10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)
☒	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2023

or
☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	FOR THE TRANSITION PERIOD FROM TO
	COMMISSION FILE NUMBER	001-38629

EQUITRANS MIDSTREAM CORPORATION

(Exact name of registrant as specified in its charter) 

Pennsylvania	83-0516635
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)

2200 Energy Drive, Canonsburg, Pennsylvania     15317

(Address of principal executive offices)     (Zip code)

(724) 271-7600

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, no par value	ETRN	New York Stock Exchange

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

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒  No  ☐

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

Large Accelerated Filer	☒	Accelerated Filer	☐	Emerging Growth Company	☐
Non-Accelerated Filer	☐	Smaller Reporting Company	☐

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

 Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).        Yes  ☐  No  ☒

The number of shares of common stock outstanding (in thousands), as of July 31, 2023: 433,261

EQUITRANS MIDSTREAM CORPORATION

Index

			Page No.
Glossary of Commonly Used Terms, Abbreviations and Measurements			3
Part I.	Financial Information:
Item 1.		Financial Statements (Unaudited):
		Statements of Consolidated Comprehensive Income for the Three and Six Months Ended June 30, 2023 and 2022	5
		Statements of Consolidated Cash Flows for the Six Months Ended June 30, 2023 and 2022	6
		Consolidated Balance Sheets as of June 30, 2023 and December 31, 2022	7
		Statements of Consolidated Equity and Mezzanine Equity for the Three and Six Months Ended June 30, 2023 and 2022	8
		Notes to Consolidated Financial Statements	10
Item 2.		Management's Discussion and Analysis of Financial Condition and Results of Operations	19
Item 3.		Quantitative and Qualitative Disclosures About Market Risk	36
Item 4.		Controls and Procedures	38
Part II.	Other Information:
Item 1.		Legal Proceedings	39
Item 1A.		Risk Factors	42
Item 2.		Unregistered Sales of Equity Securities and Use of Proceeds	43
Item 5.		Other Information	43
Item 6.		Exhibits	44
Signature			45

2

EQUITRANS MIDSTREAM CORPORATION

Glossary of Commonly Used Terms, Abbreviations and Measurements

2021 Water Services Agreement – that certain mixed-use water services agreement entered into on October 22, 2021 by the Company and EQT (as defined below), as subsequently amended, which became effective on March 1, 2022.

Allowance for Funds Used During Construction (AFUDC) – carrying costs for the construction of certain long-lived regulated assets are capitalized and amortized over the related assets' estimated useful lives. The capitalized amount for construction of regulated assets includes interest cost and a designated cost of equity for financing the construction of these regulated assets.

Amended EQM Credit Facility – that certain Third Amended and Restated Credit Agreement, dated as of October 31, 2018, among EQM, as borrower, Wells Fargo Bank, National Association, as the administrative agent, swing line lender, and a letter of credit (L/C) issuer, the lenders party thereto from time to time and any other persons party thereto from time to time (as amended by that certain First Amendment to Third Amended and Restated Credit Agreement, dated as of March 30, 2020, by that certain Second Amendment to Third Amended and Restated Credit Agreement, dated April 16, 2021, by that certain Third Amendment to the Third Amended and Restated Credit Agreement, dated as of April 22, 2022, and as may be further amended, restated, amended and restated, supplemented or otherwise modified from time to time). For the avoidance of doubt, any reference to the Amended EQM Credit Facility as of any particular date shall mean the Amended EQM Credit Facility as in effect on such date.

Annual Revenue Commitments (ARC or ARCs) – contractual term in a water services agreement that obligates the customer to pay for a fixed amount of water services annually.

Appalachian Basin – the area of the United States composed of those portions of West Virginia, Pennsylvania, Ohio, Maryland, Kentucky and Virginia that lie in the Appalachian Mountains.

British thermal unit – a measure of the amount of energy required to raise the temperature of one pound of water one-degree Fahrenheit.

delivery point – the point where gas is delivered into a downstream gathering system or transmission pipeline.

EQM – EQM Midstream Partners, LP and its subsidiaries. EQM is a wholly owned subsidiary of Equitrans Midstream Corporation.

EQT – EQT Corporation (NYSE: EQT) and its subsidiaries.

EQT Global GGA – that certain Gas Gathering and Compression Agreement entered into on February 26, 2020 (the EQT Global GGA Effective Date) by the Company with EQT and certain affiliates of EQT for the provision of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia, as subsequently amended.

Equitrans Midstream Preferred Shares –    the Equitrans Midstream Corporation Series A Perpetual Convertible Preferred Shares, no par value.

firm contracts – contracts for gathering, transmission, storage and water services that reserve an agreed upon amount of pipeline or storage capacity regardless of the capacity used by the customer during each month, and generally obligate the customer to pay a fixed, monthly charge.

firm reservation fee revenues – contractually obligated revenues that include fixed monthly charges under firm contracts and fixed volumetric charges under MVC (as defined below) and ARC (as defined above) contracts.

gas – natural gas.

liquefied natural gas (LNG) – natural gas that has been cooled to minus 161 degrees Celsius for transportation, typically by ship. The cooling process reduces the volume of natural gas by 600 times.

Minimum volume commitments (MVC or MVCs) – contracts for gathering or water services that obligate the customer to pay for a fixed amount of volumes daily, monthly, annually or over the life of the contract.

Mountain Valley Pipeline (MVP) – an estimated 300-mile, 42-inch diameter natural gas interstate pipeline with a targeted capacity of 2.0 Bcf per day that is designed to span from the Company's existing transmission and storage system in Wetzel County, West Virginia to Pittsylvania County, Virginia, providing access to the growing Southeast demand markets.

3

Mountain Valley Pipeline, LLC (MVP Joint Venture) – a joint venture among the Company and, as applicable, affiliates of each of NextEra Energy, Inc., Consolidated Edison, Inc. (Con Edison), AltaGas Ltd. and RGC Resources, Inc. (RGC) that is constructing the MVP and the MVP Southgate (as defined below) projects.

MVP Southgate – a contemplated interstate pipeline that was approved by the FERC to extend approximately 75 miles from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The project is subject to active negotiations between the MVP Joint Venture and the project shipper, Dominion Energy North Carolina, and a prospective customer as discussed in "MVP Southgate Project" in "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q.

natural gas liquids (NGLs) – those hydrocarbons in natural gas that are separated from the gas as liquids through the process of absorption, condensation, adsorption or other methods in gas processing plants. Natural gas liquids include ethane, propane, pentane, butane and iso-butane.

Preferred Interest – the preferred interest that the Company has in EQT Energy Supply, LLC (EES), a subsidiary of EQT.

Rager Mountain natural gas storage field incident – that certain venting of natural gas, of which the Company first became aware on November 6, 2022, at a storage well (well 2244) at Equitrans, L.P.'s Rager Mountain natural gas storage facility, located in Jackson Township, a remote section of Cambria County, Pennsylvania.

throughput – the volume of natural gas transported or passing through a pipeline, plant, terminal or other facility during a particular period.

wellhead – the equipment at the surface of a well used to control the well's pressure and the point at which the hydrocarbons and water exit the ground. 

Unless the context otherwise requires, a reference to a “Note” herein refers to the accompanying Notes to Consolidated Financial Statements contained in Part I, "Item 1. Financial Statements" of this Quarterly Report on Form 10-Q and all references to "we," "us," "our" and "the Company" refer to Equitrans Midstream Corporation and its subsidiaries.

Abbreviations	Measurements
ASC – Accounting Standards Codification	Btu = one British thermal unit
ASU – Accounting Standards Update	BBtu = billion British thermal units
EPA – United States Environmental Protection Agency	Bcf   = billion cubic feet
FASB – Financial Accounting Standards Board	Mcf = thousand cubic feet
FERC – United States Federal Energy Regulatory Commission	MMBtu = million British thermal units
GAAP – United States Generally Accepted Accounting Principles	MMcf  = million cubic feet
IRS – United States Internal Revenue Service	MMgal  = million gallons
NGA – Natural Gas Act of 1938, as amended
NYMEX – New York Mercantile Exchange
NYSE – New York Stock Exchange
SEC – United States Securities and Exchange Commission

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PART I.  FINANCIAL INFORMATION

Item 1. Financial Statements

EQUITRANS MIDSTREAM CORPORATION

Statements of Consolidated Comprehensive Income (Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022 (a)		2023		2022 (a)
	(Thousands, except per share amounts)
Operating revenues	$	318,469	$	328,611	$	694,806	$	670,757
Operating expenses:
Operating and maintenance	45,767		32,442		88,629		65,523
Selling, general and administrative	56,932		29,009		89,554		58,726
Depreciation	70,031		67,657		139,435		134,700
Amortization of intangible assets	16,205		16,205		32,410		32,410
Total operating expenses	188,935		145,313		350,028		291,359
Operating income	129,534		183,298		344,778		379,398
Equity income (b)	23,686		39		23,808		43
Other income, net	19,809		4,148		11,707		5,659
Loss on extinguishment of debt	—		(24,937)		—		(24,937)
Net interest expense	(103,644)		(95,117)		(208,601)		(188,238)
Income before income taxes	69,385		67,431		171,692		171,925
Income tax expense (benefit)	465		2,692		(3,319)		8,293
Net income	68,920		64,739		175,011		163,632
Net income attributable to noncontrolling interest	1,675		3,948		6,084		7,723
Net income attributable to Equitrans Midstream	67,245		60,791		168,927		155,909
Preferred dividends	14,628		14,628		29,256		29,256
Net income attributable to Equitrans Midstream common shareholders	$	52,617	$	46,163	$	139,671	$	126,653
Earnings per share of common stock attributable to Equitrans Midstream common shareholders - basic	$	0.12	$	0.11	$	0.32	$	0.29
Earnings per share of common stock attributable to Equitrans Midstream common shareholders - diluted	$	0.12	$	0.11	$	0.32	$	0.29
Weighted average common shares outstanding - basic	433,961		433,333		433,834		433,326
Weighted average common shares outstanding - diluted	435,476		434,025		434,640		433,970
Statement of comprehensive income:
Net income	$	68,920	$	64,739	$	175,011	$	163,632
Other comprehensive income, net of tax:
Pension and other post-retirement benefits liability adjustment, net of tax expense of $7, $12, $14 and $24	22		34		44		68
Other comprehensive income	22		34		44		68
Comprehensive income	68,942		64,773		175,055		163,700
Less: Comprehensive income attributable to noncontrolling interest	1,675		3,948		6,084		7,723
Less: Comprehensive income attributable to preferred dividends	14,628		14,628		29,256		29,256
Comprehensive income attributable to Equitrans Midstream common shareholders	$	52,639	$	46,197	$	139,715	$	126,721
Dividends declared per common share	$	0.15	$	0.15	$	0.30	$	0.30

(a)Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

(b)Represents equity income from Mountain Valley Pipeline, LLC (the MVP Joint Venture). See Note 4.

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

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EQUITRANS MIDSTREAM CORPORATION

Statements of Consolidated Cash Flows (Unaudited)

	Six Months Ended June 30,
	2023		2022 (a)
	(Thousands)
Cash flows from operating activities:
Net income	$	175,011	$	163,632
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	139,435		134,700
Amortization of intangible assets	32,410		32,410
Provision for credit losses on accounts receivable	1,258		—
Deferred income taxes	(6,457)		5,372
Equity income (b)	(23,808)		(43)
Other income, net	(11,323)		(5,410)
Loss on extinguishment of debt	—		24,937
Non-cash long-term compensation expense	26,166		8,484
Changes in other assets and liabilities:
Accounts receivable	40,862		38,760
Accounts payable	(12,474)		(339)
Accrued interest	(2,386)		(15,256)
Deferred revenue	157,783		176,206
Other assets and other liabilities	6,797		(26,481)
Net cash provided by operating activities	523,274		536,972
Cash flows from investing activities:
Capital expenditures	(171,940)		(163,139)
Capital contributions to the MVP Joint Venture	(70,533)		(111,752)
Principal payments received on the Preferred Interest	2,878		2,721
Net cash used in investing activities	(239,595)		(272,170)
Cash flows from financing activities:
Proceeds from revolving credit facility borrowings	215,000		140,000
Payments on revolving credit facility borrowings	(180,000)		(224,500)
Proceeds from the issuance of long-term debt	—		1,000,000
Debt discounts, debt issuance costs and credit facility arrangement fees	(60)		(19,911)
Payment for retirement of long-term debt	(98,941)		(1,021,459)
Dividends paid to holders of Equitrans Midstream Preferred Shares	(29,256)		(29,256)
Dividends paid to common shareholders	(129,941)		(129,816)
Distributions paid to noncontrolling interest	(20,000)		—
Other items	(1,307)		—
Net cash used in financing activities	(244,505)		(284,942)
Net change in cash and cash equivalents	39,174		(20,140)
Cash and cash equivalents at beginning of period	67,898		134,661
Cash and cash equivalents at end of period	$	107,072	$	114,521
Cash paid during the period for:
Interest, net of amount capitalized	$	208,269	$	198,463
Income taxes, net	$	550	$	1,243

(a)Certain line items of the previously issued unaudited interim consolidated financial statements for the six months ended June 30, 2022 have been revised. See Note 1 for more information.

(b)Represents equity income from the MVP Joint Venture. See Note 4.

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

6

EQUITRANS MIDSTREAM CORPORATION

Consolidated Balance Sheets (Unaudited)

	June 30, 2023		December 31, 2022
	(Thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	107,072	$	67,898
Accounts receivable (net of allowance for credit losses of $4,289 and $3,031 as of June 30, 2023 and December 31, 2022, respectively)	237,630		246,887
Other current assets	71,012		74,917
Total current assets	415,714		389,702
Property, plant and equipment	9,528,396		9,365,051
Less: accumulated depreciation	(1,617,527)		(1,480,720)
Net property, plant and equipment	7,910,869		7,884,331
Investments in unconsolidated entities (a)	1,090,202		819,743
Goodwill	486,698		486,698
Net intangible assets	554,543		586,952
Other assets	268,987		278,159
Total assets	$	10,727,013	$	10,445,585
LIABILITIES, MEZZANINE EQUITY AND SHAREHOLDERS' EQUITY
Current liabilities:
Current portion of long-term debt	$	—	$	98,830
Accounts payable	49,496		60,528
Capital contributions payable to the MVP Joint Venture	209,779		34,355
Accrued interest	133,376		135,762
Accrued liabilities	69,208		83,835
Total current liabilities	461,859		413,310
Long-term liabilities:
Revolving credit facility borrowings	570,000		535,000
Long-term debt	6,340,880		6,335,320
Contract liability	1,129,599		968,535
Regulatory and other long-term liabilities	124,875		112,974
Total liabilities	8,627,213		8,365,139
Mezzanine equity:
Equitrans Midstream Preferred Shares, 30,018 shares issued and outstanding as of June 30, 2023 and December 31, 2022	681,842		681,842
Shareholders' equity:
Common stock, no par value, 433,261 and 432,781 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	4,001,030		3,974,127
Retained deficit	(3,047,267)		(3,053,590)
Accumulated other comprehensive loss	(1,288)		(1,332)
Total common shareholders' equity	952,475		919,205
Noncontrolling interest	465,483		479,399
Total shareholders' equity	1,417,958		1,398,604
Total liabilities, mezzanine equity and shareholders' equity	$	10,727,013	$	10,445,585

(a)Represents investment in the MVP Joint Venture. See Note 4.

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

7

EQUITRANS MIDSTREAM CORPORATION

Statements of Consolidated Shareholders' Equity and Mezzanine Equity (Unaudited)

												Mezzanine
												Equity
						Accumulated						Equitrans
	Common Stock					Other						Midstream
	Shares	No		Retained		Comprehensive		Noncontrolling		Total		Preferred
	Outstanding	Par Value (a)		Deficit (a)		Loss		Interest		Equity (a)		Shares
	(Thousands, except per share amounts)
Balance at January 1, 2022	432,522	$	3,955,918	$	(2,464,573)	$	(2,054)	$	483,195	$	1,972,486	$	681,842
Other comprehensive income (net of tax):
Net income	—	—		80,490		—		3,775		84,265		14,628
Pension and other post-retirement benefits liability adjustment, net of tax expense of $12	—	—		—		34		—		34		—
Dividends on common shares ($0.15 per share)	—	—		(65,584)		—		—		(65,584)		—
Share-based compensation plans, net	155	4,670		—		—		—		4,670		—
Dividends paid to holders of Equitrans Midstream Preferred Shares ($0.4873 per share)	—	—		—		—		—		—		(14,628)
Balance at March 31, 2022	432,677	$	3,960,588	$	(2,449,667)	$	(2,020)	$	486,970	$	1,995,871	$	681,842
Other comprehensive income (net of tax):
Net income	—	—		46,163		—		3,948		50,111		14,628
Pension and other post-retirement benefits liability adjustment, net of tax expense of $12	—	—		—		34		—		34		—
Dividends on common shares ($0.15 per share)	—	—		(64,991)		—		—		(64,991)		—
Share-based compensation plans, net	104	4,470		—		—		—		4,470		—
Dividends paid to holders of Equitrans Midstream Preferred Shares ($0.4873 per share)	—	—		—		—		—		—		(14,628)
Balance at June 30, 2022	432,781	$	3,965,058	$	(2,468,495)	$	(1,986)	$	490,918	$	1,985,495	$	681,842

(a)Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

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												Mezzanine
												Equity
						Accumulated						Equitrans
	Common Stock					Other						Midstream
	Shares	No		Retained		Comprehensive		Noncontrolling		Total		Preferred
	Outstanding	Par Value		Deficit		Loss		Interest		Equity		Shares
	(Thousands, except per share amounts)
Balance at January 1, 2023	432,781	$	3,974,127	$	(3,053,590)	$	(1,332)	$	479,399	$	1,398,604	$	681,842
Other comprehensive income (net of tax):
Net income	—	—		87,054		—		4,409		91,463		14,628
Pension and other post-retirement benefits liability adjustment, net of tax expense of $7	—	—		—		22		—		22		—
Dividends on common shares ($0.15 per share)	—	—		(65,121)		—		—		(65,121)		—
Share-based compensation plans, net	402	3,050		—		—		—		3,050		—
Distributions paid to noncontrolling interest in Eureka Midstream Holdings, LLC	—	—		—		—		(8,000)		(8,000)		—
Dividends paid to holders of Equitrans Midstream Preferred Shares ($0.4873 per share)	—	—		—		—		—		—		(14,628)
Balance at March 31, 2023	433,183	$	3,977,177	$	(3,031,657)	$	(1,310)	$	475,808	$	1,420,018	$	681,842
Other comprehensive income (net of tax):
Net income	—	—		52,617		—		1,675		54,292		14,628
Pension and other post-retirement benefits liability adjustment, net of tax expense of $7	—	—		—		22		—		22		—
Dividends on common shares ($0.15 per share)	—	—		(68,227)		—		—		(68,227)		—
Share-based compensation plans, net	78	23,853		—		—		—		23,853		—
Distributions paid to noncontrolling interest in Eureka Midstream Holdings, LLC	—	—		—		—		(12,000)		(12,000)		—
Dividends paid to holders of Equitrans Midstream Preferred Shares ($0.4873 per share)	—	—		—		—		—		—		(14,628)
Balance at June 30, 2023	433,261	$	4,001,030	$	(3,047,267)	$	(1,288)	$	465,483	$	1,417,958	$	681,842

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

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EQUITRANS MIDSTREAM CORPORATION

Notes to Consolidated Financial Statements (Unaudited)

1.    Financial Statements

Nature of Business. The Company's operating subsidiaries provide midstream services to the Company's customers in Pennsylvania, West Virginia and Ohio through three primary assets: the gathering system, which includes predominantly dry gas gathering systems of high-pressure gathering lines; the transmission system, which includes FERC-regulated interstate pipelines and storage systems; and the water network, which primarily consists of water pipelines and other facilities that support well completion activities and produced water handling activities.

Basis of Presentation. References in these financial statements to Equitrans Midstream or the Company refer collectively to Equitrans Midstream Corporation and its consolidated subsidiaries for all periods presented, unless otherwise indicated.

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (GAAP) for interim financial information and with the requirements of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these unaudited consolidated financial statements include all adjustments (consisting of only normal, recurring adjustments, unless otherwise disclosed in this Quarterly Report on Form 10-Q) necessary for a fair presentation of the financial position of the Company as of June 30, 2023, the results of its operations and equity for the three and six months ended June 30, 2023 and 2022 and its cash flows for the six months ended June 30, 2023 and 2022. The consolidated balance sheet at December 31, 2022 has been derived from the audited financial statements at that date, but does not include all of the information and notes required by GAAP for complete financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2022, which includes all disclosures required by GAAP.

Due to, among other things, the seasonal nature of the Company's utility customer contracts, as well as producers’ well completion activities and varying needs for fresh and produced water (which are primarily driven by horizontal lateral lengths and the number of completion stages per well), the interim statements for the three and six months ended June 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023.

For further information, refer to the Company's consolidated financial statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2022, as well as Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" contained herein.

Revisions of Previously Issued Financial Statements.

In the course of its 2022 year-end process, the Company identified certain corrections in its previously issued unaudited interim consolidated financial statements primarily related to the accounting for the Henry Hub cash bonus payment provision (as defined in Note 7). In accordance with Staff Accounting Bulletin (SAB) No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, the Company evaluated the corrections and, based on its analysis of quantitative and qualitative factors, determined that the related impact was not material to the Company's affected unaudited interim consolidated financial statements presented within this Quarterly Report on Form 10-Q. The Company has made the appropriate revisions to its previously issued interim consolidated financial statements in order to correct the Henry Hub cash bonus payment provision, and also made other immaterial revisions to its six months ended June 30, 2022 unaudited interim consolidated financial statements. For more information, see Notes 1 and 16 to the consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Recently Issued Accounting Standards.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides practical expedients for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. This guidance is applicable to the calculation of each dividend following March 31, 2024 for the Equitrans Midstream Preferred Shares pursuant to the Company's Second Amended and Restated Articles of Incorporation, as well as any Company contracts that use the London Inter-Bank Offered Rate as a reference rate. In December 2022, the FASB also issued ASU 2022-06, which amended Topic 848 to defer the sunset date to apply the practical expedients until December 31, 2024. The Company adopted this standard on April 1, 2023 and it had no impact on the Company's financial statements and related disclosures.

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2.    Financial Information by Business Segment

The Company reports its operations in three segments that reflect its three lines of business of Gathering, Transmission and Water, which reflects the manner in which management evaluates the business for making operating decisions and assessing performance.

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(Thousands)
Revenues from customers:
Gathering	$	210,194	$	225,314	$	420,946	$	445,104
Transmission	92,540		91,078		231,446		201,873
Water	15,735		12,219		42,414		23,780
Total operating revenues	$	318,469	$	328,611	$	694,806	$	670,757
Operating income (loss):
Gathering	$	81,020	$	119,564	$	185,314	$	233,416
Transmission	48,451		60,841		147,373		145,403
Water	530		3,120		12,903		1,195
Headquarters (a)	(467)		(227)		(812)		(616)
Total operating income	$	129,534	$	183,298	$	344,778	$	379,398
Reconciliation of operating income to net income:
Equity income (b)	$	23,686	$	39	$	23,808	$	43
Other income, net (c)	19,809		4,148		11,707		5,659
Loss on extinguishment of debt	—		(24,937)		—		(24,937)
Net interest expense	(103,644)		(95,117)		(208,601)		(188,238)
Income tax expense (benefit)	465		2,692		(3,319)		8,293
Net income	$	68,920	$	64,739	$	175,011	$	163,632

(a)Includes certain unallocated corporate expenses.

(b)Equity income is included in the Transmission segment.

(c)Includes unrealized gains on derivative instruments recorded in the Gathering segment.

	June 30, 2023		December 31, 2022
	(Thousands)
Segment assets:
Gathering	$	7,597,998	$	7,610,233
Transmission (a)	2,590,514		2,333,896
Water	214,005		218,680
Total operating segments	10,402,517		10,162,809
Headquarters, including cash	324,496		282,776
Total assets	$	10,727,013	$	10,445,585

(a)The equity method investment in the MVP Joint Venture is included in the Transmission segment.

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	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(Thousands)
Depreciation:
Gathering	$	49,387	$	48,573	$	98,736	$	96,828
Transmission	13,904		13,904		27,792		27,798
Water	6,511		4,804		12,374		9,321
Headquarters	229		376		533		753
Total	$	70,031	$	67,657	$	139,435	$	134,700
Capital expenditures:
Gathering (a)	$	71,893	$	69,189	$	131,606	$	122,336
Transmission (b)	14,375		6,339		23,564		10,565
Water	11,148		22,526		22,224		32,091
Headquarters	—		1		—		13
Total (c)	$	97,416	$	98,055	$	177,394	$	165,005

(a)Includes capital expenditures related to the noncontrolling interest in Eureka Midstream Holdings, LLC (Eureka Midstream) of approximately $5.0 million and $8.2 million for the three and six months ended June 30, 2023, respectively, and approximately $8.7 million and $11.7 million for the three and six months ended June 30, 2022, respectively.

(b)Transmission capital expenditures do not include aggregate capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of approximately $36.0 million and $70.5 million for the three and six months ended June 30, 2023, respectively, and approximately $39.2 million and $111.8 million for the three and six months ended June 30, 2022, respectively.

(c)The Company accrues capital expenditures when the work has been completed but the associated bills have not yet been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. The net impact of non-cash capital expenditures, including the effect of accrued capital expenditures, transfers to/from inventory as assets are completed/assigned to a project and capitalized share-based compensation costs were $(1.1) million and $(5.5) million for the three and six months ended June 30, 2023, respectively, and $(6.2) million and $(1.9) million for the three and six months ended June 30, 2022, respectively.

3.    Revenue from Contracts with Customers

For the three and six months ended June 30, 2023 and 2022, substantially all revenues recognized on the Company's statements of consolidated comprehensive income were from contracts with customers. As of June 30, 2023 and December 31, 2022, all receivables recorded on the Company's consolidated balance sheets represented performance obligations that have been satisfied and for which an unconditional right to consideration exists.

Summary of disaggregated revenues. The tables below provide disaggregated revenue information by business segment.

	Three Months Ended June 30, 2023
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	141,737	$	82,247	$	9,389	$	233,373
Volumetric-based fee revenues	68,457		10,293		6,346		85,096
Total operating revenues	$	210,194	$	92,540	$	15,735	$	318,469
	Three Months Ended June 30, 2022
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	138,605	$	84,675	$	9,375	$	232,655
Volumetric-based fee revenues	86,709		6,403		2,844		95,956
Total operating revenues	$	225,314	$	91,078	$	12,219	$	328,611

	Six Months Ended June 30, 2023
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	281,808	$	183,969	$	18,764	$	484,541
Volumetric-based fee revenues (b)	139,138		47,477		23,650		210,265
Total operating revenues	$	420,946	$	231,446	$	42,414	$	694,806
	Six Months Ended June 30, 2022
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	271,202	$	187,545	$	15,127	$	473,874
Volumetric-based fee revenues	173,902		14,328		8,653		196,883
Total operating revenues	$	445,104	$	201,873	$	23,780	$	670,757

(a) Firm reservation fee revenues associated with Gathering included MVC unbilled revenues of approximately $2.4 million and $5.7 million for the three and six months ended June 30, 2023, respectively, and $6.2 million and $8.9 million for the three and six months ended June 30, 2022, respectively.

(b) For the six months ended June 30, 2023, volumetric-based fee revenues associated with Gathering and Transmission included one-time contract buyouts by a customer for approximately $5.0 million and $23.8 million, respectively.

Contract assets. The Company's contract assets related to the Company's future MVC deficiency payments are generally expected to be collected within the next twelve months and are primarily included in other current assets in the Company's consolidated balance sheets until such time as the MVC deficiency payments are invoiced to the customer.

The following table presents changes in the Company's unbilled revenue balance:

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Balance as of beginning of period	$	27,493	$	16,772
Revenue recognized in excess of amounts invoiced (a)	5,680		10,940
Minimum volume commitments invoiced (b)	(23,558)		(14,884)
Amortization (c)	(329)		(220)
Balance as of end of period	$	9,286	$	12,608

(a)Primarily includes revenues associated with MVCs that are generally included in firm reservation fee revenues within the Gathering and Water segments.

(b)Unbilled revenues are transferred to accounts receivable once the Company has an unconditional right to consideration from the customer.

(c)Amortization of capitalized contract costs paid to customers over the expected life of the agreement.

Contract liabilities. The Company's contract liabilities consist of deferred revenue primarily associated with the EQT Global GGA. Contract liabilities are classified as current or non-current according to when such amounts are expected to be recognized.

The following table presents changes in the Company's contract liability balances:

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Balance as of beginning of period	$	973,087	$	822,416
Amounts recorded during the period (a)	165,011		176,743
Change in estimated variable consideration (b)	(3,392)		—
Amounts transferred during the period (c)	(3,835)		(537)
Balance as of end of period	$	1,130,871	$	998,622

(a)Includes deferred billed revenue during the six months ended June 30, 2023 and 2022 primarily associated with the EQT Global GGA.

(b)Change in estimated variable consideration represents the decrease in total deferred revenue due to changes in assumptions.

(c)Deferred revenues are recognized as revenue upon satisfaction of the Company's performance obligation to the customer.

Summary of remaining performance obligations. The following table summarizes the estimated transaction price allocated to the Company's remaining performance obligations under all contracts with firm reservation fees, MVCs and/or ARCs as of June 30, 2023 that the Company will invoice or transfer from contract liabilities and recognize in future periods.

		2023(a)		2024		2025		2026		2027		Thereafter		Total
	(Thousands)
Gathering firm reservation fees		$	48,677	$	172,708	$	176,307	$	166,930	$	160,370	$	1,707,106	$	2,432,098
Gathering revenues supported by MVCs		230,638		440,716		464,165		496,478		488,261		3,172,196		5,292,454
Transmission firm reservation fees		176,820		400,788		392,544		391,489		392,679		3,139,671		4,893,991
Water revenues supported by ARCs		22,755		45,706		48,441		45,159		44,065		166,644		372,770
Total (b)		$	478,890	$	1,059,918	$	1,081,457	$	1,100,056	$	1,085,375	$	8,185,617	$	12,991,313

(a)    July 1, 2023 through December 31, 2023.

(b)    Includes assumptions regarding timing for placing certain projects in-service. Such assumptions may not be realized and delays in the in-service dates for projects have substantially altered, and additional delays may further substantially alter, the remaining performance obligations for certain contracts with firm reservation fees, MVCs and/or ARCs. The MVP Joint Venture is accounted for as an equity method investment and those amounts are not included in the table above.

Based on total projected contractual revenues, including projected contractual revenues from future capacity expected from expansion projects that are not yet fully constructed or not yet fully in-service for which the Company has executed firm contracts, the Company's firm gathering contracts and firm transmission and storage contracts had weighted average remaining terms of approximately 13 years and 12 years, respectively, as of June 30, 2023.

