| 2026-08-12 | Press release | Clean Harbors to Acquire EnviroServe for $470 Million |
| 2026-07-29 | Press release | Clean Harbors Announces Second-Quarter 2026 Financial Results |
| 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 | Presentation | Investor Presentation June 2026 |
| 2026-05-20 | Press release | Clean Harbors Announces Retirement of Founder and Executive Chairman Alan S. McKim |
| 2026-05-14 | Press release | Clean Harbors Announces Acquisition of Terra Nova Solutions |
| 2026-05-05 | Presentation | First Quarter 2026 Investor Review |
| 2026-05-06 | Press release | Clean Harbors Announces First-Quarter 2026 Financial Results |
| 2026-04-23 | Press release | Clean Harbors to Participate in 21st Annual Oppenheimer Industrial Growth Conference on May 7 |
| 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 |
| 2026-02-18 | Presentation | Fourth Quarter 2025 Investor Review |
| 2026-02-18 | Press release | Clean Harbors Announces Fourth-Quarter and Full-Year 2025 Financial Results |
| 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 |
| 2025-10-28 | Presentation | Third Quarter 2025 Investor Review |
| Press release | Clean Harbors Announces Third-Quarter 2025 Financial Results |
| 2025-07-29 | Presentation | Second Quarter 2025 Investor Review |
| Press release | Clean Harbors Announces Second-Quarter 2025 Financial Results |
| 2025-04-29 | Presentation | First Quarter 2025 Investor Review |
| Press release | Clean Harbors Announces First-Quarter 2025 Financial Results |
| 2025-02-19 | Press release | Clean Harbors Announces Fourth-Quarter 2024 Financial Results |
| 2024-10-30 | Press release | Clean Harbors Announces Third-Quarter 2024 Financial Results |
| 2024-07-31 | Press release | Clean Harbors Announces Second-Quarter 2024 Financial Results |
| 2023-05-03 | Press release | Clean Harbors Announces First-Quarter 2023 Financial Results |
| 2023-03-01 | Press release | Clean Harbors Announces Fourth-Quarter and Full-Year 2022 Financial Results |
| 2022-11-02 | Press release | Clean Harbors Announces Third-Quarter 2022 Financial Results |
| 2022-08-03 | Press release | Clean Harbors Announces Record Second-Quarter 2022 Financial Results |
| 2022-05-04 | Press release | Clean Harbors Announces First-Quarter 2022 Financial Results |
| 2021-11-03 | Press release | Clean Harbors Announces Third-Quarter 2021 Financial Results |
| 2021-02-24 | Earnings deck | Fourth Quarter 2020 Investor Review |
| 2020-04-29 | Earnings deck | First Quarter 2020 Investor Review |