Diamondback Energy, Inc. → Viper Energy, Inc. VNOM

Item 4 of the Schedule 13D is hereby amended and supplemented as follows: Purchase Agreement On August 3, 2026, the Issuer, as parent, and Viper Energy Partners LP, as buyer, entered into a definitive purchase agreement to acquire certain mineral and royalty interests from the Reporting Persons and related subsidiaries in exchange for 3,654,979 OpCo units and an equivalent number of shares of the Issuer's Class B Common Stock, subject to transaction costs and certain customary post-closing adjustments (the "Purchase Agreement"). The Purchase Agreement is expected to close in September. The foregoing description of the Purchase Agreement does not purport to be complete and is qualified in its entirety by the full text of such agreement, which is attached as an exhibit to this Schedule 13D and incorporated herein by reference.