4.    Investment in Unconsolidated Entity

The MVP Joint Venture is constructing the Mountain Valley Pipeline (MVP), an estimated 300-mile natural gas interstate pipeline that is designed to span from northern West Virginia to southern Virginia. The Company will operate the MVP and owned a 47.3% interest in the MVP project as of June 30, 2023. On November 4, 2019, Consolidated Edison, Inc. (Con Edison) exercised an option to cap its investment in the construction of the MVP project at approximately $530 million (excluding AFUDC). On May 4, 2023, RGC Resources, Inc. (RGC) also exercised an option for the Company to fund RGC's portion of future capital contributions with respect to the MVP project, which funding the Company commenced in June 2023 and will continue through the full in-service date of the MVP. The Company and NextEra Energy, Inc. (NEE) are obligated to, and RGC prior to the exercise of its option described above had opted to, fund the shortfall in Con Edison's capital contributions, on a pro rata basis. Following RGC's exercise of its option, the Company is also funding RGC's portion of Con Edison's shortfall. Such funding by the Company in respect of the Con Edison shortfall and RGC's portion of capital contributions has and will correspondingly increase the Company's interests in the MVP project and decrease Con Edison's and RGC's respective interests,

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as applicable, in the MVP project. If the MVP project were to be completed in 2023 at a total project cost of approximately $6.6 billion (excluding AFUDC), the Company's equity ownership in the MVP project would progressively increase from approximately 47.3% to approximately 48.3%. The MVP Joint Venture is a variable interest entity because it has insufficient equity to finance its activities during the construction stage of the project. The Company is not the primary beneficiary of the MVP Joint Venture because the Company does not have the power to direct the activities that most significantly affect the MVP Joint Venture's economic performance. Certain business decisions, such as decisions to make distributions of cash, require a greater than 66 2/3% ownership interest approval, and no one member owns more than a 66 2/3% interest.

In April 2018, the MVP Joint Venture announced the MVP Southgate project, which is a contemplated interstate pipeline that was approved by the FERC to extend approximately 75-miles from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The Company is expected to operate the MVP Southgate pipeline and owned a 47.2% interest in the MVP Southgate project as of June 30, 2023. The MVP Joint Venture continues to evaluate the MVP Southgate project and is focused on its active negotiations with the project shipper, Dominion Energy North Carolina, and a prospective customer regarding refining the MVP Southgate project’s design, scope and/or timing for the benefit of such customers in lieu of pursuing the project as originally contemplated. Dominion Energy North Carolina’s obligations under the precedent agreement in support of the original project are subject to certain conditions, including, among others, that the MVP Joint Venture will have completed construction of the project facilities by December 31, 2023. The Company is unable to ensure the results of the negotiations between the MVP Joint Venture and Dominion Energy North Carolina and a prospective customer, including the ultimate design, scope, timing, undertaking or completion of the project.

The Company reviews the carrying value of its investments in unconsolidated entities for impairment whenever events or changes in circumstances indicate that the fair value may have declined in value. There is risk that the Company's equity method investment in the MVP Joint Venture may be further impaired in the future due to ongoing (and potentially future) legal and regulatory matters, as well as potential macroeconomic factors, including other than temporary market fluctuations, changes in interest rates, cost increases and other unanticipated events. While macroeconomic factors in and of themselves may not be a direct indicator of impairment, should an impairment indicator be identified in the future, macroeconomic factors such as changes in interest rates could ultimately impact the size and scope of any potential impairment.

In June 2023, the MVP Joint Venture issued a capital call notice for the funding of the MVP project to MVP Holdco, LLC (MVP Holdco), a wholly owned subsidiary of the Company, for $209.6 million, of which $15.5 million and $55.3 million were paid in July 2023 and August 2023, respectively, with the remaining $138.8 million expected to be paid in September 2023.

Pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances in respect of the MVP project, which may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral, in favor of the MVP Joint Venture to provide assurance as to the funding of MVP Holdco's proportionate share of the construction budget for the MVP project.

In addition, pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances in respect of MVP Southgate, which performance assurances may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral.

As of June 30, 2023, the letter of credit with respect to the MVP project was in the amount of approximately $219.7 million. On April 6, 2023, EQM’s $14.2 million letter of credit with respect to the MVP Southgate project was terminated, following the determination to temporarily defer partners’ obligations to post performance assurances with respect to the MVP Southgate project, which may be reinstated upon further developments. Upon the FERC’s initial release to begin construction of the MVP Southgate project, the Company will be obligated to deliver an allowable form of performance assurance in an amount equal to 33% of MVP Holdco’s proportionate share of the remaining capital obligations under the applicable construction budget.

On June 3, 2023, the President of the United States signed into law the Fiscal Responsibility Act of 2023 that, among other things, ratified and approved all permits and authorizations necessary for the construction and initial operation of the MVP, directed the applicable federal officials and agencies to maintain such authorizations, required the Secretary of the Army to issue not later than June 24, 2023 all permits or verifications necessary to complete construction of the MVP and allow for the MVP’s operation and maintenance, and divested courts of jurisdiction to review agency actions on approvals necessary for MVP construction and initial operation. Following enactment of the Fiscal Responsibility Act of 2023, the Fourth Circuit issued a stay halting MVP project construction in the Jefferson National Forest and a stay of the new Biological Opinion and Incidental Take Statement for the MVP project effectively halting forward construction for the entirety of the project, on July 10, 2023 and July 11, 2023, respectively. The MVP Joint Venture subsequently filed an emergency application to vacate the

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stays with the U.S. Supreme Court and the U.S. Supreme Court vacated the stays on July 27, 2023. Accordingly, the MVP Joint Venture recommenced forward construction.

5.     Share-based Compensation Plans

In December 2021, at the recommendation of the Human Capital and Compensation Committee (the Compensation Committee) and approval of the Company’s Board of Directors (the Board), the Company granted a special, one-time, performance award program designed to reward all employees should the Company’s most complex and strategically significant project, the MVP project, be placed in-service (the MVP PSU Program). The Company granted 1,450,110 shares to all participants in the 2018 Long-Term Incentive Plan, as amended, as of November 1, 2021 (LTIP Participants), except the Company’s named executive officers (NEOs) and certain other senior leaders (collectively, the Senior Executives), and 1,158,030 shares to the Senior Executives. The MVP PSU Program awards were granted on December 6, 2021 and will be paid in Company common stock, contingent on the MVP Joint Venture being authorized by the FERC to commence service on the MVP (such authorization, the In-Service Date) on or before a specified expiration date of January 1, 2024 (the Expiration Date, the continued applicability of which is discussed below), subject to continued service through the applicable payment date:

•As to shares issued to the LTIP Participants, 100% will be paid on the date selected by the Company that is not later than 90 days after the In-Service Date;

•As to shares issued to the Senior Executives:

•50% will be paid on the date selected by the Company that is not later than 90 days after the In-Service Date;

•25% will be paid on the date selected by the Company that is not later than 30 days after the first anniversary of the In-Service Date; and

•25% will be paid on the date selected by the Company that is not later than 30 days after the second anniversary of the In-Service Date.

Dividends are eligible to be paid in cash upon vesting on each share of common stock as dividends are declared on the Company's common stock during the vesting period.

As of June 30, 2023, the achievement of the MVP Joint Venture being authorized by the FERC to commence service on the MVP on or before the Expiration Date represented a performance condition as defined by ASC 718, Share-based Compensation, that should be assessed at the end of each reporting period as to whether the performance condition is probable of being achieved. Due to the graded vesting of the MVP PSU Program awards to the Senior Executives, the Company recognizes compensation cost over the requisite service period for each separately vested tranche of the award as though each award was, in substance, its own award. During the three months ended June 30, 2023, the performance condition associated with the MVP PSU Program awards was deemed to be probable, and therefore, the Company recognized compensation cost of approximately $16.8 million that includes the cumulative catch-up of approximately $14.1 million to reflect the requisite service period of each award that has been provided to date. As of June 30, 2023, there was approximately $7.5 million of unrecognized compensation cost related to non-vested MVP PSU Program awards that is expected to be recognized over a remaining weighted average vesting term of approximately 0.8 years.

The following table provides detailed information on the MVP PSU Program as of June 30, 2023:

MVP PSU Program	Non-vested Shares	Grant Date Fair Value (a)	Fair Value (Thousands)		Requisite Service Period	Unrecognized Compensation Cost (Thousands)
LTIP Participants	1,370,803	$9.59	$	13,146	25 months	$	3,109
Senior Executives T1	579,015	$9.59	5,553		25 months	1,333
Senior Executives T2	289,511	$9.59	2,776		37 months	1,351
Senior Executives T3	289,504	$9.59	2,776		49 months	1,700

(a)    Determined based upon the closing price of the Company's common stock on the day before the grant date.

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As discussed further in Note 4, as well as in “Outlook” and Part II, “Item 1. Legal Proceedings” of this Quarterly Report on Form 10-Q, MVP forward construction had been halted by the Fourth Circuit implementing stays of project authorizations in July 2023. Construction resumed following the U.S. Supreme Court vacating the Fourth Circuit's stays on July 27, 2023.

In connection with considering the Company’s ongoing efforts to complete the MVP project, the Board has taken note of the significant legal and regulatory obstacles that have delayed progress on the MVP project that were outside of the control of the Company, particularly since the inception of the MVP PSU Program, the efforts undertaken by many of the Company’s employees, including the NEOs, to overcome these obstacles, and ongoing risks. The Board also is focused on and seeks to promote the Company's top priority of completing the MVP project safely and in compliance with applicable environmental standards. Taking into account these factors, the proximity of the Expiration Date, and noting the potential that the Expiration Date could distract from, or be cited by project opponents as a distraction from, a focus on safety and environmental compliance, the Board, on July 26, 2023, with the recommendation of the Compensation Committee, approved an amendment to the MVP PSU Program to eliminate the Expiration Date as a term of the MVP PSU Program and all award agreements thereunder (the Amendment).

Accordingly, the Equitrans Midstream Corporation Senior Executive 2021 MVP Performance Share Units Award Agreements to which the NEOs are parties and the Equitrans Midstream Corporation LTIP Participant 2021 MVP Performance Share Units Award Agreements have been amended to reflect the elimination of the Expiration Date, and the calculation of shares retained in the event of a participant’s termination due to death, disability or retirement also has been clarified. All other terms of the award agreements remain in full force and effect.

6.    Debt

Amended EQM Credit Facility. As of June 30, 2023, the Company had aggregate commitments available under the Amended EQM Credit Facility of approximately $2.16 billion before October 31, 2023 (the Earlier Maturity Date), with approximately $1.55 billion in aggregate commitments available on and after the Earlier Maturity Date and prior to April 30, 2025 (the Later Maturity Date). As of June 30, 2023, EQM had approximately $255 million of borrowings and $220.7 million of letters of credit outstanding under the Amended EQM Credit Facility. As of June 30, 2023, pursuant to the terms of the Amended EQM Credit Facility, EQM had the ability to borrow approximately $0.6 billion under the Amended EQM Credit Facility. The amount EQM is able to borrow under the Amended EQM Credit Facility is bounded by a maximum consolidated leverage ratio. As of December 31, 2022, EQM had approximately $240 million of borrowings and $234.9 million of letters of credit outstanding under the Amended EQM Credit Facility.

During the three and six months ended June 30, 2023, the maximum outstanding borrowings at any time were approximately $255 million and $315 million, respectively, and the average daily balances were approximately $191 million and $225 million, respectively. EQM incurred interest at weighted average annual interest rates of approximately 7.9% and 7.7% for the three and six months ended June 30, 2023, respectively. For the three and six months ended June 30, 2023, commitment fees of $2.3 million and $4.4 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility. During the three and six months ended June 30, 2022, the maximum outstanding borrowings at any time were approximately $180 million and $280 million, respectively, and the average daily balances were approximately $126 million and $193 million, respectively. EQM incurred interest at weighted average annual interest rates of approximately 3.5% and 3.0% for the three and six months ended June 30, 2022, respectively. For the three and six months ended June 30, 2022, commitment fees of $2.0 million and $3.8 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility. As of June 30, 2023, no term loans were outstanding under the Amended EQM Credit Facility.

Eureka Credit Facility. On May 13, 2021, Eureka Midstream, LLC (Eureka) entered into a $400 million senior secured revolving credit facility with Sumitomo Mitsui Banking Corporation, as administrative agent, the lenders party thereto from time to time and any other persons party thereto from time to time (the 2021 Eureka Credit Facility). On March 29, 2023, Eureka entered into an amendment (the Eureka Amendment) to the 2021 Eureka Credit Facility. The Eureka Amendment replaced the London Interbank Offered Rate with the Secured Overnight Financing Rate as the benchmark rate for borrowings, including a credit spread adjustment of 0.10% for all applicable interest periods, as well as for daily swing line borrowings. Any reference to the 2021 Eureka Credit Facility as of any particular date shall mean the 2021 Eureka Credit Facility as in effect on such date.

As of June 30, 2023, and December 31, 2022, Eureka had approximately $315 million and $295 million, respectively, of borrowings outstanding under the 2021 Eureka Credit Facility. For the three and six months ended June 30, 2023, the maximum amount of outstanding borrowings under the 2021 Eureka Credit Facility at any time were approximately $315 million, the average daily balances were approximately $309 million and $303 million, respectively, and Eureka incurred interest at weighted average annual interest rates of approximately 7.7% and 7.4%, respectively. For the three and six months ended June 30, 2023, commitment fees of $0.1 million and $0.2 million, respectively, were paid to maintain credit availability under

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the 2021 Eureka Credit Facility. For the three and six months ended June 30, 2022, the maximum amount of outstanding borrowings under the 2021 Eureka Credit Facility at any time were approximately $268 million and $280 million, respectively, the average daily balances were approximately $262 million and $269 million, respectively, and Eureka incurred interest at weighted average annual interest rates of approximately 3.5% and 3.2%, respectively. For the three and six months ended June 30, 2022, commitment fees of $0.2 million and $0.3 million, respectively, were paid to maintain credit availability under the 2021 Eureka Credit Facility.

2023 Senior Notes Redemption. On June 21, 2023 (the Redemption Date), EQM redeemed in full its remaining outstanding 4.75% Senior Notes due 2023 (the 2023 Notes) in the aggregate principal amount of $98.9 million, pursuant the Indenture, dated as of August 1, 2014, by and between EQM, the subsidiary guarantors party thereto and The Bank of New York Mellon Trust Company, N.A. (BNYMTC), as trustee, as supplemented by that certain Third Supplemental Indenture, dated as of June 25, 2018, by and between the EQM and BNYMTC, at a redemption price equal to 100% of the principal amount of the 2023 Notes, plus accrued and unpaid interest to, but not including, the Redemption Date. Upon the redemption by EQM of the 2023 Notes, the Third Supplemental Indenture was discharged and ceased to be of further effect except as to rights thereunder. EQM utilized cash on hand to effect payment of the redemption on the Redemption Date.

2022 Senior Notes. On June 7, 2022, EQM completed a private offering of $500 million aggregate principal amount of new 7.50% senior notes due 2027 (the 2027 Notes) and $500 million aggregate principal amount of new 7.50% senior notes due 2030 (the 2030 Notes and, together with the 2027 Notes, the 2022 Senior Notes) and received net proceeds from the offering of approximately $984.5 million inclusive of a discount of approximately $12.5 million and debt issuance costs of approximately $3.0 million.

EQM used the net proceeds from the offering of the 2022 Senior Notes and cash on hand to purchase (i) an aggregate principal amount of approximately $501.1 million of its then outstanding 2023 Notes pursuant to a tender offer for any and all of the outstanding 2023 Notes (the Any and All Tender Offer) and an open market purchase following the expiration of the Any and All Tender Offer, and (ii) an aggregate principal amount of $300 million of its outstanding 6.00% notes due 2025 (2025 Notes), and an aggregate principal amount of $200 million of its outstanding 4.00% notes due 2024 (2024 Notes), pursuant to tender offers (the Maximum Tender Offers, together with the Any and All Tender Offer, the 2022 Tender Offers) for the 2025 Notes and 2024 Notes, which such Maximum Tender Offers reflected a maximum aggregate principal amount of 2025 Notes and 2024 Notes to be purchased of $500 million (such amount, the Aggregate Maximum Principal Amount).

2022 Tender Offers. On June 6, 2022, the Any and All Tender Offer expired and, on June 7, 2022 and June 9, 2022, EQM purchased an aggregate principal amount of approximately $496.8 million of 2023 Notes at an aggregate cost of approximately $506.7 million pursuant to the Any and All Tender Offer. On June 10, 2022, which was after the closing of the Any and All Tender Offer, EQM also repurchased an aggregate principal amount of approximately $4.3 million of 2023 Notes in the open market at an aggregate cost of approximately $4.4 million. On June 13, 2022, which was the early tender deadline for the Maximum Tender Offers, the Aggregate Maximum Principal Amount was fully subscribed by the 2024 Notes and 2025 Notes then tendered, and, on June 14, 2022, EQM purchased an aggregate principal amount of $200 million of 2024 Notes and $300 million of 2025 Notes at an aggregate cost of approximately $509 million (inclusive of the applicable early tender premium for the 2024 Notes and 2025 Notes described in that certain Offer to Purchase of EQM dated May 31, 2022, as amended).

During the three and six months ended June 30, 2022, the Company incurred a loss on extinguishment of debt of approximately $24.9 million related to the payment of the 2022 Tender Offers and open market repurchase premiums and fees, and write off of the respective unamortized discounts and financing costs associated with the purchase of portions of 2023, 2024 and 2025 Notes in the 2022 Tender Offers. This amount is included in the loss on extinguishment of debt line on the statements of consolidated comprehensive income.

As of June 30, 2023, EQM and Eureka were in compliance with all debt provisions and covenants.

7.    Fair Value Measurements

Assets Measured at Fair Value on a Recurring Basis. The Company records derivative instruments at fair value on a gross basis in its consolidated balance sheets. The EQT Global GGA provides for potential cash bonus payments payable by EQT to the Company during the period beginning on the first day of the calendar quarter in which the MVP full in-service date occurs through the calendar quarter ending December 31, 2024 (the Henry Hub cash bonus payment provision). The potential cash bonus payments are conditioned upon the quarterly average of certain Henry Hub natural gas prices exceeding certain price thresholds. The Henry Hub cash bonus payment provision is accounted for as a derivative instrument and recorded at its estimated fair value using a Monte Carlo simulation model. Significant inputs used in the fair value measurement include NYMEX Henry Hub natural gas futures prices as of the date of valuation, probability-weighted assumptions regarding MVP

16

project completion, risk-free interest rates based on U.S. Treasury rates, expected volatility of NYMEX Henry Hub natural gas futures prices and an estimated credit spread of EQT. The probability-weighted assumptions regarding MVP project completion utilizing internally developed methodologies, and the expected volatility of NYMEX Henry Hub natural gas futures prices used in the valuation methodology represent significant unobservable inputs causing the Henry Hub cash bonus payment provision to be designated as a Level 3 fair value measurement. An expected average volatility of approximately 56.0% was utilized in the valuation model, which is based on market-quoted volatilities of relevant NYMEX Henry Hub natural gas forward prices.

As of June 30, 2023 the fair value of the Henry Hub cash bonus payment provision was $33.9 million, of which $29.5 million was recorded in other current assets and $4.4 million was recorded in other assets on the Company's consolidated balance sheets. As of December 31, 2022, the fair value of the Henry Hub cash bonus payment provision was $23.0 million which was recorded in other assets on the Company's consolidated balance sheets. During the three and six months ended June 30, 2023, the Company recognized gains of $19.4 million and $10.9 million, respectively, and during the three and six months ended June 30, 2022, the Company recognized gains of $3.7 million and $5.3 million, respectively, representing the change in estimated fair value of the derivative instrument during the respective periods and are recorded in other income, net in the Company's statements of consolidated comprehensive income.

Other Financial Instruments. The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximate fair value due to the short maturity of the instruments. The carrying values of borrowings under the Amended EQM Credit Facility and the 2021 Eureka Credit Facility approximate fair value as the interest rates are based on prevailing market rates. As EQM's borrowings under its senior notes are not actively traded, their fair values are estimated using an income approach model that applies a discount rate based on prevailing market rates for debt with similar remaining time-to-maturity and credit risk; as such, their fair values are Level 2 fair value measurements. The fair value of the Preferred Interest is a Level 3 fair value measurement and is estimated using an income approach model that applies a market-based discount rate. As of June 30, 2023, and December 31, 2022, the estimated fair values of the Preferred Interest were approximately $92.5 million and $95.2 million, respectively, and the carrying values of the Preferred Interest were approximately $91.4 million and $94.3 million, respectively.

8.    Earnings Per Share

The Company excluded 31,125 and 32,506 (in thousands) of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards from the computation of diluted weighted average common shares outstanding for the three and six months ended June 30, 2023, respectively. The Company excluded 30,113 and 30,125 (in thousands) of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards from the computation of diluted weighted average common shares outstanding for the three and six months ended June 30, 2022, respectively.

The Company grants Equitrans Midstream phantom units to non-employee directors that will be paid in Equitrans Midstream common stock upon the director's termination of service from the Company's Board of Directors. As there are no remaining service, performance or market conditions related to these awards, 745 and 674 (in thousands) Equitrans Midstream phantom units were included in the computation of basic and diluted weighted average common shares outstanding for the three and six months ended June 30, 2023, respectively, and 588 and 615 (in thousands) Equitrans Midstream phantom units were included in the computation of basic and diluted weighted average common shares outstanding for the three and six months ended June 30, 2022, respectively.

9.     Income Taxes

The Company's effective tax rate was 0.7% for the three months ended June 30, 2023 compared to 4.0% for the three months ended June 30, 2022. The Company's effective tax rate was (1.9)% for the six months ended June 30, 2023 compared to 4.8% for the six months ended June 30, 2022. The Company calculates the provision for income taxes for interim periods by applying an estimate of the annual effective tax rate for the full fiscal year to "ordinary" income or loss (income (loss) before income taxes excluding unusual or infrequently occurring items) for the periods. The effective tax rate was lower for the three and six months ended June 30, 2023 compared to the three and six months ended June 30, 2022 and lower compared to the statutory rate for the three and six months ended June 30, 2023 primarily due to the impact of projected AFUDC – equity on the MVP project and the impact of changes in the valuation allowance that limit tax benefits for the Company’s federal and state deferred tax assets, partially offset by state tax expense related to uncertain tax benefits. The effective tax rate for the three and six months ended June 30, 2022 was lower than the statutory rate primarily due to the impact of changes in the valuation allowances that limit tax benefits for the Company's federal and state deferred tax assets.

During the three months ended June 30, 2023, the Company determined it is more likely than not that approximately $2.6 million of tax benefits related to the deductibility of capitalized interest will not be recognized. Interest on unrecognized tax benefits was $0.2 million for the three and six months ended June 30, 2023, which was recorded as a component of income

17

tax expense. Within the next twelve months, it is reasonably possible that the amount of unrecognized tax benefits will decrease by approximately $0.9 million due to the expiration of statutes of limitation, which is anticipated to impact the effective tax rate.

For the six months ended June 30, 2023, the Company believes that it is more likely than not that the benefit from a portion of its federal and state net operating loss (NOL) carryforwards, deferred tax assets related to interest disallowance under Internal Revenue Code Section 163(j), and certain state deferred tax assets, net of offsetting deferred tax liabilities, will not be realized and accordingly, the Company maintains related valuation allowances. For the six months ended June 30, 2023, the Company recorded approximately $39.4 million income tax benefit related to changes in valuation allowances because of decreases in federal and state deferred tax assets. As of June 30, 2023 and December 31, 2022, the valuation allowances related to federal and state deferred tax assets were approximately $117.3 million and $156.7 million, respectively.

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EQUITRANS MIDSTREAM CORPORATION

Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion and analysis of financial condition and results of operations in conjunction with the consolidated financial statements, and the notes thereto, included elsewhere in this report.

Cautionary Statements

Disclosures in this Quarterly Report on Form 10-Q contain certain forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the Exchange Act), and Section 27A of the Securities Act of 1933, as amended (the Securities Act). Statements that do not relate strictly to historical or current facts are forward-looking and usually identified by the use of words such as "anticipate," "estimate," "could," "would," "will," "may," "assume," "aspire," "design," "potential," "focused," "forecast," "approximate," "opportunity," "objective," "expect," "project," "intend," "plan," "aim," "believe," "target," "outlook," "seek," "strive," "view," "continue," "goal," "guidance," "strategy," "scheduled," "position," "pursue," "predict," "budget" and other words of similar meaning in connection with any discussion of future operating or financial matters. Without limiting the generality of the foregoing, forward-looking statements contained in this Quarterly Report on Form 10-Q include the matters discussed in the section captioned "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations," and the expectations of plans, strategies, objectives, and growth and anticipated financial and operational performance of Equitrans Midstream Corporation (together with its subsidiaries, Equitrans Midstream or the Company), including the following and/or statements with respect thereto, as applicable:

•guidance and any changes in such guidance in respect of the Company’s gathering, transmission and storage and water services revenue and volume, including the anticipated effects associated with the EQT Global GGA and related documents entered into with EQT;

•projected revenue (including from firm reservation fees) and volumes, gathering rates, deferred revenues, expenses and contract liabilities, and the effects on liquidity, leverage, projected revenue, deferred revenue and contract liabilities associated with the EQT Global GGA and the MVP project (including changes in timing for such project);

•the ultimate gathering MVC fee relief, and timing thereof, provided to EQT under the EQT Global GGA and related agreements;

•the Company's ability to de-lever and timing and means thereof;

•the ultimate financial, business, reputational and/or operational impacts resulting, directly or indirectly, from the Rager Mountain natural gas storage field incident;

•the weighted average contract life of gathering, transmission and storage contracts;

•infrastructure programs (including the targeted or ultimate timing, cost, capacity and sources of funding with respect to gathering, transmission and storage and water projects);

•the cost to construct or restore right-of-way for, capacity of, shippers for, timing and durability of regulatory approvals and concluding litigation, final design (including project scope, expansions, extensions or refinements and capital related thereto), ability to contract additional capacity on, mitigate emissions from, targeted in-service dates of, and completion (including potential timing of such completion) of current, planned or in-service projects or assets, in each case as applicable;

•the effect of the Fiscal Responsibility Act of 2023 on the MVP Joint Venture's ability to complete the MVP project;

•the ability to achieve, and targeted timing for achieving, completion of the MVP project, risks related thereto, the realizability of the MVP performance award program, and the degree to which, if at all, the Amendment (as defined in Note 5) fosters the Company completing the MVP project safely and in compliance with environmental standards;

•the realizability of all or any portion of the Henry Hub cash bonus payment provision of the EQT Global GGA;

•the potential for future bipartisan support for, and the potential timing for, additional federal energy infrastructure permitting reform legislation to be enacted;

•the ultimate terms, partner relationships and structure of the MVP Joint Venture and ownership interests therein;

19

•the impact of changes in assumptions and estimates relating to the potential completion and full in-service timing of the MVP project (as well as changes in such timing) on, among other things, the fair value of the Henry Hub cash bonus payment provision of the EQT Global GGA, gathering rates, the amount of gathering MVC fee relief and the estimated transaction price allocated to the Company's remaining performance obligations under certain contracts with firm reservation fees and MVCs;

•the Company's ability to identify and complete opportunities to optimize its existing asset base and/or expansion projects in the Company's operating areas and in areas that would provide access to new markets;

•the Company's ability to bring, and targeted timing for bringing, in-service the backbone of its mixed-use water system (and expansions thereto), and realize benefits therefrom in accordance with its strategy for its water services business segment;

•     the Company's ability to identify and complete acquisitions and other strategic transactions, including joint ventures, effectively integrate transactions into the Company's operations, and achieve synergies, system optionality, accretion and other benefits associated with transactions, including through increased scale;

•     the potential for the MVP project, EQM's leverage, customer credit ratings changes, defaults, acquisitions, dispositions and financings to impact EQM's credit ratings and the potential scope of any such impacts;

•     the effect and outcome of contractual disputes, litigation and other proceedings, including regulatory investigations and proceedings;

•     the potential effects of any consolidation of or effected by upstream gas producers, whether in or outside of the Appalachian Basin;

•     the potential for, timing, amount and effect of future issuances or repurchases of the Company's securities;

•     the effects of conversion, if at all, of the Equitrans Midstream Preferred Shares;

•     the effects of seasonality;

•     expected cash flows, cash flow profile (and support therefor from certain contract structures) and MVCs, including those associated with the EQT Global GGA, and the potential impacts thereon of the commission and in-service timing (or absence thereof) and cost of the MVP project;

•     projected capital contributions and capital and operating expenditures, including the amount and timing of reimbursable capital expenditures, capital budget and sources of funds for capital expenditures;

•     the Company's ability to recoup replacement and related costs;

•     future dividend amounts, timing and rates;

•     statements regarding macroeconomic factors' effects on the Company's business, including future commodity prices and takeaway capacity constraints in the Appalachian Basin;

•     future decisions of customers in respect of production growth, curtailing natural gas production, timing of turning wells in line, rig and completion activity and related impacts on the Company's business, and the effect, if any, on such future decisions should the MVP be brought in-service;

•     the Company's liquidity and financing position and requirements, including sources, availability and sufficiency;

•     statements regarding future interest rates and/or reference rates and the potential impacts thereof;

•     the ability of the Company's subsidiaries (some of which are not wholly owned) to service debt under, and comply with the covenants contained in, their respective credit agreements;

•     expectations regarding natural gas and water volumes in the Company's areas of operations;

•     the Company's ability to achieve anticipated benefits associated with the execution of the EQT Global GGA and other commercial agreements;

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•     the Company's ability to position itself for a lower carbon economy, achieve, and create value from, its environmental, social and governance (ESG) and sustainability initiatives, targets and aspirations (including targets and aspirations set forth in its climate policy) and respond, and impacts of responding, to increasing stakeholder scrutiny in these areas;

•     the effectiveness of the Company's information technology and operational technology systems and practices to detect and defend against evolving cyberattacks on United States critical infrastructure;

•     the effects and associated cost of compliance with existing or new government regulations including any quantification of potential impacts of regulatory matters related to climate change on the Company; and

•     future tax rates, status and position.

The forward-looking statements included in this Quarterly Report on Form 10-Q involve risks and uncertainties that could cause actual results to differ materially from projected results. Accordingly, investors should not place undue reliance on forward-looking statements as a prediction of actual results. The Company has based these forward-looking statements on management's current expectations and assumptions about future events. While the Company considers these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory, judicial, construction and other risks and uncertainties, many of which are difficult to predict and are beyond the Company's control. The risks and uncertainties that may affect the operations, performance and results of the Company's business and forward-looking statements include, but are not limited to, those set forth under Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022, as updated by this Quarterly Report on Form 10-Q, as applicable.

Any forward-looking statement speaks only as of the date on which such statement is made, and the Company does not intend to correct or update any forward-looking statement, unless required by securities laws, whether as a result of new information, future events or otherwise.

Executive Overview

Net income attributable to Equitrans Midstream common shareholders was $52.6 million, $0.12 per diluted share, for the three months ended June 30, 2023 compared to $46.2 million, $0.11 per diluted share, for the three months ended June 30, 2022. The increase resulted primarily from a loss on extinguishment of debt during the three months ended June 30, 2022, higher equity income and higher other income, net, partially offset by higher operating expenses, lower operating revenues and higher interest expense.

Net income attributable to Equitrans Midstream common shareholders was $139.7 million, $0.32 per diluted share, for the six months ended June 30, 2023 compared to $126.7 million, $0.29 per diluted share, for the six months ended June 30, 2022. The increase resulted primarily from higher operating revenues, a loss on extinguishment of debt during the six months ended June 30, 2022, higher equity income and higher other income, net, partially offset by higher operating expenses and higher interest expense.

