SGF FANG Holdings, LP - 28 Nov 2025 Form 4 Insider Report for Diamondback Energy, Inc. (FANG)

Role: 10%+ Owner
Signature: /s/ Kevin T. Keen, Attorney in fact
Issuer symbol: FANG
Transactions as of: 28 Nov 2025
Net transactions value: -$305,180,000
Form type: 4
Filing time: 02 Dec 2025, 17:02:26 UTC
Previous filing: 15 Aug 2025
Next filing: 05 Feb 2026
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
SGF FANG Holdings, LP	10%+ Owner	C/O SGF CAPITAL LLC, KEVIN T. KEEN, 8111 DOUGLAS AVE., SUITE 1200, DALLAS	/s/ Kevin T. Keen, Attorney in fact	02 Dec 2025	0002080063
Greth Lyndal	10%+ Owner	C/O SGF CAPITAL LLC, KEVIN T. KEEN, 8111 DOUGLAS AVENUE, SUITE 1200, DALLAS	/s/ Kevin T. Keen, Attorney in fact	02 Dec 2025	0002021141

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FANG	Common Stock	Sale	$305,180,000	-2,000,000	-2%	$152.59	99,686,727	28 Nov 2025	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Pursuant to a letter agreement, dated November 28, 2025, by and between Diamondback Energy, Inc., a Delaware corporation (the "Company"), and SGF FANG Holdings, LP, a Delaware limited partnership ("SGF FANG"), SGF FANG sold 2,000,000 shares of common stock to the Company at the November 28, 2025 closing price of the common stock on Nasdaq. Mrs. Greth is the ultimate beneficial owner of the shares held of record by SGF FANG and indirectly controls SGF Capital, LLC, its general partner.

Content

Pursuant to a letter agreement, dated November 28, 2025, by and between Diamondback Energy, Inc., a Delaware corporation (the "Company"), and SGF FANG Holdings, LP, a Delaware limited partnership ("SGF FANG"), SGF FANG sold 2,000,000 shares of common stock to the Company at the November 28, 2025 closing price of the common stock on Nasdaq. Mrs. Greth is the ultimate beneficial owner of the shares held of record by SGF FANG and indirectly controls SGF Capital, LLC, its general partner.