Clean Harbors Reports Strong Q1 Results, Raises Full-Year Adjusted EBITDA and Free Cash Flow Guidance
CLH sits 56% above its 52-week low of $201.34.
Summary
Clean Harbors announced better-than-expected first-quarter 2026 financial results, including record Q1 revenue and increased profitability, leading to a significant raise in its full-year Adjusted EBITDA and Adjusted Free Cash Flow guidance.
Key Events · Earnings and Guidance · CLH
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Record Q1 Revenue Achieved
The company delivered its highest Q1 revenue in history, reaching $1.46 billion for the first quarter ended March 31, 2026.
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Strong Profitability Growth
Clean Harbors reported a 6% increase in Q1 Adjusted EBITDA to $247.9 million and expanded its Adjusted EBITDA margin by 60 basis points year-over-year.
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Full-Year Guidance Raised
The midpoint of the 2026 Adjusted EBITDA guidance was raised by $40 million to $1.27 billion, and the Adjusted Free Cash Flow guidance midpoint was increased by $10 million to $520 million.
Analysis · CLH · Energy & Transportation
Clean Harbors' strong first-quarter performance, marked by its highest-ever Q1 revenue and improved Adjusted EBITDA margins across both segments, demonstrates operational efficiency and robust demand. The decision to raise full-year guidance for both Adjusted EBITDA and Adjusted Free Cash Flow signals management's confidence in continued growth and profitability, reinforcing the company's positive trajectory, especially as it trades near its 52-week high.
How filings like this one have moved
In the 30 days to Oct 1, 2026, 30.2% of the 1644 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.49%. These are measured outcomes after filings of this importance, not a forecast for this one.
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At the time of this filing, CLH was trading at $313.70 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $16.7B. The 52-week trading range was $201.34 to $316.98. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.