Founder Alan S. McKim to Retire as Executive Chairman and CTO
CLH sits 45% above its 52-week low of $201.34.
Summary
Clean Harbors announced the planned retirement of its founder, Alan S. McKim, from his Executive Chairman and CTO roles, signaling a significant leadership transition towards an independent board.
Key Events · Executive and Board Changes · CLH
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Founder's Retirement Announced
Alan S. McKim, who founded Clean Harbors in 1980, will retire from his positions as Executive Chairman of the Board and Chief Technology Officer.
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Planned Leadership Transition
His retirement is effective upon the Board's appointment of a new independent Chairman, which is anticipated to occur in the summer of 2026 as part of a planned leadership transition.
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Amicable Departure
The company explicitly stated that Mr. McKim's decision to retire does not stem from any disagreement with the company's operations, policies, or practices.
Analysis · CLH · Energy & Transportation
Alan S. McKim, who founded Clean Harbors in 1980, will retire from his roles as Executive Chairman and Chief Technology Officer in summer 2026. This marks a significant leadership transition for the company, moving towards an independent Chairman. The company stated the retirement is part of a planned transition and not due to any disagreements, aiming for a smooth handover.
How filings like this one have moved
In the 30 days to Oct 5, 2026, 36.9% of the 964 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.65%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, CLH was trading at $291.40 on NYSE in the Energy & Transportation sector, with a market capitalization of approximately $15.4B. The 52-week trading range was $201.34 to $316.98. This filing was assessed with neutral market sentiment and an importance score of 8 out of 10.