[Form 4] Diamondback Energy, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Diamondback Energy, Inc. (FANG) – Form 4 insider transaction summary:

Director Charles A. Meloy, acting through Wolfrock Energy, LLC, executed three open-market sales of Diamondback Energy common stock on 17–18 June 2025 under a pre-established Rule 10b5-1 trading plan adopted 3 December 2024.

• 6,039 shares sold on 17 Jun 2025 at a weighted-average price of $155.2905
• 27 shares sold on 17 Jun 2025 at $156.02
• 87 shares sold on 18 Jun 2025 at $155.0275

Total shares disposed: 6,153, representing a cash value of roughly $0.95 million at the reported averages.

Following these transactions, Wolfrock Energy, LLC holds 1,078,864 FANG shares indirectly for Mr. Meloy, while he also owns 2,275 shares directly. The filing includes standard footnotes confirming the weighted-average pricing methodology and the multilayer ownership structure of Wolfrock Energy > CS Ventures, Ltd. > CSV Management Trust.

No derivative security activity was reported. The sales reduce Mr. Meloy’s indirect position by approximately 0.57 % (6,153 ÷ 1,085,017 total prior indirect shares), a modest change relative to his overall holdings. Because the trades were executed under a 10b5-1 plan, they were pre-scheduled and do not necessarily signal a change in insider sentiment.

Positive

• None.

Negative

• Director disposed of 6,153 shares (≈$0.95 m) of FANG stock, which can be interpreted as a minor bearish signal despite being under a 10b5-1 plan.

Insights

Financial Analyst

TL;DR – Small, pre-planned insider sale; negligible impact on FANG valuation.

The director sold 6,153 shares (~$0.95 m) under a 10b5-1 plan, trimming his indirect stake by just 0.57 %. Post-sale ownership remains sizable at 1.08 m shares, aligning incentives. Given the modest volume relative to FANG’s ~180 m shares outstanding and the pre-scheduled nature, market impact should be minimal. Investors typically view routine 10b5-1 sales as neutral unless volumes spike or multiple insiders sell concurrently; neither condition applies here.

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).

X

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^*

Meloy Charles Alvin

(Last) (First) (Middle)

500 WEST TEXAS AVENUE

SUITE 100

(Street)

MIDLAND TX 79701

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
06/17/2025

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/17/2025		S		6,039(1)	D	$155.2905(2)	1,078,978	I(3)	Wolfrock Energy, LLC(3)
Common Stock	06/17/2025		S		27(1)	D	$156.02	1,078,951	I(3)	Wolfrock Energy, LLC(3)
Common Stock	06/18/2025		S		87(1)	D	$155.0275	1,078,864	I(3)	Wolfrock Energy, LLC(3)
Common Stock								2,275	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Meloy on December 3, 2024.

2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $155.00 per share to $155.99 per share, inclusive. The reporting person undertakes to provide to Diamondback Energy, Inc., any security holder of Diamondback Energy, Inc., 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.

3. These securities are held directly by Wolfrock Energy, LLC, a Texas limited liability company whose sole member is CS Ventures, Ltd., of which Mr. Meloy and his spouse are the limited partners. CS Ventures, Ltd. is controlled by its general partner, CSV Management Trust, of which Mr. Meloy is the trustee.

Remarks:

	/s/ Teresa L. Dick, as attorney-in-fact for Charles A. Meloy	06/20/2025
	** 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.

FAQ

How many Diamondback Energy (FANG) shares did Charles A. Meloy sell in June 2025?

He sold 6,153 shares across three transactions on 17-18 June 2025.

What were the sale prices of the FANG shares?

Weighted-average prices reported were $155.2905, $156.02, and $155.0275 per share.

Does Meloy still own Diamondback Energy shares after the sale?

Yes. He holds 1,078,864 shares indirectly through Wolfrock Energy, LLC and 2,275 shares directly.

Was the insider sale executed under a Rule 10b5-1 plan?

Yes. The filing states the trades were made under a 10b5-1 plan adopted on 3 Dec 2024.

Were any derivative securities involved in this Form 4 filing?

No derivative security acquisitions or dispositions were reported.