In the course of its 2022 year-end process, the Company identified certain corrections in its previously issued unaudited interim consolidated financial statements primarily related to the accounting for the Henry Hub cash bonus payment provision. The Company determined that the related impact was not material and has revised its previously issued unaudited interim consolidated financial statements for the affected prior periods. See Note 1 for additional information.

Business Segment Results

Operating segments are revenue-producing components of an enterprise for which separate financial information is produced internally and is subject to evaluation by the chief operating decision maker in deciding how to allocate resources. Headquarters costs consist primarily of certain unallocated corporate expenses and transaction costs, as applicable. Net interest expense, loss on extinguishment of debt, components of other income (expense), net and income tax expense (benefit) are managed on a consolidated basis. The Company has presented each segment's operating income (loss), other income (expense), net, equity income, impairment of equity method investment and various operational measures, as applicable, in the following sections. Management believes that the presentation of this information is useful to management and investors regarding the financial condition, results of operations and trends and uncertainties of its segments. The Company has reconciled each segment's operating income (loss) to the Company's consolidated operating income (loss) and net income (loss) in Note 2.

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Gathering Results of Operations

	Three Months Ended June 30,					Six Months Ended June 30,
	2023		2022		% Change	2023		2022		% Change
	(Thousands, except per day amounts)
FINANCIAL DATA
Firm reservation fee revenues (a)	$	141,737	$	138,605	2.3	$	281,808	$	271,202	3.9
Volumetric-based fee revenues (b)	68,457		86,709		(21.0)	139,138		173,902		(20.0)
Total operating revenues	210,194		225,314		(6.7)	420,946		445,104		(5.4)
Operating expenses:
Operating and maintenance	25,136		21,703		15.8	46,532		44,116		5.5
Selling, general and administrative	38,446		19,269		99.5	57,954		38,334		51.2
Depreciation	49,387		48,573		1.7	98,736		96,828		2.0
Amortization of intangible assets	16,205		16,205		—	32,410		32,410		—
Total operating expenses	129,174		105,750		22.2	235,632		211,688		11.3
Operating income	$	81,020	$	119,564	(32.2)	$	185,314	$	233,416	(20.6)
Other income, net (c)	$	19,416	$	3,701	424.6	$	10,922	$	5,305	105.9
OPERATIONAL DATA
Gathered volumes (BBtu per day)
Firm capacity (d)	5,273		5,218		1.1	5,283		5,237		0.9
Volumetric-based services	2,147		2,654		(19.1)	2,118		2,696		(21.4)
Total gathered volumes	7,420		7,872		(5.7)	7,401		7,933		(6.7)
Capital expenditures (e)	$	71,893	$	69,189	3.9	$	131,606	$	122,336	7.6

(a)For the three and six months ended June 30, 2023, firm reservation fee revenues included approximately $2.4 million and $5.7 million, respectively, of MVC unbilled revenues. For the three and six months ended June 30, 2022, firm reservation fee revenues included approximately $6.2 million and $8.9 million, respectively, of MVC unbilled revenues.

(b)For the six months ended June 30, 2023, volumetric-based fee revenues included a one-time contract buyout by a customer for approximately $5.0 million.

(c)Other income, net includes the unrealized gain on derivative instruments associated with the Henry Hub cash bonus payment provision. See Note 7 for further information.

(d)Includes volumes up to the contractual MVC under agreements structured with MVCs. Volumes in excess of the contractual MVC are reported under volumetric-based services.

(e)Includes approximately $5.0 million and $8.2 million of capital expenditures related to the noncontrolling interest in Eureka Midstream for the three and six months ended June 30, 2023, respectively, and includes approximately $8.7 million and $11.7 million of capital expenditures related to such noncontrolling interest for the three and six months ended June 30, 2022, respectively.

Three Months Ended June 30, 2023 Compared to Three Months Ended June 30, 2022

Gathering operating revenues decreased by $15.1 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022. Firm reservation fee revenues increased by $3.1 million due to $5.6 million of higher firm reservation fees associated with the EQT Global GGA, partially offset by lower average rates on a certain customer MVC. Volumetric-based fee revenues decreased by $18.3 million due to lower gathered volumes resulting from reduced producer activity.

Gathering operating expenses increased by $23.4 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022. Selling, general and administrative expenses increased by $19.2 million primarily due to higher personnel costs attributable to expenses associated with the MVP PSU Program that included a cumulative catch-up of $8.4 million since the inception of the award. Operating and maintenance expenses increased by $3.4 million primarily due to higher personnel costs.

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Six Months Ended June 30, 2023 Compared to Six Months Ended June 30, 2022

Gathering operating revenues decreased by $24.2 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. Firm reservation fee revenues increased by $10.6 million primarily due to $14.9 million of higher firm reservation fees associated with the EQT Global GGA and increased contracted capacity, partially offset by lower average rates on a certain customer MVC. Volumetric-based fee revenues decreased by $34.8 million primarily due to lower gathered volumes resulting from reduced producer activity, partially offset by a one-time contract buyout by a customer of approximately $5.0 million.

Gathering operating expenses increased by $23.9 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. Selling, general and administrative expenses increased by $19.6 million primarily due to higher personnel costs attributable to expenses associated with the MVP PSU Program that included a cumulative catch-up of $8.4 million since the inception of the award. Operating and maintenance expenses increased by $2.4 million primarily due to higher property taxes and increased personnel costs. Depreciation expense increased by $1.9 million as a result of additional assets placed in-service.

See "Outlook" for discussions of the EQT Global GGA, and the transactions related thereto, including periodic gathering MVC fees declines even if MVP would not achieve full in-service. Additionally, as discussed in "Outlook," in connection with MVP full in-service the EQT Global GGA provides for more significant potential gathering MVC fees declines in certain contract years. Firm reservation fee revenues under the Company’s Hammerhead gathering agreement with EQT are expected to contribute to an increase in the Company’s firm reservation fee revenues following achievement of the Hammerhead pipeline full commercial in-service in conjunction with full MVP in-service. However, the percentage of the Company's operating revenues that are generated by firm reservation fees may vary year to year depending on various factors, including customer volumes and the rates realizable under the Company’s contracts, including the EQT Global GGA. See also "Commodity Price Risk" in Part I, "Item 3. Quantitative and Qualitative Disclosures About Market Risk" of this Quarterly Report on Form 10-Q for additional information on factors that could affect the Company's operating revenues. Also, see Note 5 for further discussion on the MVP PSU Program.

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Transmission Results of Operations

	Three Months Ended June 30,					Six Months Ended June 30,
	2023		2022		% Change	2023		2022		% Change
	(Thousands, except per day amounts)
FINANCIAL DATA
Firm reservation fee revenues	$	82,247	$	84,675	(2.9)	$	183,969	$	187,545	(1.9)
Volumetric-based fee revenues (a)	10,293		6,403		60.8	47,477		14,328		231.4
Total operating revenues	92,540		91,078		1.6	231,446		201,873		14.6
Operating expenses:
Operating and maintenance	14,356		7,897		81.8	28,746		11,830		143.0
Selling, general and administrative	15,829		8,436		87.6	27,535		16,842		63.5
Depreciation	13,904		13,904		—	27,792		27,798		—
Total operating expenses	44,089		30,237		45.8	84,073		56,470		48.9
Operating income	$	48,451	$	60,841	(20.4)	$	147,373	$	145,403	1.4
Equity income	$	23,686	$	39	60,633.3	$	23,808	$	43	55,267.4
OPERATIONAL DATA
Transmission pipeline throughput (BBtu per day)
Firm capacity reservation	3,212		3,037		5.8	3,278		3,708		(11.6)
Volumetric-based services	26		17		52.9	15		35		(57.1)
Total transmission pipeline throughput	3,238		3,054		6.0	3,293		3,743		(12.0)
Average contracted firm transmission reservation commitments (BBtu per day)	3,542		3,793		(6.6)	3,890		4,140		(6.0)
Capital expenditures (b)	$	14,375	$	6,339	126.8	$	23,564	$	10,565	123.0

(a)For the six months ended June 30, 2023, volumetric-based fee revenues included a one-time contract buyout by a customer for approximately $23.8 million.

(b)Transmission capital expenditures do not include aggregate capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of approximately $36.0 million and $70.5 million for the three and six months ended June 30, 2023, respectively, and $39.2 million and $111.8 million for the three and six months ended June 30, 2022, respectively.

Three Months Ended June 30, 2023 Compared to Three Months Ended June 30, 2022

Transmission operating revenues increased by $1.5 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022. Firm reservation fee revenues decreased by $2.4 million primarily due to lower contracted capacity payments resulting from the one-time contract buyout that occurred during the first quarter of 2023. Volumetric-based fee revenues increased $3.9 million primarily as a result of increased usage volumes.

Operating expenses increased by $13.9 million for the three months ended June 30, 2023, compared to the three months ended June 30, 2022. Selling, general and administrative expenses increased $7.4 million resulting primarily from higher personnel costs due to expenses associated with the MVP PSU Program that included a cumulative catch-up of $3.2 million since the inception of the award. Operating and maintenance expense increased $6.5 million primarily due to expenses associated with the Rager Mountain natural gas storage field incident, the timing of operational efficiencies and higher personnel costs.

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Six Months Ended June 30, 2023 Compared to Six Months Ended June 30, 2022

Transmission operating revenues increased by $29.6 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. Firm reservation fee revenues decreased by $3.6 million primarily due to lower contracted capacity payments resulting from the one-time contract buyout that occurred during the first quarter of 2023, partially offset by higher average reservation rates. Volumetric-based fee revenues increased $33.2 million primarily as a result of a one-time contract buyout by a customer of approximately $23.8 million, higher average rates and higher storage activities.

Operating expenses increased by $27.6 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. Operating and maintenance expense increased $16.9 million primarily due to the timing of operational efficiencies, expenses associated with the Rager Mountain natural gas storage field incident, and increased personnel costs. Selling, general and administrative expenses increased $10.7 million resulting primarily from higher personnel costs due to expenses associated with the MVP PSU Program that included a cumulative catch-up of $3.2 million since the inception of the award and an increased reserve for bad debt expense.

Post-incident workstreams related to the Rager Mountain natural gas storage field incident and required to potentially return the field to injection operations, including the root cause analysis and further analysis of other wells at the Rager Mountain facility, are ongoing, and the Company expects that the root cause analysis will be completed during the summer of 2023. The Company is continuing and expects to continue to incur costs and expenses as a result of or arising in relation to the incident and future costs and expenses would be reflected in the Company's future Transmission operating results. For additional information, see Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q. See also, "The November 2022 incident involving the venting of natural gas from a well at Equitrans, L.P.’s Rager Mountain natural gas storage facility required that we incur costs and expenses to halt such venting, and investigate and respond to the incident, including undertaking ongoing reviews of other storage assets. Activities and investigations responsive to the incident are ongoing, and, consequently, we are incurring and in the future we expect to incur further costs and expenses, whether resulting from or arising out of the incident, which could, depending on their scope and timing, materially adversely affect our business, financial condition, results of operations, liquidity and ability to pay dividends to our shareholders." included in Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Equity income increased by $23.6 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022 and $23.8 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022, respectively, due to the increase in the MVP Joint Venture's AFUDC on the MVP project resulting from the resumption of growth construction activities. The Company's equity income in future periods will continue to be affected by the MVP project growth construction activities and associated AFUDC, and the timing of the completion of the MVP project, and such impact could continue to be substantial. See Note 4, "Outlook" below and Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q for information on factors that have affected and/or, as applicable, could affect MVP project growth construction activities.

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Water Results of Operations

	Three Months Ended June 30,					Six Months Ended June 30,
	2023		2022		% Change	2023		2022		% Change
	(Thousands, except MMgal amounts)
FINANCIAL DATA
Firm reservation fee revenues	$	9,389	$	9,375	0.1	$	18,764	$	15,127	24.0
Volumetric-based fee revenues	6,346		2,844		123.1	23,650		8,653		173.3
Total operating revenues	15,735		12,219		28.8	42,414		23,780		78.4
Operating expenses:
Operating and maintenance	6,254		2,820		121.8	13,299		9,538		39.4
Selling, general and administrative	2,440		1,475		65.4	3,838		3,726		3.0
Depreciation	6,511		4,804		35.5	12,374		9,321		32.8
Total operating expenses	15,205		9,099		67.1	29,511		22,585		30.7
Operating income	$	530	$	3,120	(83.0)	$	12,903	$	1,195	979.7
OPERATIONAL DATA
Water services volumes (MMgal)
Firm capacity reservation (a)	114		106		7.5	222		216		2.8
Volumetric-based services	168		54		211.1	519		262		98.1
Total water volumes	282		160		76.3	741		478		55.0
Capital expenditures	$	11,148	$	22,526	(50.5)	$	22,224	$	32,091	(30.7)

(a)    Includes volumes up to the contractual MVC under agreements structured with MVCs or ARCs, as applicable. Volumes in excess of the contractual MVC are reported under volumetric-based services.

Three Months Ended June 30, 2023 Compared to Three Months Ended June 30, 2022

Water operating revenues increased by $3.5 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022 as a result of increased volumetric-based fee revenues primarily due to higher volumes, partially offset by lower average rates.

Water operating expenses increased by $6.1 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022. Operating and maintenance expense increased $3.4 million due to higher mixed-use water storage expenses related to storage facilities placed in-service during the three months ended June 30, 2023, higher purchased water costs and water transfer expenses as a result of increased activity. Depreciation expense increased $1.7 million due to additional assets placed in-service, and selling, general and administrative expenses increased $1.0 million due to higher personnel costs.

Six Months Ended June 30, 2023 Compared to Six Months Ended June 30, 2022

Water operating revenues increased by $18.6 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. Firm reservation fee revenues increased by $3.6 million primarily as a result of increased revenues associated with ARCs, partially offset by lower other third-party activity. Volumetric-based fee revenues increased by $15.0 million primarily due to higher volumes and rates.

Water operating expenses increased by $6.9 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. Operating and maintenance expense increased $3.8 million due to higher water storage expenses related to storage facilities placed in-service during the six months ended June 30, 2023 and higher purchased water costs resulting from increased activity, partially offset by lower pipeline repair expenses. Depreciation expense increased by $3.1 million due to additional assets placed in-service.

The Company’s volumetric-based water services are directly associated with producers’ well completion activities and fresh and produced water needs (which are primarily driven by horizontal lateral lengths and the number of completion stages per well). Therefore, the Water volumetric operating results traditionally fluctuate from year-to-year in response to producers’ well completion activities. Firm reservation revenues are expected to be mostly consistent due to the ARC under the 2021 Water

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Services Agreement that became effective March 1, 2022. See "Outlook" for further discussion of the 2021 Water Services Agreement.

Other Income Statement Items

Other Income, Net

Other income, net increased by $15.7 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022. The increase was primarily due to a $19.4 million unrealized gain on derivative instruments during the three months ended June 30, 2023, as compared to a $3.7 million unrealized gain on derivative instruments during the three months ended June 30, 2022, due to changes in probability-weighted assumptions regarding MVP project completion, as well as changes in NYMEX Henry Hub natural gas futures prices associated with the Henry Hub cash bonus payment provision.

Other income, net increased by $6.0 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022. The increase was primarily due to a $10.9 million unrealized gain on derivative instruments during the six months ended June 30, 2023, as compared to a $5.3 million unrealized gain on derivative instruments during the six months ended June 30, 2022, due to changes in probability-weighted assumptions regarding MVP project completion, as well as changes in NYMEX Henry Hub natural gas futures prices associated with the Henry Hub cash bonus payment provision.

See also "Outlook" for a discussion of factors affecting the estimated fair value of the derivative asset attributable to the Henry Hub cash bonus payment provision that is recognized in other income, net on the Company's statements of consolidated comprehensive income.

Loss on Extinguishment of Debt

During the three and six months ended June 30, 2022, the Company incurred a loss on extinguishment of debt of approximately $24.9 million related to the 2022 Tender Offers for senior notes and open market repurchase premiums and fees, and write off of the respective unamortized discounts and financing costs associated with the purchase of portions of 2023, 2024 and 2025 Notes in such tender offers.

Net Interest Expense

Net interest expense increased by $8.5 million for the three months ended June 30, 2023 compared to the three months ended June 30, 2022 primarily due to interest on the senior notes issued in 2022 and increased interest rates on the revolving credit facilities, partially offset by the impact of the 2022 Tender Offers.

Net interest expense increased by $20.4 million for the six months ended June 30, 2023 compared to the six months ended June 30, 2022 primarily due to interest on the senior notes issued in 2022 and increased interest rates on the revolving credit facilities, partially offset by the impact of the 2022 Tender Offers.

See Note 6 for a discussion of certain of the Company's outstanding debt.

Income Tax Expense (Benefit)

See Note 9 for an explanation of the changes in income tax expense for the three and six months ended June 30, 2023 compared to the three and six months ended June 30, 2022.

Net Income Attributable to Noncontrolling Interest

Net income attributable to noncontrolling interest decreased by $2.3 million and $1.6 million for the three and six months ended June 30, 2023, respectively, compared to the three and six months ended June 30, 2022, respectively, as a result of lower net income on Eureka Midstream.

Capital Expenditures

See "Investing Activities" and "Capital Requirements" under "Capital Resources and Liquidity" for a discussion of capital expenditures and capital contributions.

Outlook

The Company's strategically located assets overlay core acreage in the Appalachian Basin. The location of the Company's assets allows its producer customers to access major demand markets in the U.S. The Company is one of the largest natural gas gatherers in the U.S. and its largest customer, EQT, was one of the largest natural gas producers in the U.S. based on average

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daily sales volumes as of June 30, 2023 and EQT's public senior debt had investment grade credit ratings from Standard & Poor's Global Ratings (S&P) and Fitch Ratings (Fitch) as of that date. During the six months ended June 30, 2023, approximately 70% of the Company's operating revenues were generated from firm reservation fee revenues. Generally, the Company is focused on utilizing contract structures reflecting long-term firm capacity, MVC or ARC commitments which are intended to provide support to its cash flow profile. The percentage of the Company's operating revenues that are generated by firm reservation fees (as well as the Company's revenues generally) may vary year to year depending on various factors, including customer volumes and the rates realizable under the Company's contracts, including the EQT Global GGA which provides for periodic gathering MVC fees declines through January 1, 2028 (with the fees then remaining fixed throughout the remaining term), even if MVP would not achieve full in-service. Additionally, as discussed below, in connection with MVP full in-service the EQT Global GGA provides for more significant potential gathering MVC fees declines in certain contract years.

The Company's principal strategy is to achieve greater scale and scope, enhance the durability of its financial strength and to continue to work to position itself for a lower carbon economy, which the Company expects will drive future growth and investment. The Company is implementing its strategy by continuing to pursue its organic growth projects, including particularly the MVP given the Company’s belief that the MVP will, among other benefits, allow for greater natural gas production in the Appalachian Basin (and/or result in increased volumes flowing to the Company's gathering and transmission system), focusing on opportunities to use its existing assets to deepen and grow its customer relationships at optimized levels of capital spending and taking into account the Company's leverage, and continuing to prudently invest resources in its sustainability-oriented initiatives. The Company is also continuing to focus on maintaining and strengthening its balance sheet. Additionally, the Company also periodically evaluates strategically aligned inorganic growth opportunities (whether within its existing footprint or to extend the Company's reach into the southeast United States and to become closer to key demand markets, such as the Gulf of Mexico LNG export market).

As part of its approach to organic growth, the Company is focused on its projects and assets outlined below, many of which are supported by contracts with firm capacity, MVC or ARC commitments.

The Company expects that the MVP (should it be placed in-service), together with the Hammerhead pipeline and Equitrans, L.P. Expansion Project (EEP), will primarily drive the Company's organic growth, as discussed in further detail below. In addition, the Company continues to focus on de-levering its balance sheet (which the Company views as a critical strategic objective), including in connection with the MVP (should it be placed in-service).

•Mountain Valley Pipeline. The MVP is being constructed by a joint venture among the Company and affiliates of each of NextEra Energy, Inc. (NEE), Consolidated Edison, Inc. (Con Edison), AltaGas Ltd. and RGC Resources, Inc. (RGC). As of June 30, 2023, the Company owned an approximate 47.3% interest in the MVP project and will operate the MVP. The MVP is an estimated 300-mile, 42-inch diameter natural gas interstate pipeline with a targeted capacity of 2.0 Bcf per day that is designed to span from the Company's existing transmission and storage system in Wetzel County, West Virginia to Pittsylvania County, Virginia, which will provide access to the growing southeast demand markets. The MVP Joint Venture has secured a total of 2.0 Bcf per day of firm capacity commitments at 20-year terms. Additional shippers have expressed interest in the MVP project and the MVP Joint Venture is evaluating an expansion opportunity that could add approximately 0.5 Bcf per day of capacity through the installation of incremental compression.

In October 2017, the FERC issued the Certificate of Public Convenience and Necessity for the MVP. In the first quarter of 2018, the MVP Joint Venture received limited notice to proceed with certain construction activities from the FERC and commenced construction. However, as discussed in "The regulatory approval process for the construction of new midstream assets is very challenging, has significantly increased costs and delayed then-targeted in-service dates, and decisions by regulatory and judicial authorities in pending or potential proceedings, particularly with respect to litigation in the Fourth Circuit regarding MVP, are likely to impact our or the MVP Joint Venture's ability to obtain or maintain in effect all approvals and authorizations necessary to complete certain projects in a timely manner or at all, or our ability to achieve the expected investment returns on the projects." included in Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022, as well as in Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q, the MVP project has been subject to repeated, significant delays and cost increases because of legal and regulatory setbacks, particularly in respect of litigation in the U.S. Court of Appeals for the Fourth Circuit (Fourth Circuit).

Notwithstanding such prior setbacks, the MVP Joint Venture continued to engage in pursuing the authorizations necessary under applicable law from the relevant agencies to complete the MVP project, including on February 28, 2023, the U.S. Department of the Interior’s Fish and Wildlife Service (FWS) issuing a new Biological Opinion and Incidental Take Statement (2023 BiOp) for the MVP project and in May 2023, the U.S. Forest Service and Bureau of Land Management issuing authorizations related to MVP’s segment in the Jefferson National Forest (JNF). In

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conjunction with the pursuit of outstanding authorizations, the Company urged the United States Congress to expeditiously pass, and for there to be enacted, federal energy infrastructure permitting reform legislation that specifically requires the completion of the MVP project.

On June 3, 2023, the President of the United States signed into law the Fiscal Responsibility Act of 2023 that, among other things, ratified and approved all permits and authorizations necessary for the construction and initial operation of the MVP, directed the applicable federal officials and agencies to maintain such authorizations, required the Secretary of the Army to issue not later than June 24, 2023 all permits or verifications necessary to complete construction of the MVP and allow for the MVP’s operation and maintenance, and divested courts of jurisdiction to review agency actions on approvals necessary for MVP construction and initial operation.

Thereafter, on June 8, 2023, the West Virginia Department of Environmental Protection issued a new Section 401 water quality certification for the MVP project, on June 23, 2023, the Huntington, Pittsburgh and Norfolk Districts of the U.S. Army Corps of Engineers issued the MVP Joint Venture an Individual Permit to effect approximately 300 water crossings utilizing open cut techniques, and, on June 28, 2023, the FERC authorized the MVP Joint Venture to resume all construction activities in all MVP project locations, including the remaining portion of the Exclusion Zone discussed in Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q, and the MVP Joint Venture recommenced forward construction activity.

As further discussed in Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q, project opponents continue to challenge MVP project-related authorizations. In connection with such challenges, the Fourth Circuit issued a stay halting MVP project construction in the JNF and a stay of the 2023 BiOp, effectively halting forward construction for the entirety of the MVP project, on July 10, 2023 and July 11, 2023, respectively. The MVP Joint Venture subsequently filed an emergency application to vacate the stays with the U.S. Supreme Court and the U.S. Supreme Court vacated the stays on July 27, 2023. Accordingly, the MVP Joint Venture recommenced forward construction activity, with the intention to work to complete the four to five months of remaining construction activity as promptly as practicable, with the target of year-end 2023. Should construction be completed and in service authorized by the FERC by year-end 2023, contractual obligations accordingly would commence January 1, 2024 and the Company believes that the total project cost would be approximately $6.6 billion (excluding AFUDC).

Completion of the MVP project, and the timing and cost thereof, remains subject to a variety of risks, including, among other things, construction-related risks, as have been in certain cases and may be affected by factors such as weather, crew productivity, the need to apply complex construction techniques and adhere to permit requirements, continued project opposition, including physical interference with construction, and restrictions which may be in effect on construction at varying points and locations during the construction calendar. For example, certain bores could require greater construction time than projected. Further, since the recommencement of forward construction, project opponents also have increased actions intended to disrupt the MVP Joint Venture’s operations, including protesting construction efforts and acts of vandalism. Additionally, the ability to construct in certain areas of the project in the second half of 2023, including certain remaining water crossings, may be affected by restrictions imposed to protect endangered or threatened species. See also "Expanding our business by constructing new midstream assets subjects us to construction, regulatory, environmental, political and legal uncertainties that are beyond our control." included in Part I, "Item 1A. Risk Factors" of the Company's Annual Report on Form 10-K for the year ended December 31, 2022. Further, there remains pending litigation relating to the project. For further information, see Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q.

Adverse developments, whatever the cause, affecting the MVP project could increase project costs and/or further delay completion of the project, and adversely affect the Company.

On November 4, 2019, Con Edison exercised an option to cap its investment in the construction of the MVP project at approximately $530 million (excluding AFUDC). On May 4, 2023, RGC exercised an option for the Company to fund RGC’s portion of future capital contributions with respect to the MVP project, which funding the Company commenced in June 2023 and will continue through the full in-service date of the MVP. The Company and NEE are obligated, and RGC prior to the exercise of its option described above had opted, to fund the shortfall in Con Edison's capital contributions on a pro rata basis. Following RGC’s exercise of its option, the Company is also funding RGC’s portion of Con Edison’s shortfall. Such funding by the Company in respect of the Con Edison shortfall and RGC’s portion of capital contributions has and will correspondingly increase the Company's interests in the MVP project and decrease Con Edison's and RGC’s respective interest, as applicable, in the MVP project. If the project were to be completed in 2023 at a total project cost of approximately $6.6 billion (excluding AFUDC), the Company’s equity ownership in the MVP project would progressively increase from approximately 47.3% to approximately 48.3%.

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Through June 30, 2023, the Company had funded approximately $2.8 billion to the MVP Joint Venture for the MVP project. If the MVP project were to be completed in 2023, the Company expects it would make total capital contributions to the MVP Joint Venture in 2023 of approximately $610 million to $650 million primarily related to forward construction for a total of approximately $3.4 billion over the project's construction, inclusive of approximately $180 million in excess of the Company's ownership interest.

•Wellhead Gathering Expansion Projects and Hammerhead Pipeline. During the six months ended June 30, 2023, the Company invested approximately $131.6 million in gathering projects (inclusive of capital expenditures related to the noncontrolling interest in Eureka Midstream). For 2023, the Company expects to invest approximately $255 million to $295 million in gathering projects (inclusive of expected capital expenditures of approximately $15 million related to the noncontrolling interest in Eureka Midstream). The primary projects include infrastructure expansion and optimization in core development areas in the Marcellus and Utica Shales in southwestern Pennsylvania, southeastern Ohio and northern West Virginia for EQT, Range Resources Corporation (Range Resources) and other producers. The Company has seen and expects that it will continue to see the benefits of return-to-pad drilling and system integrations in 2023, and accordingly, continues to estimate gathering capital expenditures required to maintain flat gathered volumes in a given year would be approximately $200 million for 2023.

The Hammerhead pipeline is a 1.6 Bcf per day gathering header pipeline that is primarily designed to connect natural gas produced in Pennsylvania and West Virginia to the MVP, Texas Eastern Transmission and Eastern Gas Transmission, is supported by a 20-year term, 1.2 Bcf per day, firm capacity commitment from EQT, and cost approximately $540 million. The Company expects Hammerhead pipeline full commercial in-service to commence in conjunction with full MVP in-service.

The Company also has an agreement with a producer customer to install approximately 32,000 horsepower booster compression to existing facilities. The project is backed by a long-term commitment and is targeted to be in-service in mid-2024. The Company expects to invest approximately $60 million, with a majority of the capital spend in 2023, which is reflected within the range of 2023 investments for gathering projects noted above, and 2024.

•Transmission Projects and Equitrans Expansion Project. During the six months ended June 30, 2023, the Company invested approximately $23.6 million in transmission projects. For 2023, the Company expects to invest approximately $80 million to $90 million in transmission projects. This includes an estimate of $5 million to $10 million of capital expenditures related to the Rager Mountain natural gas storage field incident based on current information (however, such estimate is not an estimate of all potential capital expenditures from the incident as some items are not able to be estimated as of the filing of this Quarterly Report on Form 10-Q). The $80 million to $90 million of expected investment in transmission projects also includes capital expenditures expected for 2023 associated with the Company's Ohio Valley Connector expansion project (OVCX). OVCX will increase deliverability on the Company's existing Ohio Valley Connector pipeline (OVC) by approximately 350 MMcf per day, create new receipt and delivery transportation paths, and enhance long-term reliability. The project is supported by new long-term firm capacity commitments of 330 MMcf per day, as well as an extension of approximately 1.0 Bcf per day of existing contracted mainline capacity for EQT. OVCX is designed to meet growing demand in key markets in the mid-continent and gulf coast through existing interconnects with long-haul pipelines in Clarington, Ohio. On July 7, 2022, the FERC issued a Notice of Intent to Prepare an Environmental Impact Statement for OVCX, and on January 20, 2023 issued the Final Environmental Impact Statement for the project. On June 15, 2023, the FERC issued the Certificate of Public Convenience and Necessity for OVCX and on July 27, 2023, the U.S. Army Corps of Engineers issued the last outstanding approval to the project. On July 31, 2023, the FERC issued the Notice to Proceed and the Company expects to commence construction imminently. The Company is targeting the incremental capacity to be in-service during the first half of 2024. The Company expects to invest approximately $160 million in the project. The project, as well as the Company's recent successful open season for the available transmission capacity that was the subject of the one-time transmission customer's contract buyout during the first quarter of 2023, is consistent with the Company's ongoing efforts to optimize existing assets and achieve capital efficiency.

The EEP is one of the Company's transmission projects and is designed to provide north-to-south capacity on the mainline Equitrans, L.P. system, including primarily for deliveries to the MVP. A portion of the EEP commenced operations with interruptible service in the third quarter of 2019. The EEP provides capacity of approximately 600 MMcf per day and offers access to several markets through interconnects with Texas Eastern Transmission, Eastern Gas Transmission and Columbia Gas Transmission. In connection with MVP full in service, firm transportation agreements for 550 MMcf per day of capacity will commence under 20-year terms.

•MVP Southgate Project. In April 2018, the MVP Joint Venture announced the MVP Southgate project, which is a contemplated interstate pipeline that was approved by the FERC to extend approximately 75 miles from the MVP at

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Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The Company is expected to operate the MVP Southgate project and owned a 47.2% interest in the MVP Southgate project as of June 30, 2023. The MVP Southgate project, as originally designed, was estimated to cost a total of approximately $450 million to $500 million, a portion of which the Company expected to fund.

