Was the Antero Midstream (AM) director’s share sale under a Rule 10b5-1 plan?

The filing’s Rule 10b5-1 checkbox was not marked as affirming a trading plan, indicating these transactions were not reported as executed under a Rule 10b5-1 plan . No footnote describes them as pre-arranged trades.

Antero Midstream Corp (NYSE: AM) director sells 5,000 shares at $21.27 average

Q: At what price did the Antero Midstream (AM) director sell his 5,000 shares?

The 5,000 Antero Midstream (AM) shares were sold at a weighted average price of $21.27 per share, across multiple trades executed in a price range of $21.21 to $21.30 per share, according to the Form 4 footnote.

Q: How many Antero Midstream (AM) shares does Brooks J Klimley hold after the sale?

Following the reported sale, Brooks J Klimley directly holds 68,204 Antero Midstream (AM) shares . This post-transaction ownership figure reflects his remaining common stock position after disposing of 5,000 shares on 2026-08-06.

Q: What type of transaction was reported in Antero Midstream (AM)’s latest Form 4?

The Form 4 reports a sale of common stock by director Brooks J Klimley. It is categorized as a sale in open market or private transaction , involving 5,000 shares of Antero Midstream (AM) common stock at a weighted average price of $21.27.

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Antero Midstream Corp director Brooks J Klimley reported selling 5,000 shares of common stock on 2026-08-06 at a weighted average price of $21.27 per share, in multiple open-market transactions priced between $21.21 and $21.30. After this sale, he directly holds 68,204 shares.

Insider Trade Summary

Net Seller: 5,000 shares

Net Sell 1 txn

Insider KLIMLEY BROOKS J

Role Director

Sold 5,000 shs ($106K)

Type	Security	Shares	Price	Value
Sale	Common stock, par value $0.01 per share ^F1	5,000	$21.27	$106K

Holdings After Transaction: Common stock, par value $0.01 per share — 68,204 shares (Direct)

Footnotes (1)

F1. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.21 to $21.30, inclusive. The reporting person undertakes to provide to Antero Midstream Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1).

Key Figures

Shares sold: 5,000 shares Weighted average sale price: $21.27 per share Post-transaction holdings: 68,204 shares +2 more

5 metrics

Shares sold 5,000 shares Common stock sale by director on 2026-08-06

Weighted average sale price $21.27 per share Average price for 5,000 shares sold on 2026-08-06

Post-transaction holdings 68,204 shares Common stock directly owned after the reported sale

Sale price range low $21.21 per share Lowest price among multiple sale trades referenced in footnote

Sale price range high $21.30 per share Highest price among multiple sale trades referenced in footnote

Key Terms

weighted average price, open market or private transaction, par value $0.01 per share

3 terms

weighted average price financial

"The price reported in column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open market or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/06/2026 - 06:41 PM Accepted by SEC EDGAR 08/06/2026 - 06:41 PM

FAQ

What insider transaction did Antero Midstream (AM) disclose for Brooks J Klimley?

Antero Midstream (AM) disclosed that director Brooks J Klimley sold 5,000 shares of common stock on 2026-08-06 at a weighted average price of $21.27 per share, in multiple transactions between $21.21 and $21.30.

At what price did the Antero Midstream (AM) director sell his 5,000 shares?

The 5,000 Antero Midstream (AM) shares were sold at a weighted average price of $21.27 per share, across multiple trades executed in a price range of $21.21 to $21.30 per share, according to the Form 4 footnote.

How many Antero Midstream (AM) shares does Brooks J Klimley hold after the sale?

Following the reported sale, Brooks J Klimley directly holds 68,204 Antero Midstream (AM) shares. This post-transaction ownership figure reflects his remaining common stock position after disposing of 5,000 shares on 2026-08-06.

What type of transaction was reported in Antero Midstream (AM)’s latest Form 4?

The Form 4 reports a sale of common stock by director Brooks J Klimley. It is categorized as a sale in open market or private transaction, involving 5,000 shares of Antero Midstream (AM) common stock at a weighted average price of $21.27.

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^*

KLIMLEY BROOKS J

(Last)

(First)

(Middle)

9 SHERMAN AVENUE

(Street)

BRONXVILLE

NEW YORK

10708

(City)

(State)

(Zip)

UNITED STATES

(Country)

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
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/06/2026

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

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

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

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	08/06/2026		S		5,000	D	$21.27⁽¹⁾	68,204	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. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.21 to $21.30, inclusive. The reporting person undertakes to provide to Antero Midstream Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1).

	/s/ Yvette K. Schultz, as attorney-in-fact for Brooks J. Klimley	08/06/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR