Diamondback Energy (FANG)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-12 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: 2026-03-12 | Code: S (Open market sale) Shares: -12,650,000 | Price: $170.19 Total Value: $2,152,888,320.00 Shares Owned After: 84,036,722 | Ownership: D (Direct) Footnotes: [F1] On March 12, 2026, SGF FANG Holdings, LP, a Delaware limited partnership, sold 12,650,000 shares of common stock of Diamondback Energy, Inc. (the "Company"), par value $0.01 per share (the "Common Stock"), in an underwritten public offering pursuant to the Company's Registration Statement on Form S-3 (File No. 333-282225). [F2] The actual sale price was $170.18875. The price reported in Table I, Column 4 has been rounded to $170.1888 because the EDGAR filing system does not accommodate a fifth decimal place. [F3] Reduced by 5 shares to correct an administrative error in previous reporting of common stock held. --- Footnotes (Complete Index) --- F1: On March 12, 2026, SGF FANG Holdings, LP, a Delaware limited partnership, sold 12,650,000 shares of common stock of Diamondback Energy, Inc. (the "Company"), par value $0.01 per share (the "Common Stock"), in an underwritten public offering pursuant to the Company's Registration Statement on Form S-3 (File No. 333-282225). F2: The actual sale price was $170.18875. The price reported in Table I, Column 4 has been rounded to $170.1888 because the EDGAR filing system does not accommodate a fifth decimal place. F3: Reduced by 5 shares to correct an administrative error in previous reporting of common stock held. --- Signature --- /s/ /s/ Kevin T. Keen, Attorney in fact (2026-03-16)