NEW YORK, June 13, 2025 (GLOBE NEWSWIRE) -- The law firm of Kirby McInerney LLP reminds investors that the firm is investigating potential claims against Hallador Energy Company (“Hallador” or the “Company”) (NASDAQ:HNRG). The firm’s ongoing investigation concerns whether Hallador and/or certain of its officers have violated the federal securities laws and/or engaged in other unlawful business practices. [Click here to learn more about the investigation] On May 23, 2025, Hallador disclosed that its agreeme ...