What are performance share units mentioned in the Antero Midstream (AM) Form 4?

The performance share units each represented a contingent right to receive one Antero Midstream common share. They vested based on the company’s return on invested capital over a three-year period, with performance certified and settlement authorized on February 24, 2026.

Stock award and tax share withholding for Antero Midstream (AM)

Filing Impact

(Very High)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Antero Midstream Corp director and officer Michael N. Kennedy reported equity compensation activity in company common stock. He acquired 203,212 shares at no cost through the vesting and settlement of performance share units tied to the company’s return on invested capital.

On the same date, 89,392 shares were disposed of through share withholding to cover tax obligations, based on a $22.12 closing price. After these transactions, he directly owned 1,462,910 shares, including 457,904 shares underlying previously granted restricted stock units that are still subject to vesting.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Kennedy Michael N.

Role See Remarks

Type	Security	Shares	Price	Value
Grant/Award	Common stock, par value $0.01 per share	203,212	$0.00	--
Tax Withholding	Common stock, par value $0.01 per share	89,392	$22.12	$1.98M

Holdings After Transaction: Common stock, par value $0.01 per share — 1,552,302 shares (Direct)

Footnotes (1)

Each performance share unit ("PSU") represented a contingent right to receive one share of common stock ("Common Stock") of Antero Midstream Corporation (the "Issuer"). On February 24, 2026, the Compensation Committee of the Issuer certified performance and authorized settlement with respect to PSUs originally granted on April 15, 2023, which vested based on the Issuer's return on invested capital over a three year period. Includes 457,904 shares of Common Stock subject to previously granted restricted stock unit awards that remain subject to vesting. In connection with the vesting and settlement of PSUs through the issuance of Common Stock pursuant to the Amended and Restated Antero Midstream Corporation Long Term Incentive 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 February 24, 2026.

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Form 4 Insider Transactions: What Each Field Means →

02/26/2026 - 09:36 PM

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Kennedy Michael N.

(Last)

(First)

(Middle)

1615 WYNKOOP STREET

(Street)

DENVER

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)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common stock, par value $0.01 per share	02/24/2026		A		203,212⁽¹⁾	A	$0	1,552,302⁽²⁾	D
Common stock, par value $0.01 per share	02/24/2026		F		89,392⁽³⁾	D	$22.12	1,462,910⁽²⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Each performance share unit ("PSU") represented a contingent right to receive one share of common stock ("Common Stock") of Antero Midstream Corporation (the "Issuer"). On February 24, 2026, the Compensation Committee of the Issuer certified performance and authorized settlement with respect to PSUs originally granted on April 15, 2023, which vested based on the Issuer's return on invested capital over a three year period.

2. Includes 457,904 shares of Common Stock subject to previously granted restricted stock unit awards that remain subject to vesting.

3. In connection with the vesting and settlement of PSUs through the issuance of Common Stock pursuant to the Amended and Restated Antero Midstream Corporation Long Term Incentive 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 February 24, 2026.

Remarks:

Chief Executive Officer and President

	/s/ Yvette K. Schultz, as attorney-in-fact for Michael N. Kennedy	02/26/2026
	** Signature of Reporting Person	Date
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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did Michael N. Kennedy report at Antero Midstream (AM)?

Michael N. Kennedy reported equity compensation activity involving Antero Midstream common stock. He received 203,212 shares through vested performance share units and had 89,392 shares withheld and disposed of to cover tax obligations tied to that vesting event.

How many Antero Midstream (AM) shares did Kennedy acquire in this Form 4?

Kennedy acquired 203,212 shares of Antero Midstream common stock at no cost. These shares resulted from the vesting and settlement of performance share units that were originally granted in April 2023 and tied to return on invested capital performance.

Why were 89,392 Antero Midstream (AM) shares disposed of in this filing?

The 89,392 shares were withheld and disposed of to satisfy tax withholding obligations. The issuer retained these shares upon vesting of performance share units, determining the withheld amount using the $22.12 closing stock price on February 24, 2026.

How many Antero Midstream (AM) shares does Kennedy own after these transactions?

After the reported transactions, Kennedy directly owned 1,462,910 Antero Midstream common shares. This total includes 457,904 shares underlying previously granted restricted stock unit awards that remain subject to vesting conditions under the company’s long-term incentive plan.

What do the restricted stock units in the Antero Midstream (AM) filing represent?

The filing notes 457,904 Antero Midstream shares tied to restricted stock unit awards. These units represent rights to receive common shares in the future, subject to continued vesting conditions under the company’s Amended and Restated Long Term Incentive Plan.