Clean Harbors, Inc.

Clean Harbors, Inc. is North America's leading provider of environmental and industrial services, headquartered in Norwell, Massachusetts. Founded in 1980, the company's mission is to be recognized as the premier provider in its field, protecting people and the environment by offering safe solutions for hazardous waste and environmental challenges. It operates across the United States, Canada, Mexico, Puerto Rico, and India, serving a diverse customer base that includes a majority of Fortune 500 companies and various government agencies.

The company's services are primarily delivered through two reporting segments: Environmental Services and Safety-Kleen Sustainability Solutions. The Environmental Services segment provides comprehensive hazardous and non-hazardous material management, including collection, transportation, treatment, recycling, and disposal, alongside emergency spill response, industrial cleaning, and field services. Through its Safety-Kleen subsidiary, Clean Harbors is North America's largest re-refiner and recycler of used oil, also offering parts washers and environmental services to commercial, industrial, and automotive customers.

Recent developments include the announcement of strong first-quarter 2026 financial results, with increased profitability and raised guidance for Adjusted EBITDA and free cash flow. In April 2026, Clean Harbors formally released its PFAS disposal and treatment guidance standards to assist customers and communities. The company also expanded its operations in May 2026 with the acquisition of Terra Nova Solutions, enhancing its regional hazardous and non-hazardous waste services. Leadership includes Co-Chief Executive Officers Michael L. Battles and Eric W. Gerstenberg, and CFO Eric J. Dugas, with founder Alan McKim serving as Chairperson and Chief Technology Officer, though he announced his intention to retire from the Board and his CTO role in May 2026.