Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Meloy Charles Alvin 2. Issuer Name and Ticker or Trading Symbol Diamondback Energy, Inc. [FANG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 500 WEST TEXAS AVENUE, SUITE 100 3. Date of Earliest Transaction (Month/Day/Year) 09/15/2026 (Street) MIDLAND, TX 79701 4. If Amendment, Date 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 (City) (State) (Zip) 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 09/15/2026 G 25,000(1) D $ 0 793,197 I(2) Wolfrock Energy, LLC(2) Common Stock 09/15/2026 G V 12,500(1) A $ 0 12,500 I(3) Katy Evans Meloy 2011 Trust(3) Common Stock 09/15/2026 G V 12,500(1) A $ 0 12,500 I(3) Grady Allen Meloy 2011 Trust(3) Common Stock 09/16/2026 G 12,500(4) D $ 0 0 I(3) Katy Evans Meloy 2011 Trust(3) Common Stock 09/16/2026 G 12,500(4) D $ 0 0 I(3) Grady Allen Meloy 2011 Trust(3) Common Stock 09/16/2026 G V 25,000(4) A $ 0 28,257 D

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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 Underlying Securities (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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Meloy Charles Alvin 500 WEST TEXAS AVENUE SUITE 100 MIDLAND, TX 79701	X

Signatures

/s/ Matt Zmigrosky, as attorney-in-fact for Charles A. Meloy		09/17/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On September 15, 2026, Wolfrock Energy, LLC, a Texas limited liability company whose sole member is CS Ventures, Ltd. CS Ventures, Ltd. is controlled by its general partner, Meloy Management, LLC, which is controlled by the Reporting Person, gifted 12,500 shares to the Katy Evans Meloy 2011 Trust and 12,500 shares to the Grady Allen Meloy 2011 Trust.
(2)	These securities are held directly by Wolfrock Energy, LLC, a Texas limited liability company whose sole member is CS Ventures, Ltd. CS Ventures, Ltd. is controlled by its general partner, Meloy Management, LLC, which is controlled by the Reporting Person.
(3)	Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.
(4)	On September 16, 2026, all of the issuer's securities held by the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust were gifted to a community property account held by Mr. Meloy and his spouse.

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