Diamondback Energy BDR program executes 8-for-1 stock split in Brazil on Aug. 10

Diamondback Energy will implement a mandatory BDR stock split, issuing 7 additional BDRs for each 1 BDR held.

• The BDR-to-underlying ratio will shift to 1:16 from 1:2, effective at the market open on 10/08/2026.
• Eligible date set for 07/08/2026; new BDRs scheduled to be credited on 12/08/2026.
• Fractional entitlements will be settled in cash, subject to income tax deductions.