Exhibit 99.1 DIAMONDBACK ENERGY, INC. ANNOUNCES THIRD QUARTER 2025 FINANCIAL AND OPERATING RESULTS Midland, TX (November 3, 2025) - Diamondback Energy, Inc. (NASDAQ: FANG) ("Diamondback," "we," "our" or the "Company") today announced financial and operating results for the third quarter ended September 30, 2025. • On October 1st, closed the previously announced divestiture of Environmental Disposal Systems, LLC to Deep Blue Midland Basin LLC ("Deep Blue"); Diamondback retained its 30% equity ownership in De ...