Exhibit 99.1 STEALTHGAS INC. REPORTS FIRST QUARTER 2025 FINANCIAL AND OPERATING RESULTS ATHENS, GREECE, May 28, 2025. STEALTHGAS INC. (NASDAQ: GASS), a ship-owning company serving the liquefied petroleum gas (LPG) sector of the international shipping industry, announced today its unaudited financial and operating results for the first quarter ended March 31, 2025. OPERATIONAL AND FINANCIAL HIGHLIGHTS First Quarter 2025 Results 1: • Revenues for the three months ended March 31, 2025 amounted to $42.0 million ...