The MVP Joint Venture submitted the MVP Southgate certificate application to the FERC in November 2018. In June 2020, the FERC issued the Certificate of Public Convenience and Necessity (MVP Southgate Certificate) for the MVP Southgate; however, the FERC, while authorizing the project, directed the Office of Energy Projects not to issue a notice to proceed with construction until necessary federal permits are received for the MVP project and the Director of the Office of Energy Projects lifts the stop work order and authorizes the MVP Joint Venture to continue constructing the MVP project. The FERC conditioned its authorization on the MVP Southgate project being built and made available for service by June 18, 2023. On June 15, 2023, the MVP Joint Venture filed a request with the FERC for an extension of time to June 18, 2026 to complete the MVP Southgate. The public comment period in respect of such request ended July 24, 2023, with various parties commenting on the request, and the request is pending. In addition, there have been certain other litigation and regulatory-related delays affecting completion of the MVP Southgate project, including on August 11, 2020, the North Carolina Department of Environmental Quality denied the MVP Southgate project's application for a Clean Water Act Section 401 Individual Water Quality Certification and Jordan Lake Riparian Buffer Authorization due to uncertainty surrounding the completion of the MVP project, which denial was reissued in April 2021 following an appellate proceeding. On December 3, 2021, the Virginia State Air Pollution Control Board denied the permit for the MVP Southgate project’s Lambert compressor station, which decision the MVP Joint Venture initially appealed before withdrawing its request to review the denial.

The MVP Joint Venture continues to evaluate the MVP Southgate project and is focused on its active negotiations with Dominion Energy North Carolina and a prospective customer regarding refining the MVP Southgate project’s design, scope and/or timing for the benefit of such customers in lieu of pursuing the project as originally contemplated. Dominion Energy North Carolina’s obligations under the precedent agreement in support of the original project are subject to certain conditions, including, among others, that the MVP Joint Venture will have completed construction of the project facilities by December 31, 2023. The Company is unable to ensure the results of the negotiations between the MVP Joint Venture and Dominion Energy North Carolina and the other prospective customer, including the ultimate design, scope, timing, undertaking or completion of the project.

•Water Operations. During the six months ended June 30, 2023, the Company invested approximately $22.2 million in its water infrastructure, primarily to continue to construct the initial mixed-use water system buildout. The Company placed portions of the initial mixed-use water system in service during 2022 and its second above ground water storage facility into service in July 2023, which brings its total water storage capacity to 350,000 barrels. The backbone of the mixed-use water system is expected to be substantially completed in 2023. In May 2023, the Company executed an agreement with a producer customer to provide fresh and mixed use water delivery service. The Company expects to invest approximately $30 million, primarily across 2023 and 2024, to complete the project build out. The 10-year agreement is backed by a minimum volume commitment. For 2023, the Company expects to invest approximately $45 million, primarily related to the continued construction of its mixed-use water system buildout.

See further discussion of capital expenditures in the "Capital Requirements" section below.

EQT Global GGA. On February 26, 2020 (the EQT Global GGA Effective Date), the Company entered into a Gas Gathering and Compression Agreement (as subsequently amended, the EQT Global GGA) with EQT and certain affiliates of EQT for the provision by the Company of certain gas gathering services to EQT in the Marcellus and Utica Shales of Pennsylvania and West Virginia. The EQT Global GGA is intended to, among other things, incentivize combo and return-to-pad drilling by EQT. Pursuant to the EQT Global GGA, EQT is subject to an initial annual MVC of 3.0 Bcf per day that gradually steps up to 4.0 Bcf per day through December 2031 following the full in-service date of the MVP (should it be placed in-service) and the dedication of a substantial majority of EQT's core acreage in southwestern Pennsylvania and West Virginia. The EQT Global GGA runs from the EQT Global GGA Effective Date through December 31, 2035, and will renew annually thereafter unless terminated by EQT or the Company pursuant to its terms. Pursuant to the EQT Global GGA, the Company has certain obligations to build connections to connect EQT wells to its gathering system, which are subject to limitations, including geographical in relation to the dedicated area, as well as the distance of such connections to the Company's then-existing gathering system, which have provided and could further provide capital efficiencies to EQM. In addition to the fees related to gathering services, the EQT Global GGA provides for potential cash bonus payments payable by EQT to the Company during the period beginning on the first day of the calendar quarter in which the MVP full in-service date occurs through the calendar quarter ending December 31, 2024 (the Henry Hub cash bonus payment provision). The potential cash bonus payments are conditioned upon the quarterly average of certain Henry Hub natural gas prices exceeding certain price thresholds.

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Under the EQT Global GGA, the performance obligation is to provide daily MVC capacity and as such the total consideration is allocated proportionally to the daily MVC over the life of the contract. In periods that the gathering MVC revenue billed will exceed the allocated consideration, the excess will be deferred to the contract liability and recognized in revenue when the performance obligation has been satisfied. While the 3.0 Bcf per day MVC capacity became effective on April 1, 2020, additional daily MVC capacity and the associated gathering MVC fees payable by EQT to the Company as set forth in the EQT Global GGA are conditioned upon the full in-service date of the MVP. The performance obligation, the allocation of the total consideration over the life of the contract and the gathering MVC fees payable by EQT under the contract have been in the past, and in the future could be, affected by changes in the potential timing of the full in-service date of the MVP.

Under the EQT Global GGA, the gathering MVC fees periodically decline through January 1, 2028 (with the fees then remaining fixed throughout the remaining term), even if MVP would not achieve full in-service. Before January 1, 2026, beginning the first day of the quarter in which the full in-service date of the MVP occurs under the EQT Global GGA, the gathering MVC fees payable by EQT to the Company are subject to more significant potential declines for certain contract years as set forth in the EQT Global GGA, which, prior to EQT's exercise of the EQT Cash Option (defined below), provided for estimated aggregate fee relief of up to approximately $270 million in the first twelve-month period, up to approximately $230 million in the second twelve-month period and up to approximately $35 million in the third twelve-month period. Given that the MVP full in-service date did not occur by January 1, 2022, on July 8, 2022, EQT irrevocably elected under the EQT Global GGA to forgo up to approximately $145 million of the potential gathering MVC fee relief in such first twelve-month period and up to approximately $90 million of the potential gathering MVC fee relief in such second twelve-month period in exchange for a cash payment from the Company to EQT in the amount of approximately $195.8 million (the EQT Cash Option). As a result of EQT exercising the EQT Cash Option (and payment by the Company thereof), the maximum aggregate potential fee relief applicable under the EQT Global GGA in such first twelve-month period and such second twelve-month period was reduced to be up to approximately $125 million and $140 million, respectively. Additionally, the EQT Global GGA provides for a fee credit to the gathering rate for certain gathered volumes that also receive separate transmission services under certain transmission contracts.

Based on the Henry Hub natural gas forward strip prices as of July 28, 2023 and the terms of the Henry Hub cash bonus payment provision, any further delays in the full in-service date for the MVP project and, if applicable, corresponding changes to probability-weighted assumptions regarding the project completion could decrease the estimated fair value of the derivative asset attributable to the Henry Hub cash bonus payment provision, and such decrease may be substantial and ultimately be reduced to zero. For a discussion of the potential effect of hypothetical changes to the NYMEX Henry Hub natural gas future prices on the estimated fair value of the derivative asset attributable to the Henry Hub cash bonus payment provision, see "Commodity Price Risk" in Part I, "Item 3. Quantitative and Qualitative Disclosures About Market Risk" of this Quarterly Report on Form 10-Q. Changes in estimated fair value are recognized in other income, net, on the Company’s statements of consolidated comprehensive income.

2021 Water Services Agreement. On October 22, 2021, the Company and EQT entered into a new 10-year, mixed-use water services agreement covering operations within a dedicated area in southwestern Pennsylvania. The 2021 Water Services

Agreement became effective on March 1, 2022. Pursuant to the 2021 Water Services Agreement, EQT has agreed to pay the Company a minimum ARC for water services equal to $40 million in each of the first five years of the 10-year contract term and equal to $35 million per year for the remaining five years of the contract term.

For a discussion of the Company's commercial relationship with EQT and related considerations, including risk factors, see Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. For further discussion on litigation and regulatory challenges affecting the MVP project, along with construction risks, see "Outlook" above and Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q, as applicable.

Potential Future Impairments. The accounting estimates related to impairments are susceptible to change, including estimating fair value which requires considerable judgment. For goodwill, management’s estimate of a reporting unit’s future financial results is sensitive to changes in assumptions, such as changes in stock prices, weighted-average cost of capital, terminal growth rates and industry multiples. Similarly, cash flow estimates utilized for purposes of evaluating long-lived assets and equity method investment (such as in the MVP Joint Venture) require the Company to make projections and assumptions for many years into the future for pricing, demand, competition, operating costs, commencement (or recommencement, as applicable) of operations and timing thereof (if at all), resolution of relevant legal and regulatory matters, and other factors. The Company evaluates long-lived assets and equity method investments for impairment when events or changes in circumstances indicate, in management’s judgment, that the carrying value of such assets may not be recoverable (meaning, in the case of its equity method investment, that such investment has suffered other-than-temporary declines in value under ASC 323). The Company believes the estimates and assumptions used in estimating its reporting units’, its long-lived assets' and its equity method investment's fair values are reasonable and appropriate as of June 30, 2023; however, assumptions and estimates are inherently subject to significant business, economic, competitive, regulatory, judicial and other risks that could materially affect the

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calculated fair values and the resulting conclusions regarding impairments, which could materially affect the Company’s results of operations and financial position. Additionally, actual results could differ from these estimates and assumptions may not be realized. When estimating the fair value of its equity method investment, the Company utilizes an income approach under which significant judgments and assumptions, including the discount rate and probability-weighted scenarios, are sensitive to change. The Company also continues to evaluate and monitor the ongoing legal and regulatory matters affecting the MVP project, as further described in Part II, “Item 1. Legal Proceedings” of this Quarterly Report on Form 10-Q, and the MVP Southgate project. Future delayed developments with respect to such matters or other adverse developments, as well as potential macroeconomic factors, including other than temporary market fluctuations, changes in interest rates, cost increases and other unanticipated events, could require that the Company further modify assumptions reflected in the probability-weighted scenarios of discounted future net cash flows (including with respect to the probability of success) utilized to estimate the fair value of its equity method investment in the MVP Joint Venture, which could result in an other-than-temporary decline in value, resulting in an incremental impairment of that investment. While macroeconomic factors in and of themselves may not be a direct indicator of impairment, should an impairment indicator be identified in the future, macroeconomic factors such as changes in interest rates could ultimately impact the size and scope of any potential impairment. The Company cannot predict the likelihood or magnitude of any future impairment. See “Impairments of our assets, including property, plant, and equipment, intangible assets, goodwill and our equity method investment in the MVP Joint Venture, previously have significantly reduced our earnings, and additional impairments could further reduce our earnings.” included in Part I, “Item 1A. Risk Factors" and the Company's discussion of "Critical Accounting Estimates" included in "Outlook" in Part II, "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations," each in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

For a discussion of capital expenditures, see "Capital Requirements" under "Capital Resources and Liquidity" below.

Capital Resources and Liquidity

The Company's liquidity requirements are to finance its operations, its capital expenditures, potential acquisitions and other strategic transactions and capital contributions to joint ventures, including the MVP Joint Venture, to pay cash dividends and distributions, when declared, and to satisfy any indebtedness obligations. Additionally, the Company or its affiliates may, at any time and from time to time, seek to retire or purchase outstanding debt through cash purchases and/or exchanges for equity or debt, in open-market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will be upon such terms and at such prices as the Company may determine, and will depend on prevailing market conditions, the Company's other liquidity requirements, contractual restrictions and other factors and the amounts involved may be material. The Company's ability to meet these liquidity requirements depends on the Company's cash flow from operations, the continued ability of the Company to borrow under its subsidiaries' credit facilities and the Company's ability to raise capital in banking and capital markets. We believe that our cash on hand and future cash generated from operations, together with available borrowing capacity under our subsidiaries' credit facilities and our access to banking and capital markets, will provide adequate resources to fund our short-term and long-term capital, operating and financing needs. However, cash flow and capital raising activities may be affected by prevailing economic conditions in the natural gas industry and other financial and business factors, including factors discussed in Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022 (such as those market forces discussed in “Our business is subject to climate change-related transitional risks (including evolving climate-focused regulation and climate change-driven trends emphasizing financing non-fossil fuel businesses and prompting pursuit of emissions reductions, lower-carbon technologies and alternative forms of energy) and physical risks that could significantly increase our operating expenses and capital costs, adversely affect our customers’ development plans, and reduce demand for our products and services."), some of which are beyond the Company's control. The Company's available sources of liquidity include cash from operations, cash on hand, borrowings under its subsidiaries' revolving credit facilities, issuances of additional debt and issuances of additional equity securities. As of June 30, 2023, pursuant to the terms of the Amended EQM Credit Facility, EQM had the ability to borrow approximately $0.6 billion under the Amended EQM Credit Facility. The amount the Company is able to borrow under the Amended EQM Credit Facility is bounded by a maximum consolidated leverage ratio. See Note 6 for further information regarding the Amended EQM Credit Facility. See also "Our subsidiaries’ significant indebtedness, and any future indebtedness, as well as the restrictions under our subsidiaries’ debt agreements, could adversely affect our operating flexibility, business, financial condition, results of operations, liquidity and ability to pay dividends to our shareholders." included in Part I, "Item 1A. Risk Factors" of the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

See “Security Ratings” below for a discussion of EQM’s credit ratings during 2023. Based on EQM's credit rating levels, EQM has delivered credit support to the MVP Joint Venture in the form of a letter of credit, which is for the MVP project, and was in the amount of approximately $219.7 million as of June 30, 2023, which is subject to adjustment based on the applicable construction budget. See Note 4 for further information. See "A further downgrade of EQM’s credit ratings, which are determined by independent third parties, could impact our liquidity, access to capital, and costs of doing business." included in Part I, "Item 1A. Risk Factors" in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022.

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The following table is a summary of the cash flows by activity for the six months ended June 30, 2023 and 2022, respectively.

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Cash flows
Net cash provided by operating activities	$	523,274	$	536,972
Net cash used in investing activities	(239,595)		(272,170)
Net cash used in financing activities	(244,505)		(284,942)
Net increase (decrease) in cash and cash equivalents	$	39,174	$	(20,140)

Operating Activities

Net cash flows provided by operating activities decreased approximately $13.7 million for the six months ended June 30, 2023 as compared to the six months ended June 30, 2022. The decrease was primarily driven by higher interest payments and the timing of other working capital receipts and payments.

Investing Activities

Net cash flows used in investing activities decreased by approximately $32.6 million for the six months ended June 30, 2023 as compared to the six months ended June 30, 2022. The decrease was primarily due to a decrease in capital contributions to the MVP Joint Venture, partially offset by an increase in capital expenditures spending on various wellhead gathering and transmission expansion projects. As construction of the MVP project recommences, through completion of the project, the Company expects higher investing cash outflows as a result of higher increased capital contributions to the MVP Joint Venture. See “Capital Requirements” below for a discussion of forecasted 2023 capital expenditures and capital contributions to the MVP Joint Venture.

Financing Activities

Net cash flows used in financing activities decreased by $40.4 million for the six months ended June 30, 2023 as compared to the six months ended June 30, 2022. For the six months ended June 30, 2023, the primary uses of financing cash flows were the payments of dividends to shareholders, repayments on borrowings under the revolving credit facilities, the redemption of the 2023 Notes and distributions paid to noncontrolling interest, while the primary source of financing cash flows were borrowings under the revolving credit facilities. For the six months ended June 30, 2022, the primary uses of financing cash flows were the purchase of certain tranches of EQM's outstanding long-term indebtedness pursuant to the 2022 Tender Offers and an open market purchase, repayments on borrowings under the revolving credit facilities, and the payments of dividends to shareholders, while the primary source of financing cash flows were the issuance of the 2022 Senior Notes and borrowings under the revolving credit facilities. As construction of the MVP project recommences, through the completion of the project, the Company expects higher financing cash flows as a result of higher borrowings under its Amended EQM Credit Facility.

Capital Requirements

The gathering, transmission and storage and water services businesses are capital intensive, requiring significant investment to develop new facilities and to maintain and upgrade existing operations.

Capital expenditures in 2023 are expected to be approximately $380 million to $430 million (including approximately $15 million attributable to the noncontrolling interest in Eureka Midstream). The Company expects to make total capital contributions to the MVP Joint Venture in 2023 of approximately $610 million to $650 million primarily related to forward construction of the MVP project. Capital contributions payable to the MVP Joint Venture are accrued upon the issuance of a capital call by the MVP Joint Venture. The Company's short-term and long-term capital investments may vary significantly from period to period based on the available investment opportunities, the timing of the construction of the MVP and other projects, and maintenance needs. The Company expects to fund short-term and long-term capital expenditures and capital contributions primarily through cash on hand, cash generated from operations, available borrowings under its subsidiaries' credit facilities and its access to banking and capital markets.

Credit Facility Borrowings

See Note 6 for a discussion of the Amended EQM Credit Facility and the 2021 Eureka Credit Facility.

Security Ratings

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The table below sets forth the credit ratings for EQM's debt instruments at June 30, 2023.

	EQM Senior Notes
Rating Service	Rating	Outlook
Moody's	Ba3	Stable
S&P	BB-	Negative
Fitch	BB	N/A

On June 6, 2023, Fitch placed EQM's credit rating on Rating Watch Positive following the signing of the Fiscal Responsibility Act of 2023. Prior to this action, EQM's credit rating was BB with a negative outlook from Fitch. EQM's credit ratings are subject to revision or withdrawal at any time by the assigning rating organization, and each rating should be evaluated independently of any other rating. The Company cannot ensure that a rating will remain in effect for any given period of time or that a rating will not be lowered or withdrawn entirely by a credit rating agency if, in its judgment, circumstances so warrant. If any credit rating agency downgrades or withdraws EQM's ratings, including for reasons relating to the MVP project (such as delays affecting the MVP project or increases in such project’s targeted costs), EQM’s leverage or credit ratings of the Company's customers, the Company's access to the capital markets could become more challenging, borrowing costs will likely increase, the Company may, depending on contractual provisions in effect at such time, be required to provide additional credit assurances (the amount of which may be substantial) and the potential pool of investors and funding sources may decrease. In order to be considered investment grade, a company must be rated Baa3 or higher by Moody's, BBB- or higher by S&P, or BBB- or higher by Fitch. All of EQM's credit ratings are considered non-investment grade.

Commitments and Contingencies

From time to time, various legal and regulatory claims and proceedings are pending or threatened against the Company and its subsidiaries. While the amounts claimed may be substantial, the Company is unable to predict with certainty the ultimate outcome of such claims and proceedings. The Company accrues legal and other direct costs related to loss contingencies when incurred. The Company establishes reserves whenever it believes it to be appropriate for pending matters. Furthermore, after consultation with counsel and considering the availability, if any, of insurance, the Company believes, although no assurance can be given, that the ultimate outcome of any matter currently pending against it or any of its consolidated subsidiaries will not materially adversely affect its business, financial condition, results of operations, liquidity or ability to pay dividends to its shareholders.

See "The regulatory approval process for the construction of new midstream assets is very challenging, has significantly increased costs and delayed then-targeted in-service dates, and decisions by regulatory and judicial authorities in pending or potential proceedings, particularly with respect to litigation in the Fourth Circuit regarding MVP, are likely to impact our or the MVP Joint Venture's ability to obtain or maintain in effect all approvals and authorizations necessary to complete certain projects in a timely manner or at all or our ability to achieve the expected investment returns on the projects." and "The November 2022 incident involving the venting of natural gas from a well at Equitrans, L.P.'s Rager Mountain natural gas storage facility required that we incur costs and expenses to halt such venting, and investigate and respond to the incident, including undertaking ongoing reviews of other storage assets. Activities and investigations responsive to the incident are ongoing, and, consequently, we are incurring and in the future we expect to incur further costs and expenses, whether resulting from or arising out of the incident, which could, depending on their scope and timing, materially adversely affect our business, financial condition, results of operations, liquidity and ability to pay dividends to our shareholders." included in Part I, "Item 1A. Risk Factors" of the Company's Annual Report on Form 10-K for the year ended December 31, 2022. See also Part II, "Item 1. Legal Proceedings" of this Quarterly Report on Form 10-Q for a discussion of certain litigation and regulatory proceedings, including related to the MVP project and the Rager Mountain natural gas storage field incident.

See Note 15 to the consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2022 for further discussion of the Company's commitments and contingencies.

Dividends

On July 26, 2023, the Company's Board of Directors declared cash dividends for the second quarter of 2023 of $0.15 per common share and $0.4873 per Equitrans Midstream Preferred Share to shareholders of record at the close of business on August 4, 2023.

Critical Accounting Estimates

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The Company's critical accounting policies are described in Part II, "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2022. Any new accounting policies or updates to existing accounting policies as a result of new accounting pronouncements have been included in the notes to the Company's consolidated financial statements in Part I, "Item 1. Financial Statements" of this Quarterly Report on Form 10-Q. Preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts in the Company's consolidated financial statements and accompanying notes. The Company's critical accounting policies are considered critical due to the significant judgments and estimates used in the preparation of the Company's consolidated financial statements and the material impact on the results of operations or financial condition. Actual results could differ from those judgments and estimates.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Except for the Interest Rate Risk and Commodity Price Risk described below, information about market risks for the six months ended June 30, 2023, does not differ materially from that discussed under Part II, "Item 7A." of the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Interest Rate Risk. Changes in interest rates affect the amount of interest the Company earns on cash, cash equivalents and short-term investments and the interest rates EQM and Eureka pay on borrowings under their respective revolving credit facilities. The Amended EQM Credit Facility and the 2021 Eureka Credit Facility provide for variable interest rates and thus expose the Company, through EQM and Eureka, to fluctuations in market interest rates. In addition, EQM's interest rates under the Amended EQM Credit Facility are impacted by changes in EQM's credit ratings (which changes may be caused by factors outside of EQM's control). Eureka's interest rates under the 2021 Eureka Credit Facility are impacted by changes in Eureka's Consolidated Leverage Ratio (as defined in the 2021 Eureka Credit Facility) which may fluctuate based on Eureka Midstream's distributions to its members, liquidity needs or operating results. Accordingly, if interest rates were to increase, our debt service obligations on the variable rate indebtedness would increase even though the amount borrowed remained the same, and our net income and cash flows, including cash available for servicing our indebtedness, will correspondingly decrease. Based on commitments as of the Earlier Maturity Date (as defined in Note 6) and assuming all loans are fully drawn, each quarter point change in interest rates would result in a change of approximately $5.4 million in annual interest expense on indebtedness under the Amended EQM Credit Facility. Assuming all loans are fully drawn, each quarter point change in interest rates would result in a change of approximately $1.0 million in annual interest expense on indebtedness under the 2021 Eureka Credit Facility. Further, regarding the dividend payable on Equitrans Midstream Preferred Shares after March 31, 2024, in accordance with the Adjustable Interest Rate (LIBOR) Act (the LIBOR Act), and the rules implementing the LIBOR Act, three-month CME Term SOFR, administered by CME Group Benchmark Administration, Ltd., plus a tenor spread adjustment of 0.26161% per annum, replaced, by operation of law, the three-month London Interbank Offered Rate (LIBOR) to calculate dividends payable on the Series A Preferred Stock for each fiscal quarter ending after March 31, 2024. Fluctuations in three-month CME Term SOFR may affect such dividend (which will not be less than 10.50% under the Company's Second Amended and Restated Articles of Incorporation), which could affect, among other things, the amount of cash the Company has available to make quarterly cash dividends to its shareholders. EQM's senior notes are fixed rate and thus do not expose the Company to fluctuations in market interest rates. Changes in interest rates do affect the fair value of EQM's fixed rate debt. See Note 6 and 7 to the consolidated financial statements for discussions of borrowings and fair value measurements, respectively. EQM and Eureka may from time to time hedge the interest on portions of borrowings under the revolving credit facilities, as applicable, in order to manage risks associated with floating interest rates. However, the Company may not maintain hedges with respect to all of its variable rate indebtedness, and any hedges it enters into may not fully mitigate its interest rate risk.

Commodity Price Risk. The Company's business is dependent on continued natural gas production and the availability and development of reserves in its areas of operation. Prices for natural gas and NGLs, including regional basis differentials, have previously adversely affected, and may in the future adversely affect, timing of development of additional reserves and production that is accessible by the Company’s pipeline and storage assets, which also negatively affects the Company’s water services business, and the creditworthiness of the Company’s customers.

As of July 28, 2023, the natural gas forward price strip reflected significantly lower Henry Hub and Appalachian Basin natural gas prices for the remainder of 2023 relative to prices in the fourth quarter of 2022. Lower natural gas prices, particularly in the Appalachian region, have in the past caused, and may in the future cause, producers such as EQT to determine to take actions to slow production growth and/or maintain flat or reduce production, which when effected by our producer customers limits growth in or reduces the demand for, and usage of, our services. For instance, in certain periods of low natural gas prices prior to 2023, temporary production curtailments resulted in a decrease in our volumetric-based gathering fee revenues. Based on such forward price strip, the Company perceives risk that EQT and/or other producers could curtail production in 2023, which, depending on the nature and duration of any such curtailment, could have a significant negative effect on the demand for our services, our volumetric-based fee revenue, and therefore our results of operations. See also “Decreases or a lack of growth in production of natural gas in our areas of operation, whether as a result of regional takeaway constraints, producer

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corporate capital allocation strategies, lower regional natural gas prices, natural well decline, and/or other factors, have adversely affected, and in the future could adversely affect, our business and operating results and reduce our cash available to pay cash dividends to our shareholders.”, "The lack of diversification of our assets and geographic locations could adversely affect us." and “We generate a substantial majority of our revenues from EQT. Therefore, we are subject to the business and liquidity risks of EQT, and any decrease in EQT's drilling or completion activity (or significant production curtailments) or a shift in such activity away from our assets could adversely affect our business and operating results. Various factors have affected and may further affect our ability to realize the benefits associated with the EQT Global GGA at the time of its execution.”, each included in Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Price declines and sustained periods of low natural gas and NGL prices could have an adverse effect on the creditworthiness of the Company's customers and related ability to pay firm reservation fees under long-term contracts and/or affect, as discussed above, activity levels and, accordingly, volumetric-based fees, which could affect the Company’s results of operations, liquidity or financial position. Credit risk and related management is further discussed under “Credit Risk” in Part II, “Item 7A. Quantitative and Qualitative Disclosures About Market Risk” in the Company's Annual Report on Form 10-K.

Increases in natural gas prices do not necessarily result in corresponding increases to the production forecasts of the Company's customers. Even when natural gas prices have been commercially attractive, certain of the Company's customers maintained largely flat production forecasts in light of, among other things, the absence of incremental takeaway capacity from the Appalachian Basin and the Company's customers may still maintain flat or modest increases to production forecasts based on various factors, which could include regional takeaway capacity limitations, access to capital, investor expectations regarding free cash flow, a desire to reduce or refinance leverage or other factors.

Additionally, lower natural gas prices (including regionally), corporate capital allocation strategies or regional takeaway constraints, could cause producers to determine in the future that drilling activities in areas outside of the Company's current areas of operation are strategically more attractive to them.

Many of the Company’s customers, including EQT, have entered into long-term firm reservation gathering, transmission and water services contracts or contracts with MVCs or ARCs, as applicable, on the Company's systems and approximately 70% of the Company's operating revenues for the six months ended June 30, 2023 was generated by firm reservation fee revenues. The Company believes that such contract structure is advantageous to its overall business, although significant declines in gas production in the Company's areas of operations would likely adversely affect the Company's results of operations, financial condition and liquidity as approximately 30% of the Company’s operating revenues for the six months ended June 30, 2023 was generated by volumetric-based fee revenues. See "Our exposure to direct commodity price risk may increase in the future and NYMEX Henry Hub futures prices affect the fair value, and may affect the realizability, of potential cash payments to us by EQT pursuant to the EQT Global GGA." and “We generate a substantial majority of our revenues from EQT. Therefore, we are subject to business and liquidity risks of EQT, and any decrease in EQT’s drilling or completion activity (or significant production curtailments) or a shift in such activity away from our assets could adversely affect our business and operating results. Various factors have affected and may further affect our ability to realize the benefits associated with the EQT Global GGA at the time of its execution." included in Part I, "Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Unless the Company is successful in attracting and retaining new customers, the Company's ability to maintain or increase the capacity subscribed and volumes transported, gathered or provided on its systems above MVC levels will be dependent on receiving consistent or increasing commitments and production from its existing customers, which may be impacted by regional takeaway capacity limitations, commodity prices, including regional commodity prices and/or other factors, including corporate capital allocation strategies. While EQT has dedicated a substantial portion of its core acreage in southwestern Pennsylvania and West Virginia to the Company and has entered into long-term firm gathering and transmission contracts and contracts with MVCs on certain of the Company's systems, EQT may determine in the future that drilling or continuing to produce gas from existing wells in the Company's areas of operations is not economical above the amount to fulfill its required MVCs or otherwise strategically determine to curtail volumes on the Company's systems. Other than with respect to its MVCs and other firm commitments under existing contracts, EQT is under no contractual obligation to continue to develop its acreage dedicated to the Company. See also "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q for a discussion of the EQT Global GGA and the 2021 Water Services Agreement.

The fair value of the Company’s derivative instruments is, in part, determined by estimates of the NYMEX Henry Hub natural gas forward price curve. A hypothetical 10% increase in NYMEX Henry Hub natural gas futures prices would increase the valuation of the Company’s derivative instruments by approximately $3.7 million, while a hypothetical 10% decrease in NYMEX Henry Hub natural gas futures prices would decrease the valuation of the Company’s derivative instruments by

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approximately $4.3 million. This fair value change assumes volatility based on prevailing market parameters at June 30, 2023. See Note 7 and "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q for a discussion of the Henry Hub cash bonus payment provision.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures. Under the supervision and with the participation of management, including the Company’s Principal Executive Officer and Principal Financial Officer, an evaluation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) was conducted as of the end of the period covered by this report. Based on that evaluation, the Principal Executive Officer and Principal Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting. There were no changes in the Company's internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) that occurred during the second quarter of 2023 that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

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PART II.  OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, various legal and regulatory claims and proceedings are pending or threatened against the Company and its subsidiaries. While the amounts claimed may be substantial, the Company is unable to predict with certainty the ultimate outcome of such claims and proceedings. The Company accrues legal and other direct costs related to loss contingencies when incurred. The Company establishes reserves whenever it believes it to be appropriate for pending matters. Furthermore, after consultation with counsel and considering the availability, if any, of insurance, the Company believes, although no assurance can be given, that the ultimate outcome of any matter currently pending against it or any of its consolidated subsidiaries will not materially adversely affect its business, financial condition, results of operations, liquidity or ability to pay dividends to its shareholders.

