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Clean Harbors Inc SEC Filings
What Clean Harbors Inc has told the SEC happened, by the 8-K items and forms it filed under: when it reported results, who joined or left, what it bought or sold, and whether its auditor or its accounts ever changed.
CLH overview →Filings on file
117
since Sep 30, 2016
Warning signs
0
none filed
Last results
Jul 29, 2026
8-K item 2.02
Industry
Hazardous Waste Management
SIC 4955
Newest first
Each label is a form type or an 8-K item as filed; each row links to the filing.
| Filed | What it reports | Document |
|---|---|---|
| Oct 5, 2026 | Material agreementNew debt 8-K | Read ↗ |
| Jul 29, 2026 | Quarterly report 10-Q | Read ↗ |
| Jul 29, 2026 | Results announced 8-K | Read ↗ |
| May 20, 2026 | Shareholder vote 8-K | Read ↗ |
| May 20, 2026 | Executive or director change 8-K | Read ↗ |
| May 6, 2026 | Quarterly report 10-Q | Read ↗ |
| May 6, 2026 | Results announced 8-K | Read ↗ |
| Feb 18, 2026 | Annual report 10-K | Read ↗ |
| Feb 18, 2026 | Results announced 8-K | Read ↗ |
| Oct 29, 2025 | Quarterly report 10-Q | Read ↗ |
| Oct 29, 2025 | Results announced 8-K | Read ↗ |
| Oct 10, 2025 | Material agreementNew debt 8-K | Read ↗ |
| Jul 30, 2025 | Quarterly report 10-Q | Read ↗ |
| Jul 30, 2025 | Results announced 8-K | Read ↗ |
| May 21, 2025 | Shareholder vote 8-K | Read ↗ |
| Apr 30, 2025 | Quarterly report 10-Q | Read ↗ |
| Apr 30, 2025 | Results announced 8-K | Read ↗ |
| Feb 19, 2025 | Annual report 10-K | Read ↗ |
| Feb 19, 2025 | Results announced 8-K | Read ↗ |
| Oct 30, 2024 | Quarterly report 10-Q | Read ↗ |
| Oct 30, 2024 | Results announced 8-K | Read ↗ |
| Oct 11, 2024 | Material agreementNew debt 8-K | Read ↗ |
| Sep 3, 2024 | Executive or director change 8-K | Read ↗ |
| Jul 31, 2024 | Quarterly report 10-Q | Read ↗ |
| Jul 31, 2024 | Results announced 8-K | Read ↗ |
| Jul 2, 2024 | Material agreementNew debt 8-K | Read ↗ |
| May 23, 2024 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 1, 2024 | Quarterly report 10-Q | Read ↗ |
| May 1, 2024 | Results announced 8-K | Read ↗ |
| Mar 25, 2024 | Material agreementNew debt 8-K | Read ↗ |
| Feb 21, 2024 | Annual report 10-K | Read ↗ |
| Feb 21, 2024 | Results announced 8-K | Read ↗ |
| Dec 28, 2023 | Material agreementNew debt 8-K | Read ↗ |
| Nov 1, 2023 | Quarterly report 10-Q | Read ↗ |
| Nov 1, 2023 | Results announced 8-K | Read ↗ |
| Aug 2, 2023 | Quarterly report 10-Q | Read ↗ |
| Aug 2, 2023 | Results announced 8-K | Read ↗ |
| May 24, 2023 | Shareholder vote 8-K | Read ↗ |
| May 3, 2023 | Quarterly report 10-Q | Read ↗ |
| May 3, 2023 | Results announced 8-K | Read ↗ |
| Mar 16, 2023 | Executive or director change 8-K | Read ↗ |
| Mar 1, 2023 | Annual report 10-K | Read ↗ |
| Mar 1, 2023 | Executive or director change 8-K | Read ↗ |
| Mar 1, 2023 | Results announced 8-K | Read ↗ |
| Jan 25, 2023 | Material agreementNew debt 8-K | Read ↗ |
| Jan 18, 2023 | Material agreement 8-K | Read ↗ |
| Nov 2, 2022 | Quarterly report 10-Q | Read ↗ |
| Nov 2, 2022 | Executive or director change 8-K | Read ↗ |
| Nov 2, 2022 | Results announced 8-K | Read ↗ |
| Sep 6, 2022 | Executive or director change 8-K | Read ↗ |
| Aug 3, 2022 | Quarterly report 10-Q | Read ↗ |
| Aug 3, 2022 | Results announced 8-K | Read ↗ |
| May 25, 2022 | Shareholder vote 8-K | Read ↗ |
| May 4, 2022 | Quarterly report 10-Q | Read ↗ |
| May 4, 2022 | Results announced 8-K | Read ↗ |
| Feb 23, 2022 | Annual report 10-K | Read ↗ |
| Feb 23, 2022 | Results announced 8-K | Read ↗ |
| Nov 3, 2021 | Quarterly report 10-Q | Read ↗ |
| Nov 3, 2021 | Results announced 8-K | Read ↗ |
| Oct 12, 2021 | Acquisition or sale completedMaterial agreementNew debt 8-K | Read ↗ |
