Diamondback Energy, Inc. (FANG) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-04 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Diamondback Energy, Inc. (FANG) CIK: 0001539838 --- Reporting Owner --- Name: SGF FANG Holdings, LP CIK: 0002080063 Role: 10%+ Owner --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-04 | Code: S (Open market sale) Shares: -10,000,000 | Price: $204.25 Total Value: $2,042,500,000.00 Shares Owned After: 74,036,722 | Ownership: D (Direct) Footnotes: [F1] On June 4, 2026, SGF FANG Holdings, LP, a Delaware limited partnership, sold 10,000,000 shares of common stock of Diamondback Energy, Inc., par value $0.01 per share, pursuant to Rule 144 under the Securities Act of 1933, as amended. --- Footnotes (Complete Index) --- F1: On June 4, 2026, SGF FANG Holdings, LP, a Delaware limited partnership, sold 10,000,000 shares of common stock of Diamondback Energy, Inc., par value $0.01 per share, pursuant to Rule 144 under the Securities Act of 1933, as amended. --- Signature --- /s/ /s/ Kevin T. Keen, Attorney in fact (2026-06-05)