# Clean Harbors Inc: filings

CLH · NYSE · CIK 822818 · [Utilities](/sectors/utilities.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/clh.md) · [Financials](/companies/clh/financials.md) · [Filings](/companies/clh/filings.md) · [Insiders](/companies/clh/insiders.md)

## Reports and events: 278 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 1505, 8-K 179, 10-Q 53, SC 13G/A 51, 144 50, 5 46, 4/A 45, 3 42, UPLOAD 20, 10-K 18, DEF 14A 18, CORRESP 17, DEFA14A 15, SC 13G 15, ARS 10, 8-K/A 6, SCHEDULE 13G/A 6, 424B3 5, EFFECT 5, S-4 5, S-4/A 5, PRE 14A 3, S-8 3, SC 13D/A 3, 3/A 2, SCHEDULE 13G 2, 424B2 1, 424B5 1, NT 10-K 1, S-3ASR 1, SC 13D 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-05 | 17:06 ET | [8-K](/filings/0000822818-26-000042.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-26-000042 |
| 2026-09-18 | 11:57 ET | [8-K](/filings/0000822818-26-000040.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-26-000040 |
| 2026-08-12 | 12:26 ET | [8-K](/filings/0000822818-26-000037.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-26-000037 |
| 2026-07-29 | 10:56 ET | [10-Q](/filings/0000822818-26-000034.md) | Quarterly report, period 2026-06-30 | 0000822818-26-000034 |
| 2026-07-29 | 08:07 ET | [8-K](/filings/0000822818-26-000031.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-26-000031 |
| 2026-05-20 | 16:41 ET | [8-K](/filings/0000822818-26-000028.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0000822818-26-000028 |
| 2026-05-20 | 16:34 ET | [8-K](/filings/0000822818-26-000027.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000822818-26-000027 |
| 2026-05-14 | 10:55 ET | [8-K](/filings/0000822818-26-000024.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-26-000024 |
| 2026-05-06 | 10:55 ET | [10-Q](/filings/0000822818-26-000020.md) | Quarterly report, period 2026-03-31 | 0000822818-26-000020 |
| 2026-05-06 | 08:12 ET | [8-K](/filings/0000822818-26-000017.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-26-000017 |
| 2026-04-10 | 14:52 ET | [DEF 14A](/filings/0000822818-26-000013.md) | Proxy statement, period 2026-05-20 | 0000822818-26-000013 |
| 2026-02-18 | 13:02 ET | [10-K](/filings/0000822818-26-000009.md) | Annual report, period 2025-12-31 | 0000822818-26-000009 |
| 2026-02-18 | 08:59 ET | [8-K](/filings/0000822818-26-000004.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-26-000004 |
| 2025-10-29 | 10:58 ET | [10-Q](/filings/0000822818-25-000040.md) | Quarterly report, period 2025-09-30 | 0000822818-25-000040 |
| 2025-10-29 | 07:42 ET | [8-K](/filings/0000822818-25-000038.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-25-000038 |
| 2025-10-10 | 14:00 ET | [8-K](/filings/0000822818-25-000036.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000822818-25-000036 |
| 2025-09-26 | 19:20 ET | [8-K](/filings/0000822818-25-000034.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-25-000034 |
| 2025-07-30 | 11:10 ET | [10-Q](/filings/0000822818-25-000030.md) | Quarterly report, period 2025-06-30 | 0000822818-25-000030 |
| 2025-07-30 | 07:45 ET | [8-K](/filings/0000822818-25-000028.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-25-000028 |
| 2025-05-21 | 15:09 ET | [8-K](/filings/0000822818-25-000023.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0000822818-25-000023 |
| 2025-04-30 | 10:53 ET | [10-Q](/filings/0000822818-25-000019.md) | Quarterly report, period 2025-03-31 | 0000822818-25-000019 |
| 2025-04-30 | 07:37 ET | [8-K](/filings/0000822818-25-000017.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-25-000017 |
| 2025-04-11 | 11:03 ET | [DEF 14A](/filings/0000822818-25-000011.md) | Proxy statement, period 2025-05-21 | 0000822818-25-000011 |
