Sec Form 4 Filing - Kennedy Michael N. @ Antero Midstream Corp - 2022-04-15

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Kennedy Michael N. 2. Issuer Name and Ticker or Trading Symbol Antero Midstream Corp [ AM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) 1615 WYNKOOP STREET 3. Date of Earliest Transaction (MM/DD/YY) 04/15/2022 (Street) DENVER, CO80202 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common stock, par value $0.01 per share 04/15/2022 F 15,148( 1 ) D $ 11.28 904,733( 2 ) D Common stock, par value $0.01 per share 04/15/2022 A 216,090( 3 ) A $ 0 1,120,823( 4 ) D Common stock, par value $0.01 per share 04/18/2022 M 45,904 A 1,166,727( 4 ) D Common stock, par value $0.01 per share 04/18/2022 F 20,189( 6 ) D $ 11.26 1,146,538( 4 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Performance Share Units ( 5 ) 04/18/2022 M 45,904 ( 5 ) ( 5 ) Common Stock, par value $0.01 45,904 ( 5 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Kennedy Michael N. 1615 WYNKOOP STREET DENVER, CO80202 X See Remarks Signatures /s/ Yvette K. Schultz, as attorney-in-fact for Michael N. Kennedy 04/19/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )In connection with the vesting and settlement of restricted stock units through the issuance of common stock ("Common Stock") of Antero Midstream Corporation (the "Issuer") pursuant to the Antero Midstream Corporation Long Term Incentive Plan (the "Plan"), the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on April 14, 2022. ( 2 )Includes 190,066 shares of Common Stock subject to previously granted restricted stock unit awards that remain subject to vesting. ( 3 )Reflects the grant of restricted stock units pursuant to the Plan which vest as to 1/3 of the total amount granted on each of the first three anniversaries of April 15, 2022, subject to continued employment through each vesting date. ( 4 )Includes 406,156 shares of Common Stock subject to previously granted restricted stock unit awards that remain subject to vesting. ( 5 )Each performance share unit ("PSU") represented a contingent right to receive one share of Common Stock. On April 18, 2022, the Compensation Committee of the Issuer certified performance with respect to these PSUs originally granted on April 15, 2019, which vested based on the Issuer's return on invested capital over a three year period. ( 6 )In connection with the vesting and settlement of PSUs through the issuance of Common Stock pursuant to the Plan, the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on April 18, 2022.

Remarks: Senior Vice President - Finance

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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