| Sep 10, 2021 | Executive or director change 8-K | Read ↗ |
| Aug 4, 2021 | Quarterly report 10-Q | Read ↗ |
| Aug 4, 2021 | Material agreement 8-K | Read ↗ |
| Aug 4, 2021 | Results announced 8-K | Read ↗ |
| Jun 3, 2021 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 5, 2021 | Quarterly report 10-Q | Read ↗ |
| Feb 24, 2021 | Annual report 10-K | Read ↗ |
| Feb 24, 2021 | Results announced 8-K | Read ↗ |
| Nov 4, 2020 | Quarterly report 10-Q | Read ↗ |
| Nov 4, 2020 | Results announced 8-K | Read ↗ |
| Oct 30, 2020 | Material agreement 8-K | Read ↗ |
| Aug 5, 2020 | Quarterly report 10-Q | Read ↗ |
| Aug 5, 2020 | Results announced 8-K | Read ↗ |
| Jun 3, 2020 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Apr 29, 2020 | Quarterly report 10-Q | Read ↗ |
| Apr 29, 2020 | Results announced 8-K | Read ↗ |
| Feb 26, 2020 | Annual report 10-K | Read ↗ |
| Feb 26, 2020 | Results announced 8-K | Read ↗ |
| Dec 17, 2019 | Executive or director change 8-K | Read ↗ |
| Oct 30, 2019 | Quarterly report 10-Q | Read ↗ |
| Oct 30, 2019 | Results announced 8-K | Read ↗ |
| Jul 31, 2019 | Quarterly report 10-Q | Read ↗ |
| Jul 31, 2019 | Results announced 8-K | Read ↗ |
| Jul 3, 2019 | Material agreementNew debt 8-K | Read ↗ |
| Jun 19, 2019 | Material agreement 8-K | Read ↗ |
| Jun 6, 2019 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 9, 2019 | Executive or director change 8-K | Read ↗ |
| May 1, 2019 | Quarterly report 10-Q | Read ↗ |
| May 1, 2019 | Results announced 8-K | Read ↗ |
| Feb 27, 2019 | Annual report 10-K | Read ↗ |
| Feb 27, 2019 | Results announced 8-K | Read ↗ |
| Oct 31, 2018 | Quarterly report 10-Q | Read ↗ |
| Oct 31, 2018 | Results announced 8-K | Read ↗ |
| Aug 1, 2018 | Quarterly report 10-Q | Read ↗ |
| Aug 1, 2018 | Results announced 8-K | Read ↗ |
| Jul 20, 2018 | Material agreementNew debt 8-K | Read ↗ |
| Jun 6, 2018 | Shareholder vote 8-K | Read ↗ |
| May 2, 2018 | Quarterly report 10-Q | Read ↗ |
| May 2, 2018 | Results announced 8-K | Read ↗ |
| Apr 17, 2018 | Material agreementNew debt 8-K | Read ↗ |
| Feb 28, 2018 | Annual report 10-K | Read ↗ |
| Feb 28, 2018 | Results announced 8-K/A | Read ↗ |
| Feb 28, 2018 | Results announcedAcquisition or sale completed 8-K | Read ↗ |
| Nov 1, 2017 | Quarterly report 10-Q | Read ↗ |
| Nov 1, 2017 | Results announced 8-K | Read ↗ |
| Aug 2, 2017 | Quarterly report 10-Q | Read ↗ |
| Aug 2, 2017 | Results announced 8-K | Read ↗ |
| Jun 30, 2017 | Material agreementNew debt 8-K | Read ↗ |
| Jun 9, 2017 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 3, 2017 | Quarterly report 10-Q | Read ↗ |
| May 3, 2017 | Results announced 8-K | Read ↗ |
| Feb 22, 2017 | Annual report 10-K | Read ↗ |
| Feb 22, 2017 | Results announced 8-K | Read ↗ |
| Nov 2, 2016 | Quarterly report 10-Q | Read ↗ |
| Nov 2, 2016 | Results announced 8-K | Read ↗ |
| Nov 2, 2016 | Material agreement 8-K | Read ↗ |
| Sep 30, 2016 | Executive or director change 8-K | Read ↗ |
Source: Clean Harbors Inc's EDGAR filing history, the last ten years. The labels are the form types and 8-K item numbers the company filed under, not a reading of what it wrote — an item 5.02 can be a chief executive fired or a director retiring on schedule — so each row links to the filing.
More on CLH
Company overviewEverything on CLH in one place, with the price.Insider tradingWhat CLH's own officers and directors buy and sell.Who owns itEvery manager reporting a position in CLH.Funds holding itWhich funds and ETFs hold CLH, and how big a bet.LobbyingWhat CLH spends lobbying Congress, and on what.Who lobbies for itThe lobbyists on CLH's account, and who they worked for.Federal contractsWhat federal agencies pay CLH.PatentsWhat CLH is filing at the patent office.Workplace safetyWhat OSHA found at CLH's sites.