| 2026-08-12 | Press release | Clean Harbors to Acquire EnviroServe for $470 Million |
| 2026-08-12 | 8-K | Form 8-K, Item 8.01 |
| 2026-07-29 | Press release | Clean Harbors Announces Second-Quarter 2026 Financial Results |
| 2026-07-29 | 8-K | Form 8-K, Item 2.02 results |
| 2026-07-29 | 10-Q | Form 10-Q for the quarter ended Jun 30 |
| 2026-07-29 | Transcript | Q2 FY26 earnings call transcript |
| 2026-07-16 | Press release | Clean Harbors Appoints Robert Willett Chairman of the Board |
| 2026-07-08 | Press release | Clean Harbors to Announce Second-Quarter 2026 Financial Results on July 29 |
| 2026-06-19 | Deck | Investor Presentation June 2026 |
| 2026-05-20 | Press release | Clean Harbors Announces Retirement of Founder and Executive Chairman Alan S. McKim |
| 2026-05-20 | 8-K | Form 8-K, Item 5.02 |
| 2026-05-20 | 8-K | Form 8-K, Item 5.07 |
| 2026-05-14 | Press release | Clean Harbors Announces Acquisition of Terra Nova Solutions |
| 2026-05-14 | 8-K | Form 8-K, Item 8.01 |
| 2026-05-06 | Deck | First Quarter 2026 Investor Review |
| 2026-05-06 | Press release | Clean Harbors Announces First-Quarter 2026 Financial Results |
| 2026-05-06 | 8-K | Form 8-K, Item 2.02 results |
| 2026-05-06 | 10-Q | Form 10-Q for the quarter ended Mar 31 |
| 2026-04-23 | Press release | Clean Harbors to Participate in 21st Annual Oppenheimer Industrial Growth Conference on May 7 |
| 2026-04-10 | Proxy | Definitive proxy statement |
| 2026-04-01 | Press release | Clean Harbors Formally Releases PFAS Disposal and Treatment Guidance Standards to Assist Customers and Communities with |
| 2026-02-19 | Press release | Clean Harbors to Participate in Raymond James Investor Conference on March 3 |
| 2026-02-19 | Transcript | Q4 FY25 earnings call transcript |
| 2026-02-18 | Deck | Fourth Quarter 2025 Investor Review |
| 2026-02-18 | Press release | Clean Harbors Announces Fourth-Quarter and Full-Year 2025 Financial Results |
| 2026-02-18 | 8-K | Form 8-K, Item 2.02 results |
| 2026-02-18 | 10-K | Annual report on Form 10-K, FY25 |
| 2026-01-28 | Press release | Clean Harbors to Announce Fourth-Quarter and Full-Year 2025 Financial Results on February 18 |
| 2026-01-06 | Press release | Clean Harbors to Participate in Upcoming Investor Conferences |
| 2025-10-29 | Deck | Third Quarter 2025 Investor Review |
| 2025-10-29 | Press release | Clean Harbors Announces Third-Quarter 2025 Financial Results |
| 2025-10-29 | 8-K | Form 8-K, Item 2.02 results |
| 2025-10-29 | 10-Q | Form 10-Q for the quarter ended Sep 30 |
| 2025-10-10 | 8-K | Form 8-K, Item 1.01 |
| 2025-09-26 | 8-K | Form 8-K, Item 8.01 |
| 2025-07-31 | Transcript | Q2 FY25 earnings call transcript |
| 2025-07-30 | Deck | Second Quarter 2025 Investor Review |
| 2025-07-30 | Press release | Clean Harbors Announces Second-Quarter 2025 Financial Results |
| 2025-07-30 | 8-K | Form 8-K, Item 2.02 results |
| 2025-07-30 | 10-Q | Form 10-Q for the quarter ended Jun 30 |