On February 23, 2022, Margaret K. Dorman notified Equitrans Midstream Corporation that she will not stand for re-election to the company's Board of Directors at the company's 2022 annual meeting of shareholders, scheduled to be held on April 26, 2022 (the 2022 annual meeting). Ms. Dorman will continue to serve as a member of the Board and on the Board's Corporate Governance and Management Development and Compensation committees until the 2022 Annual Meeting, when her current term will expire.