EXHIBIT 99.1 Hallador Energy Company Reports Second Quarter 2025 Financial and Operating Results - Q2 Total Revenue up 10% YoY to $102.9 Million - - Q2 Net Income Increases to$8.2 Million or $0.19 Earnings per Share – - Q2 Operating Cash Flow of$11.4 Million - - Q2 Adjusted EBITDA increases to $3.4 Million - TERRE HAUTE, Ind., August 11, 2025 – Hallador Energy Company (Nasdaq: HNRG) ("Hallador" or the "Company") today reported its financial results for the second quarter ended June 30, 2025. "We delivered ...