Clean Harbors Inc
NYSE:CLH
Clean Harbors Inc
Clean Harbors Inc. stands as a compelling narrative within the industrial services sector, embodying resilience and adaptability in the face of an ever-evolving environmental landscape. Founded in 1980 by Alan S. McKim, the company has grown from a small, four-person tank cleaning business into North America's leading provider of environmental, energy, and industrial services. Operating through two primary segments—Environmental Services and Safety-Kleen—the company offers a diversified portfolio of services, including hazardous waste management, emergency spill response, industrial cleaning, and hazardous waste disposal, which form the core of its operations. The Environmental Services segment primarily focuses on the collection, transportation, treatment, and disposal of hazardous and non-hazardous wastes, leveraging an expansive network of incineration and landfill facilities to process a broad spectrum of waste streams.
Safety-Kleen, meanwhile, is integral to Clean Harbors' success, functioning as a sustainability powerhouse that emphasizes the recycling and beneficial reuse of waste oil and other materials. By collecting used oil from various industries, refining it, and selling it as base and blended recycled lubricants, the segment embodies a circular economy model, turning what was once a costly disposal challenge into a profitable enterprise. This focus on sustainable practices not only underscores Clean Harbors' commitment to environmental stewardship but also provides a competitive edge in regulatory-driven markets. Through strategic acquisitions and a steadfast commitment to operational excellence, Clean Harbors has successfully embedded itself as a trusted partner for industries requiring stringent compliance with environmental regulations, thus ensuring a steady revenue stream while contributing to a cleaner, safer world.
Clean Harbors Inc. stands as a compelling narrative within the industrial services sector, embodying resilience and adaptability in the face of an ever-evolving environmental landscape. Founded in 1980 by Alan S. McKim, the company has grown from a small, four-person tank cleaning business into North America's leading provider of environmental, energy, and industrial services. Operating through two primary segments—Environmental Services and Safety-Kleen—the company offers a diversified portfolio of services, including hazardous waste management, emergency spill response, industrial cleaning, and hazardous waste disposal, which form the core of its operations. The Environmental Services segment primarily focuses on the collection, transportation, treatment, and disposal of hazardous and non-hazardous wastes, leveraging an expansive network of incineration and landfill facilities to process a broad spectrum of waste streams.
Safety-Kleen, meanwhile, is integral to Clean Harbors' success, functioning as a sustainability powerhouse that emphasizes the recycling and beneficial reuse of waste oil and other materials. By collecting used oil from various industries, refining it, and selling it as base and blended recycled lubricants, the segment embodies a circular economy model, turning what was once a costly disposal challenge into a profitable enterprise. This focus on sustainable practices not only underscores Clean Harbors' commitment to environmental stewardship but also provides a competitive edge in regulatory-driven markets. Through strategic acquisitions and a steadfast commitment to operational excellence, Clean Harbors has successfully embedded itself as a trusted partner for industries requiring stringent compliance with environmental regulations, thus ensuring a steady revenue stream while contributing to a cleaner, safer world.
Record Results: Clean Harbors delivered record annual revenue, adjusted EBITDA, and free cash flow in 2025, capping the year with strong Q4 performance exceeding guidance.
Profitability & Margins: Adjusted EBITDA margin expanded by 40 basis points for the year and by 60 basis points in Q4, driven by pricing, higher volumes, and efficiency initiatives.
Guidance Raised: 2026 adjusted EBITDA guidance was set at $1.20–$1.26 billion (midpoint $1.23 billion), reflecting ~5% growth over 2025.
Strong Cash Flow: Free cash flow hit a record $509 million in 2025 (44% of EBITDA), and 2026 guidance is $480–$540 million.
Strategic Investments: Announced $130 million DCI acquisition and a $50 million vacuum truck fleet expansion, with significant expected EBITDA contributions.
PFAS Growth: PFAS-related business grew significantly, with a 3-year, $110 million contract signed, and management guiding to 20% further PFAS growth in 2026.
Shareholder Returns: Record $250 million of share buybacks in 2025, with authorization expanded by $350 million for future repurchases.
