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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1539838	Diamondback Energy Inc.	FANG	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1333454	Alvin Charles Meloy	500 West Texas Avenue Suite 100 Midland TX 79701		Yes	No	No	No

Transaction Summary

Sold:	6,153 shares	Avg. Price: $155.29	Total Value: $955,499.26
Number of Shares After Transactions:	1,078,864 shares

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2025-06-17	6,039	$155.29	1,078,978	No	4	S	Indirect	Wolfrock Energy, LLC
Common Stock	Disposition	2025-06-17	27	$156.02	1,078,951	No	4	S	Indirect	Wolfrock Energy, LLC
Common Stock	Disposition	2025-06-18	87	$155.03	1,078,864	No	4	S	Indirect	Wolfrock Energy, LLC

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	Wolfrock Energy, LLC
No	4	S	Indirect	Wolfrock Energy, LLC
No	4	S	Indirect	Wolfrock Energy, LLC

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	2,275	Direct

Footnotes

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.
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.
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.