Zmigrosky Matt plan to sell securities of Diamondback Energy, Inc. under Form 144

Zmigrosky Matt filed Form 144 to notify SEC of plan to sell 15000 units of Diamondback Energy, Inc. securities around 2026-05-13, with aggregate market value of $3,001,502.00. The total outstanding units is 281313297.0. The amount planned to be sold represents 0.01% of total outstanding units; Recent transactions in past 3 months include: On 03/13/2026, sold 20899 units for $3761877.00; On 03/18/2026, sold 4101 units for $781293.00;