X0508 4 2024-06-27 0001747009 Equitrans Midstream Corp ETRN 0001784163 Pietrandrea Brian P. 2200 ENERGY DRIVE CANONSBURG PA 15317 1 VP and CAO 0 Common Stock 2024-06-27 4 A 0 11765 0 A 89629 D Common Stock 2024-06-27 4 F 0 3588 13.21 D 86041 D Deferred Stock Units 2024-06-27 4 A 0 11765 0 A Common Stock 11765 11765 D On June 27, 2024, tranche 1 of the performance awards under the Company's 2021 MVP Performance Share Unit Award Program (2021 MVP Program) vested and were paid in Company common stock. Includes an aggregate of 495 shares purchased since the last applicable report through the Equitrans Midstream Corporation Employee Stock Purchase Plan. The Company, consistent with its practice, withheld shares to satisfy the tax liability associated with the vesting of the awards under the 2021 MVP Program. Each deferred stock unit is the economic equivalent of one share of common stock. Deferred stock units representing tranches 2 and 3 of performance awards under the 2021 MVP Program will vest and be paid out in the form of common stock in two equal installments on June 11, 2025 and June 11, 2026, respectively. /s/ Lisa M. Lind, Attorney-in-Fact for Brian P. Pietrandrea 2024-07-01