to review, revision, major modification, voidance or prior consent by any Governmental Entity as a result of the consummation of the transactions contemplated by this Agreement.

(c) None of Parent or any of its Subsidiaries has received any notice of any violation of, or liability under, Environmental Laws or Environmental Permits or with respect to Hazardous Materials or the posting or provision of Parent’s Financial Assurance or performance of Decommissioning for Oil and Gas Properties operated by Parent or any of its Subsidiaries as required under Laws or applicable Contracts, which violations or liabilities would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(d) Except as set forth in Section 4.17(d) of the Parent Disclosure Letter, there are no pending or, to Parent’s Knowledge, threatened civil, criminal or administrative Actions, notices of violation, arbitrations or demand letters pursuant to Environmental Laws or Environmental Permits or with respect to Hazardous Materials or the posting or provision of Parent’s Financial Assurance or performance of Decommissioning for Oil and Gas Properties operated by Parent or any of its Subsidiaries as required under Laws or applicable Contracts, which, in each instance, is alleged against Parent or any of its Subsidiaries or, to Parent’s Knowledge, related to the Parent Owned Real Property or the Parent Leased Real Property or any other property previously owned or operated by Parent or any of its Subsidiaries for which Parent or any of its Subsidiaries retains any liabilities and that would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(e) Neither Parent nor any of its Subsidiaries has received written notice of a release and, to Parent’s Knowledge, none of them has other notice of a release of any Hazardous Materials on, at, or from the Parent Owned Real Property, the Parent Leased Real Property, or their Oil and Gas Properties, except for any release (i) that is (A) in compliance with Environmental Laws or Environmental Permits and (B) occurring in a manner or in quantities or locations that would not require any investigation or remediation of soil or groundwater or any other environmental media, including in an offshore environment, under Environmental Laws, or (ii) that would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(f) Neither Parent nor any of its Subsidiaries has transported or disposed of, or arranged for the transport or disposal of any Hazardous Material at or to any off-site location which, to Parent’s Knowledge, has resulted in, or would reasonably be expected to result in, a liability to Parent that has had, or would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(g) To Parent’s Knowledge, there are no Liens applicable to any Parent Owned Real Property, Parent Leased Real Property or its Oil and Gas Properties arising out of or pursuant to Environmental Laws that have had, or would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(h) To Parent’s Knowledge, there are no other circumstances or conditions relating to Parent’s Owned Real Property, Leased Real Property or its Oil and Gas Properties or Parent’s operations associated therewith, including with respect to Environmental Permits, Hazardous Materials, Parent’s Financial Assurances and Decommissioning that have resulted in or would reasonably be expected to result in, Parent incurring a liability or obligation, pursuant to any Environmental Laws and that has had, or would reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(i) Parent has provided to the Company true and complete copies of, or access to, all written environmental assessment reports that have been prepared by or on behalf of Parent or any of its Subsidiaries and that are in Parent’s or any of its Subsidiaries’ possession.

Section 4.18 Insurance. Except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, (a) each insurance policy under which Parent or any of its Subsidiaries is an insured or otherwise the principal beneficiary of coverage (collectively, the “Parent Insurance Policies”) is in full force and effect, all premiums due thereon have been paid in full and Parent and its Subsidiaries are in compliance with the terms and conditions of such Parent Insurance Policy; (b) neither Parent nor any of its Subsidiaries is in breach or default under any Parent Insurance Policy; and (c) no event has occurred which, with notice or lapse of time, would constitute such breach or default, or permit termination or modification, under any Insurance Policy.

(a) Neither Parent nor any of its Subsidiaries is (i) an “investment company” or a company “controlled” by an “investment company” within the meaning of the Investment

Company Act of 1940, as amended, and the rules and regulations promulgated thereunder or (ii) a “holding company,” a “subsidiary company” of a “holding company,” an “affiliate” of a “holding company,” a “public utility” or a “public-utility company,” as each such term is defined in the Public Utility Holding Company Act of 2005. All natural gas pipeline systems and related facilities constituting Parent’s or any of its Subsidiaries’ properties are (A) “gathering facilities” that are exempt from regulation by the FERC under the Natural Gas Act of 1938, as amended; and (B) not subject to rate regulation or comprehensive nondiscriminatory access regulation under the laws of any state or other local jurisdiction.

(b) Except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, each of Parent and its Subsidiaries holds all licenses, permits, franchises, variances, registrations, exemptions, Orders and other governmental authorizations, consents, approvals and clearances, and has submitted notices to, all Governmental Entities necessary for the lawful operating of the businesses of Parent or any of its Subsidiaries as currently conducted (the “Parent Permits”), and all such Parent Permits are valid, and in full force and effect. Since July 1, 2010, there has not occurred any violation of, default (with or without notice or lapse of time or both) under, or event giving to others any right of termination, amendment or cancellation of, with or without notice or lapse of time or both, any Parent Permit, except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect. Parent and each of its Subsidiaries are in compliance in all material respects with the terms of all Parent Permits, and no event has occurred that, to Parent’s Knowledge, would reasonably be expected to result in the revocation, cancellation, non-renewal or adverse modification of any Parent Permit, in each case, except as has not had, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect.

(c) For the avoidance of doubt, the provisions of this Section 4.19 do not apply to Environmental Laws, Environmental Permits or Hazardous Materials, as representations and warranties made by the Company and its Subsidiaries with regard to all environmental matters, including Environmental Laws, Environmental Permits and Hazardous Materials, are solely and exclusively made in Section 4.17 of this Agreement.

Section 4.20 Interested Party Transactions. Except as disclosed in Section 4.20 of the Parent Disclosure Letter, since January 1, 2011, there have been no transactions, agreements, arrangements or understandings between Parent or any of its Subsidiaries on the one hand, and the Affiliates of Parent on the other hand (other than Parent’s Subsidiaries), that would be required to be disclosed under Item 404 of Regulation S-K under the Exchange Act and that has not been so disclosed.

Section 4.21 Parent Information. The information relating to Parent or any Subsidiary of Parent to be included or incorporated by reference in the Joint Proxy Statement and the Form S-4 will not, at the time the Form S-4 is declared effective, the time the Joint Proxy Statement is first mailed to stockholders of the Company and Parent and the time of the Company Stockholder Meeting and the Parent Stockholder Meeting, contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in light of the circumstances in which they are made, not misleading. The information relating to Parent or any Subsidiary of Parent that is provided or to be provided by Parent or its Representatives for

inclusion in any document (other than the Form S-4) filed with any other Governmental Entity in connection with the transactions contemplated by this Agreement will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in light of the circumstances in which they are made, not misleading. All documents that Parent is responsible for filing with the SEC in connection with the Merger or the other transactions contemplated hereby (including the Joint Proxy Statement and the Form S-4) (except for such portions thereof that relate only to the Company or any of its Subsidiaries) will comply as to form and substance in all material respects with the provisions of the Securities Act and the Exchange Act.

Section 4.22 Derivatives. Section 4.22 of the Parent Disclosure Letter contains an accurate and complete list of all outstanding Derivative positions of Parent and its Subsidiaries, including Hydrocarbon and financial Derivative positions attributable to the production and marketing of Parent and its Subsidiaries, as of the date reflected therein.

Section 4.23 Parent Ownership of Company Securities. Prior to the Company Board approving this Agreement, the Merger and the other transactions contemplated hereby for purposes of the applicable provisions of the DGCL, neither Parent nor Merger Sub or any of their respective Subsidiaries, alone or together with any other Person, was at any time, or became, an “interested stockholder” (as such term is defined in Section 203 of the DGCL) thereunder or has taken any action that would cause any anti-takeover statute under the DGCL or other applicable state Law to be applicable to this Agreement, the Merger, or any of the transactions contemplated hereby. None of Parent or any of its Subsidiaries has any direct or indirect beneficial ownership, or sole or shared voting power, with respect to any shares of Company Common Stock.

Section 4.24 Opinion of Financial Advisor. Parent has received the opinion of Petrie Partners Securities, LLC, financial advisor to Parent (the “Parent Financial Advisor”), to the effect that, as of the date of this Agreement, and based upon and subject to the factors and assumptions set forth therein, the Exchange Ratio is fair to Parent from a financial point of view.

Section 4.25 Brokers and Finders. Neither Parent nor any of its Subsidiaries has employed any broker or finder or incurred any liability for any brokerage fees, commissions or finder’s fees in connection with the Merger or the other transactions contemplated by this Agreement, except that Parent has retained the Parent Financial Advisor, and Parent has heretofore made available to the Company a true and complete copy of all agreements between Parent and the Parent Financial Advisor pursuant to which such firm would be entitled to any payment relating to the Merger and the other transactions contemplated by this Agreement.

(a) Except as set forth in Section 4.26(a) of the Parent Disclosure Letter, neither Parent nor any of its Subsidiaries has (i) any obligation or has made any commitment to acquire any Equity Interest, to provide funds to, or to make any investment (in the form of a loan, capital contribution or otherwise) in any of Parent’s Related Entities or any Subsidiary of any such Related Entities; (ii) any indemnity obligations, or any guarantees of any Indebtedness for borrowed money with respect to any of Parent’s Related Entities or any Subsidiary of any

such Related Entities; or (iii) as of the date of this Agreement, any material outstanding payables, receivables, loans, advances or other accounts, in each case with respect to any of the Parent’s Related Entities or any Subsidiary of any such Related Entities.

(b) Except as set forth in Section 4.26(b) of the Parent Disclosure Letter, to Parent’s Knowledge, neither Parent nor any of its Subsidiaries has any obligations or liabilities, whether actual or contingent, with respect to any incentive, bonus, deferred compensation, vacation, holiday, cafeteria, medical, disability, stock purchase, stock option, stock appreciation, phantom stock, restricted stock, restricted stock unit, stock-based compensation, change-in-control, retention, employment, consulting, personnel or severance policies, programs, practices, Contracts or arrangements with respect to any of Parent’s Related Entities or any Subsidiary of any such Related Entities.

(c) Section 4.26(c) of the Parent Disclosure Letter sets forth a true and correct list of all Contracts between Parent and/or any of its Subsidiaries and any of Parent’s Related Entities or any Subsidiary of any such Related Entities (the “Parent Related Entity Contracts”). Except, in each case, as has not, and would not reasonably be expected to have, individually or in the aggregate, a Parent Material Adverse Effect, (i) all Parent Related Entity Contracts are valid and binding on Parent and/or the relevant Subsidiary of Parent that is a party thereto and, to Parent’s Knowledge, each other party thereto, subject to the Bankruptcy and Equity Exception; (ii) all Parent Related Entity Contracts are in full force and effect; (iii) Parent and each of its Subsidiaries have performed all material obligations required to be performed by them under the material Parent Related Entity Contracts to which they are parties; and (iv) to Parent’s Knowledge, each other party to a material Parent Related Entity Contract has performed all material obligations required to be performed by it under such material Parent Related Entity Contract.

(d) Section 4.26(d) of Parent Disclosure Letter sets forth, as of the date of this Agreement, for each of Parent’s Related Entities, the number of outstanding shares of capital stock or other Equity Interests and type(s) of such shares or other Equity Interests owned by Parent or its Subsidiaries. Parent owns directly or indirectly, beneficially and of record, all of such shares of capital stock or other Equity Interests, free and clear of any Liens other than Permitted Liens and Liens created under the applicable Parent Related Entity Contracts.

(a) Except for the representations and warranties made in this Article IV, neither Parent, Merger Sub nor any other Person makes any express or implied representation or warranty with respect to Parent, Merger Sub or their Subsidiaries or Related Entities or their respective businesses, operations, assets, liabilities, conditions (financial or otherwise) in connection with this Agreement or the transactions contemplated hereby, and Parent hereby disclaims any such other representations or warranties. In particular, without limiting the foregoing disclaimer, none of Parent, Merger Sub or any other Person makes or has made any representation or warranty to the Company or any of its Affiliates or Representatives with respect to (a) any financial projection, forecast, estimate, budget or prospect information relating to Parent, Merger Sub any of their Subsidiaries or Related Entities or their respective businesses; or (b) except for the representations and warranties made by Parent and Merger Sub in this

Article IV, any oral or written information presented to the Company or any of its Affiliates or Representatives in the course of their due diligence investigation of Parent and Merger Sub, the negotiation of this Agreement or in the course of the transactions contemplated hereby.

(b) Parent and Merger Sub each acknowledge and agree that it has (i) had the opportunity to meet with the management of the Company and to discuss the business, assets and liabilities of the Company and its Subsidiaries and Related Entities; (ii) been afforded the opportunity to ask questions of and receive answers from officers of the Company; and (iii) conducted its own independent investigation of the Company and its Subsidiaries and Related Entities, their respective businesses, assets, liabilities and the transactions contemplated by this Agreement.

(c) Notwithstanding anything contained in this Agreement to the contrary, each of Parent and Merger Sub acknowledges and agrees that neither the Company or any other Person has made or is making any representations or warranties relating to the Company or its Subsidiaries or Related Entities whatsoever, express or implied, beyond those expressly given by the Company in Article III, including any implied representation or warranty as to the accuracy or completeness of any information regarding the Company furnished or made available to Parent, Merger Sub, or any of their Representatives. Without limiting the generality of the foregoing, each of Parent and Merger Sub acknowledges that no representations or warranties are made with respect to any projections, forecasts, estimates, budgets or prospect information that may have been made available to Parent, Merger Sub or any of their Representatives.

Section 5.1 Conduct of Businesses Prior to the Effective Time. From the date of this Agreement, except as (a) expressly contemplated or permitted by this Agreement, (b) required by applicable Law, (c) as consented to in writing by Parent or the Company, as applicable (such consent not to be unreasonably withheld, delayed or conditioned), or (d) set forth in Section 5.1 of the Company Disclosure Letter or Parent Disclosure Letter, as applicable, each of Parent and the Company shall, and shall cause each of its respective Subsidiaries to, (i) conduct its business in all material respects in the usual, regular and ordinary course in substantially the same manner as heretofore conducted; and (ii) to the extent consistent with clause (i), use reasonable best efforts to maintain and preserve intact its business organization, employees, advantageous business relationships (including with its customers and suppliers), Company Permits or Parent Permits, as applicable, and retain the services of its key officers and key employees.

