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Eric W. Gerstenberg, co-CEO of Clean Harbors, sold 1,000 shares of the waste management company on 18 March, according to an SEC filing. The transaction was executed at $293.00 per share. The sale reduced Gerstenberg's direct holdings by 2%, leaving him with 59,857 shares. Clean Harbors reported trailing-twelve-month revenue of $6.2 billion and net income of $439.1 million. The North American environmental services company operates through two primary divisions: Environmental Services and Safety-Kleen Sustainability Solutions. Clean Harbors manages hazardous and non-hazardous waste, providing collection, transportation, treatment, and disposal services to manufacturing facilities, refineries, chemical plants, and municipalities. The company has a market capitalisation of $16.9 billion and employs 22,155 people.

Clean Harbors has agreed to acquire EnviroServe, a national environmental and waste management services provider, for $470 million in cash from an affiliate of One Rock Capital Partners. The transaction is expected to close in the second half of 2026, subject to regulatory approval. Headquartered in Sandy, Utah, EnviroServe operates 40 locations across 48 states, serving nearly 2,500 customers. The company employs over 700 people and operates a specialised fleet of more than 700 vehicles. EnviroServe generates approximately $250 million in revenues and $27 million in adjusted EBITDA annually, with 85% of revenue being recurring. Clean Harbors anticipates $25 million in cost synergies over two years, creating a post-synergy acquisition multiple of approximately nine times adjusted EBITDA. The acquisition will expand Clean Harbors' environmental services network, adding 18 10-day transfer facilities, several solidification facilities, and railcar cleaning locations.

Clean Harbors to acquire EnviroServe in $470 million deal. EnviroServe is a national provider of environmental and waste management services that will expand Clean Harbors' growth opportunities. Published August 12, 2026 Clean Harbors Inc. has entered into a definitive agreement to acquire EnviroServe for $470 million in cash from an affiliate of One Rock Capital Partners LLC. The acquisition is expected to close in the second half of 2026, subject to regulatory approval and other customary closing conditions. Headquartered in Sandy, Utah, EnviroServe operates a network of 40 locations that serves nearly 2,500 customers. Clean Harbors says its national footprint is supported by permits in 48 states. Its operations include 18 strategically located 10-day transfer facilities, several solidification facilities and railcar cleaning locations. EnviroServe employs more than 700 people and operates a specialized fleet of more than 700 vehicles, including more than 100 vacuum trucks. Clean Harbors says its customers span a diverse range of industries with 85 percent of its revenue recurring and the average tenure of tis top 10 customers exceeding 16 years. "Clean Harbors' resources, innovation and commitment to service will enhance our ability to deliver leading recycling and waste management services to our customers," EnviroServe CEO Andy Peyton says. "At the same time, this transaction provides an opportunity for our team members to become part of one of the world's largest and most successful environmental services companies." EnviroServe's capabilities include remediation, rail services, industrial cleaning and emergency response, as well as hazardous and non-hazardous waste transportation and processing. Clean Harbors says EnviroServe's complementary network of 10-day facilities will drive additional waste and recycling volumes through its disposal and recycling sites. "We envision meaningful cross-selling opportunities as their customers will now have direct access to our industry-leading network and broad suite of environmental and industrial services," Clean Harbors Co-CEO Eric Gerstenberg says. "At the same time, EnviroServe's emergency response assets and rail cleaning facilities will enhance our field services business." Clean Harbors adds that EnviroServe also brings considerable synergies in transportation, branch locations and procurement. The firm will help Clean Harbors expand its railcar cleaning capabilities through EnviroServe's five sites. EnviroServe also operates a significant vehicle fleet and a large equipment fleet, including more than 1,400 roll-off containers, vacuum boxes and frac tanks. "The addition of EnviroServe aligns with our capital allocation philosophy of prioritizing profitable growth and margin improvement to drive long-term shareholder returns," Clean Harbors Co-CEO Mike Battles says. "After we realize the approximately $25 million of synergies, we expect this acquisition to be meaningfully accretive to earnings and cash flow. Culturally, we see a great fit with our organization." The EnviroServe deal comes on the heels of a strong second quarter for Clean Harbers. The Norwell, Massachusetts-based firm disclosed during its earnings call that it entered an agreement to acquire ES&H, a leading regional provider of environmental and emergency response services in the Gulf region for $305 million in cash. Sponsored Content Optimal productivity, heavy construction, safety features and operator comfort come together in the SENNEBOGEN 360 G-series telescopic wheel loader, designed for work across the waste and recycling industry. Telescopic wheel loaders manufactured by SENNEBOGEN have a growing presence at transfer stations, material recovery facilities (MRFs), construction and demolition (C&D) recycling plants and metal recycling facilities across North America. Clean Harbors also revealed in its second quarter report that it had won a 10-year disposal contract worth about $600 million with a customer that is expanding its U.S. manufacturing operations. Get curated news on YOUR industry. Enter your email to receive its newsletters.