Environmental Proceedings

Rager Mountain Storage Field. On November 6, 2022, the Company became aware of natural gas venting from one of the storage wells, well 2244, at Equitrans, L.P.’s Rager Mountain natural gas storage facility (Rager Mountain facility), located in Jackson Township, a remote section of Cambria County, Pennsylvania. The venting of natural gas from well 2244 was halted on November 19, 2022. The Pennsylvania Department of Environmental Protection (PADEP), the United States Pipeline and Hazardous Materials Safety Administration (PHMSA) and other investigators are continuing to conduct civil and criminal investigations of the incident and the Company is cooperating in such investigations. On December 7, 2022, the Company and its subsidiary Equitrans, L.P. each separately received an order from the PADEP alleging, in connection with earth disturbance activities undertaken to halt the venting of natural gas from well 2244, (i) in the case of the order received by the Company, violations of Pennsylvania’s Clean Streams Law and requiring certain remedial actions and (ii) in the case of the order received by Equitrans, L.P., violations of Pennsylvania’s 2012 Oil and Gas Act, Clean Streams Law and Solid Waste Management Act and requiring certain remedial actions. On December 8, 2022, the PADEP submitted a compliance order to Equitrans, L.P. relating to certain alleged violations of law in respect of wells at the Rager Mountain natural gas storage field and the venting of natural gas, including from well 2244. The December 8, 2022 order also prohibited Equitrans, L.P. from injecting natural gas into the storage wells at the Rager Mountain facility. The Company and Equitrans, L.P. disputed aspects of the applicable orders, and on January 5, 2023, the Company and Equitrans, L.P., as applicable, appealed each of the orders to the Commonwealth of Pennsylvania Environmental Hearing Board. Additionally, the Company and Equitrans, L.P., as applicable, have received, and may continue to receive, notices of violation (NOVs) related to the incident which allege violations of various Pennsylvania statutes and regulations. Equitrans, L.P. and the PADEP entered into a Stipulation of Settlement on April 12, 2023 that, among other things, resulted in the PADEP rescinding its December 8, 2022 order and Equitrans, L.P. withdrawing its appeal of such order. Equitrans, L.P.’s and the Company's appeals of the December 7, 2022 orders remain pending and negotiations regarding a potential Consent Order with respect to the NOVs remain ongoing.

On December 29, 2022, the PHMSA issued the Company a Notice of Proposed Safety Order that included proposed remedial requirements related to the Rager Mountain natural gas storage field incident, including, but not limited to, completing a root cause analysis. The Company began addressing certain proposals in advance of an order from the agency. These efforts included conducting testing, evaluating other wells at the Rager field and hiring a third-party specialist firm to undertake a root cause analysis. On May 26, 2023, the PHMSA issued a consent order to the Company, which, among other things, requires the completion of a root cause analysis and a remedial work plan, and specifies that the Company may not resume injection operations at the Rager Mountain facility until authorized by the PHMSA.

If penalties are pursued and ultimately imposed related to the Rager Mountain incident, the penalties are expected to result in monetary sanctions in excess of $300,000. While the Company does not believe that penalties, if imposed, would have a material adverse impact on the Company's financial condition, results of operations or liquidity, there can be no assurance as of the filing of this Quarterly Report on Form 10-Q regarding the scope of potential (or ultimately actual) financial or other impacts to the Company as a result of the Rager Mountain incident.

MVP Matters

The MVP Joint Venture is currently defending certain agency actions and judicial challenges to the MVP, the outcome of which could have adverse effects with respect to the project and consequently the Company, including the following:

•Sierra Club, et al. Petitioners v. West Virginia Department of Environmental Protection, et al. Respondents and Mountain Valley Pipeline, Intervenor, Docket No. 22-1008, Fourth Circuit. On December 30, 2021, the West Virginia Department of Environmental Protection (WVDEP) certified that the MVP project would satisfy West Virginia’s water quality standards based on its comprehensive nine-month review of the MVP Joint Venture’s Joint Permit Application (WV 401 Permit). On January 3, 2022, the petitioners filed their petition challenging the WVDEP’s

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approval of the WV 401 Permit with the Fourth Circuit. On January 4, 2022, the petitioners filed a request for an administrative stay with the WVDEP which was denied on January 11, 2022. On January 11, 2022, the petitioners filed a petition with the Fourth Circuit seeking a judicial stay of the WV 401 Permit pending a decision on the merits. The stay petition was denied by the Fourth Circuit on February 8, 2022. On May 16, 2022, the MVP Joint Venture filed a motion for random panel assignment with the Fourth Circuit, which motion was denied on June 22, 2022. Briefing was completed and oral argument before the Fourth Circuit occurred on October 25, 2022. On April 3, 2023, agreeing in part with the petitioners, the Fourth Circuit vacated the WV 401 permit, finding deficiencies in the WVDEP’s conclusion that MVP’s activities during the pipeline’s construction would not violate the state’s water quality standards. On June 8, 2023, the WVDEP issued a new 401 permit for the MVP project.

•Jefferson National Forest Crossing and Associated Authorizations. In a different Fourth Circuit appeal, Sierra Club, et al. v. U.S. Forest Service, et al., consolidated under Case No. 17-2399, Fourth Circuit, filed in December 2017, the Sierra Club challenged a BLM decision to grant a right-of-way to the MVP Joint Venture and a USFS decision to amend its management plan to accommodate the MVP, both of which affect the MVP's approximate 3.5-mile segment in the JNF in Virginia. On July 27, 2018, agreeing in part with the Sierra Club, the Fourth Circuit vacated the BLM and USFS decisions, finding fault with the BLM's analysis of the practicality of alternate routes and the USFS' analysis of erosion and sedimentation effects. On January 11, 2021, the MVP Joint Venture received final approval of the Record of Decision from the USFS and, on January 15, 2021, the BLM issued a new required right-of-way permit for the MVP’s 3.5-mile segment in the JNF in Virginia (2021 JNF Right-of-Way). On January 11, 2021, Sierra Club, et al. filed a petition with the Fourth Circuit to reverse the USFS approval of the Record of Decision and, on January 15, 2021, filed a petition with the Fourth Circuit challenging BLM’s grant of the 2021 JNF Right-of-Way. See Wild Virginia, et al. v. United States Forest Service, et al., No. 21-1039(L). On January 25, 2022, the Fourth Circuit, agreeing in part with the petitioners, vacated and remanded the Record of Decision and the 2021 JNF Right-of-Way, finding fault with (i) the USFS’ and BLM’s consideration of certain data from the U.S. Geological Survey and (ii) the USFS’ and BLM’s authorization of the use of conventional bores for stream crossings within the JNF based on a variance issued by the FERC, and, as a result of such issues, (iii) the USFS’ amendments in connection with the Record of Decision to the Jefferson Forest plan. On March 11, 2022, the MVP Joint Venture requested that the Fourth Circuit review the January 25, 2022 decision en banc, which rehearing was denied by the Fourth Circuit on March 25, 2022. The vacatur of the Record of Decision and the 2021 JNF Right-of-Way caused a delay in the then-targeted full in-service date for the MVP project (and consequent impacts relating to such delay). In May 2023, the MVP Joint Venture received a new Record of Decision from the USFS and was issued a new right-of-way permit by the BLM (2023 JNF Right-of-Way). On June 2, 2023, The Wilderness Society filed a petition with the Fourth Circuit to reverse the USFS’ approval of the new Record of Decision (No. 23-1592) and the BLM’s grant of the 2023 JNF Right-of-Way (No. 23-1594). See The Wilderness Society v. U.S. Forest Service, et al., consolidated under Case No. 23-1592, Fourth Circuit. Given provisions in the Fiscal Responsibility Act of 2023 discussed in “Mountain Valley Pipeline” in "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q divesting courts of jurisdiction to review agency actions on approvals necessary for MVP’s construction and initial operation, the MVP Joint Venture and the U.S. Department of Justice filed motions to dismiss the proceeding on June 5, 2023 and June 15, 2023, respectively. The Wilderness Society subsequently moved for a stay of the authorizations pending review and a temporary administrative stay of the authorizations on July 3, 2023 and July 6, 2023, respectively. On July 10, 2023, prior to receiving briefs from the U.S. Department of Justice and the MVP Joint Venture opposing the stay motion, the Fourth Circuit granted the stay pending review in a summary order. The MVP Joint Venture subsequently filed on July 14, 2023, an emergency application to vacate the stay with the U.S. Supreme Court. On July 27, 2023, the U.S. Supreme Court vacated the stay. Oral argument on the motion to dismiss was held on July 27, 2023 in the Fourth Circuit and the parties are awaiting a decision. If the motion to dismiss is not granted, it could result in additional proceedings, or otherwise have adverse effects.

On August 3, 2018, citing the court’s vacatur and remand in Sierra Club, et al. v. U.S. Forest Service, et al., consolidated under Case No. 17-2399, the FERC issued a stop work order for the entire pipeline pending the agency actions on remand. The FERC modified its stop work order on August 29, 2018 to allow work to continue on all but approximately 25 miles of the project (the Exclusion Zone) and made certain other limited modifications of the stop work order. On October 9, 2020, the FERC authorized construction to resume project-wide (as it had been stopped by the FERC on October 15, 2019 in relation to a separate matter), other than with respect to the Exclusion Zone, which required additional authorization. On December 17, 2020, the FERC again modified the stop work order and authorized construction to resume in 17 miles of the Exclusion Zone. The FERC’s October 9, 2020 and December 17, 2020 actions are the subject of challenges filed by the Sierra Club in Sierra Club, et al. v. FERC, Case No. 20-1512 (consolidated with No. 21-1040), D.C. Circuit Court of Appeals on December 22, 2020 and January 25, 2021, respectively. Briefing in Sierra Club, et al. v. FERC, Case No. 20-1512 (consolidated with No. 21-1040), D.C. Circuit

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Court of Appeals resulted in the DC Circuit issuing a decision on May 26, 2023, rejecting all of the petitioners’ challenges except one and remanding without vacatur the October and December 2020 FERC orders on the basis of the FERC inadequately having explained whether a supplemental environmental impact statement under NEPA was necessary before allowing construction to resume pursuant to the orders. Given the absence of vacatur, the orders remain valid and in effect during the FERC’s proceedings on remand. On June 28, 2023, the FERC authorized the MVP Joint Venture to resume all construction activities in all MVP project locations, including the remaining portion of the Exclusion Zone, and addressed the remand in light of the Fiscal Responsibility Act of 2023 and stated, “we find that no further action in response to the remand is necessary and none will be forthcoming.” Given provisions in the Fiscal Responsibility Act of 2023 discussed in "Mountain Valley Pipeline" in "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q, on July 31, 2023, the FERC filed a motion to dismiss Case No. 20-1512 (consolidated with No. 21-1040). If the motion to dismiss is not granted, it could result in additional proceedings, cause a delay or further delay in the full in-service date for the MVP Project, or otherwise have adverse effects.

Challenges to FERC Certificate, U.S. Court of Appeals for District of Columbia Circuit (DC Circuit). Multiple parties have sought judicial review of the FERC’s order issuing a certificate of public convenience and necessity to the MVP Joint Venture and/or the exercise by the MVP Joint Venture of eminent domain authority. On February 19, 2019, the DC Circuit issued an order rejecting multiple consolidated petitions seeking direct review of the FERC order under the Natural Gas Act of 1938, as amended (NGA) and certain challenges to the exercise by the MVP Joint Venture of eminent domain authority in Appalachian Voices, et al. v. FERC, et al., consolidated under Case No. 17-1271. No petitions for rehearing or petitions for rehearing en banc were filed by the April 5, 2019 deadline. The mandate was issued on April 17, 2019. Another group of parties filed a complaint in the U.S. District Court for the District of Columbia asserting that the FERC’s order issuing certificates is unlawful on constitutional and other grounds in Bold Alliance, et al. v. FERC, et al., Case No. 17-1822. The district court plaintiffs sought declaratory relief as well as an injunction preventing the MVP Joint Venture from developing its project or exercising eminent domain authority. In December 2017 and January 2018, the FERC and the MVP Joint Venture, respectively, moved to dismiss the petitions for lack of subject matter jurisdiction. The court granted the motion and dismissed plaintiffs’ complaint on September 28, 2018. On October 26, 2018, plaintiffs appealed the decision in Case No. 17-1822 to the DC Circuit in Bold Alliance, et al. v. FERC, et al., Case No. 18-5322. On December 3, 2018, the FERC, as appellee, filed a joint motion with the appellants to hold Case No. 18-5322 in abeyance pending completion of the appeals of the final agency orders related to the MVP certificate in consolidated Case No. 17-1271 and Atlantic Coast Pipeline’s (ACP) certificate. The MVP Joint Venture filed a motion to dismiss the case as to some of the plaintiffs. On February 15, 2019, the DC Circuit entered an order holding this appeal in abeyance pending rulings on the appeals from the ACP and MVP FERC proceedings. The ACP petitioners on November 16, 2022, filed a joint motion for voluntary dismissal of all petitions for review pertaining to ACP, except for the Bold Alliance proceeding. The court granted the motion on November 17, 2022. On January 5, 2023, the DC Circuit entered an order holding the Bold Alliance proceeding in abeyance pending further order of the court and requiring the parties to file motions to govern future proceedings within 60 days of the U.S. Supreme Court disposition of the petition for writ of certiorari in Bohon et al. v. FERC et al., discussed below. On June 26, 2023, the court entered an order continuing the abeyance of Bold Alliance until 30 days after the disposition of Case No. 20-5203, discussed below.

Similarly, another group of parties filed a complaint in the U.S. District Court for the District of Columbia in Bohon et al. v. FERC et al., Case No. 20-00006, asserting that the delegation of authority to the FERC under the NGA violates the nondelegation doctrine and separation-of-powers principle of the U.S. Constitution. The MVP Joint Venture and the FERC filed motions to dismiss which were granted by the court. On July 6, 2020, the landowners filed a notice of appeal to the DC Circuit in Case No. 20-5203. On November 30, 2020, appellants asked the DC Circuit to overturn the decision of the lower court. Oral argument before the DC Circuit was scheduled for March 29, 2021, but the court cancelled and held oral argument in abeyance and directed the parties to file motions to govern future proceedings following a decision by the U.S. Supreme Court in PennEast Pipeline Co. v. New Jersey, Case No. 19-1039, which decision was published on June 29, 2021. Briefing in Bohon et al. v. FERC et al., Case No. 20-00006 on the significance of the PennEast Pipeline Co. opinion was completed on July 29, 2021. The DC Circuit issued an order on September 15, 2021 denying appellants’ motion for summary reversal of the decision of the lower court and supplemental briefing was completed as of October 6, 2021. On June 21, 2022, the DC Circuit upheld the lower court’s decision to dismiss the lawsuit. On September 15, 2022, the petitioners filed a petition for writ of certiorari with the U.S. Supreme Court. The FERC and the MVP Joint Venture filed responses to the petition in November 2022. On April 24, 2023, the U.S. Supreme Court granted the petition for certiorari, vacated the judgment, and remanded the case to the D.C. Circuit for further consideration in light of the U.S. Supreme Court's April 14, 2023 opinion in Axon Enterprises, Inc. v. FTC. Supplemental briefing in the Bohon matter is scheduled to conclude on August 7, 2023.

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Due to the uncertainty regarding the timing of permitting and the outcome of legal challenges facing the MVP project, on August 25, 2020, the MVP Joint Venture filed a request with the FERC for and, on October 9, 2020, the FERC granted, an extension of time to complete the MVP project for an additional two years through October 13, 2022. On December 22, 2020, a challenge to the FERC’s action to grant an extension of time to complete the MVP project was filed in the DC Circuit in Sierra Club, et al. v. FERC, Case No. 20-1512 (consolidated with No. 21-1040, DC Circuit). Briefing in Sierra Club, et al. v. FERC, Case No. 20-1512 (consolidated with No. 21-1040, D.C. Circuit), was completed in January 2022 and oral argument occurred on April 7, 2022. On May 26, 2023, the DC Circuit held that the petitioners’ challenge to the October 9, 2020 extension order was moot. Separately, on June 24, 2022, citing litigation and regulatory matters, the MVP Joint Venture filed a request with the FERC for an extension of time to complete the MVP project through October 13, 2026, which was granted on August 23, 2022. Parties filed timely requests for rehearing with the FERC regarding such approval, which were denied by the FERC on October 24, 2022 and February 17, 2023. Parties also filed a petition for review of such approval with the DC Circuit on December 23, 2022 (Case No. 22-1330). On June 21, 2023, the FERC and the MVP Joint Venture filed motions to dismiss for lack of jurisdiction or, in the alternative, for summary denials of the consolidated petitions (Case Nos. 22-1330 and 23-1117). Petitioners on June 22, 2023 moved for voluntary dismissal of the consolidated petitions, which the MVP Joint Venture opposed. The parties are awaiting decisions on the respective motions. If any of these challenges were successful, it could result in the MVP Joint Venture’s certificate of public convenience and necessity being vacated and/or additional proceedings before the FERC, the outcome of which the Company cannot ensure, and cause a delay or further delay in the full in-service date for the MVP project (and consequent impacts related to such delay), or otherwise have adverse effects.

•Appalachian Voices, et al. v. U.S. Dep’t of Interior, et al., Fourth Circuit Court of Appeals, Case No. 20-2159. In August 2019, Wild Virginia and certain other petitioners filed a petition in the Fourth Circuit in Wild Virginia et al. v. United States Department of the Interior; Case No. 19-1866, to challenge the MVP Joint Venture’s Biological Opinion and Incidental Take Statement issued by FWS which was approved in November 2017 (the Original BiOp). On October 11, 2019, the Fourth Circuit issued an order approving the petitioners’ requested stay of the Original BiOp and holding the litigation in abeyance until January 11, 2020. On October 15, 2019, the FERC issued an order requiring the MVP Joint Venture to cease all forward-construction progress (the FERC modified this order on October 9, 2020 and December 17, 2020 and on June 28, 2023, the FERC issued an order authorizing all construction activities). On September 4, 2020, the FWS issued the MVP Joint Venture a new Biological Opinion and Incidental Take Statement (the 2020 BiOp) for the MVP project and the Fourth Circuit subsequently dismissed the litigation regarding the Original BiOp. On October 27, 2020, Appalachian Voices et al. filed a petition with the Fourth Circuit challenging the 2020 BiOp. On February 2, 2022, the Fourth Circuit vacated and remanded the 2020 BiOp holding, in part, that the FWS did not adequately analyze the environmental context for species at issue. On March 11, 2022, the MVP Joint Venture requested that the Fourth Circuit review the February 2, 2022 decision en banc, which rehearing was denied by the Fourth Circuit on April 1, 2022. The vacatur of the 2020 BiOp caused a delay in the then-targeted full in-service date for the MVP project (and consequent impacts relating to such delay). On February 28, 2023, the FWS issued a new Biological Opinion and Incidental Take Statement for the MVP project (the 2023 BiOp). The petitioners appealed the 2023 BiOp to the Fourth Circuit on April 10, 2023. See Appalachian Voices, et al. v. U.S. Dep’t of Interior, et al., Fourth Circuit Court of Appeals Case No. 23-1384. On April 24, 2023, the petitioners filed an administrative stay with the FWS, which stay request was denied on April 27, 2023. The petitioners filed a motion to stay the 2023 BiOp in the Fourth Circuit on April 27, 2023. On June 5, 2023, given provisions in the Fiscal Responsibility Act of 2023 discussed in “Mountain Valley Pipeline” in "Outlook" in Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Quarterly Report on Form 10-Q divesting courts of jurisdiction to review agency actions on approvals necessary for MVP’s construction and initial operation, the MVP Joint Venture and the U.S. Department of Justice filed motions to dismiss the proceeding on June 5, 2023 and June 15, 2023, respectively. On July 11, 2023, in a summary order, the Fourth Circuit granted the petitioners’ request for stay of the 2023 BiOp pending review. The MVP Joint Venture subsequently filed on July 14, 2023, an emergency application to vacate the stay with the U.S. Supreme Court. On July 27, 2023, the U.S. Supreme Court vacated the stay. Oral argument on the motion to dismiss was held on July 27, 2023 in the Fourth Circuit and the parties are awaiting a decision. If the motion to dismiss is not granted, it could result in additional proceedings, or otherwise have adverse effects.

Item 1A. Risk Factors

The Company is subject to a variety of significant risks in addition to the matters set forth under the forward-looking statements section in Part I, Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations," of this Quarterly Report on Form 10-Q. The Company has identified a number of these risk factors in Part I, Item 1A, "Risk Factors," in its Annual Report on Form 10-K for the year ended December 31, 2022, which risk factors, as modified by this Quarterly

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Report on Form 10-Q, are incorporated herein by reference. These risk factors should be considered carefully in evaluating the Company’s risk profile.

There have been no material changes from the risk factors previously disclosed in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of Equity Securities

The following table sets forth the Company's repurchases of equity securities registered under Section 12 of the Exchange Act that occurred during the three months ended June 30, 2023:

Period	Total number of shares purchased (a)	Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs	Approximate dollar value of shares that may yet be purchased under the plans or programs
April 2023 (April 1 - April 30)	—	$	—	—	$	—
May 2023 (May 1 - May 31)	—	—		—	—
June 2023 (June 1 - June 30)	—	—		—	—
Total	—	$	—	—	$	—

(a)Reflects shares withheld by the Company to pay taxes upon vesting of restricted stock.

Item 5. Other Information

During the three months ended June 30, 2023, no director or officer of the Company subject to Section 16 of the Exchange Act adopted, terminated or modified a ‘Rule 10b5-1 trading arrangement’ or ‘non-Rule 10b5-1 trading arrangement,’ as each term is defined in Item 408(a) of Regulation S-K.

On July 26, 2023, with the recommendation of the Compensation Committee, the Board approved an amendment to the MVP PSU Program to eliminate the expiration date of January 1, 2024 as a term of the MVP PSU Program and all award agreements thereunder and clarified the calculation of shares retained in the event of a participant’s termination due to death, disability or retirement. See Note 5 for further discussion of the amendment to the MVP PSU Program.

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Item 6. Exhibits

Exhibit No.	Document Description	Method of Filing
10.01#	Letter Agreement, dated as of June 1, 2023, by and among EQM Gathering Opco, LLC, EQT Corporation, EQT Production Company, Rice Drilling B LLC, and EQT Energy, LLC.	Filed herewith as Exhibit 10.01.
10.02*	Form of Equitrans Midstream Corporation Senior Executive 2021 MVP Performance Share Units Award Agreement Notice.	Filed herewith as Exhibit 10.02.
31.1	Rule 13(a)-14(a) Certification of Principal Executive Officer.	Filed herewith as Exhibit 31.1.
31.2	Rule 13(a)-14(a) Certification of Principal Financial Officer.	Filed herewith as Exhibit 31.2.
32	Section 1350 Certification of Principal Executive Officer and Principal Financial Officer.	Furnished herewith as Exhibit 32.
101	Inline Interactive Data File.	Filed herewith as Exhibit 101.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).	Filed herewith as Exhibit 104.

# Certain portions of the exhibits that are not material and is of the type Equitrans Midstream treats as confidential have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K. Copies of the unredacted exhibits will be furnished to the SEC upon request.

*Management contract and compensatory arrangement in which any named executives officer participates.

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Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Equitrans Midstream Corporation
(Registrant)
By:	/s/ Kirk R. Oliver
	Kirk R. Oliver
	Senior Vice President and Chief Financial Officer

Date:  August 1, 2023

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EX-10.01

Exhibit 10.01

SPECIFIC TERMS IN THIS LETTER AGREEMENT HAVE BEEN REDACTED BECAUSE SUCH TERMS ARE BOTH NOT MATERIAL AND ARE OF A TYPE THAT EQUITRANS MIDSTREAM CORPORATION TREATS AS CONFIDENTIAL. THESE REDACTED TERMS HAVE BEEN MARKED IN THIS EXHIBIT AT THE APPROPRIATE PLACE WITH THREE ASTERISKS [***].

June 1, 2023    

EQT Production Company

625 Liberty Avenue, Suite 1700

Pittsburgh, Pa 15222-3111

Attn: J.E.B. Bolen

RE:    Trust North Well Pad

Dear Mr. Bolen:

Reference is made to (A) that certain Gas Gathering and Compression Agreement dated as of February 26, 2020 by and among EQT Corporation, EQT Production Company (“EPC”), Rice Drilling B LLC (“RDB”), and EQT Energy, LLC (collectively, “Producer”), and EQM Gathering Opco, LLC (“Gatherer”), as the same was amended by that certain First Amendment to Gas Gathering and Compression Agreement dated August 26, 2020, that Second Amendment to Gas Gathering and Compression Agreement dated December 6, 2021 and that Third Amendment to Gas Gathering Compression Agreement dated December 21, 2021 and that Fourth Amendment to Gas Gathering Compression Agreement dated January 23, 2023 between Producer and Gatherer (as amended, the “Gathering Agreement”), and (B) that certain Water Services Agreement, dated effective as of October 22, 2021, by and between EPC, RDB and Equitrans Water Services (PA), LLC (“Equitrans Water” and together with Gatherer, the “Equitrans Parties”) as the same was amended by that First Amendment dated January 27, 2022 and that Second Amendment dated March 31, 2022 (as amended, the “Base WSA”). All capitalized terms used but not otherwise defined in this letter agreement (“Letter Agreement”) shall have the meanings (if any) ascribed to them in the Gathering Agreement and/or the Base WSA, as applicable.

WHEREAS, the Well Pad of Producer anticipated to be located in Greene County, Pennsylvania within the Daybreak System AMI as depicted on Exhibit A attached hereto and known as the Trust North Well Pad (“Trust Well Pad”) has an Anticipated Production Date of March 22, 2025 for purposes of the Gathering Agreement and an Anticipated Completion Date of April 12, 2024 for purposes of the Base WSA and ITC 1;

WHEREAS, the Trust Well Pad is an Initial Delivery Point under the Base WSA and ITC 1 and an Additional Confirmation Notice related to the Trust Well Pad has been delivered by Producer to Equitrans Water in accordance with Section 3.4 of the Base WSA;

WHEREAS, the Connection Notice Information for the Additional Receipt Point at the Trust Well Pad contemplates that such Additional Receipt Point meets the Additional Connection Criteria and, pursuant and subject to the terms of the Gathering

Agreement, Gatherer is obligated to connect such Additional Receipt Point to the Gathering System; and

WHEREAS, Producer is willing to: (a) construct and install a 12 inch diameter steel gathering pipeline segment approximately 1,200 feet in length extending from the location of the Receipt Point on the Trust Well Pad to the end of the well pad access road near the proposed launcher area as depicted on Exhibit A attached hereto; (b) construct and install an 18 inch diameter High Density Polyethylene (HDPE) water pipeline segment approximately 1,200 feet in length extending from the location of the Receipt Point on the Trust Well Pad to the end of the well pad access road near the proposed launcher area as depicted on Exhibit A attached hereto; (c) construct and install fiber optic cable approximately 1,200 feet in length extending from the location of the Receipt Point on the Trust Well Pad to the end of the well pad access road near the proposed launcher area as depicted on Exhibit A attached hereto; and (d) open cut the well pad access road and (following the installation of the gathering pipeline segment, water pipeline segment and fiber optic cable) back fill the open cut trench with flowable fill approximately 2,400 feet in length (the facilities described in clauses (a) through (d) collectively, the “Trust Facilities”), subject to the terms and conditions hereof.

NOW, THEREFORE, Gatherer, Equitrans Water and Producer (collectively, “Parties” and each a “Party”), by execution of this Letter Agreement and in consideration of the mutual covenants contained herein, do hereby agree as follows:

1.Trust Facilities; Installation Work; Materials.

(a)Subject to the terms and conditions of this Letter Agreement, Producer covenants and agrees to perform, or cause to be performed, the design, construction, installation, inspection and testing of the Trust Facilities (“Installation Work”) in accordance with the standards, specifications and documentation requirements of the Equitrans Parties, in each case as set forth on Exhibit B attached hereto and incorporated herein (“Work Standards”), provided, that in any event the performance standard set forth in Section 3.1 of the Gathering Agreement and the Base WSA shall apply to Producer’s performance of the Installation Work, mutatis mutandis. Producer agrees to use commercially reasonable efforts to complete the Installation Work on or before October 31, 2023.

(b)The Equitrans Parties covenant and agree to provide Producer with the pipeline materials and all other required materials (excluding flowable fill material) needed to perform the Installation Work (“Materials”); provided, that Producer shall be responsible for (i) arranging for the transportation of the Materials (with reasonable cooperation from the Equitrans Parties) from various locations, including the Durabond warehouse facility in Duquesne, Pennsylvania, the Western yard facility in Amity, Pennsylvania and the warehouse facility in Waynesburg, Pennsylvania, to the location of the Trust Facilities, and (ii) paying the costs and expenses for such transportation (“Transportation Costs”), subject to the terms hereof; provided, further, that title to all Materials shall remain with the Equitrans Parties at all times, it being the intent of this Letter Agreement that the Equitrans Parties own the Trust Facilities, and all personal property constituting the Trust Facilities, in all respects.

(c)Following the Equitrans Parties’ receipt of notice of the completion of the Installation Work, the Equitrans Parties shall promptly thereafter, with

reasonable prior written notice to Producer and during normal business hours, inspect the Installation Work and the Trust Facilities for the purpose of confirming that the same satisfies the standards and specifications provided by the Equitrans Parties and otherwise satisfies the performance standard set forth in Section 3.1 of the Gathering Agreement and Base WSA, as applicable; provided that Producer shall have the right to have a representative present during such inspection and the Equitrans Parties will comply with Producer’s HSE policies and requirements regarding access provided in writing in advance. Reasonably promptly following the Equitrans Parties’ inspection of the Installation Work and the Trust Facilities, the Equitrans Parties shall deliver notice in writing to Producer either (i) approving the Installation Work and the Trust Facilities, or (ii) identifying in reasonable detail any failures of the Installation Work and the Trust Facilities to comply with the Work Standards.

(d)From and after the completion of the Installation Work and the written approval by the Equitrans Parties of the Installation Work, (i) the Equitrans Parties shall be responsible for connection of the Trust Facilities to the Gathering System and Greene County System, as applicable, (ii) the Trust Facilities connected to the Gathering System shall be deemed part of the Gathering System for all purposes under the Gathering Agreement, (iii) the Trust Facilities connected to the Greene County System shall be deemed part of the Greene County System for all purposes under the Base WSA and ITC 01, (iv) Gatherer shall have all rights and responsibilities with respect to the Trust Facilities connected to the Gathering System as are applicable to the Gathering System under the Gathering Agreement (including the indemnification provisions set forth in Article 15 of the Gathering Agreement), and (v) Equitrans Water shall have all rights and responsibilities with respect to the Trust Facilities connected to the Greene County System as are applicable to the Water System under the Base WSA and ITC 01 (including the indemnification provisions set forth in Article 13 of the Base WSA); provided, however, the Equitrans Parties’ approval of the Installation Work and the Trust Facilities shall not limit or diminish Producer’s liability for failure to perform, or cause to be performed, the Installation Work in accordance with Section 1(a) hereof, to the extent that such failure was not identified, and could not reasonably be expected to be identified, by the Equitrans Parties when inspecting the same in accordance with Section 1(c) hereof. Except to the extent expressly set forth herein, this Letter Agreement shall not amend or otherwise modify the obligations of the Parties with respect to the connection of any Wells on the Trust Well Pad or otherwise to the Gathering System under Section 3.3 of the Gathering Agreement and the delivery of Water to the Trust Well Pad under Section 3.4 of the Base WSA and the other terms and conditions thereof.

2.Real Property Rights; Receipt Point Facilities; Incremental Assignment.