Section 5.2 Forbearances. Without limiting the generality of Section 5.1 above, except as set forth in Section 5.2 of the Company Disclosure Letter or the Parent Disclosure Letter, as applicable, and except as expressly contemplated or permitted by this Agreement or as required by applicable Law, neither the Company nor Parent shall, and neither the Company nor Parent shall permit any of its Subsidiaries to, without the prior written consent of Parent or the Company, as applicable (such consent not to be unreasonably withheld, delayed or conditioned):

(a) (i) other than dividends and distributions by a direct or indirect Subsidiary to such Party or any direct or indirect wholly-owned Subsidiary of such Party, declare, set aside or pay any dividends on, make any other distributions in respect of, or enter into any agreement with respect to the voting of, any of its capital stock; (ii) split, combine or reclassify any of its capital stock or issue or authorize the issuance of any other securities in respect of, in lieu of, or in substitution for, shares of its capital stock, except upon the exercise of stock options or settlement of stock units that are outstanding as of the date of this Agreement in accordance with their present terms; or (iii) purchase, redeem or otherwise acquire any shares of its capital stock or other securities or any of its Subsidiaries, or any rights, warrants or options to acquire any such shares or other securities (other than the withholding of shares of common stock to satisfy the exercise price or Tax withholding upon the exercise of stock options, vesting of restricted shares or settlement of stock units, in each case that are outstanding as of the date of this Agreement in accordance with their present terms and such Party’s practices as of the date of this Agreement);

(b) issue, deliver, sell, pledge or otherwise encumber or subject to any Lien any shares of its capital stock, any other voting securities, including any restricted shares of its common stock, or any securities convertible into, or any rights, warrants or options to acquire, any such shares, voting securities or convertible securities, including any stock options and unit awards (other than (i) the issuance of its common stock upon the exercise of stock options or vesting of restricted shares, in each case that are outstanding as of the date of this Agreement in accordance with their present terms; (ii) the issuance of up to 50,000 Company Stock Options to new employees in the ordinary course of business consistent with past practice; or (iii) the issuance of Company Common Stock under the Company Stock Plan pursuant to the Company’s Director Compensation Plan existing on the date of this Agreement up to a fair market value of $225,000 in the aggregate);

(c) amend its articles of incorporation, bylaws or other comparable organizational documents or the organizational documents of any of its Subsidiaries;

(d) acquire or agree to acquire by merging or consolidating with, or by purchasing any assets or any equity securities of, or by any other manner, any business or any Person, or otherwise acquire or agree to acquire any assets, in each case, except for (i) acquisitions of Oil and Gas Properties, equipment, inventory or other assets related to the ownership or operation of Oil & Gas Properties in the ordinary course of business consistent with past practice and (ii) acquisitions for amounts that, in the aggregate, do not exceed $5,000,000; provided, however, that no acquisition otherwise permitted by the foregoing clauses (i) or (ii) may be made to the extent it may reasonably be expected to prevent, materially delay or materially impede the consummation of the transactions contemplated by this Agreement;

(e) sell, assign, transfer, lease, license, mortgage or otherwise encumber or subject to any Lien (other than Permitted Liens), or otherwise dispose of any of its properties or assets or create any security interest in such assets or properties that have a fair market value in excess of $5,000,000 in the aggregate, in each case, other than in the ordinary course of business consistent with past practice (including disposing of, selling, assigning, transferring, leasing, licensing, mortgaging or otherwise encumbering Oil and Gas Properties and related assets in the ordinary course of business consistent with past practice);

(f) except for borrowings under the Credit Agreements that are incurred in the ordinary course of business consistent with past practice, or Indebtedness owed by any wholly-owned Subsidiary to such Party or any other wholly-owned Subsidiary of such Party, incur, redeem, prepay, repurchase, defease, cancel, or modify the terms of, any Indebtedness or assume, guarantee or endorse, or otherwise become responsible for the Indebtedness of any Person (other than any of its wholly-owned Subsidiaries);

(g) make any loans or advances to any Person other than its wholly-owned Subsidiaries or as a result of ordinary advances and reimbursements to employees;

(h) change in any material respect its accounting methods (or underlying assumptions), principles or practices affecting its assets, liabilities or business, including any reserving, renewal or residual method, practice or policy, in each case, in effect on the date of this Agreement, except as required by changes in GAAP or regulatory accounting principles;

(i) make investments in Persons (other than in any of its wholly-owned Subsidiaries or any Related Entity) in excess of $5,000,000 in the aggregate, whether by purchase of stock or securities, contributions to capital, property transfers, or entering into binding agreements with respect to any such investment or acquisition;

(j) make, change or revoke any material Tax election, change an annual Tax accounting period, adopt or change any material Tax accounting method, file any material amended Tax Return, enter into any closing agreement with respect to a material amount of Taxes, settle any material claim or assessment from a Tax Authority or surrender any right to claim a refund of a material amount of Taxes;

(k) except as expressly permitted by any other provision of this Section 5.2 or as set forth in Section 5.2 of the Company Disclosure Letter or the Parent Disclosure Letter, terminate or waive any material provision of any Company Material Contract or Parent Material Contract, as applicable, other than normal renewals of such Contracts without materially adverse changes, additions or deletions of terms, or enter into or renew any agreement or contract or other binding obligation of such Party or its Subsidiaries containing (i) any restriction on the ability of such Party and its Subsidiaries, or, after the Merger, Parent and its Subsidiaries (including the Company), to conduct their businesses as presently conducted or currently contemplated to be conducted after the Merger or (ii) any restriction on such Party or its Subsidiaries, or, after the Merger, Parent and its Subsidiaries (including the Company), in engaging in any type of activity or business;

(l) (i) incur any capital expenditures or (ii) enter into any Contract obligating such Party to make capital expenditures, except, in each case, for (A) capital expenditures made in accordance with such Party’s existing capital plan for 2013 as in effect as of the date of this Agreement (which plan is set forth in Section 5.2 of the Company Disclosure Letter or the Parent Disclosure Letter, as applicable); or (B) to the extent not reflected on such capital plan, capital expenditures not in excess of $5,000,000 in the aggregate with respect to the Company and $10,000,000 in the aggregate with respect to Parent;

(m) except as required by agreements or instruments in effect on the date of this Agreement, alter in any material respect, fail to satisfy or enter into any commitment to alter in any material respect, any material interest in any corporation, association, joint venture, partnership or business entity in which such Party directly or indirectly holds any equity or ownership interest on the date of this Agreement;

(n) except as required by the terms of Company Benefit Plans or Company Employment Agreements, or the terms of Parent Benefit Plans or Parent Employment Agreements, as applicable, as in effect on the date of this Agreement or as required by applicable Law or as provided by this Agreement, or as in the ordinary course of business consistent with past practice, (i) grant or pay to any current or former director, officer, employee or consultant of the Company or any of its Subsidiaries or Parent or any of its Subsidiaries, as applicable, any increase in compensation, except for annual or promotional salary or wage increases in the ordinary course of business consistent with past practice not to exceed, in the aggregate for all such increases, 10% of the aggregate wage and salary expense for the prior year to the Company and its Subsidiaries or Parent and its Subsidiaries, as applicable, on a consolidated basis, except Parent may grant or pay to both (A) the estate of its immediate past Chairman who served prior to April 19, 2013 the incentive bonuses for the fiscal year that ends June 30, 2013 and (B) its current Chairman, President and Chief Executive Officer the incentive bonuses for the fiscal year that ends June 30, 2013 and the fiscal year that will begin July 1, 2013, in accordance with the criteria previously approved by the Parent Board, which bonuses shall not exceed the individual amounts set forth in Section 5.2(n) of the Parent Disclosure Schedule; (ii) grant, pay, promise to pay, or enter into any Company Benefit Plan or Company Employment Agreement or Parent Benefit Plan or Parent Employment Agreement, as applicable, to pay, to any current or former director, officer, employee, consultant or service provider of the Company or any of its Subsidiaries or Parent or any of its Subsidiaries, as applicable, any severance, retention, change in control or termination pay or any increase in actual or potential severance, retention, change in control or termination pay, except to Parent Employees who will be employed by Parent for six months or less following the Effective Time in an amount not to exceed $1,500,000 in the aggregate; (iii) increase the compensation or benefits provided or payable under any Company Benefit Plan or Company Employment Agreement or Parent Benefit Plan or Parent Employment Agreement, as applicable; (iv) modify the terms of any equity-based award granted under any Company Stock Plan or Parent Stock Plan, as applicable; (v) make any discretionary contributions or payments with respect to any Company Benefit Plan or Company Employment Agreement or Parent Benefit Plan or Parent Employment Agreement, as applicable, to any trust or other funding vehicle; (vi) accelerate the payment or vesting of any payment or benefit provided or to be provided to any director, officer, employee or consultant of the Company or any of its Subsidiaries or Parent or any of its Subsidiaries, as applicable, or otherwise pay any amounts not due such individual, except to Parent Employees who will be employed by Parent for six months or less following the Effective Time; (vii) enter into any new or amend or modify any existing Company Employment Agreement or Parent Employment Agreement, as applicable, (or agreement that would be a Company Employment Agreement or Parent Employment Agreement, as applicable, if in effect on the date of this Agreement), other than employment agreements for new hires with an annual compensation not exceeding $250,000 in the aggregate; (viii) establish any new or amend or modify any existing Company Benefit Plans or Parent Benefit Plans, as applicable, (or plans that would be a Company Benefit Plan or Parent Benefit Plan, as applicable, if in effect on the date of this Agreement); or (ix) establish, adopt or enter into any collective bargaining agreement;

(o) except as set forth in Section 5.2 of the Company Disclosure Letter or the Parent Disclosure Letter, pay, discharge, settle, waive, release or assign or compromise any legal action, litigation, arbitration, suit, investigation or proceeding, other than any such payment, discharge, settlement or compromise (i) that involves solely money damages in an amount not in excess of $5,000,000 in the aggregate, and that does not create binding precedent for other pending or potential legal action, litigation, arbitration or proceeding, or (ii) pursuant to the terms of any Contract in effect on the date of this Agreement (copies of which have been provided to the Other Party prior to the date of this Agreement);

(p) take any action, or knowingly fail to take any action within its control, which action or failure to act would reasonably be expected to prevent the Merger from qualifying as a “reorganization” within the meaning of Section 368(a) of the Code;

(q) adopt or enter into a plan of complete or partial liquidation, dissolution, merger, consolidation, restructuring, recapitalization or other reorganization of such Party or any of its Subsidiaries (other than the Merger);

(r) fail to maintain in full force and effect the material insurance policies covering such Party and its Subsidiaries and their respective properties, assets and business in a form and amount consistent with past practices;

(s) enter into any hedging Contracts not in the ordinary course of business consistent with past practice;

(t) purchase or otherwise acquire, directly or indirectly (including by way of providing financing), any Equity Interests in the Other Party or any of the Other Party’s Subsidiaries; or

(u) commit or agree to take any of the actions contemplated by Section 5.2(a) through (t) above.

Section 5.3 No Control of the Other Party’s Business. Nothing contained in this Agreement shall give Parent, directly or indirectly, the right to control or direct the operations of the Company, or shall give the Company, directly or indirectly, the right to control or direct the operations of Parent prior to the Effective Time. Prior to the Effective Time, each of the Company and Parent shall exercise, consistent with the terms and conditions of this Agreement, complete control and supervision over its and its Subsidiaries’ respective operations.

Section 6.1 Proxy Statement; Registration Statement. Parent and the Company shall, as promptly as reasonably practicable following the date of this Agreement, prepare and file with the SEC a proxy statement relating to the meetings of the Company’s stockholders and Parent’s

stockholders to be held in connection with this Agreement and the transactions contemplated by this Agreement (together with any amendments or supplements thereto, the “Joint Proxy Statement”) and a registration statement on Form S-4 (together with any amendments or supplements thereto, the “Form S-4”), in which the Joint Proxy Statement will be included as a prospectus. Each of Parent and the Company shall, upon the reasonable request by the Other Party, furnish to the Other Party all information as may be reasonably necessary or advisable in connection with the Joint Proxy Statement or the Form S-4. Each of Parent and the Company shall use its reasonable best efforts to have the Form S-4 declared effective under the Securities Act as promptly as reasonably practicable after such filing and to keep the Form S-4 effective as long as necessary to consummate the transactions contemplated by this Agreement. Each of the Parties shall mail or deliver the Joint Proxy Statement to its respective stockholders as promptly as reasonably practicable after the Form S-4 has been declared effective under the Securities Act. Parent may file the opinion described in Section 7.2(c), and the Company may file the opinion described in Section 7.3(c), in each case with the SEC by post-effective amendment to the Form S-4. Parent shall also use its reasonable best efforts to obtain all necessary state securities Law or “blue sky” permits and approvals required to carry out the transactions contemplated by this Agreement, and the Company shall furnish all information concerning it and the holders of Company Common Stock as may be reasonably requested in connection with any such action. Each of Parent and the Company shall, as promptly as reasonably practicable after receipt thereof, provide the Other Party copies of any written comments and advise the Other Party of any oral comments, with respect to the Joint Proxy Statement and/or the Form S-4 received from the SEC. Each Party shall also advise the Other Party, as promptly as reasonably practicable after receipt of notice thereof, of the time when the Form S-4 has become effective, the issuance of any stop order, or the suspensions of the qualification of the Parent Common Stock issuable in connection with the Merger for offering or sale in any jurisdiction. The Parties shall cooperate and provide the Other Party with a reasonable opportunity to review and comment on any amendment or supplement to the Joint Proxy Statement and the Form S-4 prior to filing such with the SEC and will provide the Other Party with a copy of all such filings with the SEC to the extent not otherwise publicly available. If at any time prior to the Effective Time, Parent or the Company has Knowledge of any information relating to Parent or the Company, or any of their respective officers, directors or other Affiliates, which should be set forth in an amendment or supplement to the Form S-4 or the Joint Proxy Statement so that any such document would not include any misstatement of a material fact or omit to state any material fact necessary to make the statements therein, in light of the circumstances under which they were made, not misleading, the Party that discovers such information shall promptly notify the Other Party and, to the extent required by applicable Laws, an appropriate amendment or supplement describing such information shall be filed as promptly as reasonably practicable with the SEC and, to the extent required under applicable Law, disseminated to the stockholders of Parent and the Company. Notwithstanding anything contained in this Agreement to the contrary, no amendment or supplement (including by incorporation by reference) to the Joint Proxy Statement or the Form S-4 shall be made without the approval of both Parent and the Company, which approval shall not be unreasonably withheld, delayed or conditioned; provided, however, that the Company, in connection with a Change in Company Recommendation, and Parent, in connection with a Change in Parent Recommendation, may amend or supplement the Joint Proxy Statement and/or the Form S-4 (including by incorporation by reference) pursuant to a Qualifying Amendment to effect such a change, and in such event, this right of approval shall apply only

with respect to information relating to the Other Party or its business, financial condition or results of operations, and shall be subject to the right of each Party to have its Board’s deliberations and conclusions be accurately described. A “Qualifying Amendment” means an amendment or supplement to the Joint Proxy Statement or the Form S-4 (including by incorporation by reference) to the extent that it contains (a) a Change in Company Recommendation or a Change in Parent Recommendation (as the case may be), (b) a statement of the reasons of the Company Board or Parent Board (as the case may be) for making such Change in Company Recommendation or a Change in Parent Recommendation (as the case may be), and (c) additional information reasonably related to the foregoing.

(a) Upon reasonable notice and subject to applicable Law, each of the Company and Parent shall, and shall cause each of its Subsidiaries to, afford to the Other Party and its Representatives reasonable access, at such Other Party’s expense, during normal business hours, to all of its properties, books, Contracts, commitments, financial and operating data, records, and officers and employees and, during such period, the Parties shall, shall cause their respective Subsidiaries to, and shall use their reasonable best efforts to cause their Representatives to, make available to the Other Party all other information concerning their businesses, properties and personnel as the Other Party may reasonably request. Each of the Company and Parent shall, and shall cause each of its Subsidiaries to, provide to the Other Party, to the extent not publicly available, a copy of each report, schedule, registration statement and other document filed by it during such period pursuant to the requirements of the federal securities Laws. Neither the Company nor Parent nor any of their Subsidiaries shall be required to provide access to or to disclose information if it would unreasonably disrupt the operations of such Party or any of its Subsidiaries or where such Party determines in good faith, after consultation with legal counsel, that such access or disclosure is reasonably likely to jeopardize the attorney-client or other legal privilege of such Party or its Subsidiaries or contravene any Law, Order or binding agreement. If any material is withheld by such Party pursuant to the preceding sentence, such Party shall inform the Other Party as to the general nature of what is being withheld.

