UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-35700 Diamondback Energy, Inc. (Exact Name of Registrant As Specified in Its Charter) DE 45-4502447 (State or Other Jurisdiction of Incorporation or Organization) (I.R.S. Em ...