Overview

Clean Harbors (NYSE: CLH) is North America’s leading provider of environmental and industrial services. The Company serves a diverse customer base, including a majority of Fortune 500 companies. Its customer base spans a number of industries, including chemical and manufacturing, as well as numerous government agencies. These customers rely on Clean Harbors to deliver a broad range of services such as end-to-end hazardous waste management, emergency spill response, industrial cleaning and maintenance, and recycling services.

October 5, 2026

Summary Toggle Clean Harbors Completes Acquisitions of EnviroServe and ES&H

Transactions Expand Clean Harbors’ Technical Services and Field Services Businesses EnviroServe’s Network of Waste Handling Locations Boosts Company’s Collection Capabilities ES&H Adds Established Emergency Response Leader in the U.S. Gulf Region Total Spend of $775 Million with a Combined
September 17, 2026

Summary Toggle Clean Harbors Prices Offering of Senior Notes Due 2034

NORWELL, Mass. --(BUSINESS WIRE)--Sep. 17, 2026-- Clean Harbors, Inc. (“Clean Harbors” or the “Company”) (NYSE: CLH), announced today that it has priced a private offering of $600 million of senior notes due 2034 (the “notes”). The notes, which carry an interest rate of 6.250%, were priced for
September 17, 2026

Summary Toggle Clean Harbors Announces $600 Million Senior Notes Offering

NORWELL, Mass. --(BUSINESS WIRE)--Sep. 17, 2026-- Clean Harbors, Inc. (“Clean Harbors” or the “Company”) (NYSE: CLH), announced today that it is commencing a private offering of $600 million of senior notes (the “notes”). Clean Harbors expects the notes to mature in 2034.

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