(b) All information and materials provided pursuant to this Agreement shall be subject to the provisions of the Confidentiality Agreement.

(c) No investigation by either of the Parties or their respective Representatives shall have any effect for the purpose of determining the accuracy of the representations and warranties of the Other Party set forth in this Agreement.

Section 6.3 Stockholder Meetings. The Company and Parent shall each establish a record date for, duly call, give notice of, convene and hold a meeting of their respective stockholders to be held for the purpose of obtaining the requisite stockholder approval required in connection with this Agreement and the Merger (the “Company Stockholder Meeting” and the “Parent Stockholder Meeting,” respectively), and each shall use its reasonable best efforts to cause such meeting to occur as soon as reasonably practicable after the Form S-4 is declared effective. The Company and Parent shall each use their reasonable best efforts to cause the Company Stockholder Meeting and the Parent Stockholder Meeting to be held on the same day

at substantially the same time. The Company Board has resolved to recommend to the Company’s stockholders that such stockholders vote in favor of the adoption of this Agreement, the Merger and the other transactions contemplated by this Agreement (the “Company Recommendation”). Unless otherwise agreed by the Parties, this Agreement and the Merger shall be submitted to the stockholders of the Company at the Company Stockholder Meeting for the purpose of obtaining the Company Stockholder Approval, and the Company and its Board shall use their reasonable best efforts to solicit and obtain the Company Stockholder Approval. The Parent Board has resolved to recommend to its stockholders that such stockholders vote in favor of the Parent Share Issuance (the “Parent Recommendation”). Unless otherwise agreed by the Parties, the Parent Share Issuance shall be submitted to the stockholders of Parent at the Parent Stockholder Meeting for the purpose of obtaining the Parent Stockholder Approval, and Parent and its Board shall use their reasonable best efforts to solicit and obtain the Parent Stockholder Approval. The Company and Parent shall not postpone or adjourn the Company Stockholder Meeting or the Parent Stockholder Meeting, as applicable, except to the extent required by applicable Law or to solicit additional proxies and votes in favor of (a) in the case of the Company, the adoption of this Agreement if sufficient votes to constitute the Company Stockholder Approval have not been obtained; or (b) in the case of Parent, the Parent Share Issuance if sufficient votes to constitute the Parent Stockholder Approval have not been obtained; provided, however, that unless otherwise agreed to by the Parties, neither the Company Stockholder Meeting nor the Parent Stockholder Meeting may be postponed or adjourned to a date that is more than 20 Business Days after the date for which the Company Stockholder Meeting or the Parent Stockholder Meeting, as the case may be, was originally scheduled (excluding any adjournments or postponements required by applicable Law).

Section 6.4 Legal Conditions to Merger. Upon the terms and subject to the conditions set forth in this Agreement, each of Parent and the Company shall, and shall cause its Subsidiaries to, use their reasonable best efforts (a) to take, or cause to be taken, all actions necessary, proper or advisable to comply as promptly as reasonably practicable with all legal requirements that may be imposed on such Party or its Subsidiaries with respect to the Merger, the Parent Share Issuance and the other transactions contemplated by this Agreement (including the furnishing of information for, and the preparation and filing of, all necessary and proper statements, forms, registrations, filings, notices, representation letters, and declarations related to the Merger); (b) to cause the conditions set forth in Article VII to be satisfied and to consummate the transactions contemplated by this Agreement in a reasonably expeditious manner; and (c) to obtain (and to cooperate with the Other Party to obtain) any material consent, authorization, Order or approval of, or any exemption or waiver by, any Governmental Entity (including any Requisite Approvals) and any other Third Party that is required to be obtained by the Company or Parent or any of their respective Subsidiaries in connection with the Merger and the other transactions contemplated by this Agreement. Upon either Party’s receipt of a communication from any Governmental Entity that causes such Party to believe that there is a reasonable likelihood that any Stockholder Approval will not be obtained or that the receipt of any required consent or approval may be materially delayed, such Party shall promptly (i) advise the Other Party and (ii) to the extent permitted by Law, provide the Other Party with a copy of such communication.

Section 6.5 NYSE Listing. Parent shall cause the shares of Parent Common Stock to be issued in the Merger and such other shares of Parent Common Stock to be reserved for

issuance in connection with the Merger to be approved for listing on the NYSE, subject to official notice of issuance as promptly as reasonably practicable after the date of this Agreement, and in any event, prior to the Closing Date.

(a) To the extent that employees of Parent or its Affiliates (including employees of Parent or its Affiliates who are employed under a co-employment relationship with a professional employer organization that provides employee services to Parent or its Affiliates) immediately prior to the Effective Time remain employed by Parent, or any of its Affiliates (including through co-employment with such professional employer organization) after the Effective Time (the “Parent Employees”), each such Parent Employee will receive a base salary or hourly rate of pay, as applicable, at least equal to that in effect for such Parent Employee immediately prior to the Effective Time until the date that is one year after the Effective Time. All Parent Employees and other Persons listed in Section 6.6(a) of the Parent Disclosure Letter shall continue to be entitled to any deferred bonus previously granted by Parent or its Subsidiaries prior to the date of this Agreement, such bonuses in the aggregate not to exceed the amount set forth on Section 6.6(a) of the Parent Disclosure Letter. Beginning on the date that is one year after the Effective Time, the base salary or hourly rate of pay, as applicable, for any Parent Employee who remains employed by the Parent or any of its Affiliates (including through co-employment with such professional employer organization) may be adjusted as deemed appropriate by Parent.

(b) The Parties shall cause each benefit plan in which employees of the Company or any of its Affiliates immediately prior to the Effective Time who remain employed by the Parent or any of its Affiliates immediately following the Effective Time (the “Company Employees”) are eligible to participate after the Effective Time to take into account, to the extent consistent and compatible with the terms of the applicable benefit plan, for purposes of eligibility, vesting and benefit accrual under such benefit plans, the service of the Company Employees with the Company and its Affiliates to the same extent as such service was credited for such purpose by the Company or its Affiliates; provided, however, that such credited service shall not result in a duplication of benefits. With respect to Parent Employees, the Parties shall cause each benefit plan in which Parent Employees are eligible to participate to take into account, to the extent consistent and compatible with the terms of the applicable benefit plan, for purposes of eligibility, vesting and benefit accrual under such benefit plans, the service of the Parent Employees with Parent, its Affiliates and such professional employer organization to the same extent as such service was credited for such purpose by Parent, its Affiliates, or such professional employer organization; provided, however, that such credited service shall not result in a duplication of benefits. Nothing herein shall limit the ability of Parent or its Affiliates to amend or terminate any of the Company Benefit Plans or Parent Benefit Plans in accordance with their terms after the Effective Time.

(c) If Parent Employees become eligible to participate in Company Benefit Plans that are health plans, to the extent allowable by the applicable insurance carrier, if any, or applicable plan, the Parties shall use commercially reasonable efforts to cause each such plan to (i) waive any preexisting condition limitations to the extent such conditions are covered under the applicable life, disability, medical, health or dental plans, (ii) honor under such plans any

deductible, co-payment and out-of-pocket expenses incurred by such employees and their beneficiaries during the portion of the calendar year prior to such participation and (iii) waive any waiting period limitation or evidence of insurability requirement which would otherwise be applicable to such employee on or after the Effective Time for the year in which the Effective Time or participation in such plans, as applicable, occurs.

(d) At a date determined by Parent after the Effective Time, the accounts (including any loan balances) of Parent Employees in the 401(k) savings plan in which Parent Employees participate will be transferred to the Company’s 401(k) savings plan, in accordance with the requirements of the applicable plan and of applicable Law. The Company shall make such amendments to the Company’s 401(k) savings plan, and shall take such other actions, as may be necessary or appropriate to effectuate the transfer of Parent Employees’ 401(k) plan accounts.

(e) For the applicable fiscal year in which the Effective Time occurs, the Parent Employees (other than the estate of Parent’s immediate past Chairman and Parent’s current Chairman, President and Chief Executive Officer, as provided below), and the Company Employees will be eligible to receive an annual bonus that will be calculated as follows: (i) solely with respect to the Company Employees, for the period that begins on the first day of the applicable fiscal year in which the Effective Time occurs and ends on the date of the Effective Time, a pro-rated performance-based bonus determined and calculated pursuant to the attainment of the applicable performance goals in their respective annual incentive plans in effect immediately prior to the Effective Time, pro-rated based on the number of days elapsed from the beginning of the applicable fiscal year in which the Effective Time occurs to the date of the Effective Time (but paid at the time noted below); and (ii) with respect to the Parent Employees (other than the estate of Parent’s immediate past Chairman and Parent’s current Chairman, President and Chief Executive Officer, as provided below) and the Company Employees, for the period that begins on the date immediately following the date of the Effective Time (or, for Parent Employees, July 1, 2013, if the Effective Time occurs after June 30, 2013) and ends on December 31, 2013, a discretionary bonus amount that shall be determined by the Compensation Committee of Parent’s Board after the Effective Time. The aggregate annual bonus amount, if any described in clauses (i) and (ii) shall be paid between January 1, 2014 and March 15, 2014, subject to any forfeiture restrictions that would apply to such a bonus payment in the event that the applicable Parent Employee or Company Employee is no longer providing services to the Parent or any of its Affiliates (including the Surviving Corporation and its Subsidiaries) on December 31, 2013. Notwithstanding the immediately preceding sentence, with respect to the annual bonus payments to be made to both (A) the estate of Parent’s immediate past Chairman who served prior to April 19, 2013 for Parent’s fiscal year ending June 30, 2013 and (B) Parent’s current Chairman, President and Chief Executive Officer for Parent’s fiscal year ending June 30, 2013 and, in the event that the Effective Time has not occurred prior to July 1, 2013, Parent’s short fiscal year that will begin July 1, 2013, the amount of such bonuses shall be determined in accordance with the criteria previously approved by the Parent Board, which bonuses shall not exceed the individual amounts set forth in Section 5.2(n) of the Parent Disclosure Letter. For other Parent Employees, Parent may pay discretionary annual bonuses and retention bonuses for the fiscal year ending June 30, 2013 as the Parent Board deems appropriate and as in the ordinary course of business consistent with past practice; provided, however, that such bonuses may not exceed $600,000 in the aggregate.

(f) As of, or as soon as administratively practicable following, the Effective Time, Parent shall establish (i) an annual bonus program, which shall be the same as, or based substantially on the terms of, the Company Cash Incentive Bonus Plan, for the calendar year beginning January 1, 2014 (which will be the first fiscal year that immediately follows the fiscal year in which the Effective Time occurs pursuant to Section 6.14(a)), and (ii) a revised long term incentive plan, which is the same as, or based substantially on the terms of, the Company Long-Term Incentive Plan (which is a sub-plan governed by the Company’s 2005 Stock Incentive Plan), with shares to be issued under Parent’s 2009 Equity Compensation Plan.

(g) Without limiting the generality of Section 9.5, this Section 6.6 shall be binding upon and inure solely to the benefit of each Party, and nothing in this Section 6.6, express or implied, is intended to confer upon any other Person, including, any current or former director, officer or employee of the Company, Parent or their respective Subsidiaries, any rights or remedies of any nature whatsoever under or by reason of this Section 6.6. Nothing in this Section 6.6, express or implied, shall be (i) deemed an amendment of any Company Benefit Plan or Parent Benefit Plan, or (ii) construed to prevent any Party or its Affiliates from terminating or modifying to any extent or in any respect any employee benefit plan that a Party or its Affiliates may establish or maintain.

(a) In the event of any threatened or actual Action, whether civil, criminal or administrative, in which any individual who is now, or has been at any time prior to the date of this Agreement, or who becomes prior to the Effective Time, a director or officer of the Company or any of its Subsidiaries or who is or was serving at the request of the Company or any of its Subsidiaries as a director or officer of another Person (the “Indemnified Parties”), is, or is threatened to be, made a party based in whole or in part on, or arising in whole or in part out of, or pertaining to (i) the fact that he is or was a director or officer of the Company or any of its Subsidiaries, (ii) all acts or omissions by him taken at the request of the Company or any of its Subsidiaries at any time prior to the Effective Time, or (iii) this Agreement or any of the transactions contemplated by this Agreement, whether asserted or arising before or after the Effective Time, the Parties shall cooperate and use their best efforts to defend against and respond thereto. From and after the Effective Time, Parent shall indemnify and hold harmless, as and to the fullest extent permitted under applicable Law, the Company’s certificate of incorporation and bylaws and any agreement set forth in Section 6.7(a) of the Company Disclosure Letter, each such Indemnified Party against any losses, claims, damages, liabilities, costs, expenses (including reimbursement for reasonable fees and expenses incurred in advance of the final disposition of any such Action upon receipt of any undertaking required by applicable Law), judgments, fines and amounts paid in settlement in connection with any such threatened or actual Action.

(b) Unless required by applicable law, no provision in any certificate or articles of incorporation, bylaws, or comparable organizational documents of the Company or any of its Subsidiaries providing indemnification, advancement or exculpation shall for a period of six years following the Effective Time be amended, modified or repealed in any manner that would adversely affect the rights or protections thereunder of any individuals who at the Effective Time were current or former directors, officers or employees of the Company or any of its Subsidiaries.

(c) For a period of six years from the Effective Time, Parent shall maintain in effect, for the benefit of the Indemnified Parties with respect to acts or omissions occurring prior to the Effective Time that were committed by such directors and officers in their capacity as such, the existing directors’ and officers’ liability insurance policy maintained by the Company as of the date of this Agreement (provided, however, that Parent may substitute therefor policies of at least the same coverage and amounts containing terms and conditions that are not less advantageous than such policy). The Company may, in lieu of the foregoing insurance coverage, purchase, prior to the Effective Time, a six-year prepaid “tail policy” on terms and conditions (in both amount and scope) providing substantially equivalent benefits as the current policies of directors’, officers’ and employees’ liability insurance maintained by the Company with respect to acts or omissions occurring prior to the Effective Time that were committed by such directors, officers and employees in their capacity as such. Notwithstanding the foregoing, in no event shall Parent be required to, and the Company shall not, expend more than 250% per year of coverage of the amount currently expended by the Company per year of coverage as of the date of this Agreement (the “Maximum Amount”) to maintain or procure insurance coverage pursuant hereto. If Parent is unable to maintain or obtain the insurance called for by this Section 6.7(c), Parent shall obtain as much comparable insurance as available for the Maximum Amount. The Indemnified Parties may be required to make reasonable application and provide reasonable and customary representations and warranties to Parent’s insurance carrier for the purpose of obtaining such insurance, comparable in nature and scope to the applications, representations and warranties required of Persons who are directors and officers of Parent as of the date of this Agreement.

(d) The provisions of this Section 6.7 shall survive the Effective Time and are intended to be for the benefit of, and shall be enforceable by, each Indemnified Party and his or her heirs and Representatives and are in addition to, and not in substitution for, any other rights to indemnification or contribution that any such Person may have by contract or otherwise.

(e) If Parent or the Surviving Corporation or any of its successors or assigns shall (i) consolidate with or merge into any other Person and shall not be the continuing or surviving corporation or entity of such consolidation or merger or (ii) transfer all or substantially all of its properties and assets to any Person, then, and in each such case, proper provisions shall be made so that the successors and assigns of Parent or the Surviving Corporation (or acquiror of such assets), as the case may be, shall assume all of the obligations of Parent or the Surviving Corporation set forth in this Section 6.7.

