Clean Harbors, Inc. filed an 8-K with the SEC on September 18, 2026, disclosing that on September 17, 2026, it commenced and priced a private offering of 6.250% senior notes due 2034.

Key Highlights

  • Offering announced and priced same day: Clean Harbors both commenced and priced its senior notes offering on September 17, 2026.
  • Coupon rate: The notes carry a fixed interest rate of 6.250%.
  • Maturity: The senior notes are due 2034.
  • Qualified buyers only: The offering is limited to persons reasonably believed to be "qualified institutional buyers" under Rule 144A and certain non-U.S. persons under Regulation S.
  • Private placement: The offering is not a public offer; the filing states it does not constitute an offer to sell or a solicitation of an offer to buy the notes.
  • Signed by CFO: The report was signed by Eric J. Dugas, Executive Vice President and Chief Financial Officer.

Clean Harbors Launches and Prices 6.250% Senior Notes in a Single Day

According to the filing, Clean Harbors, Inc. (NYSE:CLH), headquartered at 42 Longwater Drive, Norwell, Massachusetts, issued two press releases on September 17, 2026. The first announced the commencement of a private offering of senior notes due 2034, and the second announced the pricing of those notes at a coupon of 6.250%. Both press releases are attached to the filing as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated by reference into Item 8.01.

The company disclosed that the offering is being made to persons reasonably believed to be "qualified institutional buyers" in the United States, as defined in Rule 144A under the Securities Act of 1933, as amended, and to certain non-U.S. persons outside the United States in offshore transactions pursuant to Regulation S under the Securities Act. The filing explicitly states that neither the 8-K nor the attached press releases "constitute an offer to sell, or the solicitation of an offer to buy, the Notes."

The filing was submitted under Item 8.01 (Other Events) and signed on September 18, 2026, by Eric J. Dugas in his capacity as Executive Vice President and Chief Financial Officer of Clean Harbors, Inc. No additional financial terms, total offering size, or use-of-proceeds details were included in the body of the 8-K itself.

What Was Disclosed

Clean Harbors reported the commencement and same-day pricing of a private offering of 6.250% senior notes due 2034, structured under Rule 144A and Regulation S, with full press releases attached as exhibits to the filing.