Clean Harbors Closes $775M EnviroServe and ES&H Acquisitions
CLH sits 58% above its 52-week low of $201.34.
Summary
Clean Harbors completed its acquisitions of EnviroServe and ES&H for a combined $775 million, funded with cash and the recent $600 million notes offering. The ES&H acquisition closed September 18, 2026 and EnviroServe closed October 2, 2026; $470 million of notes proceeds funded EnviroServe, with the remainder used to repay revolver borrowings for ES&H. The deals add about $340 million in annual revenue and $87 million in post-synergy Adjusted EBITDA, at an 8.9x multiple. This follows the August announcement of the EnviroServe deal and the September debt raise. The acquisitions expand Clean Harbors' Technical Services and Field Services footprint, particularly in the Gulf region and emergency response.
Updated with an SEC 8-K filing · What changed
Updates
· SEC 8-K — The 8-K states the ES&H acquisition closed September 18, 2026 and EnviroServe closed October 2, 2026; $470M of notes proceeds funded EnviroServe, remainder to repay revolver borrowings for ES&H.
At the time of this announcement, CLH was trading at $318.51 on NYSE in the Industrial Applications And Services sector, with a market capitalization of approximately $16.8B. The 52-week trading range was $201.34 to $335.94. This news item was assessed with positive market sentiment and an importance score of 7 out of 10. Source: BusinessWire.