Clean Harbors Inc (CLH) · Oct 5, 2026 · Acquisition

Clean Harbors closes $775M acquisitions, adds $87M EBITDA

$775M acquisition — ~$340M revenue and ~$87M post-synergy Adjusted EBITDA

Clean Harbors completed its EnviroServe and ES&H acquisitions, expanding waste-transfer, recycling and Gulf emergency-response capabilities. The strategic upside was already announced.

Clean Harbors is expanding its core Environmental Services platform through acquisitions, with Technical Services benefiting from more permitted transfer capacity and Field Services gaining broader emergency-response coverage. Recent company commentary had already positioned Technical Services as a growth engine and Field Services as a business benefiting from major response events, so this closing reinforces an existing strategy rather than changing it.

The transaction is now operationally real, not merely announced. Clean Harbors completed the previously announced purchases of EnviroServe and ES&H for a combined $775 million, funded with cash and a recently completed $600 million senior-notes offering. That removes closing and funding uncertainty, but both acquisitions were expected to close in the second half of 2026 and the debt financing had already been disclosed, making the completion itself largely confirmation rather than a surprise.

MetricFiling figureComparison / implication
Purchase price$775MCombined EnviroServe and ES&H consideration (Transaction details)
Annual revenue~$340MCombined acquired businesses (Transaction details)
Post-synergy Adjusted EBITDA~$87MImplied 8.9x post-synergy purchase multiple (Transaction details)
Senior notes funding$600MRecently completed financing (Transaction details)

The strategic logic is credible but still depends on execution. EnviroServe adds 40 locations, permits in 48 states and 18 ten-day transfer facilities, giving Clean Harbors more ways to collect, process and route waste into its disposal and recycling network. 〔0〕 ES&H adds 13 Gulf-region branches and maritime response capabilities, including the Coast Guard’s highest OSRO classification. 〔1〕 Together, the assets broaden geographic reach and cross-selling opportunities across both major service businesses.

The main new burden is balance-sheet and integration execution, not strategic direction. The filing gives management’s expected post-synergy earnings contribution, but no realized synergies, acquired-period results or updated company-wide guidance. The $600 million notes offering also means the company is using meaningful new debt to fund a deal whose value depends on combining operations and pushing more volume through Clean Harbors’ existing network.

Bottom line: This closes a strategically coherent expansion and makes the expected $87 million EBITDA contribution tangible, but the event is mostly a scheduled confirmation. The real evidence will come from integration progress and reported contribution in subsequent quarters.

What to watch next

Integration and contribution in the next quarterly results

Original filing on SEC EDGAR

More Clean Harbors Inc news

Clean Harbors closes $775M acquisitions, adds $87M EBITDA | CLH Stock News
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