Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 71

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 71
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              |     |                  |           |     |    |     |         |     |   |
| Wellington Management Group LLP |     |                  | 3,654,929 |     | -3 |     |         | 6.7 | % |
| 280 Congress Street             |     |                  |           |     |    |     |         |     |   |
| Boston, MA 02210                |     |                  |           |     |    |     |         |     |   |

_________________________

(1) Based solely on a review of the Schedule 13G/A filed with the SEC on February 13, 2024. As reported on that Schedule 13G/A, as of December 29, 2023, The Vanguard Group beneficially owned, in the aggregate 4,779,072 shares of common stock, of which such entity held shared voting power as to 17,775 shares, sole dispositive power as to 4,706,995 shares, and shared dispositive power as to 72,077 shares.

(2) Based solely on a review of the Schedule 13G/A filed with the SEC on January 25, 2024. As reported on that Schedule 13G/A, as of December 31, 2023, BlackRock, Inc. beneficially owned, in the aggregate, 4,393,473 shares of common stock, of which such entity held sole voting power as to 4,198,502 shares and sole dispositive power as to 4,393,473 shares.

(3) Based solely on a review of Schedule 13G/A filed with the SEC on February 8, 2024. As reported on that Schedule 13G/A, as of December 29, 2023, Wellington Management Group LLP, Wellington Group Holdings LLP and Wellington Investment Advisors Holding LLP beneficially owned, in the aggregate, 3,654,929 shares of common stock, of which such entities held shared voting power as to 2,944,758 shares and shared dispositive power as to 3,654,929 shares. Wellington Investment Advisors Holdings LLP is owned by Wellington Group Holdings LLP, and Wellington Group Holdings LLP is owned by Wellington Management Group LLP.

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### SHAREHOLDER PROPOSALS
Proposals which qualified shareholders intend to present at the 2026 Annual Meeting and request be included in the Company’s proxy statement for that meeting in accordance with Rule