X0508 4 2026-03-12 0001539838 Diamondback Energy, Inc. FANG 0002080063 SGF FANG Holdings, LP C/O SGF CAPITAL LLC, KEVIN T. KEEN 8111 DOUGLAS AVE., SUITE 1200 DALLAS TX 75225 true 0002021141 Greth Lyndal C/O SGF CAPITAL LLC, KEVIN T. KEEN 8111 DOUGLAS AVENUE, SUITE 1200 DALLAS TX 75225 true false Common Stock 2026-03-12 4 S 0 12650000 170.1888 D 84036722 D 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). 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. Reduced by 5 shares to correct an administrative error in previous reporting of common stock held. /s/ Kevin T. Keen, Attorney in fact 2026-03-16