Antero Midstream (AM) grants 32,651 RSUs and withholds shares for tax

Rhea-AI Filing Summary

Antero Midstream Corp executive Justin J. Agnew reported equity compensation and related tax withholding. He received a grant of 32,651 restricted stock units under the company’s long-term incentive plan, which are scheduled to vest in three equal installments on each of the first three anniversaries of March 7, 2026, subject to continued employment.

In connection with RSUs vesting and settling into common stock, the company withheld 15,499 shares at a price of $22.97 per share to cover his tax obligations, rather than these being open-market sales. After these transactions, Agnew directly holds 208,895 shares of common stock, including 64,061 shares underlying previously granted RSUs that are still subject to vesting.

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Agnew Justin J.

(Last) (First) (Middle)

1615 WYNKOOP STREET

(Street)

DENVER CO 80202

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Antero Midstream Corp [ AM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See Remarks

3. Date of Earliest Transaction (Month/Day/Year)
03/07/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	03/07/2026		A		32,651(1)	A	$0.00	224,394(2)	D
Common stock, par value $0.01 per share	03/07/2026		F		15,499(3)	D	$22.97	208,895(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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Reflects the grant of restricted stock units ("RSUs") pursuant to the Amended and Restated Antero Midstream Corporation Long Term Incentive Plan (the "Plan") which vest as to 1/3 of the total amount granted on each of the first three anniversaries of March 7, 2026, generally subject to continued employment through each vesting date.

2. Includes 99,299 shares of common stock, par value $0.01 per share ("Common Stock"), of Antero Midstream Corporation (the "Issuer") subject to previously granted RSUs that remain subject to vesting.

3. In connection with the vesting and settlement of RSUs through the issuance of Common Stock pursuant to the Plan, the Issuer withheld shares of 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 March 6, 2026.

4. Includes 64,061 shares of Common Stock subject to previously granted RSUs that remain subject to vesting.

Remarks:

Chief Financial Officer and Vice President - Finance & Investor Relations

	/s/ Yvette K. Schultz, as attorney-in-fact for Justin J. Agnew	03/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did Justin J. Agnew report for Antero Midstream (AM)?

Justin J. Agnew reported a grant of 32,651 restricted stock units and a related tax-withholding share disposition. The company withheld 15,499 shares of common stock to satisfy tax obligations arising from RSU vesting and settlement, leaving him with 208,895 directly held shares after these actions.

How do Justin J. Agnew’s new Antero Midstream RSUs vest?

The 32,651 restricted stock units vest in three equal installments. One-third of the award vests on each of the first three anniversaries of March 7, 2026, and each vesting tranche generally requires Justin J. Agnew to remain employed through the applicable vesting date.

Were Justin J. Agnew’s Antero Midstream share dispositions open-market sales?

The reported share disposition was for tax withholding, not an open-market sale. Antero Midstream withheld 15,499 shares of common stock that would otherwise have been issued, using them to cover Agnew’s tax obligations tied to RSU vesting under the company’s long-term incentive plan.

How many Antero Midstream shares does Justin J. Agnew hold after these transactions?

Following the RSU grant and tax-withholding transaction, Justin J. Agnew directly holds 208,895 shares of Antero Midstream common stock. This figure includes 64,061 shares underlying previously granted restricted stock units that remain unvested and subject to future vesting conditions under the incentive plan.

What role do restricted stock units play in Antero Midstream (AM) executive pay?

Restricted stock units form part of equity-based compensation for executives at Antero Midstream. In this case, Justin J. Agnew received 32,651 RSUs under the Amended and Restated Long Term Incentive Plan, with vesting spread over three years and subject to ongoing employment requirements.