Midland, TX (May 4, 2026) - Diamondback Energy, Inc. (NASDAQ: FANG) ("Diamondback," "we," "our" or the "Company") today announced financial and operating results for the first quarter ended March 31, 2026. FIRST QUARTER 2026 HIGHLIGHTS UPDATED 2026 GUIDANCE HIGHLIGHTS Exhibit 99.1 DIAMONDBACK ENERGY, INC. ANNOUNCES FIRST QUARTER 2026 FINANCIAL AND OPERATING RESULTS; INCREASES BASE DIVIDEND AND PRODUCTION GUIDANCE NON-GAAP DISCLOSURES - For a definition of Operating Cash Flow Before Working Capital Changes, ...