(a)The Equitrans Parties have acquired, at their sole cost and expense, all of the easements and rights-of-way necessary for the Equitrans Parties to own and operate the Trust Facilities (“Real Property Rights”).

(b)Producer represents that it shall provide to Equitrans Parties all of its records, files and other data to the extent necessary or convenient to the ownership and operation of the Trust Facilities (excepting all those records subject to confidentiality restrictions, privileged information, and any proprietary information).

(c)To the extent available without interfering with Producer’s facilities or operations, which shall be determined in the reasonable discretion of

Producer, Producer agrees to provide sufficient space for locating Receipt Point facilities on the Trust Well Pad.

(d)To the extent that the Trust Facilities comprise any personal property other than the Materials, on or before the completion of the Installation Work, Producer shall convey all of its right, title and interest in and to the personal property comprising the Trust Facilities, pursuant to an Assignment in substantially the form of Exhibit C.

3.Reimbursement; Costs.

(a)The Equitrans Parties shall reimburse Producer for all Costs incurred or committed to by Producer and/or its Affiliates, not to exceed $[***] (“Cap”).

(b)“Costs” means all actual third party documented costs and expenses of any kind incurred by Producer and/or its Affiliates in connection with the Installation Work, including Transportation Costs. As soon as practical after the completion of the Installation Work, Producer shall deliver to the Equitrans Parties a statement showing in reasonable detail the Costs. The Equitrans Parties agree to pay, or cause to be paid, the Costs, not to exceed the Cap, within [***] days of the date of the statement.

4.    Miscellaneous. The terms and provisions of this Letter Agreement shall be binding on, and shall inure to the benefit of, the Parties and their respective successors and permitted assigns. This Letter Agreement may be executed in any number of counterparts, and each such counterpart hereof shall be deemed to be an original instrument, but all of such counterparts shall constitute for all purposes one agreement. Any signature hereto delivered by a Party by facsimile or other electronic transmission (including scanned documents delivered by email) shall be deemed an original signature hereto, and execution and delivery by such means shall be binding upon the Parties.

5.    Effect of Letter Agreement. The Parties acknowledge and agree that this Letter Agreement constitutes a written instrument executed by the Parties and fulfills the requirements of an amendment contemplated by Section 18.7 of the Gathering Agreement and Section 16.7 of the Base WSA. The Parties hereby ratify and confirm the Gathering Agreement and the Base WSA, as amended hereby. Except as expressly provided herein, the provisions of the Gathering Agreement and the Base WSA shall remain in full force and effect in accordance with their respective terms following the execution of this Letter Agreement. In the event of any conflict or inconsistencies between this Letter Agreement and the Gathering Agreement and the Base WSA, as applicable, the terms and conditions of this Letter Agreement shall prevail.

[SIGNATURE PAGE FOLLOWS]

IN WITNESS WHEREOF, the Parties have executed this Letter Agreement as of the date first written above.

EQUITRANS PARTIES:

EQM GATHERING OPCO, LLC,

a Delaware limited liability company

By:     /s/ John Quinn            

Name: John Quinn__ ___________

Title:     VP Business Development & Comm Svcs___________________

EQUITRANS WATER SERVICES (PA), LLC,

a Delaware limited liability company

By:     /s/ John Quinn            

Name: John Quinn__ ___________

Title:     VP Business Development & Comm Svcs___________________

Letter Agreement re: Trust North Well Pad

Signature Page

PRODUCER:

EQT CORPORATION,

a Pennsylvania corporation

By:     /s/ David Khani        

Name:     David Khani

Title:     Chief Financial Officer

EQT PRODUCTION COMPANY,

a Pennsylvania corporation

By:     /s/ J.E.B. Bolen        

Name: J.E.B. Bolen

Title:     Vice President of Operations Planning

RICE DRILLING B LLC,

a Delaware limited liability company

By:     /s/ J.E.B. Bolen        

Name: J.E.B. Bolen

Title:     Vice President of Operations Planning

EQT ENERGY, LLC,

a Delaware limited liability company

By:     /s/ Keith Shoemaker        

Name:     Keith Shoemaker

Title:     Senior Vice President, Commercial

Letter Agreement re: Trust North Well Pad

Signature Page

EXHIBIT A

[***]

Exhibit A

EXHIBIT B

[***]

EXHIBIT C

NOTICE OF CONFIDENTIALITY RIGHTS: IF YOU ARE A NATURAL PERSON, YOU MAY REMOVE OR STRIKE ANY OR ALL OF THE FOLLOWING INFORMATION FROM ANY INSTRUMENT THAT TRANSFERS AN INTEREST IN REAL PROPERTY BEFORE IT IS FILED FOR RECORD IN THE PUBLIC RECORDS: YOUR SOCIAL SECURITY NUMBER OR YOUR DRIVER'S LICENSE NUMBER.

ASSIGNMENT AND BILL OF SALE

This ASSIGNMENT AND BILL OF SALE (this “Assignment”)is dated effective as of [●], 2023 (the “Effective Time”),by and between [EQT Entity], a [●], whose address is 625 Liberty Avenue, Suite 1700, Pittsburgh, PA 15222, hereinafter referred to as “Assignor”;and [ETRN Entity], a [●], whose address is 2200 Energy Drive, Canonsburg, PA 15317, hereinafter referred to as “Assignee”. Assignor and Assignee are sometimes also referred to singularly as a “Party”and are sometimes collectively referred to as the “Parties”.

RECITALS

WHEREAS, Assignor and certain of its affiliates and Assignee entered into that certain Letter Agreement re: Trust North Well Pad, dated [●], 2023 (“Letter Agreement”), pursuant to which Assignor has agreed, subject to the terms of the Letter Agreement to: (a) construct and install a 12 inch diameter steel gathering pipeline segment approximately 1,200 feet in length extending from the location of the Receipt Point on the Trust Well Pad to the end of the well pad access road near the proposed launcher area as depicted on Exhibit A attached hereto; (b) construct and install an 18 inch diameter HDPE water pipeline segment approximately 1,200 feet in length extending from the location of the Receipt Point on the Trust Well Pad to the end of the well pad access road near the proposed launcher area as depicted on Exhibit A attached hereto; (c) construct and install fiber optic cable approximately 1,200 feet in length extending from the location of the Receipt Point on the Trust Well Pad to the end of the well pad access road near the proposed launcher area as depicted on Exhibit A attached hereto; and (d) open cut the well pad access road and (following the installation of the gathering pipeline segment, water pipeline segment and fiber optic cable) back fill the open cut trench with flowable fill approximately 2,400 feet in length (the facilities described in clauses (a) through (d) collectively, the “Trust Facilities”).

WHEREAS, Assignor desires to assign to Assignee, and Assignee desires to receive from Assignor, all of Assignor’s interest in the Assets described below in accordance with this Assignment.

NOW, THEREFORE, for and in consideration of the mutual promises contained herein, the benefits to be derived by each party hereunder, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Assignor and Assignee agree as follows:

ARTICLE I

ASSIGNMENT

1.1    Assignment. For and in consideration of Ten Dollars ($10.00) and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Assignor does hereby GRANT, BARGAIN, SELL, CONVEY, ASSIGN, TRANSFER, SET OVER, AND DELIVER unto Assignee, all of Assignor’s right, title, and interest in and to the personal property constituting the Trust Facilities, including such personal property set forth on Exhibit A (the “Assets”).

TO HAVE AND TO HOLD the Assets unto Assignee, and its successors and assigns, forever, subject, however, to all the terms and conditions of this Assignment.

ARTICLE II

DISCLAIMERS

2.1    Disclaimers. NEITHER ASSIGNOR NOR ANY OF ITS AFFILIATES NOR ANY OF ITS OR THEIR REPRESENTATIVES IS MAKING ANY REPRESENTATION OR WARRANTY OF ANY KIND OR NATURE WHATSOEVER, ORAL OR WRITTEN, STATUTORY, EXPRESS OR IMPLIED, RELATING TO THE ASSETS, INCLUDING BUT NOT LIMITED TO ANY REPRESENTATION OR WARRANTY RELATING TO THE TITLE, MAINTENANCE, REPAIR, CONDITION, DESIGN, PERFORMANCE, VALUE, MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR USE OR PURPOSE OF THE ASSETS, AND ASSIGNOR HEREBY DISCLAIMS ANY SUCH REPRESENTATIONS OR WARRANTIES.

2.2 Letter Agreement. This Assignment is made specifically subject to the terms and conditions of the Letter Agreement, which is incorporated herein by reference as though set forth in full herein, and should there be any conflict between the terms and provisions of this Assignment and the Letter Agreement, the terms and provisions of the Letter Agreement shall prevail. Capitalized terms used herein without definition shall have the meanings ascribed to them in the Letter Agreement. Except for the Letter Agreement, this Assignment instrument represents the entire agreement between the parties with respect to its subject matter and replaces and supersedes all previous or contemporaneous agreements between them, whether oral, written or formed by a course of dealing. No amendment to this Assignment will be effective unless it is in writing and executed by each party’s duly authorized representative.

2.3Description. It is the express intent of the parties that all of Assignor’s right, title, and interest in and to the Assets be assigned to Assignee hereunder whether such interests are properly described or not, unless expressly reserved herein.

ARTICLE III MISCELLANEOUS

3.1    Governing Law. This Assignment shall be governed by, construed, and enforced in accordance with the laws of the Commonwealth of Pennsylvania without regard to choice of law principles. The Parties agree that the appropriate, exclusive and convenient forum for any disputes among any of the Parties arising out of this Assignment or the transactions contemplated hereby shall be in any state or federal court in the City of Pittsburgh and County of Allegheny, Pennsylvania, and each of the Parties irrevocably submits to the jurisdiction of such courts solely in respect of any proceeding arising out of or related to this Assignment. The Parties further agree that the Parties shall not bring suit with respect to any disputes arising out of this Agreement or the transactions contemplated hereby in any court or jurisdiction other than the above specified courts. EACH PARTY HEREBY WAIVES ITS RIGHT TO TRIAL BY JURY IN ANY PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT, WHETHER SOUNDING IN CONTRACT, TORT OR OTHERWISE.

3.2    Cooperation. In addition to this Assignment, each Party shall execute, acknowledge, and deliver to the other Party, in a timely manner and without further consideration, any documents or instruments that such Party may reasonably require, including further assignments or conveyances required by any governmental authorities, deeds, and consents to further evidence the assignment and conveyance of the Assets as contemplated by this Assignment.

3.3    Binding Effect. The terms, covenants and conditions of this Assignment bind and inure to the benefit of the Parties hereto and their respective successors and assigns.

10

3.4    Counterparts. This Assignment may be executed in any number of counterparts, and each such counterpart hereof shall be deemed to be an original instrument, but all of such counterparts shall constitute for all purposes one agreement.

[Signature Pages to Follow]

11

IN WITNESS WHEREOF, this Assignment has been executed by Assignor as of the Effective Time.

ASSIGNOR:

[EQT Entity]

By:     

Name:     

Title:     

ACKNOWLEDGMENTS

COMMONWEALTH OF ______________________,

COUNTY OF ____________________, TO-WIT:

        The undersigned, a notary public of said county, hereby certifies that ________________________, the ________________________ of ________________________, a ________________________, who signed the foregoing Assignment, has this day in my said county, before me, acknowledged that he/she executed the same for the purposes therein contained as the ________________________ of said corporation.

Given under my hand this ___ day of ____________, 2023.

My commission expires: __________________________________________

______________________________________

        Notary Public

(NOTARIAL SEAL)

[Signature and Acknowledgment Page to Assignment of Rights of Way]

IN WITNESS WHEREOF, this Assignment has been executed by Assignee as of the Effective Time.

ASSIGNEE:

[ETRN Entity]

By:

Name:

Title:

ACKNOWLEDGMENTS

COMMONWEALTH OF ______________________,

COUNTY OF ____________________, TO-WIT:

        The undersigned, a notary public of said county, hereby certifies that ________________________, the ________________________ of ________________________, a ________________________, who signed the foregoing Assignment, has this day in my said county, before me, acknowledged that he/she executed the same for the purposes therein contained as the ________________________ of said partnership.

Given under my hand this ___ day of ____________, 2023.

My commission expires: __________________________________________

______________________________________

    Notary Public

(NOTARIAL SEAL)

[Signature and Acknowledgment Page to Assignment of Rights of Way]

EXHIBIT A

Assets

EXHIBIT B

Trust Well Pad and Trust Facilities

[***]

EX-10.02

Exhibit 10.02

[Date]

[Employee Name]

[Address]

Re:    Senior Executive 2021 MVP Performance Share Units Award Agreement Notice

Dear,

As you know, Equitrans Midstream Corporation (the “Company”) previously granted you performance share units on December 6, 2021 pursuant to the Senior Executive 2021 MVP Performance Share Units Award Agreement (the “MVP Award”). The MVP Award was made to recognize and show appreciation for your efforts in support of the important Mountain Valley Pipeline (“MVP”) project. All capitalized terms used but not defined in this notice shall have the meaning given to them in the MVP Award.

The Company has decided that, effective July 26, 2023, your MVP Award is hereby amended as follows:

•to remove the January 1, 2024 deadline for MVP going in-service (meaning all references to the Expiration Date in your MVP Award are hereby removed); and

•to adjust the denominator used to determine the pro-rata portion that may be earned following your death, Disability, or Retirement prior to the In-Service Date. Specifically, the denominator described in Section 4(a) of your MVP Award is hereby amended to equal the lesser of (i) the number of full months from the Grant Date to the In-Service Date and (ii) twenty-four (24). Notwithstanding the foregoing, in no event shall the resulting fraction be greater than 1.

All other terms and conditions of the MVP Award, including but not limited to the payment timing provisions described in Section 6 of your MVP Award, remain in full force and effect.

Sincerely,

Equitrans Midstream Corporation

By: /s/ Anne M. Naqi    

    Anne M. Naqi

Vice President & Chief Human Resources Officer

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Thomas F. Karam, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Equitrans Midstream Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:  August 1, 2023

/s/ Thomas F. Karam

Thomas F. Karam

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Kirk R. Oliver, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Equitrans Midstream Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 1, 2023

/s/ Kirk R. Oliver

Kirk R. Oliver

Senior Vice President and Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION

In connection with the QuarterlyReport of Equitrans Midstream Corporation on Form 10-Q for the period ended June 30, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certify pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)    The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Equitrans Midstream Corporation.

/s/ Thomas F. Karam	August 1, 2023
Thomas F. Karam Chief Executive Officer
/s/ Kirk R. Oliver	August 1, 2023
Kirk R. Oliver Senior Vice President and Chief Financial Officer

XML

Cover - shares shares in Thousands	6 Months Ended
	Jun. 30, 2023	Jul. 31, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-38629
Entity Registrant Name	EQUITRANS MIDSTREAM CORPORATION
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	83-0516635
Entity Address, Address Line One	2200 Energy Drive
Entity Address, City or Town	Canonsburg
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15317
City Area Code	724
Local Phone Number	271-7600
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	ETRN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Small Business Entity	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		433,261
Entity Central Index Key	0001747009
Amendment Flag	false
Current Fiscal Year End	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2

XML

Statements of Consolidated Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	[1]	Jun. 30, 2023		Jun. 30, 2022
Income Statement [Abstract]
Operating revenues		$ 318,469	$ 328,611		$ 694,806		$ 670,757	[1]
Operating expenses:
Operating and maintenance		45,767	32,442		88,629		65,523	[1]
Selling, general and administrative		56,932	29,009		89,554		58,726	[1]
Depreciation		70,031	67,657		139,435		134,700	[1],[2]
Amortization of intangible assets		16,205	16,205		32,410		32,410	[1],[2]
Total operating expenses		188,935	145,313		350,028		291,359	[1]
Operating income		129,534	183,298		344,778		379,398	[1]
Equity income	[3]	23,686	39		23,808	[4]	43	[1],[2],[4]
Other income, net		19,809	4,148		11,707		5,659	[1]
Loss on extinguishment of debt		0	(24,937)		0		(24,937)	[2]
Net interest expense		(103,644)	(95,117)		(208,601)		(188,238)	[1]
Income before income taxes		69,385	67,431		171,692		171,925	[1]
Income tax expense (benefit)		465	2,692		(3,319)		8,293	[1]
Net income		68,920	64,739		175,011		163,632	[1],[2]
Net income attributable to noncontrolling interest		1,675	3,948		6,084		7,723	[1]
Net income attributable to Equitrans Midstream		67,245	60,791		168,927		155,909	[1]
Preferred dividends		14,628	14,628		29,256		29,256	[1]
Net income attributable to Equitrans Midstream common shareholders		$ 52,617	$ 46,163		$ 139,671		$ 126,653	[1]
Earnings per share of common stock attributable to Equitrans Midstream common shareholders - basic (in dollars per share)		$ 0.12	$ 0.11		$ 0.32		$ 0.29	[1]
Earnings per share of common stock attributable to Equitrans Midstream common shareholders - diluted (in dollars per share)		$ 0.12	$ 0.11		$ 0.32		$ 0.29	[1]
Weighted average common shares outstanding - basic (in shares)		433,961	433,333		433,834		433,326	[1]
Weighted average common shares outstanding - diluted (in shares)		435,476	434,025		434,640		433,970	[1]
Statement of comprehensive income:
Net income		$ 68,920	$ 64,739		$ 175,011		$ 163,632	[1],[2]
Other comprehensive income, net of tax:
Pension and other post-retirement benefits liability adjustment, net of tax expense of $7, $12, $14 and $24		22	34		44		68	[1]
Other comprehensive income		22	34		44		68	[1]
Comprehensive income		68,942	64,773		175,055		163,700	[1]
Less: Comprehensive income attributable to noncontrolling interest		1,675	3,948		6,084		7,723	[1]
Less: Comprehensive income attributable to preferred dividends		14,628	14,628		29,256		29,256	[1]
Comprehensive income attributable to Equitrans Midstream common shareholders		$ 52,639	$ 46,197		$ 139,715		$ 126,721	[1]
Dividends declared per common share (in dollars per share)		$ 0.15	$ 0.15		$ 0.30		$ 0.30	[1]

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

[2] Certain line items of the previously issued unaudited interim consolidated financial statements for the six months ended June 30, 2022 have been revised. See Note 1 for more information.

[3] Represents equity income from Mountain Valley Pipeline, LLC (the MVP Joint Venture). See Note 4.

[4] Represents equity income from the MVP Joint Venture. See Note 4.

XML

Statements of Consolidated Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Pension and other post-retirement benefits liability adjustments, tax expense	$ 7	$ 7	$ 12	$ 12	$ 14	$ 24

XML

Statements of Consolidated Cash Flows (Unaudited) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	[1]
Cash flows from operating activities:
Net income		$ 175,011	$ 163,632	[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		139,435	134,700	[2]
Amortization of intangible assets		32,410	32,410	[2]
Provision for credit losses on accounts receivable		1,258	0
Deferred income taxes		(6,457)	5,372
Equity income	[3],[4]	(23,808)	(43)	[2]
Other income, net		(11,323)	(5,410)
Loss on extinguishment of debt		0	24,937
Non-cash long-term compensation expense		26,166	8,484
Changes in other assets and liabilities:
Accounts receivable		40,862	38,760
Accounts payable		(12,474)	(339)
Accrued interest		(2,386)	(15,256)
Deferred revenue		157,783	176,206
Other assets and other liabilities		6,797	(26,481)
Net cash provided by operating activities		523,274	536,972
Cash flows from investing activities:
Capital expenditures		(171,940)	(163,139)
Capital contributions to the MVP Joint Venture		(70,533)	(111,752)
Principal payments received on the Preferred Interest		2,878	2,721
Net cash used in investing activities		(239,595)	(272,170)
Cash flows from financing activities:
Proceeds from revolving credit facility borrowings		215,000	140,000
Payments on revolving credit facility borrowings		(180,000)	(224,500)
Proceeds from the issuance of long-term debt		0	1,000,000
Debt discounts, debt issuance costs and credit facility arrangement fees		(60)	(19,911)
Payment for retirement of long-term debt		(98,941)	(1,021,459)
Dividends paid to holders of Equitrans Midstream Preferred Shares		(29,256)	(29,256)
Dividends paid to common shareholders		(129,941)	(129,816)
Distributions paid to noncontrolling interest		(20,000)	0
Other items		(1,307)	0
Net cash used in financing activities		(244,505)	(284,942)
Net change in cash and cash equivalents		39,174	(20,140)
Cash and cash equivalents at beginning of period		67,898	134,661
Cash and cash equivalents at end of period		107,072	114,521
Cash paid during the period for:
Interest, net of amount capitalized		208,269	198,463
Income taxes, net		$ 550	$ 1,243

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the six months ended June 30, 2022 have been revised. See Note 1 for more information.

[2] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

[3] Represents equity income from Mountain Valley Pipeline, LLC (the MVP Joint Venture). See Note 4.

[4] Represents equity income from the MVP Joint Venture. See Note 4.

XML

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents		$ 107,072	$ 67,898
Accounts receivable (net of allowance for credit losses of $4,289 and $3,031 as of June 30, 2023 and December 31, 2022, respectively)		237,630	246,887
Other current assets		71,012	74,917
Total current assets		415,714	389,702
Property, plant and equipment		9,528,396	9,365,051
Less: accumulated depreciation		(1,617,527)	(1,480,720)
Net property, plant and equipment		7,910,869	7,884,331
Investment in unconsolidated entities	[1]	1,090,202	819,743
Goodwill		486,698	486,698
Net intangible assets		554,543	586,952
Other assets		268,987	278,159
Total assets		10,727,013	10,445,585
Current liabilities:
Current portion of long-term debt		0	98,830
Accounts payable		49,496	60,528
Capital contributions payable to the MVP Joint Venture		209,779	34,355
Accrued interest		133,376	135,762
Accrued liabilities		69,208	83,835
Total current liabilities		461,859	413,310
Long-term liabilities:
Revolving credit facility borrowings		570,000	535,000
Long-term debt		6,340,880	6,335,320
Contract liability		1,129,599	968,535
Regulatory and other long-term liabilities		124,875	112,974
Total liabilities		8,627,213	8,365,139
Mezzanine equity:
Equitrans Midstream Preferred Shares, 30,018 shares issued and outstanding as of June 30, 2023 and December 31, 2022		681,842	681,842
Shareholders' equity:
Common stock, no par value, 433,261 and 432,781 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively		4,001,030	3,974,127
Retained deficit		(3,047,267)	(3,053,590)
Accumulated other comprehensive loss		(1,288)	(1,332)
Total common shareholders' equity		952,475	919,205
Noncontrolling interest		465,483	479,399
Total shareholders' equity		1,417,958	1,398,604
Total liabilities, mezzanine equity and shareholders' equity		$ 10,727,013	$ 10,445,585

[1] Represents investment in the MVP Joint Venture. See Note 4.

XML

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Accounts receivable, for doubtful accounts	$ 4,289	$ 3,031
Mezzanine equity, preferred shares issued (in shares)	30,018	30,018
Mezzanine equity, preferred shares outstanding (in shares)	30,018	30,018
Common stock, shares issued (in shares)	433,261	432,781
Common stock, shares outstanding (in shares)	433,261	432,781

XML

Statements of Consolidated Shareholders' Equity and Mezzanine Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands		Total		Common Stock		Retained Deficit		Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2021				432,522
Beginning balance at Dec. 31, 2021		$ 1,972,486	[1]	$ 3,955,918	[1]	$ (2,464,573)	[1]	$ (2,054)	$ 483,195
Increase (Decrease) in Partners' Capital
Net income		84,265	[1]			80,490	[1]		3,775
Pension and other post-retirement benefits liability adjustment, net of tax expense		34	[1]					34
Dividends on common shares	[1]	(65,584)				(65,584)
Share-based compensation plans, net (in shares)				155
Share-based compensation plans, net	[1]	4,670		$ 4,670
Ending balance (in shares) at Mar. 31, 2022				432,677
Ending balance at Mar. 31, 2022		1,995,871	[1]	$ 3,960,588	[1]	(2,449,667)	[1]	(2,020)	486,970
Mezzanine Equity, beginning balance at Dec. 31, 2021		681,842
Mezzanine Equity
Mezzanine Equity, Net income		14,628
Dividends paid to holders of Equitrans Midstream Preferred Shares		(14,628)
Mezzanine Equity, ending balance at Mar. 31, 2022		681,842
Increase (Decrease) in Partners' Capital
Net income		50,111	[1]			46,163	[1]		3,948
Pension and other post-retirement benefits liability adjustment, net of tax expense		34	[1]					34
Dividends on common shares	[1]	(64,991)				(64,991)
Share-based compensation plans, net (in shares)				104
Share-based compensation plans, net	[1]	4,470		$ 4,470
Ending balance (in shares) at Jun. 30, 2022				432,781
Ending balance at Jun. 30, 2022		1,985,495	[1]	$ 3,965,058	[1]	(2,468,495)	[1]	(1,986)	490,918
Mezzanine Equity
Mezzanine Equity, Net income		14,628
Dividends paid to holders of Equitrans Midstream Preferred Shares		(14,628)
Mezzanine Equity, ending balance at Jun. 30, 2022		$ 681,842
Beginning balance (in shares) at Dec. 31, 2022		432,781		432,781
Beginning balance at Dec. 31, 2022		$ 1,398,604		$ 3,974,127		(3,053,590)		(1,332)	479,399
Increase (Decrease) in Partners' Capital
Net income		91,463				87,054			4,409
Pension and other post-retirement benefits liability adjustment, net of tax expense		22						22
Dividends on common shares		(65,121)				(65,121)
Share-based compensation plans, net (in shares)				402
Share-based compensation plans, net		3,050		$ 3,050
Distributions paid to noncontrolling interest in Eureka Midstream Holdings, LLC		(8,000)							(8,000)
Ending balance (in shares) at Mar. 31, 2023				433,183
Ending balance at Mar. 31, 2023		1,420,018		$ 3,977,177		(3,031,657)		(1,310)	475,808
Mezzanine Equity, beginning balance at Dec. 31, 2022		681,842
Mezzanine Equity
Mezzanine Equity, Net income		14,628
Dividends paid to holders of Equitrans Midstream Preferred Shares		(14,628)
Mezzanine Equity, ending balance at Mar. 31, 2023		681,842
Increase (Decrease) in Partners' Capital
Net income		54,292				52,617			1,675
Pension and other post-retirement benefits liability adjustment, net of tax expense		22						22
Dividends on common shares		(68,227)				(68,227)
Share-based compensation plans, net (in shares)				78
Share-based compensation plans, net		23,853		$ 23,853
Distributions paid to noncontrolling interest in Eureka Midstream Holdings, LLC		$ (12,000)							(12,000)
Ending balance (in shares) at Jun. 30, 2023		433,261		433,261
Ending balance at Jun. 30, 2023		$ 1,417,958		$ 4,001,030		$ (3,047,267)		$ (1,288)	$ 465,483
Mezzanine Equity
Mezzanine Equity, Net income		14,628
Dividends paid to holders of Equitrans Midstream Preferred Shares		(14,628)
Mezzanine Equity, ending balance at Jun. 30, 2023		$ 681,842

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

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Statements of Consolidated Shareholders' Equity and Mezzanine Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
Pension and other post-retirement benefits liability adjustments, tax expense	$ 7	$ 7	$ 12	$ 12
Dividends (in dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.15
EQM Midstream Partners, LP
Cash distributions declared (in dollars per unit)	$ 0.4873	$ 0.4873	$ 0.4873	$ 0.4873

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Financial Statements

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Financial Statements

Financial Statements

Nature of Business. The Company's operating subsidiaries provide midstream services to the Company's customers in Pennsylvania, West Virginia and Ohio through three primary assets: the gathering system, which includes predominantly dry gas gathering systems of high-pressure gathering lines; the transmission system, which includes FERC-regulated interstate pipelines and storage systems; and the water network, which primarily consists of water pipelines and other facilities that support well completion activities and produced water handling activities.

Basis of Presentation. References in these financial statements to Equitrans Midstream or the Company refer collectively to Equitrans Midstream Corporation and its consolidated subsidiaries for all periods presented, unless otherwise indicated.

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (GAAP) for interim financial information and with the requirements of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these unaudited consolidated financial statements include all adjustments (consisting of only normal, recurring adjustments, unless otherwise disclosed in this Quarterly Report on Form 10-Q) necessary for a fair presentation of the financial position of the Company as of June 30, 2023, the results of its operations and equity for the three and six months ended June 30, 2023 and 2022 and its cash flows for the six months ended June 30, 2023 and 2022. The consolidated balance sheet at December 31, 2022 has been derived from the audited financial statements at that date, but does not include all of the information and notes required by GAAP for complete financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2022, which includes all disclosures required by GAAP.

Due to, among other things, the seasonal nature of the Company's utility customer contracts, as well as producers’ well completion activities and varying needs for fresh and produced water (which are primarily driven by horizontal lateral lengths and the number of completion stages per well), the interim statements for the three and six months ended June 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023.

For further information, refer to the Company's consolidated financial statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2022, as well as Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" contained herein.

Revisions of Previously Issued Financial Statements.

In the course of its 2022 year-end process, the Company identified certain corrections in its previously issued unaudited interim consolidated financial statements primarily related to the accounting for the Henry Hub cash bonus payment provision (as defined in Note 7). In accordance with Staff Accounting Bulletin (SAB) No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, the Company evaluated the corrections and, based on its analysis of quantitative and qualitative factors, determined that the related impact was not material to the Company's affected unaudited interim consolidated financial statements presented within this Quarterly Report on Form 10-Q. The Company has made the appropriate revisions to its previously issued interim consolidated financial statements in order to correct the Henry Hub cash bonus payment provision, and also made other immaterial revisions to its six months ended June 30, 2022 unaudited interim consolidated financial statements. For more information, see Notes 1 and 16 to the consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2022.

Recently Issued Accounting Standards.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides practical expedients for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. This guidance is applicable to the calculation of each dividend following March 31, 2024 for the Equitrans Midstream Preferred Shares pursuant to the Company's Second Amended and Restated Articles of Incorporation, as well as any Company contracts that use the London Inter-Bank Offered Rate as a reference rate. In December 2022, the FASB also issued ASU 2022-06, which amended Topic 848 to defer the sunset date to apply the practical expedients until December 31, 2024. The Company adopted this standard on April 1, 2023 and it had no impact on the Company's financial statements and related disclosures.

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Financial Information by Business Segment

6 Months Ended

Jun. 30, 2023

Segment Reporting [Abstract]

Financial Information by Business Segment

Financial Information by Business Segment

The Company reports its operations in three segments that reflect its three lines of business of Gathering, Transmission and Water, which reflects the manner in which management evaluates the business for making operating decisions and assessing performance.

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(Thousands)
Revenues from customers:
Gathering	$	210,194	$	225,314	$	420,946	$	445,104
Transmission	92,540		91,078		231,446		201,873
Water	15,735		12,219		42,414		23,780
Total operating revenues	$	318,469	$	328,611	$	694,806	$	670,757
Operating income (loss):
Gathering	$	81,020	$	119,564	$	185,314	$	233,416
Transmission	48,451		60,841		147,373		145,403
Water	530		3,120		12,903		1,195
Headquarters (a)	(467)		(227)		(812)		(616)
Total operating income	$	129,534	$	183,298	$	344,778	$	379,398
Reconciliation of operating income to net income:
Equity income (b)	$	23,686	$	39	$	23,808	$	43
Other income, net (c)	19,809		4,148		11,707		5,659
Loss on extinguishment of debt	—		(24,937)		—		(24,937)
Net interest expense	(103,644)		(95,117)		(208,601)		(188,238)
Income tax expense (benefit)	465		2,692		(3,319)		8,293
Net income	$	68,920	$	64,739	$	175,011	$	163,632

(a)Includes certain unallocated corporate expenses.

