SAN FRANCISCO, Feb. 6, 2024 /PRNewswire/ -- Gryphon Investors ("Gryphon"), a leading middle-market private equity firm, announced today that it has signed an agreement to sell HEPACO, LLC ("HEPACO" or "the Company") to Clean Harbors Inc. ("Clean Harbors") (NYSE: CLH), a leading provider of environmental and industrial services, in a transaction valued at $400 million. The transaction is subject to customary closing conditions. Gryphon initially invested in the Company in August 2016 and completed seven add- ...