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 (CLH) issued $600.0 million of 6.250% per annum senior notes due September 30, 2034. The notes are senior unsecured obligations; interest is payable semi-annually on March 31 and September 30, beginning March 31, 2027. The company used $470 million of net proceeds to finance EnviroServe’s purchase price and intends to use the remainder to repay revolving-credit borrowings incurred to partially finance ES&H.
Clean Harbors completed the EnviroServe and ES&H acquisitions for a combined purchase price of $775 million, funded through available cash and the notes offering. ES&H closed on September 18, 2026, and EnviroServe on October 2, 2026. Together, the businesses are expected to generate approximately $340 million in annual revenue and $87 million in post-synergy annual Adjusted EBITDA, a post-synergy acquisition multiple of 8.9 times Adjusted EBITDA.
The indenture restricts Clean Harbors and its restricted subsidiaries from incurring certain additional indebtedness, paying dividends or making other distributions, making investments, creating liens, and transferring or selling assets, among other activities. Certain covenants, including the limit on indebtedness, cease to apply while the notes have investment-grade ratings from any two prescribed rating agencies.
Clean Harbors, Inc. (CLH) has commenced and priced a private offering of $600 million senior notes due 2034. The notes carry a 6.250% interest rate and were priced at 100.000% of their aggregate principal amount for resale to qualified institutional buyers in the United States under Rule 144A and to certain non-U.S. investors under Regulation S.
The company intends to use the net proceeds primarily to finance the purchase price of its previously announced acquisition of EnviroServe and to repay borrowings under its revolving credit facility incurred to partially finance the previously announced ES&H acquisition. The note offering is not contingent on completion of either acquisition; if an acquisition is not completed, remaining proceeds may be used for general corporate purposes. Closing of the issuance and sale of the notes is expected on or about October 1, 2026, subject to customary conditions, and the notes will not be registered under the Securities Act.
CLEAN HARBORS INC (CLH) reported an insider transaction by Co-CEO Eric W. Gerstenberg. On 2026-08-14, he sold 2,500 shares of Common Stock at $321.34 per share in a sale described as an open market or private transaction. Following this sale, he directly holds 56,793 shares of Clean Harbors common stock.
Clean Harbors (CLH) reports a planned sale of common stock through Raymond James & Associates, Inc. The filing covers 2,500 shares of common stock with an aggregate market value of $805,000.00, with a stated sale date of August 14, 2026, on the NYSE. The company also lists recent common stock transactions related to equity compensation on February 1, 2026, March 15, 2026, and July 1, 2026, involving 856, 1,042, and 602 shares, respectively.
CLEAN HARBORS INC executive Eric W. Gerstenberg, Co-CEO, reported a disposition of 564 shares of common stock on 2026-07-01 coded as a payment of tax liability by withholding securities. The shares were valued at $290.74 per share, and his directly held stake after this event is 59,293 shares. A footnote clarifies the transaction represents tax withholding upon vesting under Rule 16b-3, and another footnote corrects the reported total number of shares held.
Clean Harbors Inc. reported an amended insider transaction by Co-CEO Eric W. Gerstenberg. On 2026-03-18, he executed a sale of 1,000 shares of Common Stock at a price of $293.00 per share in an open market or private transaction. Following this sale, his directly held position is reported as 59,857 shares, with a footnote stating this reflects a correction to the total number of shares held.
Clean Harbors Inc. Co-CEO Eric W. Gerstenberg reported two non-derivative dispositions of common stock on March 13, 2026. The first involved 977 shares used for payment of tax liability by withholding shares upon vesting, at a reference price of $288.93 per share, in accordance with Rule 16b. The second was a disposition of 2,166 shares to the issuer, representing restricted stock forfeited because the company did not achieve performance targets under its Long Term Equity Incentive Program. A separate footnote indicates a correction to the total number of shares held, but the updated post-transaction holdings are not stated in this report.
Clean Harbors Inc Co-CEO Eric W. Gerstenberg reported selling 2,500 shares of common stock on 2026-02-23 in a sale classified as an open market or private transaction at $279.86 per share. Following the sale, he directly holds 64,000 shares, with a footnote indicating this filing corrects the total number of shares held.
CLEAN HARBORS INC executive vice president and chief financial officer Eric J. Dugas reported a Form 4/A amendment detailing a code F transaction. On 2026-07-01, 447 shares of common stock were disposed of at $290.74 per share as a payment of tax liability by withholding of securities incident to vesting in accordance with Rule 16b-3. Following this withholding transaction and a correction, Dugas directly held 17,620 shares of common stock.
CLEAN HARBORS INC executive vice president and chief financial officer Eric J. Dugas reported two dispositions of common stock on March 13, 2026. First, 630 shares were withheld at $288.93 per share to pay tax liability upon vesting of equity awards under Rule 16b-3. Second, 1,324 shares of restricted stock were forfeited back to the company because performance targets under its Long Term Equity Incentive Program were not achieved. A footnote also indicates a correction to the total number of shares held, though the corrected balance is not stated here.