144 0001333454 XXXXXXXX LIVE 0001539838 Diamondback Energy, Inc. 001-35700 500 West Texas Ave. Suite 100 Midland TX 79701 1-432-221-7400 Charles A. Meloy Director Common Stock Goldman Sachs & Co. LLC 200 West Street New York NY 10282 116667 21947396.04 281313297 06/16/2026 NASD Common Stock 09/10/2024 Acquired as consideration of merger or acquisition Issuer N 116667 09/10/2024 Securities N Wolfrock Energy, L.L.C. 500 West Texas Ave. Suite 100 Midland TX 79701 Common Stock 05/08/2026 7857 1485577.99 Wolfrock Energy, L.L.C. 500 West Texas Ave. Suite 100 Midland TX 79701 Common Stock 05/07/2026 7857 1486520.04 Wolfrock Energy, L.L.C. 500 West Texas Ave. Suite 100 Midland TX 79701 Common Stock 04/07/2026 7857 1547939 Wolfrock Energy, L.L.C. 500 West Texas Ave. Suite 100 Midland TX 79701 Common Stock 04/06/2026 7857 1523729.22 The sales of shares set forth herein are made in connection with a selling plan dated 3/17/2026 that is intended to comply with Rule 10b5-1(c). All shares to be sold by Wolfrock Energy, L.L.C. 06/16/2026 03/17/2026 Goldman Sachs & Co. LLC on behalf of Charles A. Meloy