 CANONSBURG, Pa.--BUSINESS WIRE-- ETRN--Equitrans Midstream Corporation NYSE: ETRN will release its first quarter 2021 earnings on Tuesday, May 4, 2021 and will also host a conference call with analysts and investors at 10:30 am ET. A brief QA session for ETRN security analysts will immediately follow the results discussion. Call Access: All participants must pre-register online, in advance of the call. Upon completion, registered participants will receive a confirmation email that includes 