Equitrans Midstream Corporation announced on behalf of its wholly owned subsidiary, EQM Midstream Partners, LP (the Partnership), that the Partnership's previously announced cash tender offer (the Any and All Tender Offer) for any and all of its outstanding 4.750% Notes due 2023 (the Any and All Notes) expired at 5:00 p.m., New York City time, on June 6, 2022. According to information provided by D.F. King & Co. Inc., the tender and information agent for the Any and All Tender Offer, $494,822,000 aggregate principal amount of the Any and All Notes were validly tendered and not validly withdrawn prior to or at the expiration of the Any and All Tender Offer.

This amount excludes $5,454,000 aggregate principal amount of the Any and All Notes tendered pursuant to the guaranteed delivery procedures described in the Offer to Purchase, dated May 31, 2022 (the Offer to Purchase), and the related notice of guaranteed delivery provided in connection with the Any and All Tender Offer, which remain subject to the holders' performance of the delivery requirements under such procedures. The obligation of the Partnership to accept any Any and All Notes tendered and to pay the consideration for the Any and All Notes is subject to satisfaction or waiver of certain conditions and other terms set solely in the Offer to Purchase. If the conditions are satisfied or waived, the Partnership expects to pay for such Any and All Notes on June 7, 2022 (the Any and All Settlement Date), or, for Any and All Notes validly tendered pursuant to the guaranteed delivery procedures set in the Offer to Purchase, June 9, 2022.

Holders of Any and All Notes that validly tendered (including pursuant to the guaranteed delivery procedures set in the Offer to Purchase) and did not validly withdraw their Any and All Notes prior to the expiration of the Any and All Tender Offer will receive total consideration of $1,020 for each $1,000 principal amount of Any and All Notes tendered and accepted for payment, plus accrued but unpaid interest up to but not including the Any and All Settlement Date. The Partnership intends to fund the purchase of the Any and All Notes with the proceeds from its recently priced notes offering, which is anticipated to close on June 7, 2022, along with cash on hand and/or borrowings under EQM's Third Amended and Restated Credit Agreement, dated as of October 31, 2018 (as amended).