Albert Barkmann - 10 Sep 2025 Form 4 Insider Report for Diamondback Energy, Inc. (FANG)

Role: Exec. VP and Chief Engineer
Signature: /s/ Teresa L. Dick, as attorney-in-fact for Albert Barkmann
Issuer symbol: FANG
Transactions as of: 10 Sep 2025
Transactions value $: -$92,950
Form type: 4
Filing time: 11 Sep 2025, 16:05:21 UTC
Previous filing: 19 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Barkmann Albert	Exec. VP and Chief Engineer	500 WEST TEXAS AVENUE, SUITE 100, MIDLAND	/s/ Teresa L. Dick, as attorney-in-fact for Albert Barkmann	11 Sep 2025	0002012976

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FANG	Common Stock	Tax liability	-$92.9K	-682	-2.64%	$136.29	25.2K	10 Sep 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on September 10, 2025 of the first tranche of the time-based restricted stock units granted to the reporting person on September 10, 2024. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on September 9, 2025.

Content

The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on September 10, 2025 of the first tranche of the time-based restricted stock units granted to the reporting person on September 10, 2024. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on September 9, 2025.