Diamondback Energy(FANG) - 2025 Q4 - Annual Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Zip Code) (Address of principal executive offices) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 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 (I.R.S. Employer Identificatio ...