| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2024-02-14 | Select Equity Group, L.P. | CLEAN HARBORS INC | 2,957,014 | 5.5% | EDGAR |
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | CLEAN HARBORS INC | 4,779,072 | 8.8% | EDGAR |
| SC 13G/A | 2024-02-08 | WELLINGTON MANAGEMENT GROUP LLP | CLEAN HARBORS INC | 3,654,929 | 6.8% | EDGAR |
| SC 13G/A | 2024-01-25 | BlackRock Inc. | CLEAN HARBORS INC | 4,393,473 | 8.1% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | CLEAN HARBORS INC | 5,043,713 | 9.3% | EDGAR |
| SC 13G/A | 2023-02-06 | WELLINGTON MANAGEMENT GROUP LLP | CLEAN HARBORS INC | 5,148,399 | 9.5% | EDGAR |
| SC 13G/A | 2023-02-03 | BlackRock Inc. | CLEAN HARBORS INC | 4,358,812 | 8.1% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | CLEAN HARBORS INC | 4,721,799 | 8.7% | EDGAR |
| SC 13G/A | 2022-02-04 | WELLINGTON MANAGEMENT GROUP LLP | CLEAN HARBORS INC | 6,760,449 | 12.4% | EDGAR |
| SC 13G/A | 2022-02-01 | BlackRock Inc. | CLEAN HARBORS INC | 4,191,147 | 7.7% | EDGAR |
| SC 13G/A | 2021-02-16 | ArrowMark Colorado Holdings LLC | CLEAN HARBORS INC | 2,338,706 | 4.2% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | CLEAN HARBORS INC | 4,490,624 | 8.1% | EDGAR |
| SC 13G/A | 2021-02-04 | WELLINGTON MANAGEMENT GROUP LLP | CLEAN HARBORS INC | 6,809,828 | 12.3% | EDGAR |
| SC 13G/A | 2021-01-29 | BlackRock Inc. | CLEAN HARBORS INC | 4,186,752 | 7.6% | EDGAR |
| SC 13G/A | 2020-02-14 | ArrowMark Colorado Holdings LLC | CLEAN HARBORS INC | 3,022,502 | 5.4% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | CLEAN HARBORS INC | 4,597,376 | 8.2% | EDGAR |
| SC 13G/A | 2020-02-05 | BlackRock Inc. | CLEAN HARBORS INC | 4,680,771 | 8.4% | EDGAR |
| SC 13G/A | 2020-01-28 | WELLINGTON MANAGEMENT GROUP LLP | CLEAN HARBORS INC | 6,884,295 | 12.3% | EDGAR |
| SC 13G | 2019-02-14 | ArrowMark Colorado Holdings LLC | CLEAN HARBORS INC | 3,087,587 | 5.5% | EDGAR |
| SC 13G | 2019-02-14 | SOUTHERNSUN ASSET MANAGEMENT, LLC | CLEAN HARBORS INC | 1,454,540 | 2.6% | EDGAR |