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CLEAN HARBORS INC
Hazardous Waste Management · MA · CIK 822818
Clean Harbors provides environmental and industrial services, including waste management, recycling, and parts cleaning
red 8-K · 90d
$15.21B
Market cap
$299.80
Last close
-0.6%
1D
+3.6%
5D
410K
Volume
Price · last 39 sessions-3.4%
May 4L $275.99 · H $313.70Jun 29
133
Total filings
May 20, 2026
Last filing
12/31
Fiscal year end
8-KShareholder VoteMay 20, 20268-KExecutive Change · Reg FD DisclosureMay 20, 20268-KCompany UpdateMay 14, 202610-Q10-QMay 6, 20268-KResults of OperationsMay 6, 2026DEFA14ADEFA14AApr 10, 2026DEF 14ADEF 14AApr 10, 202610-K10-KFeb 18, 20268-KResults of OperationsFeb 18, 202610-Q10-QOct 29, 20258-KResults of OperationsOct 29, 20258-KMaterial Agreement · New Debt / ObligationOct 10, 20258-KCompany UpdateSep 26, 202510-Q10-QJul 30, 20258-KResults of OperationsJul 30, 20258-KShareholder VoteMay 21, 202510-Q10-QApr 30, 20258-KResults of OperationsApr 30, 2025DEFA14ADEFA14AApr 11, 2025DEF 14ADEF 14AApr 11, 202510-K10-KFeb 19, 20258-KResults of OperationsFeb 19, 202510-Q10-QOct 30, 20248-KResults of OperationsOct 30, 20248-KMaterial Agreement · New Debt / ObligationOct 11, 20248-KExecutive Change · Reg FD DisclosureSep 3, 202410-Q10-QJul 31, 20248-KResults of OperationsJul 31, 20248-KMaterial Agreement · New Debt / ObligationJul 2, 20248-KExecutive Change · Shareholder VoteMay 23, 202410-Q10-QMay 1, 20248-KResults of OperationsMay 1, 2024DEFA14ADEFA14AApr 10, 2024DEF 14ADEF 14AApr 10, 20248-KMaterial Agreement · New Debt / ObligationMar 25, 202410-K10-KFeb 21, 20248-KResults of OperationsFeb 21, 20248-KCompany UpdateFeb 6, 20248-KMaterial Agreement · New Debt / ObligationDec 28, 20238-KCompany UpdateDec 7, 202310-Q10-QNov 1, 20238-KResults of OperationsNov 1, 202310-Q10-QAug 2, 20238-KResults of OperationsAug 2, 20238-KShareholder VoteMay 24, 202310-Q10-QMay 3, 20238-KResults of OperationsMay 3, 2023DEFA14ADEFA14AApr 13, 2023DEF 14ADEF 14AApr 13, 20238-KReg FD DisclosureMar 29, 20238-KExecutive ChangeMar 16, 202310-K10-KMar 1, 20238-KExecutive ChangeMar 1, 20238-KResults of OperationsMar 1, 20238-KMaterial Agreement · New Debt / ObligationJan 25, 20238-KMaterial Agreement · Company UpdateJan 18, 20238-KReg FD DisclosureJan 17, 202310-Q10-QNov 2, 20228-KExecutive ChangeNov 2, 20228-KResults of OperationsNov 2, 20228-KExecutive ChangeSep 6, 202210-Q10-QAug 3, 20228-KResults of OperationsAug 3, 20228-KShareholder VoteMay 25, 202210-Q10-QMay 4, 20228-KResults of OperationsMay 4, 2022DEFA14ADEFA14AApr 14, 2022DEF 14ADEF 14AApr 14, 20228-KBylaw AmendmentMar 16, 202210-K10-KFeb 23, 20228-KResults of OperationsFeb 23, 202210-Q10-QNov 3, 20218-KResults of OperationsNov 3, 20218-KMaterial Agreement · Acquisition / DispositionOct 12, 20218-KExecutive ChangeSep 10, 202110-Q10-QAug 4, 20218-KMaterial Agreement · Reg FD DisclosureAug 4, 20218-KResults of OperationsAug 4, 20218-KExecutive Change · Shareholder VoteJun 3, 202110-Q10-QMay 5, 2021
Insider Activity
In the 90 days to Mar 18, 2026: 7 sold $62.0M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 18, 2026 | Gerstenberg Eric WCO-CEO | Sell | 1,000 | $293.00 | $293K |
| Mar 18, 2026 | Reed Marcy L.Director | Sell | 836 | $287.94 | $241K |
| Mar 17, 2026 | Weber Brian PEVP (CHESI) | Sell | 4,683 | $293.39 | $1.4M |
| Mar 4, 2026 | Mckim Alan SEXEC CHAIR, CTO. | Sell | 100,000 | $292.65 | $29.3M |
| Feb 23, 2026 | Gerstenberg Eric WCO-CEO | Sell | 2,500 | $279.86 | $700K |
| Feb 20, 2026 | Gabriel Sharon M.EVP/CIO (CHESI) | Sell | 3,540 | $282.07 | $999K |
| Feb 20, 2026 | Dugas Eric J.EVP CHIEF FINANCIAL OFFICER | Sell | 2,788 | $281.31 | $784K |
| Feb 19, 2026 | Mckim Alan SEXEC CHAIR, CTO. | Sell | 100,000 | $281.14 | $28.1M |
| Feb 19, 2026 | Welch John R.Director | Sell | 750 | $273.07 | $205K |
| Dec 16, 2025 | Gerstenberg Eric WCO-CEO | Sell | 601 | $240.90 | $145K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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