Sep 22, 2026
Clean Harbors (CLH): $600 Million in New Debt Raises the Stakes on Acquisition Execution
Clean Harbors (CLH) has issued $600 million in senior notes at a 6.250% interest rate to finance its acquisition strategy, primarily the $470 million acquisition of EnviroServe and to repay debt related to the ES&H acquisition. While these acquisitions aim for margin expansion and growth, the new debt increases financial risk and interest obligations, especially if synergies fall short or if the acquisitions do not close as anticipated. Despite the financial stakes, institutional interest in CLH has grown, with BlackRock being the largest investor.
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