Section 6.8 Additional Agreements. In case at any time after the Effective Time any further action is necessary or desirable to carry out the purposes of this Agreement (including any merger between a Subsidiary of Parent, on the one hand, and a Subsidiary of the Company, on the other) or to vest the Surviving Corporation with full title to all properties, assets, rights, approvals, immunities and franchises of either Party, the proper officers and directors of each Party and their respective Subsidiaries shall take all such necessary action as may be reasonably requested by, and at the sole expense of, Parent.

Section 6.9 Advice of Changes. Each Party shall promptly advise the Other Party of any change or event (a) having or reasonably likely to have a Material Adverse Effect on it or (b) that it believes would or would be reasonably likely to cause or constitute a breach of any of its representations, warranties or covenants contained in this Agreement, which breach would result in, if occurring or continuing on the Closing Date, the failure of the conditions set forth in Section 7.1 or Section 7.2, with respect to the Company, or Section 7.1 or Section 7.3, with respect to Parent; provided, however, that no such notification shall affect the representations, warranties, covenants or other agreements of the Parties (or remedies with respect thereto) or the conditions to the obligations of the Parties under this Agreement; provided, further, that a failure to comply with this Section 6.9 shall not constitute the failure of any condition set forth in Article VII to be satisfied unless the underlying Material Adverse Effect or material breach would independently result in the failure of a condition set forth in Article VII to be satisfied.

Section 6.10 Exemption from Liability Under Section 16(b). Prior to the Effective Time, the Company and Parent shall take such actions as may be necessary to cause dispositions of equity securities of the Company (including Derivative securities) or acquisitions of Parent Common Stock resulting from the transactions contemplated by this Agreement by any individual who is subject to Section 16 of the Exchange Act with respect to the Company, or will become subject to such requirements with respect to Parent, to be exempt under Rule 16b-3 promulgated under the Exchange Act in accordance with the procedures set forth in such Rule 16b-3 and the Skadden, Arps, Slate, Meagher & Flom LLP SEC No-Action Letter (January 12, 1999).

(a) None of the Company or Parent (each, a “No-Shop Party”) or their respective Subsidiaries or any Representative of such No-Shop Party or any of its Subsidiaries shall directly or indirectly (i) solicit, initiate, knowingly encourage or knowingly facilitate, directly or indirectly (including by way of furnishing non-public information), or take any other action designed to facilitate, any inquiry or proposal regarding an Alternative Transaction involving such No-Shop Party or any of its Subsidiaries (an “Acquisition Proposal”); (ii) participate in any discussions or negotiations regarding an Alternative Transaction; or (iii) enter into any agreement regarding any Alternative Transaction. Notwithstanding the foregoing, a No-Shop Party shall be permitted, prior to the obtaining of the Stockholder Approval of such No-Shop Party, and subject to first entering into a confidentiality agreement with the Person proposing such Acquisition Proposal on terms substantially similar to, and no less favorable to such No-Shop Party than, those contained in the Confidentiality Agreement, to (i) furnish information (including non-public information) concerning such No-Shop Party and its Subsidiaries to the Person making such Acquisition Proposal and its Representatives and afford such Person and its Representatives access to the business, properties, assets, Contracts, officers, employees, books and records of such No-Shop Party and its Subsidiaries; provided, however, that such No-Shop Party shall substantially concurrently with the delivery to such Person provide to the Other Party any non-public information or access that is provided or made available to such Person or its Representatives unless such information or access has been previously been provided or made available to the Other Party; and (ii) consider and participate in discussions and negotiations with respect to such Acquisition Proposal received by such No-Shop Party, in each case, if and only to the extent that (A) such Acquisition Proposal is an

unsolicited, bona fide written Acquisition Proposal made after the date of this Agreement; (B) such Acquisition Proposal did not result from a breach of this Section 6.11(a), and (C) the Board of such No-Shop Party reasonably determines in good faith (after consultation with outside legal counsel) that such Acquisition Proposal is, or is reasonably likely to lead to, a Superior Proposal.

(b) Other than in accordance with Section 6.11(c) or Section 6.11(e) below, the Board of a No-Shop Party shall not (i) fail to make the Company Recommendation or the Parent Recommendation, as the case may be; (ii) withdraw or modify or qualify in a manner adverse to the Other Party, or publicly propose to withdraw or modify or qualify in a manner adverse to Other Party, the Company Recommendation or the Parent Recommendation, as the case may be; (iii) approve, adopt or recommend, or publicly propose to approve, adopt or recommend, any Acquisition Proposal; (iv) fail to reaffirm the Company Recommendation or the Parent Recommendation, as the case may be, within three Business Days upon the request of the Other Party (provided, however, that the Other Party may make such request only following the public announcement of an Acquisition Proposal and then only once for each Acquisition Proposal; provided, further, that the Other Party may make another request every time any material revisions are made to such Acquisition Proposal (it being agreed that any change in the purchase price in such Acquisition Proposal shall be deemed a material revision)); or (v) fail to include the Company Recommendation or Parent Recommendation (as the case may be) in the Joint Proxy Statement (any action described in clauses (i) through (v) a “Change in Company Recommendation” or a “Change in Parent Recommendation,” as applicable).

(c) Notwithstanding anything to the contrary in this Section 6.11, at any time prior to obtaining the Company Stockholder Approval or Parent Stockholder Approval, as applicable, if a No-Shop Party has received a bona fide written Acquisition Proposal that was not obtained in violation of Section 6.11(a), that has not been withdrawn or abandoned and that the Board of such No-Shop Party has concluded in good faith (after consultation with its financial advisors and outside legal counsel) constitutes a Superior Proposal after giving effect to all of the adjustments which may be offered by the Other Party pursuant to clause (ii) below (if applicable), the Board of such No-Shop Party may (1) effect a Change in Company Recommendation or a Change in Parent Recommendation, as applicable; and/or (2) terminate the Agreement to enter into a definitive agreement regarding a Superior Proposal if the following conditions are met:

(i) in the case of any action described in either clause (1) or clause (2) above, the Board of such No-Shop Party shall have determined in good faith that such action is necessary in order to comply with the fiduciary duties of its directors under applicable Law;

(ii) in the case of any action described in either clause (1) or clause (2) above, (A) such No-Shop Party shall have provided prior written notice to the Other Party in accordance with Section 9.2 (the “Superior Proposal Notice”) of its intention to effect a Change in Company Recommendation or a Change in Parent Recommendation, as applicable, and/or terminate the Agreement, which Superior Proposal Notice shall specify the material terms and conditions of any such Superior Proposal (including the identity of the Person making such Superior Proposal), and contemporaneously with providing such Superior Proposal Notice shall have provided a copy of the relevant proposed transaction agreements with the Person making

such Superior Proposal and other material documents; (B) during the period that commences on the date of delivery of the Superior Proposal Notice as determined in accordance with Section 9.2 and ends at 11:59 p.m. Central time on the date that is the fifth Business Day following the date of such delivery (the “Superior Proposal Notice Period”), such No-Shop Party shall, and shall cause its Representatives to, negotiate with the Other Party and its Representatives in good faith (to the extent the Other Party desires to negotiate) to make such adjustments to the terms and conditions of this Agreement so that such Acquisition Proposal ceases to constitute a Superior Proposal; and (C) the Board of such No-Shop Party shall have considered all revisions to the terms of this Agreement irrevocably offered in writing by the Other Party and, at the end of the Superior Proposal Notice Period, shall have determined in good faith that such Acquisition Proposal continues to constitute a Superior Proposal even if such revisions were to be given effect. In the event that during the Superior Proposal Notice Period any revisions are made to such Acquisition Proposal and the Board of such No-Shop Party in its good faith judgment determines such revisions are material (it being agreed that any change in the purchase price in such Acquisition Proposal shall be deemed a material revision), the No-Shop Party shall be required to deliver a new Superior Proposal Notice and to comply with the requirements of this Section 6.11(c) with respect to such new Superior Proposal Notice (except that the Superior Proposal Notice Period shall end at 11:59 p.m. Central time on the date that is the second Business Day following the date of the delivery of such Superior Proposal Notice); and

(iii) in the case of any action described in clause (2) above, such No-Shop Party shall have (A) complied in all material respects with its obligations under this Section 6.11; and (B) paid the applicable Termination Fee to the Other Party in accordance with Section 8.3(d).

(d) Each No-Shop Party shall notify the Other Party promptly (but in no event later than 24 hours) after receipt of any Acquisition Proposal, or any material modification of or material amendment to any Acquisition Proposal, or any request for non-public information relating to such No-Shop Party or any of its Subsidiaries or for access to the business, properties, assets, Contracts, officers, employees, books and records of such No-Shop Party and its Subsidiaries by any Person that informs such No-Shop Party or any of its Subsidiaries that it is considering making, or has made, an Acquisition Proposal. Such notice to the Other Party shall be made orally and in writing and shall indicate the identity of the Person making the Acquisition Proposal or intending to make or considering making an Acquisition Proposal or requesting non-public information or access to the business, properties, assets, Contracts, officers, employees, books and records of such No-Shop Party or any of its Subsidiaries, and the material terms of any such Acquisition Proposal or modification or amendment to an Acquisition Proposal. Each No-Shop Party shall keep the Other Party informed as fully as reasonably practical on a prompt basis, and in any event within 24 hours, of any material changes in the status and any material changes or modifications in the terms of any such Acquisition Proposal, indication or request. Each No-Shop Party shall also promptly, and in any event within 24 hours, notify the Other Party, orally and in writing, if it enters into discussions or negotiations concerning any Acquisition Proposal in accordance with this Section 6.11.

(e) Notwithstanding anything to the contrary in this Section 6.11, at any time prior to obtaining the Company Stockholder Approval or Parent Stockholder Approval, as

applicable, in circumstances not involving or relating to an Acquisition Proposal, if the Board of such No-Shop Party has concluded in good faith (after consultation with its financial advisors and outside legal counsel) that that such action is necessary in order to comply with the fiduciary duties of its directors under applicable Law, after giving effect to all of the adjustments which may be offered by the Other Party pursuant to clause (ii) below (if applicable), the Board of such No-Shop Party may effect a Change in Company Recommendation or a Change in Parent Recommendation, as applicable, if the following conditions are met:

(i) such No-Shop Party shall have provided prior written notice to the Other Party in accordance with Section 9.2 (the “Fiduciary Notice”) of its intention to effect a Change in Company Recommendation or a Change in Parent Recommendation, as applicable, and such Fiduciary Notice shall have specified the reasons for the Change in Company Recommendation or a Change in Parent Recommendation, as applicable;

(ii) during the period that commences on the date of delivery of the Fiduciary Notice as determined in accordance with Section 9.2 and ends at 11:59 p.m. Central time on the date that is the fifth Business Day following the date of such delivery (the “Fiduciary Notice Period”), such No-Shop Party shall, and shall cause its Representatives to, negotiate with the Other Party and its Representatives in good faith (to the extent the Other Party desires to negotiate) to make such adjustments to the terms and conditions of this Agreement as would permit the Board of such No-Shop Party not to make a Change in Company Recommendation or Change in Parent Recommendation, as applicable; and

(iii) the Board of such No-Shop Party shall have considered all revisions to the terms of this Agreement irrevocably offered in writing by the Other Party and, at the end of the Fiduciary Notice Period, shall have determined in good faith that a Change in Company Recommendation or a Change in Parent Recommendation, as applicable, would nevertheless continue to be necessary in order to comply with the fiduciary duties of its directors under applicable Law even if such revisions were to be given effect.

(f) Nothing contained in this Section 6.11 or elsewhere in this Agreement shall prohibit a No-Shop Party from taking and disclosing to the stockholders of such No-Shop Party a position required by Rule 14e-2(a) or Rule 14d-9 promulgated under the Exchange Act or from making any “stop, look and listen” communication or any other similar disclosure to the stockholders of such No-Shop Party pursuant to Rule 14d-9(f) under the Exchange Act; provided, however, that such disclosure that addresses or relates to the approval, recommendation or declaration of the advisability by the Board of such No-Shop Party with respect to this Agreement or an Acquisition Proposal shall be deemed a Change in Company Recommendation or a Change in Parent Recommendation, as applicable, unless the Company Board or the Parent Board, as applicable, in connection with such communication publicly states that its recommendation with respect to this Agreement has not changed or refers to the prior recommendation of the Company Board or the Parent Board, as applicable.

(g) Each No-Shop Party and its Subsidiaries shall immediately cease and cause to be terminated any existing discussions or negotiations with any Persons (other than the Other Party) conducted heretofore with respect to any of the foregoing, and shall use reasonable best efforts to cause all Persons (other than the Other Party) who have been furnished

confidential information regarding such No-Shop Party in connection with the solicitation of or discussions regarding an Acquisition Proposal within the 12 months prior to the date of this Agreement promptly to return or destroy such information. Except to the extent the Board of a No-Shop Party has concluded in good faith (after consultation with its financial advisors and outside legal counsel) that that such action is necessary in order to comply with the fiduciary duties of its directors under applicable Law, each No-Shop Party agrees not to, and to cause its Subsidiaries not to, release any Third Party from the confidentiality and standstill provisions of any agreement to which such No-Shop Party or its Subsidiaries is or may become a party, and shall immediately take all steps necessary to terminate any approval that may have been heretofore given under any such provisions authorizing any Person to make an Acquisition Proposal.

(h) Each No-Shop Party shall ensure that all Representatives of such No-Shop Party and its Subsidiaries are aware of the restrictions described in this Section 6.11 as reasonably necessary to avoid violations thereof. Notwithstanding anything to the contrary in this Section 6.11, any violation of the restrictions set forth in this Section 6.11 by any Representative of a No-Shop Party or any of its Subsidiaries at the direction or with the consent of such No-Shop Party or any of its Subsidiaries shall be deemed to be a breach of this Section 6.11.

Section 6.12 Takeover Statutes. Each of Parent, Merger Sub and the Company shall use its reasonable best efforts (a) to take all actions necessary so that no “moratorium,” “control share,” “fair price,” “anti-greenmail,” “takeover,” “interested stockholder” or similar Laws are or become applicable to the Merger or any of the other transactions contemplated by this Agreement and (b) if any such Law is or becomes applicable to the Merger or any of the other transactions contemplated by this Agreement, to take all actions necessary so that the Merger and the other transactions contemplated hereby may be consummated as promptly as reasonably practicable on the terms contemplated by this Agreement and otherwise to minimize the effect of such Laws on the Merger and the other transactions contemplated hereby.

Section 6.13 Reorganization Tax Matters. None of the Company, Merger Sub or Parent shall take or knowingly fail to take any action that is otherwise consistent with the terms of this Agreement (without regard to this Section 6.13) and compliant with applicable Law that would cause the Merger to fail to qualify as a reorganization within the meaning Section 368 of the Code. Subject to applicable Tax Law and the receipt of the tax opinion letters referenced in Section 7.2(c) and Section 7.3(c), each of the Company, Merger Sub and Parent shall report the Merger as a reorganization within the meaning of Section 368 of the Code.

(a) Parent Fiscal Year. At or prior to the Effective Time, subject to the occurrence of the Closing and upon the terms and conditions of this Agreement, Parent shall change its fiscal year to year-end December 31st.

(b) New Parent Bylaws. At or prior to the Effective Time, subject to the occurrence of the Closing, the bylaws of Parent shall be amended and restated in the form attached hereto as Exhibit C (the “New Parent Bylaws”).

