Diamondback Energy stockholders approve charter amendments at 2023 annual meeting

consistent with the Charter Amendments reflected in the Second Amended and Restated Charter, the Fourth A&R Bylaws: (i) remove the 66 2/3% supermajority vote standards from the bylaws to align them with the Second Amended and Restated Charter; and (ii) provide the Company’s stockholders holding, for their own account, the Requisite Percent of the Company’s voting stock and acting on their own behalf (and not on behalf of any other person or entity) the right to request a special meeting

to: (i) remove the 66 2/3% supermajority vote requirements for the stockholders to approve certain amendments to the Company Charter and to remove directors from office; (ii) provide that stockholders holding at least 25% of the voting power, determined on a net long basis (the “Requisite Percent”), for at least one year, may call special meetings of stockholders; and (iii) approve charter amendments to reflect new Delaware law provisions regarding officer exculpation (each, a “Charter Amendment,” and, collectively, the “Charter Amendments”).

The Company’s stockholders approved, on an advisory basis, the compensation paid to the Company’s named executive officers. The results of the stockholder vote on Proposal 2 were as follows: For Against Abstain Non-Votes 145,449,130 5,341,364 145,429 12,793,957

The amendments to the Company Charter to remove the 66 2/3% supermajority vote requirements for the stockholders to approve certain amendments to the Company Charter and to remove directors from office were approved. The results of the stockholder vote on Proposal 3 were as follows: For Against Abstain Non-Votes 148,286,607 2,514,446 134,870 12,793,957

Travis D. Stice, Vincent K. Brooks, David L. Houston, Rebecca A. Klein, Stephanie K. Mains, Mark L. Plaumann, Melanie M. Trent, Frank D. Tsuru and Steven E. West, were elected to continue to serve as the Company’s directors until the 2024 Annual Meeting of Stockholders or until their respective successors are duly elected and qualified. The results of the stockholder vote on Proposal 1 were as follows: Name of Nominee For Against Abstain Non-Votes Travis D. Stice 146,294,233 4,548,915 92,775 12,793,957 Vincent K. Brooks 148,017,867 2,797,242 120,814 12,793,957 David L. Houston 147,257,323 3,596,063 82,537 12,793,957 Rebecca A. Klein 150,551,982 317,560 66,381 12,793,957 Stephanie K. Mains 147,674,329 3,042,639 218,955 12,793,957 Mark L. Plaumann 146,218,132 4,630,140 87,651 12,793,957 Melanie M. Trent 143,867,459 7,000,962 67,502 12,793,957 Frank D. Tsuru 150,546,811 307,746 81,366 12,793,957 Steven E. West 149,342,915 1,509,378 83,630 12,793,957