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.
Clean Harbors, Inc. SEC filings document formal disclosures for an environmental and industrial services company operating through Environmental Services and Safety-Kleen Sustainability Solutions. Form 8-K reports furnish operating and financial results, including segment performance, revenue, operating income, adjusted EBITDA, cash flow, guidance and share repurchase activity tied to hazardous waste management, industrial services, recycling and used-oil re-refining.
The company’s filings also cover capital-structure and governance matters. Material-event filings describe debt financing activity, including senior notes due 2033 and related refinancing arrangements. Proxy statements document board and shareholder voting matters, executive compensation, pay-versus-performance disclosures and other governance information for Clean Harbors’ public-company structure.
GALANTE EDWARD G reported acquisition or exercise transactions in this Form 4 filing.
Clean Harbors Inc. director Edward G. Galante received an award of 652 shares of restricted common stock on May 20, 2026 as a grant with no cash price per share. The award vests 100% on the date of the next annual meeting of shareholders. Following this grant, he holds 25,461 common shares directly.
Polito Karyn reported acquisition or exercise transactions in this Form 4 filing.
Clean Harbors director Karyn Polito received an equity grant of 652 shares of Common Stock as restricted stock, with no cash paid per share. The award was granted as compensation for service as a non-employee director and vests 100% on the date of the next annual meeting of shareholders. Following this grant, she directly holds 4,127 shares of Clean Harbors common stock.
Clean Harbors, Inc. reported the results of its 2026 Annual Meeting of Shareholders. As of the March 23, 2026 record date, 53,313,462 common shares were outstanding, and 50,078,328 shares were present or represented, establishing a quorum.
Shareholders elected four Class I directors — Edward G. Galante, Alison A. Quirk, Shelley Stewart, Jr., and John R. Welch — to serve until the 2029 annual meeting and until their successors are elected and qualified. Each director nominee received substantially more votes "for" than votes withheld.
On an advisory basis, shareholders approved the compensation of the company’s named executive officers, with 45,913,184 votes for, 2,642,421 against, and 16,190 abstentions, plus 1,506,533 broker non-votes. Shareholders also ratified Deloitte & Touche LLP as independent registered public accounting firm for the fiscal year ending December 31, 2026, with 47,766,968 votes for, 2,300,898 against, and 10,462 abstentions.
Clean Harbors, Inc. announced that Founder and Executive Chairman Alan S. McKim plans to retire from the Board and his role as Chief Technology Officer once the Board appoints a new Chairman. The company expects to name an independent Chair in the summer of 2026 as part of a planned leadership transition.
The company states that McKim’s decision does not result from any disagreement over operations, policies or practices. The accompanying press release highlights his role in building Clean Harbors into a leading environmental and industrial services provider with more than $6 billion in annual revenue.
Clean Harbors Inc. ownership disclosure: D1 Capital Partners L.P. and Daniel Sundheim report beneficial ownership of 1,338,281 shares of Common Stock, representing 2.5% of the class. The percentage is calculated using 52,910,946 shares outstanding as of February 11, 2026 from the 2025 Form 10-K.
The statement identifies shared voting and dispositive power over the 1,338,281 shares and notes the Investment Vehicle holds the economic interests. Signatures are dated May 15, 2026.
Wellington Management Group LLP and related Wellington entities reported beneficial ownership of 3,576,062 shares of Clean Harbors, Inc. common stock, representing 6.76% as of 03/31/2026. The filing lists shared voting power of 3,017,643 shares and shared dispositive power of 3,576,062 shares across the reporting entities. The holdings are recorded as owned of record by clients of Wellington investment advisers and involve multiple affiliated entities in Massachusetts and Delaware.
Clean Harbors, Inc. has completed the all-cash acquisition of Terra Nova Solutions for $225 million, funded with available cash. Terra Nova is a Carolinas-based provider of hazardous and non-hazardous waste services operating five permitted sites with recurring revenue streams from wastewater treatment, solidification and waste processing.
Clean Harbors expects Terra Nova to generate $45 million-$50 million of annual revenue and about $15 million of Adjusted EBITDA. Management anticipates roughly $4 million of annual synergies after the first full year, implying a post-synergy acquisition multiple of 11.8x. The deal is intended to strengthen Clean Harbors’ Technical Services and Field Services businesses, expand waste-handling capacity in the Carolinas and add cross-selling opportunities.
CLEAN HARBORS INC director Karyn Polito reported an open-market purchase of 460 shares of Common Stock at $295.13 per share. This trade on May 11 increased her direct holdings to 3,475 shares. The amended Form 4 corrects a clerical error in the transaction code.
Clean Harbors Inc. director Karyn Polito received a grant of 460 shares of Common Stock on May 11, 2026. The shares were awarded at $295.13 per share, described as a grant, award, or other acquisition rather than an open-market purchase. Following this award, Polito directly holds 3,475 shares of Clean Harbors common stock.
CLEAN HARBORS INC director Andrea Robertson reported a charitable stock gift. On May 11, 2026, she transferred 342 shares of Common Stock as a bona fide gift at a stated price of $0.00 per share. After this disposition, she directly holds 9,116 shares of CLEAN HARBORS INC Common Stock.