(i) At or prior to the Effective Time, the Parent Board shall appoint (A) Joseph J. Romano as Chairman of Parent (the “Chairman”); (B) Allan D. Keel as President and Chief Executive Officer of Parent; and (C) E. Joseph Grady as Senior Vice President and Chief Financial Officer of Parent (the persons in clauses (B) and (C) collectively, the “Named Executive Officers”). If the Chairman or any of the Named Executive Officers is unable or unwilling to hold the offices as set forth above, Parent and the Company shall confer and mutually designate his successor. The authority, duties and responsibilities of the Named Executive Officers shall be set forth in the Executive Officer Employment Agreements, which Contracts shall also set forth in their entirety the rights and remedies of the Named Executive Officers with respect to employment or engagement by Parent.

(ii) On the date of this Agreement, Parent and the Named Executive Officers have entered into employment agreements (the “Executive Officer Employment Agreements”). The effectiveness of the Executive Officer Employment Agreements is subject to the occurrence of the Closing.

(d) Parent Board Representation. At or prior to the Effective Time, Parent shall take all requisite action to (i) cause the size of the Parent Board to be eight directors and (ii) cause the directors of the Parent Board to be comprised of (A) five directors selected by the Parent Board, which directors shall be members of the existing Parent Board; and (B) three directors selected by the Company Board, which directors shall be members of the existing Company Board. In the event that, prior to the Effective Time, any person so selected to serve on the Parent Board after the Effective Time is unable or unwilling to serve in such position, the Board which selected such person shall designate another of its members (or a non-member of such Board if reasonably acceptable to the Parent Board) to serve in such person’s stead in accordance with the provisions of the immediately preceding sentence. For a period of no less than one year from and after the Effective Time, the Parent Board shall consist of five Parent Directors and three Company Directors; provided, however, that, during such period, at least three of the Parent Directors and at least two of the Company Directors shall be independent for purposes of the rules of the NYSE. If, at any time during such one year period, the number of Company Directors and Parent Directors serving, or that would be serving following the next stockholders’ meeting at which directors are to be elected, as directors of Parent, would not be as set forth above, then, subject to the fiduciary duties of the directors of Parent, the Parent Board (and any nominating committee thereof) shall appoint, and nominate for election at the next stockholders’ meeting at which directors are to be elected, such person or persons as may be requested by the remaining Company Directors (if the number of Company Directors is, or would otherwise become, less than three) or by the remaining Parent Directors (if the number of Parent Directors is, or would otherwise become, less than five) to ensure that there will be five Parent Directors and three Company Directors.

(e) Investment Committee. At or prior to the Effective Time, the Parent Board shall create an investment committee of the Parent Board (the “Investment Committee”) which, among other things, shall be designated the authority and power to allocate, subject to the approval of the entire Parent Board, the amount and nature of all capital expenditures of Parent and its Subsidiaries. The Investment Committee shall have two members, which shall, effective as of the Effective Time, be initially comprised of Joseph J. Romano and Allan D. Keel. Joseph J. Romano will serve as Chairman of the Investment Committee.

(f) Parent Name; Location. Following the Effective Time, Parent shall (i) retain its name and (ii) make the Surviving Corporation’s headquarters and principal corporate offices in Houston, Texas the headquarters and principal corporate offices of Parent.

Section 6.15 Transaction Litigation. Subject to applicable Law, each of Parent and the Company shall give the Other Party the opportunity to participate in the defense or settlement of any stockholder litigation against such Party and its directors or executive officers relating to the Merger and the other transactions contemplated by this Agreement. Each Party agrees that, except to the extent permitted pursuant to Section 5.2(o), such Party shall not settle or offer to settle any litigation commenced prior to or after the date of this Agreement against such Party or its directors, executive officers or similar persons by any stockholder of such Party relating to the Merger or the other transactions contemplated by this Agreement without the prior written consent of the Other Party (such consent not to be unreasonably withheld, delayed or conditioned).

Section 7.1 Conditions to Each Party’s Obligation to Effect the Merger. The respective obligations of the Company, Parent and Merger Sub to effect the Merger are subject to the satisfaction or waiver (to the extent permitted by Law) on or prior to the Closing Date of the following conditions:

(a) Stockholder Approval. The Company Stockholder Approval and the Parent Stockholder Approval shall have been obtained in accordance with applicable Law.

(b) No Injunctions or Restraints; Illegality. No Laws shall have been adopted or promulgated by a Governmental Entity of competent jurisdiction and no temporary restraining order, preliminary or permanent injunction or other Order issued by a court or other Governmental Entity of competent jurisdiction in the United States shall be in effect, having the effect of making the Merger illegal or otherwise prohibiting consummation of the Merger.

(c) Regulatory Matters. Each of the approvals set forth in Section 3.4 and Section 4.4 required to be obtained for the consummation, as of the Effective Time, of the Merger and the other transactions contemplated by this Agreement (such approvals, the “Requisite Approvals”), other than any approvals the failure to obtain of which would not, individually or in the aggregate, have a Material Adverse Effect on the Company or Parent, shall have been obtained.

(d) NYSE Listing. The shares of Parent Common Stock to be issued in the Merger and such other shares to be reserved for issuance in connection with the Merger shall have been approved for listing on the NYSE, subject to official notice of issuance.

(e) Effectiveness of the Form S-4. The Form S-4 shall have been declared effective by the SEC under the Securities Act. No stop order suspending the effectiveness of the Form S-4 shall be in effect and no proceedings for that purpose shall be pending before the SEC.

Section 7.2 Additional Conditions to Obligations of Parent and Merger Sub. The obligations of Parent and Merger Sub to effect the Merger are subject to the satisfaction of, or waiver by Parent, on or prior to the Closing Date of the following conditions:

(a) Representations and Warranties. (i) The representations and warranties of the Company contained in Section 3.2(a) and the third sentence of Section 3.2(b) shall be true and correct as of the date of this Agreement and as of the Closing Date, as if made as of such date (except for those representations and warranties which address matters only as of an earlier date which shall have been true and correct as of such earlier date), except, in each case, for inaccuracies that would result in payment of $1,000,000 or less of additional Merger Consideration, in the aggregate; (ii) each representation and warranty of the Company qualified by a Company Material Adverse Effect shall be true and correct in all respects as of the date of this Agreement and as of the Closing Date, as if made as of such date (except for those representations and warranties which address matters only as of an earlier date which shall have been true and correct as of such earlier date); and (iii) each of the other representations and warranties of the Company contained in this Agreement shall be true and correct as of the date of this Agreement and as of the Closing Date, as if made as of such date (except for those representations and warranties which address matters only as of an earlier date which shall have been true and correct as of such earlier date), except in the case of this clause (iii), where the failure of such representations and warranties to be true and correct, individually or in the aggregate, has not had, or would not reasonably be expected to have, a Company Material Adverse Effect. Parent shall have received a certificate of the chief executive officer or the chief financial officer of the Company to such effect.

(b) Performance of Obligations of the Company. The Company shall have performed or complied with, in all material respects, all material agreements and covenants required to be performed or complied with by it under this Agreement at or prior to the Closing Date and Parent shall have received a certificate of the chief executive officer or the chief financial officer of the Company to such effect.

(c) Tax Opinion. Parent shall have received an opinion from Morgan, Lewis & Bockius LLP, on the basis of representations and warranties set forth or referred to in such opinion, dated as of the Closing Date, to the effect that the Merger will be treated as a “reorganization” within the meaning of Section 368(a) of the Code. In rendering such opinion, such counsel shall be entitled to receive and rely upon representations, warranties and covenants of officers of Parent, Merger Sub or the Company. In the event that Morgan, Lewis & Bockius LLP is unwilling to provide such opinion, Parent shall accept such opinion from Vinson & Elkins LLP, if such firm will provide the same to Parent.

(d) Absence of Company Material Adverse Effect. Since the date of this Agreement, there shall not have occurred any event or development that, individually or in the aggregate, has had or would reasonably be expected to have a Company Material Adverse Effect.

Section 7.3 Additional Conditions to Obligations of the Company. The obligations of the Company to effect the Merger are subject to the satisfaction of, or waiver by the Company, on or prior to the Closing Date of the following conditions:

(a) Representations and Warranties. (i) The representations and warranties of Parent and Merger Sub contained in Section 4.2(a) and the third sentence of Section 4.2(b) shall be true and correct other than in de minimis respects as of the date of this Agreement and as of the Closing Date, as if made as of such date (except for those representations and warranties which address matters only as of an earlier date which shall have been true and correct as of such earlier date), (ii) each representation and warranty of Parent and Merger Sub qualified by a Parent Material Adverse Effect shall be true and correct in all respects as of the date of this Agreement and as of the Closing Date, as if made as of such date (except for those representations and warranties which address matters only as of an earlier date which shall have been true and correct as of such earlier date) and (iii) each of the other representations and warranties of Parent and Merger Sub contained in this Agreement shall be true and correct as of the date of this Agreement and as of the Closing Date, as if made as of such date (except for those representations and warranties which address matters only as of an earlier date which shall have been true and correct as of such earlier date), except in the case of this clause (iii), where the failure of such representations and warranties to be true and correct, individually or in the aggregate, has not had, or would not reasonably be expected to have, a Parent Material Adverse Effect. The Company shall have received a certificate of the chief executive officer or the chief financial officer of Parent to such effect.

(b) Performance of Obligations of Parent and Merger Sub. Parent and Merger Sub shall have performed or complied with, in all material respects, all material agreements and covenants required to be performed or complied with by them under this Agreement at or prior to the Closing Date and the Company shall have received a certificate of the chief executive officer or the chief financial officer of Parent to such effect.

(c) Tax Opinion. Company shall have received an opinion from Vinson & Elkins LLP, on the basis of representations and warranties set forth or referred to in such opinion, dated as of the Closing Date, to the effect that the Merger will be treated as a “reorganization” within the meaning of Section 368(a) of the Code. In rendering such opinion, such counsel shall be entitled to receive and rely upon representations, warranties and covenants of officers of Parent, Merger Sub or the Company. In the event that Vinson & Elkins LLP is unwilling to provide such opinion, the Company shall accept such opinion from Morgan, Lewis & Bockius LLP, if such firm will provide the same to Company.

(d) Absence of Parent Material Adverse Effect. Since the date of this Agreement, there shall not have occurred any event or development that, individually or in the aggregate, has had or would reasonably be expected to have a Parent Material Adverse Effect.

Section 8.1 Termination. This Agreement may be terminated at any time prior to the Effective Time, whether before or after approval of the matters presented in connection with the Merger by the stockholders of the Company or Parent:

(a) by mutual consent of the Company and Parent in a written instrument, if the Board of each so determines by a vote of a majority of the members of its respective entire Board;

(b) by either the Company Board or the Parent Board if any Governmental Entity that must grant a Requisite Approval has denied approval of the Merger and such denial has become final and nonappealable or any Governmental Entity of competent jurisdiction shall have issued a final and nonappealable Order permanently enjoining or otherwise prohibiting the consummation of the transactions contemplated by this Agreement, provided, however, that a Party shall not have the foregoing right to terminate unless such Party has complied with its obligations pursuant to Section 6.4 with respect to such denial or Order;

(c) by either the Company Board or the Parent Board if the Merger has not been consummated on or before October 31, 2013 (the “End Date”), unless the failure of the Closing to occur by the End Date is due to the failure of the Party seeking to terminate this Agreement to perform or observe the covenants and agreements of such Party set forth in this Agreement;

(d) by either the Parent Board or the Company Board if there has been a breach of any of the covenants or agreements or any of the representations or warranties set forth in this Agreement on the part of the Company, in the case of a termination by Parent, or Parent or Merger Sub, in the case of a termination by the Company, which breach, either individually or in the aggregate, would result in, if occurring or continuing on the Closing Date, the failure of the conditions set forth in Section 7.1 or Section 7.2, with respect to the Company, or Section 7.1 or Section 7.3, with respect to Parent, and which breach is not cured within 30 days following written notice to the Party committing such breach or by its nature or timing cannot be cured within such time period or prior to the End Date; provided, however, that a Party shall not have the foregoing right to terminate unless if, at the time of such termination, there exists a breach or breaches of any representation, warranty, covenant or agreement of such terminating Party contained in this Agreement that, individually or in the aggregate, would result in the closing conditions set forth in Section 7.1 or Section 7.2, with respect to the Company, or Section 7.1 or Section 7.3, with respect to Parent, not to be satisfied;

(e) by the Parent Board if the Company has either (i) effected a Change in Company Recommendation; provided, however, that the termination right pursuant to this clause (i) must be exercised by Parent prior to the receipt of the Company Stockholder Approval; or (ii) committed a Willful and Material Breach of Section 6.3 or Section 6.11;

(f) by the Company Board if Parent has either (i) effected a Change in Parent Recommendation; provided, however, that the termination right pursuant to this clause (i) must be exercised by the Company prior to the receipt of the Parent Stockholder Approval; or (ii) committed a Willful and Material Breach of Section 6.3 or Section 6.11;

(g) by either Parent or the Company, if the Company Stockholder Approval or the Parent Stockholder Approval has not been obtained at the Company Stockholder Meeting (or any adjournment or postponement thereof) or the Parent Stockholder Meeting (or any adjournment or postponement thereof), respectively; or

(h) by Parent prior to obtaining the Parent Stockholder Approval or by the Company prior to obtaining the Company Stockholder Approval, in each case in accordance with, and subject to the terms and conditions of, Section 6.11(c).

Any Party desiring to terminate this Agreement pursuant to this Section 8.1 (other than any termination pursuant to Section 8.1(a)) shall give written notice of such termination to the Other Parties specifying the provision or provisions of this Section 8.1 pursuant to which such termination is purportedly effected.

Section 8.2 Effect of Termination. In the event of termination of this Agreement by either the Company or Parent as provided in Section 8.1, this Agreement shall forthwith become void and have no effect (except for the provisions of Section 6.2(b), Section 8.2, Section 8.3 and Article IX (other than Section 9.13) as well as the Confidentiality Agreement, which shall survive any termination of this Agreement), and none of the Company, Parent or any of their respective Affiliates or Representatives shall have any liability of any nature whatsoever under this Agreement, or in connection with the transactions contemplated by this Agreement, except (a) as provided in Section 8.3; (b) for Willful and Material Breach of this Agreement, for which the aggrieved Party shall be entitled to all rights and remedies available at law or equity; provided, however, that if a Party commits a Willful and Material Breach of Section 6.3 or Section 6.11 and such Party pays the applicable Termination Fee in accordance with Section 8.3(b) or Section 8.3(d), none of such Party, its Affiliates or its or their Representatives shall have any further liability of any kind for any reason in connection with this Agreement or the termination contemplated by Section 8.1(e)(ii) or Section 8.1(f)(ii), as applicable; (c) for fraud, for which the aggrieved Party shall be entitled to all rights and remedies available at law or equity; or (d) for breaches of the Confidentiality Agreement, for which the aggrieved Party shall be entitled to all rights and remedies provided for in the Confidentiality Agreement.