| 2025-02-19 | 14:04 ET | [10-K](/filings/0000822818-25-000007.md) | Annual report, period 2024-12-31 | 0000822818-25-000007 |
| 2025-02-19 | 09:10 ET | [8-K](/filings/0000822818-25-000004.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-25-000004 |
| 2024-10-30 | 10:33 ET | [10-Q](/filings/0000822818-24-000045.md) | Quarterly report, period 2024-09-30 | 0000822818-24-000045 |
| 2024-10-30 | 08:17 ET | [8-K](/filings/0000822818-24-000043.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-24-000043 |
| 2024-10-11 | 14:29 ET | [8-K](/filings/0000822818-24-000040.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000822818-24-000040 |
| 2024-09-03 | 08:48 ET | [8-K](/filings/0000822818-24-000037.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000822818-24-000037 |
| 2024-07-31 | 10:11 ET | [10-Q](/filings/0000822818-24-000035.md) | Quarterly report, period 2024-06-30 | 0000822818-24-000035 |
| 2024-07-31 | 07:55 ET | [8-K](/filings/0000822818-24-000032.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-24-000032 |
| 2024-07-02 | 14:59 ET | [8-K](/filings/0000822818-24-000028.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000822818-24-000028 |
| 2024-05-23 | 12:44 ET | [8-K](/filings/0000822818-24-000023.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0000822818-24-000023 |
| 2024-05-01 | 10:26 ET | [10-Q](/filings/0000822818-24-000021.md) | Quarterly report, period 2024-03-31 | 0000822818-24-000021 |
| 2024-05-01 | 08:28 ET | [8-K](/filings/0000822818-24-000019.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-24-000019 |
| 2024-04-10 | 14:40 ET | [DEF 14A](/filings/0000822818-24-000015.md) | Proxy statement, period 2024-05-22 | 0000822818-24-000015 |
| 2024-03-25 | 15:54 ET | [8-K](/filings/0000822818-24-000011.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-24-000011 |
| 2024-02-21 | 11:39 ET | [10-K](/filings/0000822818-24-000008.md) | Annual report, period 2023-12-31 | 0000822818-24-000008 |
| 2024-02-21 | 08:21 ET | [8-K](/filings/0000822818-24-000005.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-24-000005 |
| 2024-02-06 | 09:13 ET | [8-K](/filings/0000822818-24-000002.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-24-000002 |
| 2023-12-28 | 09:38 ET | [8-K](/filings/0000822818-23-000053.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000822818-23-000053 |
| 2023-12-07 | 09:08 ET | [8-K](/filings/0000822818-23-000050.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000822818-23-000050 |
| 2023-11-01 | 11:32 ET | [10-Q](/filings/0000822818-23-000047.md) | Quarterly report, period 2023-09-30 | 0000822818-23-000047 |
| 2023-11-01 | 07:59 ET | [8-K](/filings/0000822818-23-000045.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-23-000045 |
| 2023-08-02 | 11:05 ET | [10-Q](/filings/0000822818-23-000040.md) | Quarterly report, period 2023-06-30 | 0000822818-23-000040 |
| 2023-08-02 | 07:50 ET | [8-K](/filings/0000822818-23-000038.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-23-000038 |
| 2023-05-24 | 13:55 ET | [8-K](/filings/0000822818-23-000035.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0000822818-23-000035 |
| 2023-05-03 | 11:01 ET | [10-Q](/filings/0000822818-23-000033.md) | Quarterly report, period 2023-03-31 | 0000822818-23-000033 |
| 2023-05-03 | 07:55 ET | [8-K](/filings/0000822818-23-000031.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000822818-23-000031 |
| 2023-04-13 | 15:22 ET | [DEF 14A](/filings/0000822818-23-000025.md) | Proxy statement | 0000822818-23-000025 |

Page 1 of 6. [Older](/companies/clh/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 28, 2026, 08:18 ET. No prices; not investment advice.