(b)Equity income is included in the Transmission segment.

(c)Includes unrealized gains on derivative instruments recorded in the Gathering segment.

	June 30, 2023		December 31, 2022
	(Thousands)
Segment assets:
Gathering	$	7,597,998	$	7,610,233
Transmission (a)	2,590,514		2,333,896
Water	214,005		218,680
Total operating segments	10,402,517		10,162,809
Headquarters, including cash	324,496		282,776
Total assets	$	10,727,013	$	10,445,585

(a)The equity method investment in the MVP Joint Venture is included in the Transmission segment.

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(Thousands)
Depreciation:
Gathering	$	49,387	$	48,573	$	98,736	$	96,828
Transmission	13,904		13,904		27,792		27,798
Water	6,511		4,804		12,374		9,321
Headquarters	229		376		533		753
Total	$	70,031	$	67,657	$	139,435	$	134,700
Capital expenditures:
Gathering (a)	$	71,893	$	69,189	$	131,606	$	122,336
Transmission (b)	14,375		6,339		23,564		10,565
Water	11,148		22,526		22,224		32,091
Headquarters	—		1		—		13
Total (c)	$	97,416	$	98,055	$	177,394	$	165,005

(a)Includes capital expenditures related to the noncontrolling interest in Eureka Midstream Holdings, LLC (Eureka Midstream) of approximately $5.0 million and $8.2 million for the three and six months ended June 30, 2023, respectively, and approximately $8.7 million and $11.7 million for the three and six months ended June 30, 2022, respectively.

(b)Transmission capital expenditures do not include aggregate capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of approximately $36.0 million and $70.5 million for the three and six months ended June 30, 2023, respectively, and approximately $39.2 million and $111.8 million for the three and six months ended June 30, 2022, respectively.

(c)The Company accrues capital expenditures when the work has been completed but the associated bills have not yet been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. The net impact of non-cash capital expenditures, including the effect of accrued capital expenditures, transfers to/from inventory as assets are completed/assigned to a project and capitalized share-based compensation costs were $(1.1) million and $(5.5) million for the three and six months ended June 30, 2023, respectively, and $(6.2) million and $(1.9) million for the three and six months ended June 30, 2022, respectively.

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Revenue from Contracts with Customers

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customers

Revenue from Contracts with Customers

For the three and six months ended June 30, 2023 and 2022, substantially all revenues recognized on the Company's statements of consolidated comprehensive income were from contracts with customers. As of June 30, 2023 and December 31, 2022, all receivables recorded on the Company's consolidated balance sheets represented performance obligations that have been satisfied and for which an unconditional right to consideration exists.

Summary of disaggregated revenues. The tables below provide disaggregated revenue information by business segment.

	Three Months Ended June 30, 2023
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	141,737	$	82,247	$	9,389	$	233,373
Volumetric-based fee revenues	68,457		10,293		6,346		85,096
Total operating revenues	$	210,194	$	92,540	$	15,735	$	318,469
	Three Months Ended June 30, 2022
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	138,605	$	84,675	$	9,375	$	232,655
Volumetric-based fee revenues	86,709		6,403		2,844		95,956
Total operating revenues	$	225,314	$	91,078	$	12,219	$	328,611

	Six Months Ended June 30, 2023
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	281,808	$	183,969	$	18,764	$	484,541
Volumetric-based fee revenues (b)	139,138		47,477		23,650		210,265
Total operating revenues	$	420,946	$	231,446	$	42,414	$	694,806
	Six Months Ended June 30, 2022
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	271,202	$	187,545	$	15,127	$	473,874
Volumetric-based fee revenues	173,902		14,328		8,653		196,883
Total operating revenues	$	445,104	$	201,873	$	23,780	$	670,757

(a) Firm reservation fee revenues associated with Gathering included MVC unbilled revenues of approximately $2.4 million and $5.7 million for the three and six months ended June 30, 2023, respectively, and $6.2 million and $8.9 million for the three and six months ended June 30, 2022, respectively.

(b) For the six months ended June 30, 2023, volumetric-based fee revenues associated with Gathering and Transmission included one-time contract buyouts by a customer for approximately $5.0 million and $23.8 million, respectively.

Contract assets. The Company's contract assets related to the Company's future MVC deficiency payments are generally expected to be collected within the next twelve months and are primarily included in other current assets in the Company's consolidated balance sheets until such time as the MVC deficiency payments are invoiced to the customer.

The following table presents changes in the Company's unbilled revenue balance:

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Balance as of beginning of period	$	27,493	$	16,772
Revenue recognized in excess of amounts invoiced (a)	5,680		10,940
Minimum volume commitments invoiced (b)	(23,558)		(14,884)
Amortization (c)	(329)		(220)
Balance as of end of period	$	9,286	$	12,608

(a)Primarily includes revenues associated with MVCs that are generally included in firm reservation fee revenues within the Gathering and Water segments.

(b)Unbilled revenues are transferred to accounts receivable once the Company has an unconditional right to consideration from the customer.

(c)Amortization of capitalized contract costs paid to customers over the expected life of the agreement.

Contract liabilities. The Company's contract liabilities consist of deferred revenue primarily associated with the EQT Global GGA. Contract liabilities are classified as current or non-current according to when such amounts are expected to be recognized.

The following table presents changes in the Company's contract liability balances:

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Balance as of beginning of period	$	973,087	$	822,416
Amounts recorded during the period (a)	165,011		176,743
Change in estimated variable consideration (b)	(3,392)		—
Amounts transferred during the period (c)	(3,835)		(537)
Balance as of end of period	$	1,130,871	$	998,622

(a)Includes deferred billed revenue during the six months ended June 30, 2023 and 2022 primarily associated with the EQT Global GGA.

(b)Change in estimated variable consideration represents the decrease in total deferred revenue due to changes in assumptions.

(c)Deferred revenues are recognized as revenue upon satisfaction of the Company's performance obligation to the customer.

Summary of remaining performance obligations. The following table summarizes the estimated transaction price allocated to the Company's remaining performance obligations under all contracts with firm reservation fees, MVCs and/or ARCs as of June 30, 2023 that the Company will invoice or transfer from contract liabilities and recognize in future periods.

		2023(a)		2024		2025		2026		2027		Thereafter		Total
	(Thousands)
Gathering firm reservation fees		$	48,677	$	172,708	$	176,307	$	166,930	$	160,370	$	1,707,106	$	2,432,098
Gathering revenues supported by MVCs		230,638		440,716		464,165		496,478		488,261		3,172,196		5,292,454
Transmission firm reservation fees		176,820		400,788		392,544		391,489		392,679		3,139,671		4,893,991
Water revenues supported by ARCs		22,755		45,706		48,441		45,159		44,065		166,644		372,770
Total (b)		$	478,890	$	1,059,918	$	1,081,457	$	1,100,056	$	1,085,375	$	8,185,617	$	12,991,313

(a)    July 1, 2023 through December 31, 2023.

(b)    Includes assumptions regarding timing for placing certain projects in-service. Such assumptions may not be realized and delays in the in-service dates for projects have substantially altered, and additional delays may further substantially alter, the remaining performance obligations for certain contracts with firm reservation fees, MVCs and/or ARCs. The MVP Joint Venture is accounted for as an equity method investment and those amounts are not included in the table above.

Based on total projected contractual revenues, including projected contractual revenues from future capacity expected from expansion projects that are not yet fully constructed or not yet fully in-service for which the Company has executed firm contracts, the Company's firm gathering contracts and firm transmission and storage contracts had weighted average remaining terms of approximately 13 years and 12 years, respectively, as of June 30, 2023.

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Investments in Unconsolidated Entity

6 Months Ended

Jun. 30, 2023

Equity Method Investments and Joint Ventures [Abstract]

Investments in Unconsolidated Entity

Investment in Unconsolidated EntityThe MVP Joint Venture is constructing the Mountain Valley Pipeline (MVP), an estimated 300-mile natural gas interstate pipeline that is designed to span from northern West Virginia to southern Virginia. The Company will operate the MVP and owned a 47.3% interest in the MVP project as of June 30, 2023. On November 4, 2019, Consolidated Edison, Inc. (Con Edison) exercised an option to cap its investment in the construction of the MVP project at approximately $530 million (excluding AFUDC). On May 4, 2023, RGC Resources, Inc. (RGC) also exercised an option for the Company to fund RGC's portion of future capital contributions with respect to the MVP project, which funding the Company commenced in June 2023 and will continue through the full in-service date of the MVP. The Company and NextEra Energy, Inc. (NEE) are obligated to, and RGC prior to the exercise of its option described above had opted to, fund the shortfall in Con Edison's capital contributions, on a pro rata basis. Following RGC's exercise of its option, the Company is also funding RGC's portion of Con Edison's shortfall. Such funding by the Company in respect of the Con Edison shortfall and RGC's portion of capital contributions has and will correspondingly increase the Company's interests in the MVP project and decrease Con Edison's and RGC's respective interests,

as applicable, in the MVP project. If the MVP project were to be completed in 2023 at a total project cost of approximately $6.6 billion (excluding AFUDC), the Company's equity ownership in the MVP project would progressively increase from approximately 47.3% to approximately 48.3%. The MVP Joint Venture is a variable interest entity because it has insufficient equity to finance its activities during the construction stage of the project. The Company is not the primary beneficiary of the MVP Joint Venture because the Company does not have the power to direct the activities that most significantly affect the MVP Joint Venture's economic performance. Certain business decisions, such as decisions to make distributions of cash, require a greater than 66 2/3% ownership interest approval, and no one member owns more than a 66 2/3% interest.

In April 2018, the MVP Joint Venture announced the MVP Southgate project, which is a contemplated interstate pipeline that was approved by the FERC to extend approximately 75-miles from the MVP at Pittsylvania County, Virginia to new delivery points in Rockingham and Alamance Counties, North Carolina. The Company is expected to operate the MVP Southgate pipeline and owned a 47.2% interest in the MVP Southgate project as of June 30, 2023. The MVP Joint Venture continues to evaluate the MVP Southgate project and is focused on its active negotiations with the project shipper, Dominion Energy North Carolina, and a prospective customer regarding refining the MVP Southgate project’s design, scope and/or timing for the benefit of such customers in lieu of pursuing the project as originally contemplated. Dominion Energy North Carolina’s obligations under the precedent agreement in support of the original project are subject to certain conditions, including, among others, that the MVP Joint Venture will have completed construction of the project facilities by December 31, 2023. The Company is unable to ensure the results of the negotiations between the MVP Joint Venture and Dominion Energy North Carolina and a prospective customer, including the ultimate design, scope, timing, undertaking or completion of the project.

The Company reviews the carrying value of its investments in unconsolidated entities for impairment whenever events or changes in circumstances indicate that the fair value may have declined in value. There is risk that the Company's equity method investment in the MVP Joint Venture may be further impaired in the future due to ongoing (and potentially future) legal and regulatory matters, as well as potential macroeconomic factors, including other than temporary market fluctuations, changes in interest rates, cost increases and other unanticipated events. While macroeconomic factors in and of themselves may not be a direct indicator of impairment, should an impairment indicator be identified in the future, macroeconomic factors such as changes in interest rates could ultimately impact the size and scope of any potential impairment.

In June 2023, the MVP Joint Venture issued a capital call notice for the funding of the MVP project to MVP Holdco, LLC (MVP Holdco), a wholly owned subsidiary of the Company, for $209.6 million, of which $15.5 million and $55.3 million were paid in July 2023 and August 2023, respectively, with the remaining $138.8 million expected to be paid in September 2023.

Pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances in respect of the MVP project, which may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral, in favor of the MVP Joint Venture to provide assurance as to the funding of MVP Holdco's proportionate share of the construction budget for the MVP project.

In addition, pursuant to the MVP Joint Venture's limited liability company agreement, MVP Holdco is obligated to provide performance assurances in respect of MVP Southgate, which performance assurances may take the form of a guarantee from EQM (provided that EQM's debt is rated as investment grade in accordance with the requirements of the MVP Joint Venture's limited liability company agreement), a letter of credit or cash collateral.

As of June 30, 2023, the letter of credit with respect to the MVP project was in the amount of approximately $219.7 million. On April 6, 2023, EQM’s $14.2 million letter of credit with respect to the MVP Southgate project was terminated, following the determination to temporarily defer partners’ obligations to post performance assurances with respect to the MVP Southgate project, which may be reinstated upon further developments. Upon the FERC’s initial release to begin construction of the MVP Southgate project, the Company will be obligated to deliver an allowable form of performance assurance in an amount equal to 33% of MVP Holdco’s proportionate share of the remaining capital obligations under the applicable construction budget.

On June 3, 2023, the President of the United States signed into law the Fiscal Responsibility Act of 2023 that, among other things, ratified and approved all permits and authorizations necessary for the construction and initial operation of the MVP, directed the applicable federal officials and agencies to maintain such authorizations, required the Secretary of the Army to issue not later than June 24, 2023 all permits or verifications necessary to complete construction of the MVP and allow for the MVP’s operation and maintenance, and divested courts of jurisdiction to review agency actions on approvals necessary for MVP construction and initial operation. Following enactment of the Fiscal Responsibility Act of 2023, the Fourth Circuit issued a stay halting MVP project construction in the Jefferson National Forest and a stay of the new Biological Opinion and Incidental Take Statement for the MVP project effectively halting forward construction for the entirety of the project, on July 10, 2023 and July 11, 2023, respectively. The MVP Joint Venture subsequently filed an emergency application to vacate the

stays with the U.S. Supreme Court and the U.S. Supreme Court vacated the stays on July 27, 2023. Accordingly, the MVP Joint Venture recommenced forward construction.

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Stock-based Compensation Plans

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-based Compensation Plans

Share-based Compensation Plans

In December 2021, at the recommendation of the Human Capital and Compensation Committee (the Compensation Committee) and approval of the Company’s Board of Directors (the Board), the Company granted a special, one-time, performance award program designed to reward all employees should the Company’s most complex and strategically significant project, the MVP project, be placed in-service (the MVP PSU Program). The Company granted 1,450,110 shares to all participants in the 2018 Long-Term Incentive Plan, as amended, as of November 1, 2021 (LTIP Participants), except the Company’s named executive officers (NEOs) and certain other senior leaders (collectively, the Senior Executives), and 1,158,030 shares to the Senior Executives. The MVP PSU Program awards were granted on December 6, 2021 and will be paid in Company common stock, contingent on the MVP Joint Venture being authorized by the FERC to commence service on the MVP (such authorization, the In-Service Date) on or before a specified expiration date of January 1, 2024 (the Expiration Date, the continued applicability of which is discussed below), subject to continued service through the applicable payment date:

•As to shares issued to the LTIP Participants, 100% will be paid on the date selected by the Company that is not later than 90 days after the In-Service Date;

•As to shares issued to the Senior Executives:

•50% will be paid on the date selected by the Company that is not later than 90 days after the In-Service Date;

•25% will be paid on the date selected by the Company that is not later than 30 days after the first anniversary of the In-Service Date; and

•25% will be paid on the date selected by the Company that is not later than 30 days after the second anniversary of the In-Service Date.

Dividends are eligible to be paid in cash upon vesting on each share of common stock as dividends are declared on the Company's common stock during the vesting period.

As of June 30, 2023, the achievement of the MVP Joint Venture being authorized by the FERC to commence service on the MVP on or before the Expiration Date represented a performance condition as defined by ASC 718, Share-based Compensation, that should be assessed at the end of each reporting period as to whether the performance condition is probable of being achieved. Due to the graded vesting of the MVP PSU Program awards to the Senior Executives, the Company recognizes compensation cost over the requisite service period for each separately vested tranche of the award as though each award was, in substance, its own award. During the three months ended June 30, 2023, the performance condition associated with the MVP PSU Program awards was deemed to be probable, and therefore, the Company recognized compensation cost of approximately $16.8 million that includes the cumulative catch-up of approximately $14.1 million to reflect the requisite service period of each award that has been provided to date. As of June 30, 2023, there was approximately $7.5 million of unrecognized compensation cost related to non-vested MVP PSU Program awards that is expected to be recognized over a remaining weighted average vesting term of approximately 0.8 years.

The following table provides detailed information on the MVP PSU Program as of June 30, 2023:

MVP PSU Program	Non-vested Shares	Grant Date Fair Value (a)	Fair Value (Thousands)		Requisite Service Period	Unrecognized Compensation Cost (Thousands)
LTIP Participants	1,370,803	$9.59	$	13,146	25 months	$	3,109
Senior Executives T1	579,015	$9.59	5,553		25 months	1,333
Senior Executives T2	289,511	$9.59	2,776		37 months	1,351
Senior Executives T3	289,504	$9.59	2,776		49 months	1,700

(a)    Determined based upon the closing price of the Company's common stock on the day before the grant date.

As discussed further in Note 4, as well as in “Outlook” and Part II, “Item 1. Legal Proceedings” of this Quarterly Report on Form 10-Q, MVP forward construction had been halted by the Fourth Circuit implementing stays of project authorizations in July 2023. Construction resumed following the U.S. Supreme Court vacating the Fourth Circuit's stays on July 27, 2023.

In connection with considering the Company’s ongoing efforts to complete the MVP project, the Board has taken note of the significant legal and regulatory obstacles that have delayed progress on the MVP project that were outside of the control of the Company, particularly since the inception of the MVP PSU Program, the efforts undertaken by many of the Company’s employees, including the NEOs, to overcome these obstacles, and ongoing risks. The Board also is focused on and seeks to promote the Company's top priority of completing the MVP project safely and in compliance with applicable environmental standards. Taking into account these factors, the proximity of the Expiration Date, and noting the potential that the Expiration Date could distract from, or be cited by project opponents as a distraction from, a focus on safety and environmental compliance, the Board, on July 26, 2023, with the recommendation of the Compensation Committee, approved an amendment to the MVP PSU Program to eliminate the Expiration Date as a term of the MVP PSU Program and all award agreements thereunder (the Amendment).

Accordingly, the Equitrans Midstream Corporation Senior Executive 2021 MVP Performance Share Units Award Agreements to which the NEOs are parties and the Equitrans Midstream Corporation LTIP Participant 2021 MVP Performance Share Units Award Agreements have been amended to reflect the elimination of the Expiration Date, and the calculation of shares retained in the event of a participant’s termination due to death, disability or retirement also has been clarified. All other terms of the award agreements remain in full force and effect.

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Debt

6 Months Ended

Jun. 30, 2023

Debt Disclosure [Abstract]

Debt

Debt

Amended EQM Credit Facility. As of June 30, 2023, the Company had aggregate commitments available under the Amended EQM Credit Facility of approximately $2.16 billion before October 31, 2023 (the Earlier Maturity Date), with approximately $1.55 billion in aggregate commitments available on and after the Earlier Maturity Date and prior to April 30, 2025 (the Later Maturity Date). As of June 30, 2023, EQM had approximately $255 million of borrowings and $220.7 million of letters of credit outstanding under the Amended EQM Credit Facility. As of June 30, 2023, pursuant to the terms of the Amended EQM Credit Facility, EQM had the ability to borrow approximately $0.6 billion under the Amended EQM Credit Facility. The amount EQM is able to borrow under the Amended EQM Credit Facility is bounded by a maximum consolidated leverage ratio. As of December 31, 2022, EQM had approximately $240 million of borrowings and $234.9 million of letters of credit outstanding under the Amended EQM Credit Facility.

During the three and six months ended June 30, 2023, the maximum outstanding borrowings at any time were approximately $255 million and $315 million, respectively, and the average daily balances were approximately $191 million and $225 million, respectively. EQM incurred interest at weighted average annual interest rates of approximately 7.9% and 7.7% for the three and six months ended June 30, 2023, respectively. For the three and six months ended June 30, 2023, commitment fees of $2.3 million and $4.4 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility. During the three and six months ended June 30, 2022, the maximum outstanding borrowings at any time were approximately $180 million and $280 million, respectively, and the average daily balances were approximately $126 million and $193 million, respectively. EQM incurred interest at weighted average annual interest rates of approximately 3.5% and 3.0% for the three and six months ended June 30, 2022, respectively. For the three and six months ended June 30, 2022, commitment fees of $2.0 million and $3.8 million, respectively, were paid to maintain credit availability under the Amended EQM Credit Facility. As of June 30, 2023, no term loans were outstanding under the Amended EQM Credit Facility.

Eureka Credit Facility. On May 13, 2021, Eureka Midstream, LLC (Eureka) entered into a $400 million senior secured revolving credit facility with Sumitomo Mitsui Banking Corporation, as administrative agent, the lenders party thereto from time to time and any other persons party thereto from time to time (the 2021 Eureka Credit Facility). On March 29, 2023, Eureka entered into an amendment (the Eureka Amendment) to the 2021 Eureka Credit Facility. The Eureka Amendment replaced the London Interbank Offered Rate with the Secured Overnight Financing Rate as the benchmark rate for borrowings, including a credit spread adjustment of 0.10% for all applicable interest periods, as well as for daily swing line borrowings. Any reference to the 2021 Eureka Credit Facility as of any particular date shall mean the 2021 Eureka Credit Facility as in effect on such date.

As of June 30, 2023, and December 31, 2022, Eureka had approximately $315 million and $295 million, respectively, of borrowings outstanding under the 2021 Eureka Credit Facility. For the three and six months ended June 30, 2023, the maximum amount of outstanding borrowings under the 2021 Eureka Credit Facility at any time were approximately $315 million, the average daily balances were approximately $309 million and $303 million, respectively, and Eureka incurred interest at weighted average annual interest rates of approximately 7.7% and 7.4%, respectively. For the three and six months ended June 30, 2023, commitment fees of $0.1 million and $0.2 million, respectively, were paid to maintain credit availability under

the 2021 Eureka Credit Facility. For the three and six months ended June 30, 2022, the maximum amount of outstanding borrowings under the 2021 Eureka Credit Facility at any time were approximately $268 million and $280 million, respectively, the average daily balances were approximately $262 million and $269 million, respectively, and Eureka incurred interest at weighted average annual interest rates of approximately 3.5% and 3.2%, respectively. For the three and six months ended June 30, 2022, commitment fees of $0.2 million and $0.3 million, respectively, were paid to maintain credit availability under the 2021 Eureka Credit Facility.

2023 Senior Notes Redemption. On June 21, 2023 (the Redemption Date), EQM redeemed in full its remaining outstanding 4.75% Senior Notes due 2023 (the 2023 Notes) in the aggregate principal amount of $98.9 million, pursuant the Indenture, dated as of August 1, 2014, by and between EQM, the subsidiary guarantors party thereto and The Bank of New York Mellon Trust Company, N.A. (BNYMTC), as trustee, as supplemented by that certain Third Supplemental Indenture, dated as of June 25, 2018, by and between the EQM and BNYMTC, at a redemption price equal to 100% of the principal amount of the 2023 Notes, plus accrued and unpaid interest to, but not including, the Redemption Date. Upon the redemption by EQM of the 2023 Notes, the Third Supplemental Indenture was discharged and ceased to be of further effect except as to rights thereunder. EQM utilized cash on hand to effect payment of the redemption on the Redemption Date.

2022 Senior Notes. On June 7, 2022, EQM completed a private offering of $500 million aggregate principal amount of new 7.50% senior notes due 2027 (the 2027 Notes) and $500 million aggregate principal amount of new 7.50% senior notes due 2030 (the 2030 Notes and, together with the 2027 Notes, the 2022 Senior Notes) and received net proceeds from the offering of approximately $984.5 million inclusive of a discount of approximately $12.5 million and debt issuance costs of approximately $3.0 million.

EQM used the net proceeds from the offering of the 2022 Senior Notes and cash on hand to purchase (i) an aggregate principal amount of approximately $501.1 million of its then outstanding 2023 Notes pursuant to a tender offer for any and all of the outstanding 2023 Notes (the Any and All Tender Offer) and an open market purchase following the expiration of the Any and All Tender Offer, and (ii) an aggregate principal amount of $300 million of its outstanding 6.00% notes due 2025 (2025 Notes), and an aggregate principal amount of $200 million of its outstanding 4.00% notes due 2024 (2024 Notes), pursuant to tender offers (the Maximum Tender Offers, together with the Any and All Tender Offer, the 2022 Tender Offers) for the 2025 Notes and 2024 Notes, which such Maximum Tender Offers reflected a maximum aggregate principal amount of 2025 Notes and 2024 Notes to be purchased of $500 million (such amount, the Aggregate Maximum Principal Amount).

2022 Tender Offers. On June 6, 2022, the Any and All Tender Offer expired and, on June 7, 2022 and June 9, 2022, EQM purchased an aggregate principal amount of approximately $496.8 million of 2023 Notes at an aggregate cost of approximately $506.7 million pursuant to the Any and All Tender Offer. On June 10, 2022, which was after the closing of the Any and All Tender Offer, EQM also repurchased an aggregate principal amount of approximately $4.3 million of 2023 Notes in the open market at an aggregate cost of approximately $4.4 million. On June 13, 2022, which was the early tender deadline for the Maximum Tender Offers, the Aggregate Maximum Principal Amount was fully subscribed by the 2024 Notes and 2025 Notes then tendered, and, on June 14, 2022, EQM purchased an aggregate principal amount of $200 million of 2024 Notes and $300 million of 2025 Notes at an aggregate cost of approximately $509 million (inclusive of the applicable early tender premium for the 2024 Notes and 2025 Notes described in that certain Offer to Purchase of EQM dated May 31, 2022, as amended).

During the three and six months ended June 30, 2022, the Company incurred a loss on extinguishment of debt of approximately $24.9 million related to the payment of the 2022 Tender Offers and open market repurchase premiums and fees, and write off of the respective unamortized discounts and financing costs associated with the purchase of portions of 2023, 2024 and 2025 Notes in the 2022 Tender Offers. This amount is included in the loss on extinguishment of debt line on the statements of consolidated comprehensive income.

As of June 30, 2023, EQM and Eureka were in compliance with all debt provisions and covenants.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value MeasurementsAssets Measured at Fair Value on a Recurring Basis. The Company records derivative instruments at fair value on a gross basis in its consolidated balance sheets. The EQT Global GGA provides for potential cash bonus payments payable by EQT to the Company during the period beginning on the first day of the calendar quarter in which the MVP full in-service date occurs through the calendar quarter ending December 31, 2024 (the Henry Hub cash bonus payment provision). The potential cash bonus payments are conditioned upon the quarterly average of certain Henry Hub natural gas prices exceeding certain price thresholds. The Henry Hub cash bonus payment provision is accounted for as a derivative instrument and recorded at its estimated fair value using a Monte Carlo simulation model. Significant inputs used in the fair value measurement include NYMEX Henry Hub natural gas futures prices as of the date of valuation, probability-weighted assumptions regarding MVP

project completion, risk-free interest rates based on U.S. Treasury rates, expected volatility of NYMEX Henry Hub natural gas futures prices and an estimated credit spread of EQT. The probability-weighted assumptions regarding MVP project completion utilizing internally developed methodologies, and the expected volatility of NYMEX Henry Hub natural gas futures prices used in the valuation methodology represent significant unobservable inputs causing the Henry Hub cash bonus payment provision to be designated as a Level 3 fair value measurement. An expected average volatility of approximately 56.0% was utilized in the valuation model, which is based on market-quoted volatilities of relevant NYMEX Henry Hub natural gas forward prices.

As of June 30, 2023 the fair value of the Henry Hub cash bonus payment provision was $33.9 million, of which $29.5 million was recorded in other current assets and $4.4 million was recorded in other assets on the Company's consolidated balance sheets. As of December 31, 2022, the fair value of the Henry Hub cash bonus payment provision was $23.0 million which was recorded in other assets on the Company's consolidated balance sheets. During the three and six months ended June 30, 2023, the Company recognized gains of $19.4 million and $10.9 million, respectively, and during the three and six months ended June 30, 2022, the Company recognized gains of $3.7 million and $5.3 million, respectively, representing the change in estimated fair value of the derivative instrument during the respective periods and are recorded in other income, net in the Company's statements of consolidated comprehensive income.

Other Financial Instruments. The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximate fair value due to the short maturity of the instruments. The carrying values of borrowings under the Amended EQM Credit Facility and the 2021 Eureka Credit Facility approximate fair value as the interest rates are based on prevailing market rates. As EQM's borrowings under its senior notes are not actively traded, their fair values are estimated using an income approach model that applies a discount rate based on prevailing market rates for debt with similar remaining time-to-maturity and credit risk; as such, their fair values are Level 2 fair value measurements. The fair value of the Preferred Interest is a Level 3 fair value measurement and is estimated using an income approach model that applies a market-based discount rate. As of June 30, 2023, and December 31, 2022, the estimated fair values of the Preferred Interest were approximately $92.5 million and $95.2 million, respectively, and the carrying values of the Preferred Interest were approximately $91.4 million and $94.3 million, respectively.

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Earnings Per Share	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per ShareThe Company excluded 31,125 and 32,506 (in thousands) of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards from the computation of diluted weighted average common shares outstanding for the three and six months ended June 30, 2023, respectively. The Company excluded 30,113 and 30,125 (in thousands) of weighted average anti-dilutive securities related to the Equitrans Midstream Preferred Shares and stock-based compensation awards from the computation of diluted weighted average common shares outstanding for the three and six months ended June 30, 2022, respectively.The Company grants Equitrans Midstream phantom units to non-employee directors that will be paid in Equitrans Midstream common stock upon the director's termination of service from the Company's Board of Directors. As there are no remaining service, performance or market conditions related to these awards, 745 and 674 (in thousands) Equitrans Midstream phantom units were included in the computation of basic and diluted weighted average common shares outstanding for the three and six months ended June 30, 2023, respectively, and 588 and 615 (in thousands) Equitrans Midstream phantom units were included in the computation of basic and diluted weighted average common shares outstanding for the three and six months ended June 30, 2022, respectively.

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Income Taxes

6 Months Ended

Jun. 30, 2023

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company's effective tax rate was 0.7% for the three months ended June 30, 2023 compared to 4.0% for the three months ended June 30, 2022. The Company's effective tax rate was (1.9)% for the six months ended June 30, 2023 compared to 4.8% for the six months ended June 30, 2022. The Company calculates the provision for income taxes for interim periods by applying an estimate of the annual effective tax rate for the full fiscal year to "ordinary" income or loss (income (loss) before income taxes excluding unusual or infrequently occurring items) for the periods. The effective tax rate was lower for the three and six months ended June 30, 2023 compared to the three and six months ended June 30, 2022 and lower compared to the statutory rate for the three and six months ended June 30, 2023 primarily due to the impact of projected AFUDC – equity on the MVP project and the impact of changes in the valuation allowance that limit tax benefits for the Company’s federal and state deferred tax assets, partially offset by state tax expense related to uncertain tax benefits. The effective tax rate for the three and six months ended June 30, 2022 was lower than the statutory rate primarily due to the impact of changes in the valuation allowances that limit tax benefits for the Company's federal and state deferred tax assets.