(a) In the event that (i) a bona fide Acquisition Proposal has been publicly communicated to or otherwise publicly made known to stockholders of the Company or Parent, as applicable, or any Person has publicly announced an intention (whether or not conditional) to make an Acquisition Proposal involving the Company or Parent, as applicable, in each case after the date of this Agreement and which in each case has not been withdrawn prior to the applicable Stockholder Meeting (the Party to which this clause (i) applies is referred to in this Section 8.3(a) as the “Applicable Party”); (ii) thereafter this Agreement is terminated pursuant to (A) Section 8.1(c) and at the time of such termination the Applicable Party has not obtained such

Applicable Party’s Stockholder Approval; (B) Section 8.1(g) following the failure of the Applicable Party to obtain such Applicable Party’s Stockholder Approval; or (C) Section 8.1(d) as a result of a breach by the Applicable Party; and (iii) prior to the date that is 12 months after the date of such termination, the Applicable Party consummates an Alternative Transaction or enters into any definitive agreement related to an Alternative Transaction, then the Applicable Party shall on the date an Alternative Transaction is consummated or any such definitive agreement is entered into, pay the Other Party the applicable Termination Fee, less any Expense Reimbursement Amount previously paid by such Applicable Party. “Termination Fee” means a fee equal to $7,000,000 if payable by the Company and a fee equal to $28,000,000 if payable by Parent.

(b) In the event this Agreement is terminated by Parent pursuant to Section 8.1(e), then the Company shall pay Parent, within three Business Days of the date of such termination, the applicable Termination Fee. In the event this Agreement is terminated by the Company pursuant to Section 8.1(f), then Parent shall pay the Company, within three Business Days of the date of such termination, the applicable Termination Fee.

(c) In the event this Agreement is terminated by Parent or the Company pursuant to Section 8.1(d) as a result of a Willful and Material Breach by the Other Party, then the breaching Party shall pay the Other Party the Termination Fee within three Business Days of the date of such termination.

(d) In the event this Agreement is terminated by Parent pursuant to Section 8.1(h), then Parent shall pay the Company the applicable Termination Fee at or prior to the time of such termination. In the event this Agreement is terminated by the Company pursuant to Section 8.1(h), then the Company shall pay Parent the applicable Termination Fee at or prior to the time of such termination.

(e) In the event this Agreement is terminated by Parent or the Company pursuant to (i) Section 8.1(g) due to the failure to obtain the Parent Stockholder Approval or (ii) Section 8.1(c) and the Parent Stockholder Approval shall not have been obtained prior to such termination, then Parent shall pay, within three Business Days of the date of such termination, an amount equal to $4,500,000 (the “Expense Reimbursement Amount”).

(f) In the event this Agreement is terminated by Parent or the Company pursuant to (i) Section 8.1(g) due to the failure to obtain Company Stockholder Approval or (ii) Section 8.1(c) and the Company Stockholder Approval shall not have been obtained prior to such termination, then the Company shall pay, within three Business Days of the date of such termination, the Expense Reimbursement Amount.

(g) Notwithstanding anything contained in this Agreement to the contrary, (i) if any Termination Fee becomes due and payable and the Company pays such Termination Fee, none of the Company, its Affiliates or its or their Representatives shall have any further liability of any kind for any reason in connection with this Agreement or the termination contemplated hereby, except as set forth in Section 8.2(b), (c) or (d); and (ii) if any Termination Fee becomes due and payable and Parent pays such Termination Fee, none of Parent, its Affiliates or its or their Representatives shall have any further liability of any kind for any reason

in connection with this Agreement or the termination contemplated hereby, except as set forth in Section 8.2(b), (c) or (d). For the avoidance of doubt, under no circumstances shall any Party be required to pay more than one Termination Fee or more than one Expense Reimbursement Amount.

(h) Any Termination Fee and Expense Reimbursement Amount shall be paid by wire transfer of same day funds to an account designated by the Other Party in writing in accordance with Section 9.2. Each Party acknowledges that the agreements contained in this Section 8.3 are an integral part of the transactions contemplated by this Agreement, and that, without these agreements, the Other Party would not enter into this Agreement. Each Party further acknowledges and agrees that a Termination Fee is not a penalty, but rather liquidated damages in amounts reasonably estimated by the Parties to compensate the Other Party for efforts and resources expended and opportunities foregone while negotiating this Agreement and in reliance on this Agreement and on the expectation of the consummation of the transactions contemplated hereby. Accordingly, if any Party fails promptly to pay the amount due pursuant to this Section 8.3, and, in order to obtain such payment, the Other Party commences an Action which results in an Order against such first Party for a Termination Fee or Expense Reimbursement Amount, the Other Party shall pay to such first Party its costs and expenses (including attorneys’ fees and expenses) in connection with such Action, together with interest on any unpaid amount of the applicable Termination Fee or Expense Reimbursement Amount at the rate on six-month U.S. Treasury obligations plus 300 basis points in effect on the date such payment was required to be made, calculated on a daily basis from the date the applicable Termination Fee or Expense Reimbursement Amount were required to be paid until the date of the actual payment.

Section 8.4 Amendment. Subject to compliance with applicable Law, this Agreement may be amended by the Parties, by action taken or authorized by their respective Board or managing member or sole member, as applicable, at any time before or after approval of the matters presented in connection with the Merger by the stockholders of the Company or Parent; provided, however, that after any approval of the transactions contemplated by this Agreement by the stockholders of the Company or Parent, there may not be, without further approval of such stockholders, any amendment of this Agreement that requires such further approval under applicable Law. This Agreement may not be amended except by an instrument in writing signed on behalf of each of the Parties.

Section 8.5 Extension; Waiver. At any time prior to the Effective Time, the Parties, by action taken or authorized by their respective Board or managing member or sole member, as applicable, may, subject to applicable Law, (a) extend the time for the performance of any of the obligations or other acts of the Other Party, (b) waive any inaccuracies in the representations and warranties of the Other Party contained in this Agreement and (c) waive compliance with any of the agreements or conditions of the Other Party contained in this Agreement; provided, however, that after any approval of the transactions contemplated by this Agreement by the stockholders of the Company and Parent, there may not be, without further approval of such stockholders any extension or waiver of this Agreement that requires such further approval under applicable Law. Any agreement on the part of a Party to any such extension or waiver shall be valid only if set forth in a written instrument signed on behalf of such Party, but such extension or waiver or failure to insist on strict compliance with an obligation, covenant, agreement or condition shall not operate as a waiver of, or estoppel with respect to, any subsequent or other failure.

Section 9.1 Non-Survival of Representations, Warranties and Agreements. None of the representations, warranties, covenants and other agreements in this Agreement or in any instrument delivered pursuant to this Agreement, including any rights arising out of any breach of such representations, warranties, covenants and other agreements, shall survive the Effective Time, except for those covenants and agreements contained herein and therein (including Article I and Article II, Section 6.6, Section 6.7, Section 6.8 and Section 6.14) that by their terms are to be performed in whole or in part after the Effective Time and this Article IX.

Section 9.2 Notices. Any notices or other communications required or permitted under, or otherwise given in connection with, this Agreement shall be in writing and shall be deemed to have been duly given (a) when delivered or sent if delivered in person or sent by facsimile transmission (provided confirmation of facsimile transmission is obtained); (b) on the fifth Business Day after dispatch by registered or certified mail (return receipt requested and first-class postage prepaid); or (c) on the next Business Day if transmitted by national overnight courier (with proof of service), in each case as follows:

Section 9.3 Headings. The table of contents and headings contained in this Agreement are for reference purposes only and shall not affect in any way the meaning or interpretation of this Agreement.

Section 9.4 Counterparts. This Agreement may be executed in one or more counterparts, all of which shall be considered one and the same agreement and shall become effective when one or more counterparts have been signed by each of the Parties and delivered to the Other Party, it being understood that each Party need not sign the same counterpart. Signatures to this Agreement transmitted by facsimile transmission, by electronic mail in “portable document format” (“.pdf”) form, or by any other electronic means intended to preserve the original graphic and pictorial appearance of a document, shall have the same effect as physical delivery of the paper document bearing the original signature.

(a) This Agreement (including the Exhibits and Schedules hereto), the Company Support Agreements, the Parent Support Agreements, the Confidentiality Agreement, and any document delivered by the Parties in connection herewith constitute the entire agreement, and supersede all prior agreements and understandings, both written and oral, among the Parties with respect to the subject matter hereof and thereof.

(b) This Agreement shall be binding upon and inure solely to the benefit of each Party, and nothing in this Agreement, express or implied, is intended to or shall confer upon any other Person any right, benefit or remedy of any nature whatsoever under or by reason of this Agreement, other than (i) Section 6.7 (which is intended to be for the benefit of the Persons covered thereby and may be enforced by such Persons who are directors or officers of the Company); (ii) the right of Parent, on behalf of its stockholders, to pursue damages and other relief, including equitable relief, in the event of the Company’s Willful and Material Breach of any of its covenants and agreements in this Agreement, which right is hereby acknowledged and agreed by the Company; and (iii) the right of the Company, on behalf of its stockholders, to pursue damages and other relief, including equitable relief, in the event of Parent’s Willful and Material Breach of any of its covenants and agreements in this Agreement, which right is hereby acknowledged and agreed by Parent; provided, however, that the rights granted pursuant to clauses (ii) and (iii) shall be enforceable on behalf of Parent’s stockholders only by Parent in its sole and absolute discretion and on behalf of the Company’s stockholders only by the Company in its sole and absolute discretion, as applicable, it being understood and agreed that any and all interests in such claims shall attach to such shares of Parent Common Stock or Company Common Stock, as applicable, and subsequently trade and transfer therewith and, consequently,

any damages, settlements or other amounts recovered or received by Parent or the Company, as applicable, with respect to such claims (net of expenses incurred by Parent or the Company, as applicable, in connection therewith) may, in Parent’s or the Company’s, as applicable, sole and absolute discretion, be (A) as applicable, distributed, in whole or in part, by Parent to Parent’s stockholders as of any record date determined by Parent or by the Company to the Company’s stockholders as of any record date determined by the Company; or (B) as applicable, retained by Parent for the use and benefit of Parent on behalf of Parent’s stockholders in any manner Parent deems fit or retained by the Company for the use and benefit of the Company on behalf of the Company’s stockholders in any manner the Company deems fit.

Section 9.6 Governing Law. This Agreement shall be governed and construed in accordance with the laws of the State of Delaware (without giving effect to choice of law principles thereof).

Section 9.7 Severability. If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any Law or public policy, all other terms and provisions of this Agreement shall nevertheless remain in full force and effect so long as the economic or legal substance of the transactions contemplated hereby is not affected in any manner materially adverse to any Party. Notwithstanding the foregoing, upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the Parties shall negotiate in good faith to modify this Agreement so as to effect the original intent of the Parties as closely as possible in an acceptable manner in order that the transactions contemplated hereby are consummated as originally contemplated to the greatest extent possible.

Section 9.8 Assignment. Neither this Agreement nor any of the rights, interests or obligations hereunder shall be assigned by any of the Parties, in whole or in part (whether by operation of Law or otherwise), without the prior written consent of the Other Party, and any attempt to make any such assignment without such consent shall be null and void, except that Merger Sub may assign, in its sole discretion, any or all of its rights, interests and obligations under this Agreement to any direct wholly-owned Subsidiary of Parent without the consent of the Company, but no such assignment shall relieve Merger Sub of any of its obligations under this Agreement. Subject to the preceding sentence, this Agreement will be binding upon, inure to the benefit of and be enforceable by the Parties and their respective successors and assigns.

Section 9.9 Submission to Jurisdiction; Waivers. Each of the Parties irrevocably agrees that any legal action or proceeding with respect to this Agreement or for recognition and enforcement of any judgment in respect hereof brought by any Other Party or its successors or assigns may be brought and determined exclusively in the Court of Chancery of the State of Delaware or, if under applicable Law exclusive jurisdiction over such matter is vested in the federal courts, any court of the United States located in the State of Delaware, and each of the Parties hereby irrevocably submits with regard to any such action or proceeding for itself and in respect to its property, generally and unconditionally, to the exclusive jurisdiction of the aforesaid courts and agrees that it will not bring any legal action or proceeding with respect to this Agreement or for recognition and enforcement of any judgment in respect hereof in any court other than the aforesaid courts. Each of the Parties hereby irrevocably waives, and agrees not to assert, by way of motion, as a defense, counterclaim or otherwise, in any action or proceeding with respect to this Agreement or for recognition and enforcement of any judgment

in respect hereof, (a) any claim that it is not personally subject to the jurisdiction of the above-named courts for any reason other than the failure to lawfully serve process, (b) that it or its property is exempt or immune from jurisdiction of any such court or from any legal process commenced in such courts (whether through service of notice, attachment prior to judgment, attachment in aid of execution of judgment, execution of judgment or otherwise), and (c) to the fullest extent permitted by applicable Law, that (i) the Action in any such court is brought in an inconvenient forum, (ii) the venue of such suit, action or proceeding is improper and (iii) this Agreement, or the subject matter hereof, may not be enforced in or by such courts. Each Party irrevocably consents to service of process in the manner provided for notices in Section 9.2; provided that nothing in this Agreement shall affect the right of any Party to serve process in any other manner permitted by Law.

Section 9.10 Specific Performance. The Parties agree that irreparable damage would occur if any provision of this Agreement were not performed in accordance with the terms hereof or otherwise breached and that monetary damages, even if available, would not be an adequate remedy therefor and therefore fully intend for specific performance to be the principal remedy for breaches of this Agreement. It is accordingly agreed that, prior to valid termination of this Agreement pursuant to Section 8.1, the Parties (on behalf of themselves and third-party beneficiaries of this Agreement) shall be entitled to an injunction or injunctions to prevent breaches of this Agreement or to enforce specifically the performance of the terms and provisions hereof. The Parties further agree not to assert that a remedy of specific enforcement is unenforceable, invalid, contrary to Law or inequitable for any reason, nor to object to a remedy of specific performance on the basis that a remedy of monetary damages would provide an adequate remedy for any such breach. Each Party further acknowledges and agrees that the agreements contained in this Section 9.10 are an integral part of the transactions contemplated by this Agreement and that, without these agreements, the Other Party would not enter into this Agreement. Each Party further agrees that no Other Party or any other Person shall be required to obtain, furnish or post any bond or similar instrument in connection with or as a condition to obtaining any remedy referred to in this Section 9.10, and each Party irrevocably waives any right it may have to require the obtaining, furnishing or posting of any such bond or similar instrument.

Section 9.11 Waiver of Jury Trial. EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (II) EACH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (III) EACH PARTY MAKES THIS WAIVER VOLUNTARILY AND (IV) EACH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 9.11.

Section 9.12 Interpretation. When a reference is made in this Agreement to an Article, a Section, Exhibit or Schedule, such reference shall be to an Article of, a Section of, or an Exhibit or Schedule to, this Agreement unless otherwise indicated. Whenever the words “include,” “includes” or “including” are used in this Agreement, they shall be deemed to be followed by the words “without limitation.” All references to “dollars” or “$” are to United States dollars. The words “hereof,” “hereto,” “hereby,” “herein” and “hereunder” and words of similar import when used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this Agreement. References to “this Agreement” shall include the Company Disclosure Letter and the Parent Disclosure Letter. The definitions contained in this Agreement are applicable to the singular as well as the plural forms of such terms and to the masculine as well as to the feminine and neuter genders of such term. This Agreement is the product of negotiation by the Parties having the assistance of counsel and other advisors. It is the intention of the Parties that this Agreement not be construed more strictly with regard to one Party than with regard to the others.

