Welcome to our dedicated page for Clean Harbors SEC filings (Ticker: CLH), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Tracking how Clean Harbors turns drums of hazardous waste into revenue often means reading a 250-page report packed with environmental regulations and niche accounting rules. Investors looking for segment profitability, waste-volume metrics, or disaster-response margins can spend hours scrolling through a single document. The same challenge appears when you need to spot executive stock sales hidden in Form 4 footnotes. If Clean Harbors’ filings feel impenetrable, you are not alone.
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- Clean Harbors insider trading Form 4 transactions with graphical trends
- Clean Harbors executive stock transactions Form 4 timelines
- Clean Harbors proxy statement executive compensation details broken down by incentive metric
- Clean Harbors 8-K material events explained, from refinery fires to acquisition announcements
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Clean Harbors, Inc. officer Rebecca Underwood, President & EVP Facilities, reported a small tax-related share withholding. On 12/15/2025, 51 shares of common stock were disposed of at $240.71 per share under transaction code “F,” with the explanation stating this represented payment of tax liability by withholding securities upon vesting of equity awards in accordance with Rule 16b-3.
After this transaction, she directly beneficially owns 17,284 shares of Clean Harbors common stock. This reflects a routine insider tax-withholding event rather than an open-market purchase or sale.
Clean Harbors Inc. executive vice president of EHS reported a small, tax-related stock disposition. On 12/15/2025, 16 shares of common stock were withheld at a price of $240.71 per share to pay tax liabilities arising from vesting equity awards, consistent with Rule 16b-3. After this transaction, the officer directly owns 5,785 shares of Clean Harbors common stock.
Clean Harbors Inc. reported an insider equity transaction by its Executive Vice President of Industrial Services. On 12/15/2025, the officer had 28 shares of common stock withheld at a price of $240.71 per share.
The filing explains this was a payment of tax liability by withholding shares incident to the vesting of previously granted securities, in line with Rule 16b-3. After this tax-related withholding, the executive directly beneficially owns 8,814 shares of Clean Harbors common stock.
Clean Harbors Inc. co-CEO Eric W. Gerstenberg reported selling 601 shares of common stock on December 16, 2025 at a price of $240.9 per share. After this insider sale, he beneficially owns 50,454 shares of Clean Harbors common stock held directly.
A holder of the issuer’s common stock filed a notice to sell 601 shares through broker Raymond James & Associates on the NYSE, with an approximate sale date of 12/15/2025 and an aggregate market value of $145,000.00.
The securities are common stock that were acquired on 07/01/2025 from the issuer as equity compensation, with payment on that same date in equity. The issuer reports that 53,431,835 shares of this class are outstanding.
The notice states that the person for whose account the securities are to be sold represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, and it reminds filers that intentional misstatements or omissions can constitute federal criminal violations.
Clean Harbors Inc. executive vice president (CHESI) reported a charitable gift of company stock. On 12/09/2025, the officer made a Form 4 filing showing a disposition of 1,000 shares of Clean Harbors common stock coded as a charitable gift, at a reported price of $0. After this transaction, the officer directly beneficially owns 47,664 shares of Clean Harbors common stock.
Clean Harbors Inc. executive reports small share withholding for taxes. An officer of CLEAN HARBORS INC (CLH), serving as EVP, EHS, reported a Form 4 transaction dated 12/01/2025. The filing shows a disposition of 122 shares of common stock at $228.54 per share, coded as transaction type “F,” which the notes explain was a share withholding to cover tax liabilities on vesting equity under Rule 16b-3.
Following this tax-related transaction, the reporting person directly beneficially owns 5,801 shares of Clean Harbors common stock. This type of event is a routine administrative adjustment tied to equity compensation rather than an open-market purchase or sale.
Clean Harbors (CLH) reported an insider transaction by director Lauren States. On 11/13/2025, she made a bona fide charitable gift (Code G) of 245 shares of common stock at $0, lowering her directly owned stake to 11,496 shares after the transaction. This was a non-cash transfer and reflects a personal donation rather than an open-market trade.
Clean Harbors, Inc. (CLH) reported an insider transaction by its EVP, Industrial Services. On 11/01/2025, the officer had 294 shares withheld at $210.51 per share to cover taxes upon vesting, coded “F” under Rule 16b-3.
Following the transaction, the officer beneficially owned 8,842 shares directly. This filing reflects administrative share withholding for tax purposes rather than an open-market trade.
Clean Harbors (CLH) reported Q3 2025 results with total revenues of $1,549,337 thousand, slightly above last year. Income from operations was $193,009 thousand and net income was $118,799 thousand, resulting in diluted EPS of $2.21. Service revenues grew year over year, while product revenues declined.
Segment mix showed Environmental Services at $1,318,580 thousand and Safety‑Kleen Sustainability Solutions at $230,757 thousand. Within SKSS, Safety‑Kleen Oil revenue was $154,156 thousand versus $182,001 thousand a year ago.
Cash and balance sheet: cash and cash equivalents were $759,197 thousand; net cash from operating activities for the first nine months was $511,632 thousand. Long‑term debt (carrying value) was $2,764,231 thousand.
Post‑quarter financing: the company issued $745,000 thousand of 5.750% senior notes due 2033 and entered into $1,260,000 thousand of new term loans to refinance existing secured term loans and intends to redeem $545,000 thousand of 4.875% notes due 2027. Shares outstanding were 53,431,835 as of October 24, 2025.
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