Company facts
- Industry
- Hazardous Waste Management
- Headquarters
- Norwell, Massachusetts
- Most recent report
- 10-Q, filed Oct 28, 2026
- Incorporated
- Massachusetts
- Filings on record
- 1,004+ filings
- On EDGAR
- CIK 822818
- Fiscal year ends
- December
- Filer status
- Large accelerated filer
Financials 8 of 35
News 8 of 85
Prospectuses and Registrations 2
Proxies 8 of 19
- DEFA14A Extra proxy material Apr 10, 2026
- DEF 14A Proxy statement for a shareholder vote Apr 10, 2026
- DEFA14A Extra proxy material Apr 11, 2025
- DEF 14A Proxy statement for a shareholder vote Apr 11, 2025
- DEFA14A Extra proxy material Apr 10, 2024
- DEF 14A Proxy statement for a shareholder vote Apr 10, 2024
- DEFA14A Extra proxy material Apr 13, 2023
- DEF 14A Proxy statement for a shareholder vote Apr 13, 2023
Ownership 8 of 859
- 4 Insider reported a trade Nov 3, 2026
- 4 Insider reported a trade Nov 2, 2026
- 4 Insider reported a trade Aug 18, 2026
- 144 Notice of a proposed sale of restricted stock Aug 14, 2026
- 4/A Insider reported a trade, amended Aug 14, 2026
- 4/A Insider reported a trade, amended Aug 14, 2026
- 4/A Insider reported a trade, amended Aug 14, 2026
- 4/A Insider reported a trade, amended Aug 14, 2026
Other 4
Everything here comes from Clean Harbors Inc's own filings on SEC EDGAR. The filing list is rechecked every hour.