Section 9.13 Publicity. The initial press release with respect to this Agreement and the Merger shall be mutually agreed upon by Parent and the Company. Thereafter, neither Parent nor the Company shall, and neither Parent nor the Company shall permit any of its Subsidiaries to, issue or cause the publication of any press release or other public announcement with respect to, or otherwise make any public statement concerning, the transactions contemplated by this Agreement without the prior consent (which consent shall not be unreasonably withheld, delayed or conditioned) of Parent, in the case of a proposed announcement or statement by the Company, or the Company, in the case of a proposed announcement or statement by Parent; provided, however, that either Party may, without the prior consent of the Other Party (but after prior consultation with the Other Party to the extent practicable under the circumstances) issue or cause the publication of any press release or other public announcement to the extent required by Law or by the rules and regulations of the NYSE or NASDAQ, as applicable; provided, further, that each Party may make oral or written public announcements, releases or statements without complying with the foregoing procedures if the substance of such announcement, release or statement was publicly disclosed and previously subject to the foregoing requirements. Notwithstanding anything herein to the contrary, the restrictions of this Section 9.13 shall cease to apply following a Change in Company Recommendation or Change in Parent Recommendation.

Section 9.14 Definitions. As used in this Agreement the following terms have the following meanings:

“Affiliate” means, with respect to any Person, another Person that, directly or indirectly, through one or more intermediaries, controls, is controlled by, or is under common control with such Person, where “control” means the possession, directly or indirectly, of the power to direct or cause the direction of management policies of a Person, whether through the ownership of voting securities, by Contract, as trustee or otherwise.

“Alternative Transaction” means, in respect of either No-Shop Party, (i) any transaction pursuant to which any Person (or group of Persons) other than the Other Party or its Affiliates, directly or indirectly, acquires or would acquire more than 20% of the outstanding shares of Company Common Stock or Parent Common Stock, as applicable, or outstanding voting power or of any new series or new class of preferred stock that would be entitled to a class or series vote with respect to the Merger, whether from such No-Shop Party, pursuant to a tender offer or exchange offer or otherwise; (ii) any transaction pursuant to which any Person (or group of Persons) other than the Other Party or its Affiliates acquires or would acquire control of assets (including for this purpose the outstanding equity securities of any Subsidiaries of such No-Shop Party and securities of the entity surviving any merger or business combination, including any of its Subsidiaries) of such No-Shop Party or any of its Subsidiaries, and the fair market value of the assets so acquired would represent more than 20% of the fair market value of all the assets of such No-Shop Party and its Subsidiaries, taken as a whole, immediately prior to such transaction; or (iii) any other merger, consolidation, business combination, recapitalization or similar transaction involving such No-Shop Party or any of its Subsidiaries, other than the transactions contemplated by this Agreement, as a result of which the holders of shares of Company Common Stock or Parent Common Stock, as applicable, immediately prior to such transaction do not, in the aggregate, own at least 80% of the outstanding voting power of the surviving or resulting entity in such transaction immediately after the consummation thereof in substantially the same proportion as such holders held the shares of Company Common Stock or Parent Common Stock, as applicable, immediately prior to the consummation thereof.

“Bankruptcy and Equity Exception” has the meaning set forth in Section 3.3(a).

“Board” means the board of directors of any specified Person and any committees thereof.

“Business Day” means any day other than a Saturday or Sunday or any day on which the Federal Reserve Bank of New York is closed or any day on which banks in the city of New York are required to close.

“Change in Company Recommendation” has the meaning set forth in Section 6.11(b).

“Change in Parent Recommendation” has the meaning set forth in Section 6.11(b).

“COBRA” means the requirements of Part 6 of Subtitle B of Title I of ERISA and Code §4980B and of any similar state Law.

“Code” means the Internal Revenue Code of 1986, as amended, and the regulations promulgated thereunder.

“Company Credit Agreements” means (i) that certain Amended and Restated Credit Agreement, dated as of May 31, 2007, as amended by Amendment No. 1 dated as of July 31, 2009, Amendment No. 2 dated as of November 6, 2009, Amendment No. 3 dated as of November 6, 2009, Amendment No. 4 dated as of December 7, 2009, Amendment No. 5 dated as of June 9, 2010 and Amendment No. 6 dated as of December 27, 2010, by and among the Company, as borrower, Wells Fargo Bank, National Association, as administrative agent and each lender thereto; and (ii) that certain Second Lien Credit Agreement, dated as of December 27, 2010, by and among the Company, as borrower, Barclays Bank PLC, as administrative agent, and each lender thereto.

“Company Director” means (i) any person who is designated by the Company to serve as a Director of Parent at the Effective Time and (ii) after the Effective Time, any person who becomes a Director of Parent pursuant to Section 6.14(d) and who is designated by the Company Directors.

“Company Employment Agreement” means a contract, offer letter or agreement of the Company or any of its Subsidiaries with or addressed to any individual who is rendering or has rendered services thereto as an employee or consultant pursuant to which the Company or any of its Subsidiaries has any actual or contingent liability or obligation to provide compensation and/or benefits in consideration for past, present or future services.

“Company Insiders” means those officers and directors (including directors by deputization) of the Company who are subject to the reporting requirements of Section 16(a) of the Exchange Act and who are listed in the Section 16 Information.

“Company Material Adverse Effect” means a material adverse effect on the financial condition, business, assets or results of operations of the Company and its Subsidiaries, taken as a whole, excluding any effect resulting from, arising out of or relating to (a) changes in the financial or securities markets or general economic or political conditions in the United States or elsewhere in the world; (b) changes or conditions generally affecting the oil and gas exploration, development and/or production industry or industries (including changes in oil, gas or other commodity prices); (c) any change in Laws or the interpretation thereof or GAAP or the interpretation thereof; (d) the negotiation, execution, announcement or consummation of the transactions contemplated by this Agreement, including any adverse change in customer, distributor, supplier or similar relationships resulting therefrom; (e) acts of war or terrorism; (f) any failure by the Company or any of its Subsidiaries to meet any internal or published industry analyst projections or forecasts or estimates of revenues or earnings for any period (it being understood and agreed that the facts and circumstances that may have given rise or contributed to such failure that are not otherwise excluded from the definition of a Company Material Adverse Effect may be taken into account in determining whether there has been a Company Material Adverse Effect); (g) any change in the price of the Company Common Stock on NASDAQ (it being understood and agreed that the facts and circumstances that may have given rise or contributed to such change (but in no event changes in the trading price of Parent Common Stock) that are not otherwise excluded from the definition of a Company Material Adverse Effect may be taken into account in determining whether there has been a Company Material Adverse Effect); (h) disclosures in the Company Disclosure Letter or the Company SEC Documents filed since January 1, 2012 but prior to the date of this Agreement (but excluding any risk factor disclosures contained under the heading “Risk Factors” or “forward-looking statements”); and (i) compliance with the terms of, or the taking of any action required by, this Agreement; except to the extent such effects in the cases of clauses (a), (b), (c) and (e) above materially and disproportionately affect the Company and its Subsidiaries relative to other participants in the industry or industries in which the Company and its Subsidiaries operate (in which event the extent of such material and disproportionate effect may be taken into account in determining whether a Company Material Adverse Effect has occurred).

“Company Oil and Gas Agreements” has the meaning set forth in Section 3.15(a).

“Company Related Entity Contract” has the meaning set forth in Section 3.26(c).

“Company Stock Plans” means, collectively, the Company 2005 Stock Incentive Plan and Long-Term Incentive Plan.

“Confidentiality Agreement” means the Mutual Confidentiality Agreement, dated January 21, 2013, between Parent and the Company.

“Contracts” means, with respect to any Person, any of the agreements, contracts, leases (whether for real or personal property), notes, bonds, mortgages, indentures, deeds of trust, loans, evidences of Indebtedness, letters of credit, settlement agreements, franchise agreements, undertakings, employment agreements, license agreements, or similar instruments to which such Person or its Subsidiaries is a party, whether oral or written.

“Credit Agreements” means the Company Credit Agreements and the Parent Credit Agreement (or renewals, extensions or replacements therefor that do not increase the aggregate amount available thereunder and that do not provide for any termination fees or penalties, prohibit pre-payments or provide for any pre-payment penalties, or contain any like provisions limiting or otherwise affecting the ability of the applicable Party or its Subsidiaries or successors to terminate or pre-pay such facilities, or contain financial terms less favorable, in the aggregate, than existing credit facilities, and as they may be so renewed, extended or replaced).

“Decommissioning” means (i) the abandonment, removal, decommissioning or plugging of any Oil and Gas Properties; (ii) as applicable, clearing the seafloor of any or all obstructions and debris created by or related to any Oil and Gas Properties, including the operation thereof; and (iii) the investigation, clean-up and restoration activities related to (i) and/or (ii).

“Defensible Title” means such title that is free from reasonable doubt to the end that a prudent person engaged in the business of purchasing and owning, developing, and operating producing Oil and Gas Properties in the geographical areas in which they are located, with knowledge of all of the facts and their legal bearing, would be willing to accept the same acting reasonably.

“Derivative” means a derivative transaction within the coverage of Statement of Financial Accounting Standards No. 133, including any swap transaction, option, hedge, warrant, forward purchase or sale transaction, future transaction, cap transaction, floor transaction or collar transaction relating to one or more currencies, commodities, bonds, equity securities, loans, interest rates, credit-related events or conditions or any indexes, or any other similar

transaction (including any option with respect to any of these transactions) or combination of any of these transactions, including collateralized mortgage obligations or other similar instruments or any debt or equity instruments evidencing or embedding any such types of transactions, and any related credit support, collateral, transportation or other similar agreements related to such transactions.

“Environmental Laws” means any and all Laws that (i) regulate or relate to the protection of human health and safety to the extent exposed to harmful or deleterious substances in the workplace, protection or clean-up of natural resources (including wildlife and plants) and the environment (including soils, subsurface soils, groundwater, surface and subsurface water, waterways and ambient air); (ii) regulate or relate to the treatment, storage, handling, packaging, labeling, transport or disposal, arrangement for transport or disposal, or release of, or exposure to, any pollutants, contaminants, hazardous substances, wastes or similarly regulated materials; or (iii) impose liability with respect to any of the foregoing, including property and business transfer Laws to the extent relating to identification and allocation of environmental liabilities, and Laws applicable to the offshore exploration, development and production of oil and natural gas, including the regulations applicable to oil and gas and sulphur operations in the Outer Continental Shelf contained in Title 30, Part 250 of the Code of Federal Regulations.

“Environmental Permit” means any permit, certificate (including any drilling safety certification or any certificate of financial responsibility at the federal or state levels), consent, registration, exemption, variance, plan (including Spill Prevention, Control and Countermeasures plan, Oil Spill Response plan, Exploration Plan, Development and Production Plan, and Development Operations Coordination Document), approval, identification number, license and other authorization issued by any Governmental Entity or required under any applicable Environmental Law.

“Equity Interest” means any share, capital stock, partnership, limited liability company, membership, member or similar interest in any Person, and any option, warrant, right or security (including debt securities) convertible, exchangeable or exercisable therefor or pursuant thereto.

“Executive Officer Employment Agreements” has the meaning set forth in Section 6.14(c)(ii).

“Hazardous Material” means petroleum hydrocarbons, petroleum products including gasoline and diesel fuel, oil and natural gas exploration and production wastes including produced water, natural gas, crude oil and its derivatives, radioactive materials, friable asbestos and friable asbestos-containing materials, radon gas, urea formaldehyde, polychlorinated biphenyls and any other chemicals, materials, substances or wastes in any amount or concentration that are regulated pursuant to or the basis for liability pursuant to any Environmental Law, including any “hazardous substance,” “hazardous material,” “hazardous waste,” “toxic substance,” “pollutant,” “regulated substance,” “solid waste,” “contaminant” or words of similar import defined under any Environmental Law.

“Hydrocarbons” means oil, condensate, gas, casinghead gas and other liquid or gaseous hydrocarbons.

“Indebtedness” means, with respect to a Person, (i) all obligations of such Person for borrowed money, (ii) all obligations of such Person evidenced by bonds, debentures, notes and similar agreements, (iii) all leases of such Person capitalized pursuant to GAAP, and (iv) all obligations of such Person under sale-and-lease back transactions, agreements to repurchase securities sold and other similar financing transactions.

“Intellectual Property” means trademarks, service marks, brand names, certification marks, trade dress and other indications of origin, the goodwill associated with the foregoing and registrations in any domestic or foreign jurisdiction of, and applications in any such jurisdiction to register, the foregoing, including any extension, modification or renewal of any such

registration or application; inventions, discoveries and ideas, whether patentable or not, in any domestic or foreign jurisdiction; patents, applications for patents (including divisions, continuations, continuations in part and renewal applications), utility models, statutory invention registrations, and any renewals, extensions, reexaminations or reissues thereof, in any such jurisdiction; non-public information, trade secrets and confidential information and rights in any domestic or foreign jurisdiction to limit the use or disclosure thereof by any Person; writings and other works of authorship, whether copyrightable or not, in any such jurisdiction; and registrations or applications for registration of copyrights in any domestic or foreign jurisdiction, and any renewals or extensions thereof; and any similar intellectual property or proprietary rights.

“Knowledge” means (i) with respect to the Company, the actual knowledge of any of the Persons listed in Section 9.14(a) of the Company Disclosure Letter and (ii) with respect to Parent or Merger Sub, the actual knowledge of any of the Persons listed in Section 9.14(a) of the Parent Disclosure Letter.

“Law” means any applicable federal, regional, state, local, national or supranational or foreign law (including common law), statute, ordinance, rule, regulation, Order, code, ruling, decree, arbitration award, legally enforceable requirement, license or permit (including any Environmental Permit) of any Governmental Entity. For avoidance of doubt, “Law” includes any and all “Environmental Laws.”

“Lien” means any lien, mortgage, pledge, encumbrance, condition, restriction, lease, license, security interest or deed of trust.

“Oil and Gas Properties” means all interests in and rights with respect to oil, gas, mineral, and similar properties of any kind and nature, including working, leasehold and mineral interests and operating rights and royalties, overriding royalties, production payments, net profit interests and other non-working interests and non-operating interests (including all oil and gas leases, operating agreements, unitization and pooling agreements and orders, division orders, transfer orders, mineral deeds, royalty deeds, and in each case, interests thereunder), surface interests, fee interests, reversionary interests, reservations, and concessions related thereto.

“Order” means any order, judgment, injunction, decision, opinion or decree of a Governmental Entity.

“Other Party” means, with respect to the Company, Parent or Merger Sub and means, with respect to Parent or Merger Sub, the Company, unless the context otherwise requires.

“Parent Credit Agreement” means that certain Second Amended and Restated Credit Agreement dated as of October 1, 2010, as amended by First Amendment to the Second Amended and Restated Credit Agreement dated as of October 20, 2010, Second Amendment to the Second Amended and Restated Credit Agreement dated as of June 27, 2011, and Third Amendment to the Second Amended and Restated Credit Agreement dated as of November 1, 2011, by and among Parent and certain of its subsidiaries and Amegy Bank National Association, as administrative agent and letter of credit issuer.

“Parent Director” means (i) any person who is designated by Parent to serve as a Director of Parent at the Effective Time and (ii) after the Effective Time, any person who becomes a Director of Parent pursuant to Section 6.14(d) and who is designated by the Parent Directors.

“Parent Employment Agreement” means a contract, offer letter or agreement of Parent or any of its Subsidiaries with or addressed to any individual who is rendering or has rendered services thereto as an employee or consultant pursuant to which Parent or any of its Subsidiaries has any actual or contingent liability or obligation to provide compensation and/or benefits in consideration for past, present or future services.

