This 2023 Corporate Sustainability Report of Equitrans Midstream Corporation may contain or incorporate by reference certain forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and Section 27A of the Securities Act of 1933, as amended. 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,” “potential,” “focused,” “forecast,” “approximate,” “expect,” “project,” “intend,” “plan,” “believe,” “target,” “goal,” “objective,” “outlook,” “seek,” “strive,” “view,” “continue,” “guidance,” “scheduled,” “position,” “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 herein include express or implied expectations of plans, strategies, objectives, and growth and anticipated financial and operational performance of Equitrans and its affiliates; potential future application and efficacy of Equitrans’ practices, standards, processes, policies and procedures; the future resiliency of Equitrans’ business, including in a lower-carbon economy, and role of natural gas as a component of energy strategy; Equitrans’ ability to execute on its strategy and achieve related benefits; Equitrans’ ability to execute against its crisis management plan; Equitrans’ ability to bring in-service certain projects and related timing for certain projects; Equitrans’ future and continuing ability to execute operationally in accordance with its vision, values and sustainability framework and impact thereof; Equitrans’ ability to achieve, and create value from, its environmental, social and governance (ESG), sustainability and other targets and aspirations (including targets and aspirations set forth in its climate policy) and timing and means for doing so; Equitrans’ ability to identify the most impactful ESG initiatives; expected annualized emission reductions from a certain methane reduction project undertaken in 2021 and 2022; the provision of assurance through an environmental management system; emission estimates; potential effects of legislation or regulation and Equitrans’ future ability to comply with applicable legislation and regulation; potential effects of extraordinary weather events; the ultimate financial, business, reputational and/or operational impacts resulting, directly or indirectly, from the Rager Mountain natural gas storage field incident, including estimates of natural gas volumes vented which may be associated with such incident, as well as timing for completing the root cause analysis and ability to return the field to injection operations; the effectiveness of Equitrans’ information technology and operational technology systems and practices to detect and defend against evolving cyberattacks; and potential future modifications to baseline greenhouse gas inventory. The forward-looking statements included in this report involve risks and uncertainties that could cause actual results to differ materially from projected results. Accordingly, readers of this report, including investors, should not place undue reliance on forward-looking statements as a prediction of actual results. Equitrans has based these forward-looking statements on management’s current expectations and assumptions about future events. While Equitrans considers these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory, judicial, and other risks and uncertainties, many of which are difficult to predict and are beyond Equitrans’ control. The risks and uncertainties that may affect the operations, performance and results of Equitrans’ business and forward-looking statements include, but are not limited to, those set forth under “Item 1A. Risk Factors” and “Cautionary Statements” in Equitrans’ Annual Report on Form 10-K for the year ended December 31, 2022, as updated by Equitrans’ subsequent Quarterly Reports on Form 10-Q. Any forward-looking statement speaks only as of the date on which such statement is made and Equitrans does not intend to correct or update any forward-looking statement, unless required by securities law, whether as a result of new information, future events or otherwise.