Shares of Clean Harbors (CLH) surged 7.02% in pre-market trading on Wednesday after the environmental services company reported second-quarter financial results that significantly exceeded analyst expectations, raised its full-year guidance, and announced a major new ten-year disposal contract.

The company posted adjusted earnings per share of $3.22, crushing the analyst consensus estimate of $2.77. Revenue for the quarter came in at $1.74 billion, a 12% increase from the prior year, and well above the $1.64 billion Wall Street forecast. Adjusted EBITDA grew 22% to $409 million, driven by strong demand in its Environmental Services segment for disposal and recycling, remediation projects, and PFAS-related work, as well as a sharp uptick in market pricing for re-refined products in its SKSS segment.

Looking ahead, Clean Harbors raised its 2026 adjusted EBITDA guidance to a range of $1.35 billion to $1.41 billion and increased its adjusted free cash flow outlook to $520 million to $580 million. The company also announced it had won a ten-year disposal contract valued at an estimated $600 million, which is expected to begin contributing in the fourth quarter and reach full capacity in 2030, further bolstering the long-term growth outlook.