“Parent Material Adverse Effect” means a material adverse effect on the financial condition, business, assets or results of operations of Parent and its Subsidiaries, taken as a whole, excluding any effect resulting from, arising out of or relating to (a) changes in the financial or securities markets or general economic or political conditions in the United States or elsewhere in the world; (b) changes or conditions generally affecting the oil and gas exploration, development and/or production industry or industries (including changes in oil, gas or other commodity prices); (c) any change in Laws or the interpretation thereof or GAAP or the interpretation thereof; (d) the negotiation, execution, announcement or consummation of the transactions contemplated by this Agreement, including any adverse change in customer, distributor, supplier or similar relationships resulting therefrom; (e) acts of war or terrorism; (f) any failure by Parent or any of its Subsidiaries to meet any internal or published industry analyst projections or forecasts or estimates of revenues or earnings for any period (it being understood and agreed that the facts and circumstances that may have given rise or contributed to such failure that are not otherwise excluded from the definition of a Parent Material Adverse Effect may be taken into account in determining whether there has been a Parent Material Adverse Effect); (g) any change in the price of Parent Common Stock on the NYSE (it being understood and agreed that the facts and circumstances that may have given rise or contributed to such change (but in no event changes in the trading price of Company Common Stock) that are not otherwise excluded from the definition of a Parent Material Adverse Effect may be taken into account in determining whether there has been a Parent Material Adverse Effect); (h) disclosures in the Parent Disclosure Letter or the Parent SEC Documents filed since June 30, 2012 but prior to the date of this Agreement (but excluding any risk factor disclosures contained under the heading “Risk Factors” or “forward-looking statements”); and (i) compliance with the terms of, or the taking of any action required by, this Agreement; except to the extent such effects in the cases of clauses (a), (b), (c) and (e) above materially and disproportionately affect Parent and its Subsidiaries relative to other participants in the industry or industries in which Parent and its Subsidiaries operate (in which event the extent of such material and disproportionate effect may be taken into account in determining whether a Parent Material Adverse Effect has occurred).

“Parent Oil and Gas Agreements” has the meaning set forth in Section 4.15(a).

“Parent Related Entity Contract” has the meaning set forth in Section 4.26(c).

“Parent Share Cash Value” means the closing price for a share of Parent Common Stock as reported on the NYSE on the first day of trading following the date on which the Effective Time occurs.

“Permitted Liens” means (i) Liens for Taxes not yet due and payable or that are being contested in good faith by appropriate proceedings and for which adequate reserves in accordance with GAAP have been established in the latest Company Financial Statements or Parent Financial Statements, as applicable, (ii) Liens in favor of vendors, carriers, warehousemen, repairmen, mechanics, workmen, materialmen, construction or similar Liens or other encumbrances arising by operation of Law or Contract and that secure obligations that are not yet due and payable or that are being contested in good faith by appropriate proceedings and for which adequate reserves in accordance with GAAP have been established in the latest Company Financial Statements or Parent Financial Statements, as applicable, (iii) Liens affecting the interest of the grantor of any easements benefiting owned real property and Liens of record attaching to real property, fixtures or leasehold improvements, which would not materially impair the use of the real property in the operation of the business thereon, (iv) Liens, exceptions, defects or irregularities in title, easements, imperfections of title, claims, charges, security interests, rights-of-way, covenants, restrictions, and other similar matters that would not, individually or in the aggregate, reasonably be expected to materially impair the continued use and operation of the assets to which they relate in the business of such entity and its Subsidiaries

as presently conducted, (v) Liens created under any Company Oil and Gas Agreement or Parent Oil and Gas Agreement, as applicable, that secure obligations that are not yet due and payable or that are being contested in good faith by appropriate proceedings and for which adequate reserves in accordance with GAAP have been established in the latest Company Financial Statements or Parent Financial Statements, as applicable; and (vi) Liens existing or expressly permitted pursuant to the Credit Agreements.

“Person” means an individual, corporation, limited liability company, partnership, joint venture, association, trust, unincorporated organization, Governmental Entity, or other entity or group (as defined in the Exchange Act).

“Related Entity” means, with respect to a Party, any Person that is not a Subsidiary of such Party, (i) that is an Affiliate of such Party or (ii) in which such Party or a Subsidiary of such Party directly owns an Equity Interest. For the avoidance of doubt, with respect to Parent, the Persons set forth in Section 9.14(b) of the Parent Disclosure Letter shall be Related Entities of Parent for purposes of this Agreement.

“Representative” means, with respect to any Party, such Party or any of its Subsidiaries’ respective directors, officers, partners, employees, investment bankers, financing sources, financial advisors, attorneys, accountants or other advisors, agents or other representatives.

“Section 16 Information” means information accurate in all material respects regarding the Company Insiders, the number of shares of Company Common Stock held by each such Company Insider and expected to be exchanged for Parent Common Stock in the Merger, and the number and description of Company Stock Options or Company Restricted Stock held by each such Company Insider, as applicable, in connection with the Merger; provided that the requirement for a description of any Company Stock Options shall be deemed to be satisfied if copies of all Company Stock Plans, and forms of agreements evidencing grants thereunder, under which such Company Stock Options have been granted, have been made available to Parent.

“Stockholder Approval” means the Company Stockholder Approval or the Parent Stockholder Approval, as applicable.

“Subsidiary” means any corporation, partnership, joint venture or other legal entity of which Parent, the Company or such other Person, as the case may be (either alone or through or

together with any other Subsidiary), owns, directly or indirectly, a majority of the stock or other Equity Interests, the holders of which are generally entitled to vote for the election of the board of directors or other governing body of such corporation, partnership, joint venture or other legal entity, or any Person that would otherwise be deemed a “subsidiary” under Rule 12b-2 promulgated under the Exchange Act.

“Superior Proposal” means, with respect to a No-Shop Party, a bona fide written Acquisition Proposal (with the references to 20% and 80% included in the definition of Alternative Transaction changed to 50%) for such No-Shop Party which the Board of such No-Shop Party determines in good faith, after consultation with its financial advisors and outside legal counsel, and taking into account such facts as the Board of such No-Shop Party considers to be appropriate (including conditions to and expected timing and risks of consummation, the ability of the Person making such proposal to obtain financing for such Acquisition Proposal, and any break-up fees or expense reimbursement provisions), (i) is reasonably capable of being consummated in accordance with its terms, and (ii) if consummated, would result in a transaction more favorable to the holders of common stock of such No-Shop Party than the Merger.

“Superior Proposal Notice Period” has the meaning set forth in Section 6.11(c)(ii).

“Tax Authority” means, with respect to any Tax, the Governmental Entity or political subdivision thereof that imposes such Tax, and the agency (if any) charged with the collection of such Tax for such entity or subdivision, including any governmental or quasi-Governmental Entity or agency that imposes, or is charged with collecting, social security or similar charges or premiums.

“Tax Return” means all Federal, state, local, provincial and foreign Tax returns, declarations, statements, reports, schedules, forms and information returns and, in each case, any amendments thereto.

“Taxes” includes all forms of taxation, whenever created or imposed, and whether of the United States or elsewhere, and whether imposed by a local, municipal, governmental, state, foreign, Federal or other Governmental Entity, or in connection with any agreement with respect to Taxes, including all interest, penalties and additions imposed with respect to such amounts.

“Third Party” means any Person, including as defined in Section 13(d) of the Exchange Act, other than Parent, the Company or any of their respective Affiliates, and the Representatives of such Person, in each case, acting in such capacity.

“Willful and Material Breach” means a material breach, or failure to perform, that is the consequence of an act or omission of a Representative or a Subsidiary of the Company or Parent, as applicable, with the knowledge that the taking of, or failure to take, such act would, or would reasonably be expected to, cause a material breach of this Agreement.

IN WITNESS WHEREOF, the Parties have caused this Agreement to be signed as of the date first written above.


CONTANGO OIL & GAS COMPANY

By:	/s/ Joseph J. Romano
	Name:	Joseph J. Romano
	Title:	President and Chief Executive Officer

CONTANGO ACQUISITION, INC.

By:	/s/ Joseph J. Romano
	Name:	Joseph J. Romano
	Title:	President and Chief Executive Officer

CRIMSON EXPLORATION INC.

By:	/s/ Allan D. Keel
	Name:	Allan D. Keel
	Title:	President and Chief Executive Officer


(a)	if to Parent or Merger Sub, to:

	Contango Oil & Gas Company
	3700 Buffalo Speedway, Suite 960
	Houston TX, 77098
	Attention: Chairman, President and Chief Executive Officer
	Facsimile: (713) 960-1065

	with a copy to:

	Morgan, Lewis & Bockius LLP
	1701 Market Street
	Philadelphia, PA 19103
	Attention:	Richard A. Shortz
		Richard B. Aldridge
	Facsimile: (215) 963-5001

(b)	if to the Company, to:

	Crimson Exploration Inc
	717 Texas Ave., Suite 2900
	Houston, Texas 77002
	Attention: General Counsel
	Facsimile: (713) 236-4413


		with a copy to:

		Vinson & Elkins LLP
		1001 Fannin Street, Suite 2500
		Houston, TX 77002
		Attention:		James M. Prince
				Stephen M. Gill
		Facsimile: (713) 615-5962


			Page

Article I THE MERGER				2

	Section 1.1	The Merger		2

	Section 1.2	Closing		2

	Section 1.3	Effective Time		2

	Section 1.4	Effects of the Merger		2

	Section 1.5	Bylaws		3

	Section 1.6	Certificate of Incorporation		3

	Section 1.7	Officers and Directors		3

	Section 1.8	Effect on Capital Stock		3

	Section 1.9	Company Stock Options and Other Equity-Based Awards		4

	Section 1.10	Certain Adjustments		5

	Section 1.11	Tax Consequences		5

Article II EXCHANGE OF SHARES				5

	Section 2.1	Exchange Agent		5

	Section 2.2	Exchange Procedures		6

	Section 2.3	Distributions with Respect to Unexchanged Shares		7

	Section 2.4	No Further Ownership Rights		7

	Section 2.5	No Fractional Shares of Parent Common Stock		7

	Section 2.6	Termination of Exchange Fund		8

	Section 2.7	No Liability		8

	Section 2.8	Investment of the Exchange Fund		8

	Section 2.9	Lost Certificates		8

	Section 2.10	Withholding Rights		9

	Section 2.11	Further Assurances		9

	Section 2.12	Stock Transfer Books		9

Article III REPRESENTATIONS AND WARRANTIES OF THE COMPANY				10

	Section 3.1	Organization, Good Standing and Qualification		10

	Section 3.2	Capital Structure		10

	Section 3.3	Corporate Authority		12

	Section 3.4	Governmental Filings; No Violations, Etc		13

	Section 3.5	Company Reports; Financial Statements		14


			Page

	Section 3.6	Absence of Certain Changes		15

	Section 3.7	No Undisclosed Material Liabilities		15

	Section 3.8	Litigation		16

	Section 3.9	Compliance with Laws		16

	Section 3.10	Properties		17

	Section 3.11	Contracts		17

	Section 3.12	Employee Benefit Plans		19

	Section 3.13	Labor Matters		21

	Section 3.14	Tax		22

	Section 3.15	Oil and Gas Matters		23

	Section 3.16	Intellectual Property		25

	Section 3.17	Environmental Matters		26

	Section 3.18	Insurance		28

	Section 3.19	Regulatory Matters; Permits		28

	Section 3.20	Interested Party Transactions		29

	Section 3.21	Company Information		29

	Section 3.22	Derivatives		29

	Section 3.23	Company Ownership of Parent Securities		29

	Section 3.25	Brokers and Finders		30

	Section 3.26	Related Entity Representations		30

	Section 3.27	No Additional Representations		31

Article IV REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUB				31

	Section 4.1	Organization, Good Standing and Qualification		32

	Section 4.2	Capital Structure		32

	Section 4.3	Corporate Authority		34

	Section 4.4	Governmental Filings; No Violations, Etc		35

	Section 4.5	Parent Reports; Financial Statements		36

	Section 4.6	Absence of Certain Changes		37

	Section 4.7	No Undisclosed Material Liabilities		38

	Section 4.8	Litigation		38


			Page

	Section 4.9	Compliance with Laws		38

	Section 4.10	Properties		39

	Section 4.11	Contracts		39

	Section 4.12	Employee Benefit Plans		41

	Section 4.13	Labor Matters		43

	Section 4.14	Tax		44

	Section 4.15	Oil and Gas Matters		44

	Section 4.16	Intellectual Property		47

	Section 4.17	Environmental Matters		48

	Section 4.18	Insurance		49

	Section 4.19	Regulatory Matters; Permits		49

	Section 4.20	Interested Party Transactions		50

	Section 4.21	Parent Information		50

	Section 4.22	Derivatives		51

	Section 4.23	Parent Ownership of Company Securities		51

	Section 4.24	Opinion of Financial Advisor		51

	Section 4.25	Brokers and Finders		51

	Section 4.26	Related Entity Representations		51

	Section 4.27	No Additional Representations		52

Article V COVENANTS RELATING TO CONDUCT OF BUSINESS				53

	Section 5.1	Conduct of Businesses Prior to the Effective Time		53

	Section 5.2	Forbearances		54

	Section 5.3	No Control of the Other Party’s Business		57

Article VI ADDITIONAL AGREEMENTS				57

	Section 6.1	Proxy Statement; Registration Statement		57

	Section 6.2	Access to Information		59

	Section 6.3	Stockholder Meetings		59

	Section 6.4	Legal Conditions to Merger		60

	Section 6.5	NYSE Listing		60

	Section 6.6	Employee Matters		61

	Section 6.7	Indemnification; Directors’ and Officers’ Insurance		63


			Page

	Section 6.8	Additional Agreements		64

	Section 6.9	Advice of Changes		65

	Section 6.10	Exemption from Liability Under Section 16(b)		65

	Section 6.11	No Solicitation		65

	Section 6.13	Reorganization Tax Matters		69

	Section 6.14	Certain Matters Relating to Parent		69

	Section 6.15	Transaction Litigation		71

Article VII CONDITIONS PRECEDENT				71

	Section 7.1	Conditions to Each Party’s Obligation to Effect the Merger		71

	Section 7.2	Additional Conditions to Obligations of Parent and Merger Sub		72

	Section 7.3	Additional Conditions to Obligations of the Company		73

Article VIII TERMINATION AND AMENDMENT				74

	Section 8.1	Termination		74

	Section 8.2	Effect of Termination		75

	Section 8.3	Termination Fee		75

	Section 8.4	Amendment		77

	Section 8.5	Extension; Waiver		77

Article IX GENERAL PROVISIONS				78

	Section 9.1	Non-Survival of Representations, Warranties and Agreements		78

	Section 9.2	Notices		78

	Section 9.3	Headings		79

	Section 9.4	Counterparts		79

	Section 9.5	Entire Agreement; No Third-Party Beneficiaries		79

	Section 9.6	Governing Law		80

	Section 9.7	Severability		80

	Section 9.8	Assignment		80

	Section 9.9	Submission to Jurisdiction; Waivers		80

	Section 9.10	Specific Performance		81

	Section 9.11	Waiver of Jury Trial		81

	Section 9.12	Interpretation		82

	Section 9.14	Definitions		82


Exhibit A		Surviving Corporation Bylaws

Exhibit B		Surviving Corporation Certificate of Incorporation

Exhibit C		New Parent Bylaws