During the three months ended June 30, 2023, the Company determined it is more likely than not that approximately $2.6 million of tax benefits related to the deductibility of capitalized interest will not be recognized. Interest on unrecognized tax benefits was $0.2 million for the three and six months ended June 30, 2023, which was recorded as a component of income

tax expense. Within the next twelve months, it is reasonably possible that the amount of unrecognized tax benefits will decrease by approximately $0.9 million due to the expiration of statutes of limitation, which is anticipated to impact the effective tax rate.For the six months ended June 30, 2023, the Company believes that it is more likely than not that the benefit from a portion of its federal and state net operating loss (NOL) carryforwards, deferred tax assets related to interest disallowance under Internal Revenue Code Section 163(j), and certain state deferred tax assets, net of offsetting deferred tax liabilities, will not be realized and accordingly, the Company maintains related valuation allowances. For the six months ended June 30, 2023, the Company recorded approximately $39.4 million income tax benefit related to changes in valuation allowances because of decreases in federal and state deferred tax assets. As of June 30, 2023 and December 31, 2022, the valuation allowances related to federal and state deferred tax assets were approximately $117.3 million and $156.7 million, respectively.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022		Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 67,245	$ 60,791	[1]	$ 168,927	$ 155,909	[1]

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

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Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

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Financial Statements (Policies)

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation. References in these financial statements to Equitrans Midstream or the Company refer collectively to Equitrans Midstream Corporation and its consolidated subsidiaries for all periods presented, unless otherwise indicated.

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (GAAP) for interim financial information and with the requirements of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, these unaudited consolidated financial statements include all adjustments (consisting of only normal, recurring adjustments, unless otherwise disclosed in this Quarterly Report on Form 10-Q) necessary for a fair presentation of the financial position of the Company as of June 30, 2023, the results of its operations and equity for the three and six months ended June 30, 2023 and 2022 and its cash flows for the six months ended June 30, 2023 and 2022. The consolidated balance sheet at December 31, 2022 has been derived from the audited financial statements at that date, but does not include all of the information and notes required by GAAP for complete financial statements. This Quarterly Report on Form 10-Q should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2022, which includes all disclosures required by GAAP.

Due to, among other things, the seasonal nature of the Company's utility customer contracts, as well as producers’ well completion activities and varying needs for fresh and produced water (which are primarily driven by horizontal lateral lengths and the number of completion stages per well), the interim statements for the three and six months ended June 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023.

For further information, refer to the Company's consolidated financial statements and related notes in the Company's Annual Report on Form 10-K for the year ended December 31, 2022, as well as Part I, "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations" contained herein.

Recently Issued Accounting Standards

Recently Issued Accounting Standards.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848), which provides practical expedients for contract modifications and certain hedging relationships associated with the transition from reference rates that are expected to be discontinued. This guidance is applicable to the calculation of each dividend following March 31, 2024 for the Equitrans Midstream Preferred Shares pursuant to the Company's Second Amended and Restated Articles of Incorporation, as well as any Company contracts that use the London Inter-Bank Offered Rate as a reference rate. In December 2022, the FASB also issued ASU 2022-06, which amended Topic 848 to defer the sunset date to apply the practical expedients until December 31, 2024. The Company adopted this standard on April 1, 2023 and it had no impact on the Company's financial statements and related disclosures.

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Financial Information by Business Segment (Tables)

6 Months Ended

Jun. 30, 2023

Segment Reporting [Abstract]

Schedule of Revenue from External Customers and Operating Income and Reconciliation to Net Income

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(Thousands)
Revenues from customers:
Gathering	$	210,194	$	225,314	$	420,946	$	445,104
Transmission	92,540		91,078		231,446		201,873
Water	15,735		12,219		42,414		23,780
Total operating revenues	$	318,469	$	328,611	$	694,806	$	670,757
Operating income (loss):
Gathering	$	81,020	$	119,564	$	185,314	$	233,416
Transmission	48,451		60,841		147,373		145,403
Water	530		3,120		12,903		1,195
Headquarters (a)	(467)		(227)		(812)		(616)
Total operating income	$	129,534	$	183,298	$	344,778	$	379,398
Reconciliation of operating income to net income:
Equity income (b)	$	23,686	$	39	$	23,808	$	43
Other income, net (c)	19,809		4,148		11,707		5,659
Loss on extinguishment of debt	—		(24,937)		—		(24,937)
Net interest expense	(103,644)		(95,117)		(208,601)		(188,238)
Income tax expense (benefit)	465		2,692		(3,319)		8,293
Net income	$	68,920	$	64,739	$	175,011	$	163,632

(a)Includes certain unallocated corporate expenses.

(b)Equity income is included in the Transmission segment.

(c)Includes unrealized gains on derivative instruments recorded in the Gathering segment.

Schedule of Segment Assets

	June 30, 2023		December 31, 2022
	(Thousands)
Segment assets:
Gathering	$	7,597,998	$	7,610,233
Transmission (a)	2,590,514		2,333,896
Water	214,005		218,680
Total operating segments	10,402,517		10,162,809
Headquarters, including cash	324,496		282,776
Total assets	$	10,727,013	$	10,445,585

(a)The equity method investment in the MVP Joint Venture is included in the Transmission segment.

Schedule of Depreciation and Amortization and Expenditures for Segment Assets

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(Thousands)
Depreciation:
Gathering	$	49,387	$	48,573	$	98,736	$	96,828
Transmission	13,904		13,904		27,792		27,798
Water	6,511		4,804		12,374		9,321
Headquarters	229		376		533		753
Total	$	70,031	$	67,657	$	139,435	$	134,700
Capital expenditures:
Gathering (a)	$	71,893	$	69,189	$	131,606	$	122,336
Transmission (b)	14,375		6,339		23,564		10,565
Water	11,148		22,526		22,224		32,091
Headquarters	—		1		—		13
Total (c)	$	97,416	$	98,055	$	177,394	$	165,005

(a)Includes capital expenditures related to the noncontrolling interest in Eureka Midstream Holdings, LLC (Eureka Midstream) of approximately $5.0 million and $8.2 million for the three and six months ended June 30, 2023, respectively, and approximately $8.7 million and $11.7 million for the three and six months ended June 30, 2022, respectively.

(b)Transmission capital expenditures do not include aggregate capital contributions made to the MVP Joint Venture for the MVP and MVP Southgate projects of approximately $36.0 million and $70.5 million for the three and six months ended June 30, 2023, respectively, and approximately $39.2 million and $111.8 million for the three and six months ended June 30, 2022, respectively.

(c)The Company accrues capital expenditures when the work has been completed but the associated bills have not yet been paid. Accrued capital expenditures are excluded from the statements of consolidated cash flows until they are paid. The net impact of non-cash capital expenditures, including the effect of accrued capital expenditures, transfers to/from inventory as assets are completed/assigned to a project and capitalized share-based compensation costs were $(1.1) million and $(5.5) million for the three and six months ended June 30, 2023, respectively, and $(6.2) million and $(1.9) million for the three and six months ended June 30, 2022, respectively.

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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue Information, By Segment

The tables below provide disaggregated revenue information by business segment.

	Three Months Ended June 30, 2023
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	141,737	$	82,247	$	9,389	$	233,373
Volumetric-based fee revenues	68,457		10,293		6,346		85,096
Total operating revenues	$	210,194	$	92,540	$	15,735	$	318,469
	Three Months Ended June 30, 2022
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	138,605	$	84,675	$	9,375	$	232,655
Volumetric-based fee revenues	86,709		6,403		2,844		95,956
Total operating revenues	$	225,314	$	91,078	$	12,219	$	328,611

	Six Months Ended June 30, 2023
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	281,808	$	183,969	$	18,764	$	484,541
Volumetric-based fee revenues (b)	139,138		47,477		23,650		210,265
Total operating revenues	$	420,946	$	231,446	$	42,414	$	694,806
	Six Months Ended June 30, 2022
	Gathering		Transmission		Water		Total
	(Thousands)
Firm reservation fee revenues (a)	$	271,202	$	187,545	$	15,127	$	473,874
Volumetric-based fee revenues	173,902		14,328		8,653		196,883
Total operating revenues	$	445,104	$	201,873	$	23,780	$	670,757

(a) Firm reservation fee revenues associated with Gathering included MVC unbilled revenues of approximately $2.4 million and $5.7 million for the three and six months ended June 30, 2023, respectively, and $6.2 million and $8.9 million for the three and six months ended June 30, 2022, respectively.

(b) For the six months ended June 30, 2023, volumetric-based fee revenues associated with Gathering and Transmission included one-time contract buyouts by a customer for approximately $5.0 million and $23.8 million, respectively.

Contract with Customer, Asset and Liability

The following table presents changes in the Company's unbilled revenue balance:

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Balance as of beginning of period	$	27,493	$	16,772
Revenue recognized in excess of amounts invoiced (a)	5,680		10,940
Minimum volume commitments invoiced (b)	(23,558)		(14,884)
Amortization (c)	(329)		(220)
Balance as of end of period	$	9,286	$	12,608

(a)Primarily includes revenues associated with MVCs that are generally included in firm reservation fee revenues within the Gathering and Water segments.

(b)Unbilled revenues are transferred to accounts receivable once the Company has an unconditional right to consideration from the customer.

(c)Amortization of capitalized contract costs paid to customers over the expected life of the agreement.

The following table presents changes in the Company's contract liability balances:

	Six Months Ended June 30,
	2023		2022
	(Thousands)
Balance as of beginning of period	$	973,087	$	822,416
Amounts recorded during the period (a)	165,011		176,743
Change in estimated variable consideration (b)	(3,392)		—
Amounts transferred during the period (c)	(3,835)		(537)
Balance as of end of period	$	1,130,871	$	998,622

(a)Includes deferred billed revenue during the six months ended June 30, 2023 and 2022 primarily associated with the EQT Global GGA.

(b)Change in estimated variable consideration represents the decrease in total deferred revenue due to changes in assumptions.

(c)Deferred revenues are recognized as revenue upon satisfaction of the Company's performance obligation to the customer.

Summary of Remaining Performance Obligations

The following table summarizes the estimated transaction price allocated to the Company's remaining performance obligations under all contracts with firm reservation fees, MVCs and/or ARCs as of June 30, 2023 that the Company will invoice or transfer from contract liabilities and recognize in future periods.

		2023(a)		2024		2025		2026		2027		Thereafter		Total
	(Thousands)
Gathering firm reservation fees		$	48,677	$	172,708	$	176,307	$	166,930	$	160,370	$	1,707,106	$	2,432,098
Gathering revenues supported by MVCs		230,638		440,716		464,165		496,478		488,261		3,172,196		5,292,454
Transmission firm reservation fees		176,820		400,788		392,544		391,489		392,679		3,139,671		4,893,991
Water revenues supported by ARCs		22,755		45,706		48,441		45,159		44,065		166,644		372,770
Total (b)		$	478,890	$	1,059,918	$	1,081,457	$	1,100,056	$	1,085,375	$	8,185,617	$	12,991,313

(a)    July 1, 2023 through December 31, 2023.

(b)    Includes assumptions regarding timing for placing certain projects in-service. Such assumptions may not be realized and delays in the in-service dates for projects have substantially altered, and additional delays may further substantially alter, the remaining performance obligations for certain contracts with firm reservation fees, MVCs and/or ARCs. The MVP Joint Venture is accounted for as an equity method investment and those amounts are not included in the table above.

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Stock-based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Detailed Information on MVP PSU Program Activity

The following table provides detailed information on the MVP PSU Program as of June 30, 2023:

MVP PSU Program	Non-vested Shares	Grant Date Fair Value (a)	Fair Value (Thousands)		Requisite Service Period	Unrecognized Compensation Cost (Thousands)
LTIP Participants	1,370,803	$9.59	$	13,146	25 months	$	3,109
Senior Executives T1	579,015	$9.59	5,553		25 months	1,333
Senior Executives T2	289,511	$9.59	2,776		37 months	1,351
Senior Executives T3	289,504	$9.59	2,776		49 months	1,700

(a)    Determined based upon the closing price of the Company's common stock on the day before the grant date.

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Financial Information by Business Segment - Narrative (Details)	6 Months Ended
	Jun. 30, 2023 segment lineOfBusiness
Segment Reporting [Abstract]
Number of operating segments | segment	3
Number of lines of business | lineOfBusiness	3

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Financial Information by Business Segment - Schedule of Segment Income (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022		Jun. 30, 2023		Jun. 30, 2022
Revenues from customers:
Operating revenues		$ 318,469	$ 328,611	[1]	$ 694,806		$ 670,757	[1]
Operating income (loss):
Total operating income		129,534	183,298	[1]	344,778		379,398	[1]
Reconciliation of operating income to net income:
Equity income	[2]	23,686	39	[1]	23,808	[3]	43	[1],[3],[4]
Other income, net		19,809	4,148	[1]	11,707		5,659	[1]
Loss on extinguishment of debt		0	(24,937)	[1]	0		(24,937)	[4]
Net interest expense		(103,644)	(95,117)	[1]	(208,601)		(188,238)	[1]
Income tax expense (benefit)		465	2,692	[1]	(3,319)		8,293	[1]
Net income		68,920	64,739	[1]	175,011		163,632	[1],[4]
Gathering
Revenues from customers:
Operating revenues		210,194	225,314		420,946		445,104
Transmission
Revenues from customers:
Operating revenues		92,540	91,078		231,446		201,873
Water
Revenues from customers:
Operating revenues		15,735	12,219		42,414		23,780
Operating segments | Gathering
Revenues from customers:
Operating revenues		210,194	225,314		420,946		445,104
Operating income (loss):
Total operating income		81,020	119,564		185,314		233,416
Operating segments | Transmission
Revenues from customers:
Operating revenues		92,540	91,078		231,446		201,873
Operating income (loss):
Total operating income		48,451	60,841		147,373		145,403
Operating segments | Water
Revenues from customers:
Operating revenues		15,735	12,219		42,414		23,780
Operating income (loss):
Total operating income		530	3,120		12,903		1,195
Headquarters
Operating income (loss):
Total operating income		$ (467)	$ (227)		$ (812)		$ (616)

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

[2] Represents equity income from Mountain Valley Pipeline, LLC (the MVP Joint Venture). See Note 4.

[3] Represents equity income from the MVP Joint Venture. See Note 4.

[4] Certain line items of the previously issued unaudited interim consolidated financial statements for the six months ended June 30, 2022 have been revised. See Note 1 for more information.

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Financial Information by Business Segment - Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Long-Lived Assets
Total assets	$ 10,727,013	$ 10,445,585
Operating segments
Long-Lived Assets
Total assets	10,402,517	10,162,809
Operating segments | Gathering
Long-Lived Assets
Total assets	7,597,998	7,610,233
Operating segments | Transmission
Long-Lived Assets
Total assets	2,590,514	2,333,896
Operating segments | Water
Long-Lived Assets
Total assets	214,005	218,680
Headquarters
Long-Lived Assets
Total assets	$ 324,496	$ 282,776

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Financial Information by Business Segment - Depreciation and Capital Expenditures for Segment Assets (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022		Jun. 30, 2023	Jun. 30, 2022
Segment Information
Depreciation	$ 70,031	$ 67,657	[1]	$ 139,435	$ 134,700	[1],[2]
Capital expenditures for segment assets	97,416	98,055		177,394	165,005
Capitalized share-based compensation cost	(1,100)	(6,200)		(5,500)	(1,900)
Operating segments | Gathering
Segment Information
Depreciation	49,387	48,573		98,736	96,828
Capital expenditures for segment assets	71,893	69,189		131,606	122,336
Operating segments | Gathering | Eureka Midstream Holdings, LLC
Segment Information
Capital expenditures for segment assets	5,000	8,700		8,200	11,700
Operating segments | Transmission
Segment Information
Depreciation	13,904	13,904		27,792	27,798
Capital expenditures for segment assets	14,375	6,339		23,564	10,565
Operating segments | Transmission | MVP Southgate Project
Segment Information
Capital expenditures for segment assets	36,000	39,200		70,500	111,800
Operating segments | Water
Segment Information
Depreciation	6,511	4,804		12,374	9,321
Capital expenditures for segment assets	11,148	22,526		22,224	32,091
Headquarters
Segment Information
Depreciation	229	376		533	753
Capital expenditures for segment assets	$ 0	$ 1		$ 0	$ 13

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

[2] Certain line items of the previously issued unaudited interim consolidated financial statements for the six months ended June 30, 2022 have been revised. See Note 1 for more information.

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Revenue from Contracts with Customers - Schedule of Disaggregated Revenue Information, by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022		Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue
Operating revenues	$ 318,469	$ 328,611	[1]	$ 694,806	$ 670,757	[1]
Contract Buyouts
Disaggregation of Revenue
Operating revenues				5,000	23,800
Gathering
Disaggregation of Revenue
Operating revenues	210,194	225,314		420,946	445,104
Gathering | MVC
Disaggregation of Revenue
Operating revenues	2,400	6,200		5,700	8,900
Transmission
Disaggregation of Revenue
Operating revenues	92,540	91,078		231,446	201,873
Water
Disaggregation of Revenue
Operating revenues	15,735	12,219		42,414	23,780
Firm reservation fee revenues
Disaggregation of Revenue
Operating revenues	233,373	232,655		484,541	473,874
Firm reservation fee revenues | Gathering
Disaggregation of Revenue
Operating revenues	141,737	138,605		281,808	271,202
Firm reservation fee revenues | Transmission
Disaggregation of Revenue
Operating revenues	82,247	84,675		183,969	187,545
Firm reservation fee revenues | Water
Disaggregation of Revenue
Operating revenues	9,389	9,375		18,764	15,127
Volumetric-based fee revenues
Disaggregation of Revenue
Operating revenues	85,096	95,956		210,265	196,883
Volumetric-based fee revenues | Gathering
Disaggregation of Revenue
Operating revenues	68,457	86,709		139,138	173,902
Volumetric-based fee revenues | Transmission
Disaggregation of Revenue
Operating revenues	10,293	6,403		47,477	14,328
Volumetric-based fee revenues | Water
Disaggregation of Revenue
Operating revenues	$ 6,346	$ 2,844		$ 23,650	$ 8,653

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

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Revenue from Contracts with Customers - Unbilled Revenue Rollforward (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Movement in Deferred Revenue [Roll Forward]
Balance as of beginning of period	$ 27,493	$ 16,772
Revenue recognized in excess of amounts invoiced	5,680	10,940
Minimum volume commitments invoiced	(23,558)	(14,884)
Amortization	(329)	(220)
Balance as of end of period	$ 9,286	$ 12,608

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Revenue from Contracts with Customers - Deferred Revenue Rollforward (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Change in Contract with Customer, Liability
Balance as of beginning of period	$ 973,087	$ 822,416
Amounts recorded during the period	165,011	176,743
Change in estimated variable consideration	(3,392)	0
Amounts transferred during the period	(3,835)	(537)
Balance as of end of period	$ 1,130,871	$ 998,622

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Revenue from Contracts with Customers - Summary of Remaining Performance Obligations (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 12,991,313
Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	4,893,991
Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	372,770
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	478,890
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01 | Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 176,820
Remaining performance obligations, expected timing	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01 | Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 22,755
Remaining performance obligations, expected timing	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 1,059,918
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 400,788
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 45,706
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 1,081,457
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 392,544
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 48,441
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 1,100,056
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 391,489
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 45,159
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 1,085,375
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 392,679
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 44,065
Remaining performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 8,185,617
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Transmission firm reservation fees
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 3,139,671
Remaining performance obligations, expected timing
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Water revenues supported by ARCs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 166,644
Remaining performance obligations, expected timing
Gathering firm reservation fees | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 2,432,098
Gathering firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 48,677
Remaining performance obligations, expected timing	6 months
Gathering firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 172,708
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 176,307
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 166,930
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 160,370
Remaining performance obligations, expected timing	1 year
Gathering firm reservation fees | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 1,707,106
Remaining performance obligations, expected timing
Gathering revenues supported by MVCs | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 5,292,454
Gathering revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 230,638
Remaining performance obligations, expected timing	6 months
Gathering revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 440,716
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 464,165
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 496,478
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 488,261
Remaining performance obligations, expected timing	1 year
Gathering revenues supported by MVCs | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | Gathering
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total	$ 3,172,196
Remaining performance obligations, expected timing

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Revenue from Contracts with Customers - Narrative (Details)	6 Months Ended
	Jun. 30, 2023
Gathering
Disaggregation of Revenue
Weighted average remaining term	13 years
Transmission firm reservation fees
Disaggregation of Revenue
Weighted average remaining term	12 years

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Investments in Unconsolidated Entity - Narrative (Details) $ in Millions	1 Months Ended				6 Months Ended
	Sep. 30, 2023 USD ($)	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2023 USD ($) mi	Jun. 30, 2023 USD ($) mi	Dec. 31, 2023	Apr. 06, 2023 USD ($)	Nov. 04, 2019 USD ($)	Apr. 30, 2018 mi
Con Edison | Maximum
Schedule of Equity Method Investments
Investment cap								$ 530.0
MVP Joint Venture | Beneficial Owner
Schedule of Equity Method Investments
Percentage of ownership interest					66.67%
MVP Project | Con Edison
Schedule of Equity Method Investments
Project target cost					$ 6,600.0
Variable Interest Entity, Not Primary Beneficiary | MVP Joint Venture | EQM
Schedule of Equity Method Investments
Ownership interest				47.30%	47.30%
Variable Interest Entity, Not Primary Beneficiary | MVP Joint Venture | EQM | Scenario, Forecast
Schedule of Equity Method Investments
Ownership interest						48.30%
Variable Interest Entity, Not Primary Beneficiary | MVP Project
Schedule of Equity Method Investments
Capital contribution payable to MVP Joint Venture				$ 209.6
Letter of credit outstanding				$ 219.7	$ 219.7
Variable Interest Entity, Not Primary Beneficiary | MVP Southgate Project
Schedule of Equity Method Investments
Ownership interest				47.20%	47.20%
Letter of credit outstanding							$ 14.2
Variable Interest Entity, Not Primary Beneficiary | MVP Holdco Project | Subsequent Event
Schedule of Equity Method Investments
Payments to acquire investments			$ 15.5
Variable Interest Entity, Not Primary Beneficiary | MVP Holdco Project | Scenario, Forecast
Schedule of Equity Method Investments
Payments to acquire investments	$ 138.8	$ 55.3
MVP
Schedule of Equity Method Investments
Length of pipeline (in miles) | mi				300	300
MVP | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments
Issuance of performance guarantee, remaining capital obligation, percentage				33.00%	33.00%
MVP Southgate Project
Schedule of Equity Method Investments
Length of pipeline (in miles) | mi									75

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Stock-based Compensation Plans - Narrative (Details) - MVP Performance Share Unit Program Awards - 2018 Plan - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Nov. 01, 2021	Jun. 30, 2023	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation cost		$ 16,800
Recognized compensation cost cumulative catch-up		14,100
Unrecognized compensation cost		7,500	$ 7,500
Weighted average vesting term			9 months 18 days
LTIP Participants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award, granted (in shares)	1,450,110
Share-based compensation award, will be paid, percentage			100.00%
Unrecognized compensation cost		$ 3,109	$ 3,109
Weighted average vesting term			25 months
LTIP Participants | Not Later Than 90 Days After the In-Service Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award, will be paid, percentage			50.00%
LTIP Participants | Not Later Than 30 Days After the First Anniversary of the In-Service Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award, will be paid, percentage			25.00%
LTIP Participants | Not Later Than 30 Days After the Second Anniversary of the in-service Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award, will be paid, percentage			25.00%
Senior Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation award, granted (in shares)	1,158,030

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Stock-based Compensation Plans - MVP PSU Program Activity (Details) - MVP Performance Share Unit Program Awards - 2018 Plan $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite Service Period	9 months 18 days
Unrecognized Compensation Cost (Thousands)	$ 7,500
LTIP Participants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Shares (in shares) | shares	1,370,803
Grant Date Fair Value (in dollars per share) | $ / shares	$ 9.59
Fair Value (Thousands)	$ 13,146
Requisite Service Period	25 months
Unrecognized Compensation Cost (Thousands)	$ 3,109
Senior Executives T1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Shares (in shares) | shares	579,015
Grant Date Fair Value (in dollars per share) | $ / shares	$ 9.59
Fair Value (Thousands)	$ 5,553
Requisite Service Period	25 months
Unrecognized Compensation Cost (Thousands)	$ 1,333
Senior Executives T2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Shares (in shares) | shares	289,511
Grant Date Fair Value (in dollars per share) | $ / shares	$ 9.59
Fair Value (Thousands)	$ 2,776
Requisite Service Period	37 months
Unrecognized Compensation Cost (Thousands)	$ 1,351
Senior Executives T3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Shares (in shares) | shares	289,504
Grant Date Fair Value (in dollars per share) | $ / shares	$ 9.59
Fair Value (Thousands)	$ 2,776
Requisite Service Period	49 months
Unrecognized Compensation Cost (Thousands)	$ 1,700

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Debt - Amended EQM Revolving Credit Facility and 2019 EQM Term Loan Agreement (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Debt Instrument
Letters of credit outstanding	$ 570,000,000		$ 570,000,000		$ 535,000,000
EQM Credit Facility
Debt Instrument
Maximum borrowing capacity	2,160,000,000		2,160,000,000
EQM Credit Facility | EQM Midstream Partners, LP | Revolving Credit Facility
Debt Instrument
Borrowings outstanding	255,000,000		255,000,000		240,000,000
Letters of credit outstanding	$ 220,700,000		$ 220,700,000		$ 234,900,000
Weighted average annual interest rate	7.90%	3.50%	7.70%	3.00%
EQM Credit Facility | Line of Credit | EQM Midstream Partners, LP
Debt Instrument
Maximum borrowing capacity	$ 1,550,000,000		$ 1,550,000,000
Current borrowing capacity	600,000,000		600,000,000
Maximum amount of short term loans outstanding	255,000,000	$ 180,000,000	315,000,000	$ 280,000,000
Average daily balance of short term loans outstanding	191,000,000	126,000,000	225,000,000	193,000,000
Payment commitment fees	$ 2,300,000	$ 2,000,000	4,400,000	$ 3,800,000
EQM Credit Facility | Letter of credit | EQM Midstream Partners, LP
Debt Instrument
Maximum amount of short term loans outstanding			$ 0

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Debt - Eureka Credit Facility (Details) - Eureka Credit Facility - Line of Credit - Eureka Midstream, LLC - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Mar. 29, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	May 13, 2021
Debt Instrument
Maximum borrowing capacity							$ 400.0
Credit spread adjustment	0.10%
Borrowings outstanding		$ 315.0		$ 315.0		$ 295.0
Maximum amount of short term loans outstanding		315.0	$ 268.0	315.0	$ 280.0
Average daily balance of short term loans outstanding		$ 309.0	$ 262.0	$ 303.0	$ 269.0
Weighted average annual interest rate		7.70%	3.50%	7.40%	3.20%
Payment commitment fees		$ 0.1	$ 0.2	$ 0.2	$ 0.3

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Debt - 2023 Senior Notes Redemption (Details) - 4.75% Senior Notes Due 2023 - Senior notes $ in Millions	Jun. 21, 2023 USD ($)
Debt Instrument
Interest rate	4.75%
Debt principal amount redeemed	$ 98.9
Debt instrument, redemption price, percentage of principal amount redeemed	100.00%

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Debt - 2022 Senior Notes (Details) - Senior notes - USD ($) $ in Millions	Jun. 07, 2022	Jun. 21, 2023	Jun. 14, 2022	Jun. 10, 2022	Jun. 09, 2022
7.50% Senior Notes Due 2027
Debt Instrument
Principal	$ 500.0
Interest rate	7.50%
7.50% Senior Notes Due 2030
Debt Instrument
Principal	$ 500.0
Interest rate	7.50%
2022 Senior Notes
Debt Instrument
Net proceeds from offering	$ 984.5
Discount	12.5
Debt issuance costs	3.0
2022 Senior Notes | EQT Midstream Partners LP
Debt Instrument
Principal	501.1
4.75% Senior Notes Due 2023
Debt Instrument
Interest rate		4.75%
4.75% Senior Notes Due 2023 | EQT Midstream Partners LP
Debt Instrument
Principal				$ 4.3	$ 496.8
Debt issuance costs				$ 4.4	$ 506.7
6.00% Senior Notes Due 2025 | EQT Midstream Partners LP
Debt Instrument
Principal	$ 300.0		$ 300.0
Interest rate	6.00%
4.00% Senior Notes Due 2024 | EQT Midstream Partners LP
Debt Instrument
Principal	$ 200.0		200.0
Interest rate	4.00%
4.00% Senior Notes Due 2024 and 6.00% Senior Notes Due 2025 | EQT Midstream Partners LP
Debt Instrument
Principal	$ 500.0
Debt issuance costs			$ 509.0

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Debt - 2022 Tender Offers (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022		Jun. 30, 2023	Jun. 30, 2022		Jun. 14, 2022	Jun. 10, 2022	Jun. 09, 2022	Jun. 07, 2022
Debt Instrument
Loss on extinguishment of debt	$ 0	$ 24,937	[1]	$ 0	$ 24,937	[2]
4.75% Senior Notes Due 2023 | Senior notes | EQT Midstream Partners LP
Debt Instrument
Principal								$ 4,300	$ 496,800
Debt issuance costs								$ 4,400	$ 506,700
Loss on extinguishment of debt		$ 24,900			$ 24,900
4.00% Senior Notes Due 2024 | Senior notes | EQT Midstream Partners LP
Debt Instrument
Principal							$ 200,000			$ 200,000
6.00% Senior Notes Due 2025 | Senior notes | EQT Midstream Partners LP
Debt Instrument
Principal							300,000			300,000
4.00% Senior Notes Due 2024 and 6.00% Senior Notes Due 2025 | Senior notes | EQT Midstream Partners LP
Debt Instrument
Principal										$ 500,000
Debt issuance costs							$ 509,000

[1] Certain line items of the previously issued unaudited interim consolidated financial statements for the three and six months ended June 30, 2022 have been revised. See Note 1 for more information.

[2] Certain line items of the previously issued unaudited interim consolidated financial statements for the six months ended June 30, 2022 have been revised. See Note 1 for more information.

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Fair Value Measurements (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Gain on derivative instrument	$ 19.4	$ 3.7	$ 10.9	$ 5.3
EQM | Fair Value | Level 3 | EES
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Preferred interest	92.5		92.5		$ 95.2
EQM | Carrying Value | Level 3 | EES
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Preferred interest	91.4		91.4		94.3
Henry Hub cash payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, at fair value	33.9		33.9		$ 23.0
Henry Hub cash payment | Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, at fair value	29.5		29.5
Henry Hub cash payment | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, at fair value	$ 4.4		$ 4.4
Market quoted volatility | Volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Volatility rate	0.560		0.560

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Earnings Per Share - Narrative (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Class of Stock
Potentially dilutive securities (in shares)	31,125	30,113	32,506	30,125
Phantom Share Units (PSUs)
Class of Stock
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	745	588	674	615

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Effective tax rate	0.70%	4.00%	(1.90%)	4.80%
Tax benefits related to the deductibility of capitalized interest will not be recognized	$ 2.6
Unrecognized tax benefits, interest on income taxes expense	0.2		$ 0.2
Unrecognized tax benefits that would impact effective tax rate	0.9		0.9
Income tax expense related to changes in valuation allowances			39.4
Valuation allowance	$ 117.3		$ 117.3		$ 156.7