Clean Harbors issues $600M 6.250% senior notes due 2034 to fund $775M EnviroServe, ES&H deals

CLEAN HARBORS INC

$600M of 6.250% senior notes due September 30, 2034; semi-annual interest on March 31 and September 30, first payment March 31, 2027.
Proceeds: $470M funds the EnviroServe acquisition (closed October 2, 2026); the remainder repays revolver borrowings used for ES&H (closed September 18, 2026).
Combined purchase price of $775M for EnviroServe and ES&H, which are expected to add ~$340M of annual revenue and ~$87M of post-synergy Adjusted EBITDA (8.9x multiple).
EnviroServe: Sandy, Utah-based, serves nearly 2,500 customers via 40 locations, permits in 48 states and 18 10-day transfer facilities.
ES&H: Louisiana-based with 13 coastal service branches and the U.S. Coast Guard's highest Oil Spill Response Organization classification.

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