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Clean Harbors Inc. SEC filings

In the twelve months since 9 October 2025 Clean Harbors Inc. filed 18 documents with the SEC of the kinds listed here: 11 current reports (8-K), about 4 other events; 4 results of operations; 2 material agreement; 2 new financial obligation; 1 shareholder vote; 3 quarterly reports (10-Q), 1 annual report to shareholders (ARS), 1 additional proxy material (DEFA14A), 1 proxy statement (DEF 14A), 1 annual report (10-K). The latest, filed 5 October 2026: 8-K, material agreement, new financial obligation, other events.

FiledFormWhat it was aboutPeriod or event dateFiling
5 October 20268-KMaterial agreement, New financial obligation, Other events1 October 2026EDGAR
18 September 20268-KOther events17 September 2026EDGAR
12 August 20268-KOther events12 August 2026EDGAR
29 July 202610-Qquarterly report30 June 2026EDGAR
29 July 20268-KResults of operations29 July 2026EDGAR
20 May 20268-KShareholder vote20 May 2026EDGAR
20 May 20268-KOfficer or director change, Regulation FD disclosure19 May 2026EDGAR
14 May 20268-KOther events14 May 2026EDGAR
6 May 202610-Qquarterly report31 March 2026EDGAR
6 May 20268-KResults of operations6 May 2026EDGAR
10 April 2026ARSannual report to shareholders31 December 2025EDGAR
10 April 2026DEFA14Aadditional proxy materialEDGAR
10 April 2026DEF 14Aproxy statement20 May 2026EDGAR
18 February 202610-Kannual report31 December 2025EDGAR
18 February 20268-KResults of operations18 February 2026EDGAR
29 October 202510-Qquarterly report30 September 2025EDGAR
29 October 20258-KResults of operations29 October 2025EDGAR
10 October 20258-KMaterial agreement, New financial obligation9 October 2025EDGAR
An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened.
Read moreForm 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

The company's filing index on EDGAR, read from the SEC's submissions feed.

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