Co. #22473 DIVIDEND REINVESTM EN T AND DIRECT STOCK PURCHAS E PLAN FOR SHARES OF EQUITRANS MIDSTREAM CORPORATION ENROLLMENT APPLICATION I (We) hereby appoint American Stock Transfer & Trust Company, LLC as my (our ) Agent under the terms and conditions of the Plan, as described in the Brochure of the Plan which accompanied this form, to receive cash payments and apply them to the purchase of shares of EQUITRANS MIDSTREAM CORPORATION Common Stock as indicated below. NO INTEREST WILL BE PAID ON THE FUNDS HELD PENDING INVESTMENT. This form, when completed and signed, should be mailed with your check in the blue envelope provided. Please affix postage to ensure proper processing. If you do not have the envelope, mail your check and the form to: EQUITRANS MIDSTREAM CORPORATION c/o American Stock Transfer & Trust Company, LLC P.O. Box 922, Wall Street Station, New York, New York 10269-0560 Attn: Plan Administration Department If your name is preprinted above, it is for mailing purposes only. Please complete one of the boxes below for the exact account registration. SOCIAL SECURITY OR TAXPAYER IDENTIFICATION NUMBER I hereby warrant, under penalty of perjury, that the number provided above is correct. ACCOUNT ADDRESS STREET CITY STATE ZIP CODE SIGNATURE(s) All Joint Owners Must Sign MINIMUM INVESTMENT IS $50.00 FOR STOCKHOLDERS OF RECORD AND CURRENT PLAN PARTICIPANTS MAXIMUM INVESTMENT IS $10,000.00 PER CALENDAR MONTH ATTACHED IS A CHECK FOR $ EQUITRANS MIDSTREAM CORPORATION. App. 11-1-2018 FOR AUTOMATIC MONTHLY DEDUCTIONS, SEE REVERSE Please enroll this account as follows: Check one box only (). If you do not check any box, then FULL DIVIDEND REINVESTMENT will be assumed. FULL DIVIDEND REINVESTMENT Reinvest all dividends for this account. PARTIAL DIVIDEND REINVESTMENT Reinvest dividends on shares held by me in certificate form and on all shares held by you as Agent and pay dividends in cash on all remaining shares held by me in certificate form. You must reinvest at least 10% of your dividend distribution each dividend period. CASH PAYMENTS ONLY (NO DIVIDEND REINVESTMENT) All dividends will be paid in cash. X

I (W e) hereb y authori ze Am erica n Stock Transfer & Trus t Company, LLC to m ak e monthl y autom atic transfers of funds from m y (our) checki ng or savi ngs account in the amount stated bel ow. T his monthl y deducti on will be used to purchase shares of E QU IT R A N S MID S T R EA M C OR P OR A T ION C ommon Stock for m y (our) E QU ITR ANS MID STR EA M C ORP ORAT ION P lan account. 1. Indicate the Type of A ccount : C hecki ng or S avi ngs. 2. P ri nt the com pl et e B ank Account N umber. 3. P ri nt the nam e on B ank Account as i t appears on your bank statem ent. 4. P ri nt the com pl et e name of your Fi nancial Insti tuti on, incl udin g the branch name and address. 5. P ri nt the ABA N umber (Bank N umber ) from your check or savings deposit sli p. See the sam pl e bel ow for the locati o n of the ABA N umber. 6. Am ount of autom ati c m onthl y deducti on: Indicate the m onthl y amount authori zed to be transferre d from you r account. The mi nim um is $50 per month and the maxim um is $10,000 per month from your checki ng or Signature(s) savi ngs account to purchas e E Q U I T R A N S M I D S T R E A M C O R P O R A T I O N C omm on Stock. Please enclose a copy of a VOIDED check or savings deposit slip to verify banking information. Da ytime Date P hone Num ber FILL IN THE INFORMATION BELOW FOR STOCK PURCHASES USING AUTOMATIC MONTHLY DEDUCTIONS. Please Print All Items 1. Type of Account Checking Savings 2. Bank Account Number 3. Name on Bank Account 4. Financial Institution Branch Name Branch Street Address Branch City, State and Zip Code 5. 6. $ABA Number Amount of Automatic Deduction PLEASE CONFIRM ITEMS 2 AND 5 WITH YOUR BANK PRIOR TO SUBMITTING THIS APPLICATION. Name on Bank Account $ ORDER OF Financial Institution and Branch information EQUITRANS MIDSTREAM CORPORATION Enroll. App. 11-1-2018 Bank Account Number ABA Number JOHN A. DOE 20 MARY B. DOE 123 YOUR STREET ANYWHERE, U.S.A. 1234563-858 670 PAY TO THE DOLLARS First National Bank of Anywhere 123 Main Street Anywhere, U.S.A. 12345 FORSAMPLE (NON-NEGOTIABLE) COMPLETE THIS PART ONLY IF YOU WANT AUTOMATIC MONTHLY DEDUCTIONS