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.
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.
Clean Harbors, Inc. reported modestly higher results for the quarter ended March 31, 2026. Direct revenues reached $1.46 billion, up from $1.43 billion a year earlier, driven by growth in Environmental Services, partly offset by lower Safety-Kleen Sustainability Solutions (SKSS) revenues.
Net income rose to $63.2 million from $58.7 million, with diluted EPS of $1.19 versus $1.09. Adjusted EBITDA increased to $247.9 million, or 17.0% of direct revenues. Environmental Services revenues grew 3.6%, helped by higher Technical Services, Safety-Kleen core services, and emergency response work, while SKSS revenues declined 7.1% due mainly to lower pricing on base and blended oil products.
Operating cash flow was $6.3 million, and adjusted free cash flow was an outflow of $75.8 million, reflecting $98.4 million of capital spending and early-year working capital use. The company closed a $131.8 million acquisition of certain Depot Connect International environmental businesses and ended the quarter with $669.0 million in cash and marketable securities against $2.79 billion of long-term debt.
Clean Harbors reported record first-quarter 2026 revenue of $1.46 billion, modestly above the prior year. Income from operations rose to $118.9 million, while net income increased to $63.2 million, or $1.19 per diluted share, up from $1.09 a year earlier.
Adjusted EBITDA grew 6% to $247.9 million, with margin improving to 17.0% from 16.4%, reflecting higher profitability in both Environmental Services and Safety-Kleen Sustainability Solutions. The ES segment benefited from higher disposal, PFAS-related work and strong landfill volumes, while SKSS saw better charge‑for‑oil pricing and stronger base oil prices.
The company raised its full‑year 2026 outlook, now expecting Adjusted EBITDA of $1.24 billion to $1.30 billion and adjusted free cash flow of $490 million to $550 million. Despite these improvements, adjusted free cash flow for the quarter was a negative $75.8 million, largely due to significant capital spending and growth investments.
Clean Harbors, Inc. is holding its 2026 annual shareholder meeting on May 20, 2026 at 10:00 a.m. local time in Norwell, Massachusetts. Shareholders will vote to elect four Class I directors to serve until the 2029 meeting, hold a non-binding advisory vote on executive compensation, and ratify Deloitte & Touche LLP as independent auditor for the year ending December 31, 2026.
Shareholders of record at the close of business on March 23, 2026, when 53,313,462 common shares were outstanding, are entitled to vote. The company uses a “notice and access” system for proxy materials and emphasizes that brokers cannot vote on director elections or say‑on‑pay without specific instructions from beneficial owners.