Exhibit 99.1 VAALCO ENERGY, INC. ANNOUNCES FIRST QUARTER 2025 RESULTS HOUSTON – May 8, 2025 - VAALCO Energy, Inc. (NYSE: EGY, LSE: EGY) ("Vaalco" or the "Company") today reported operational and financial results for the first quarter of 2025. First Quarter 2025 Highlights and Recent Key Items: George Maxwell, Vaalco's Chief Executive Officer commented, "We delivered another successful quarter, once again meeting or exceeding our guidance. Sales for the first quarter were toward the high end of guidance and ...