Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 38

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 38
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2) Mr. Dugas’ base salary was $324,000 from January 1, 2023 through March 31, 2023 at which time his salary increased to $425,000 in connection with his appointment as Chief Financial Officer.

(3) Mr. Diderich joined the Company on May 20, 2024.

(4) Mr. McKim’s annual base salary was decreased on March 31, 2023 in connection with his transition from President and Chief Executive Officer to Executive Chairman and Chief Technology Officer.

(5) Ms. Gabriel’s annual base salary was increased on January 1, 2024 as part of a market adjustment.

#### Performance-Based Cash Bonuses
The C&HC Committee is authorized to grant cash bonuses to the NEOs under the MIP, which was approved by shareholders and became effective on January 1, 2022. Cash bonuses for NEOs under the MIP are earned based on the achievement of performance goals established by the C&HC Committee in two components, an annual cash bonus aligned with Company performance goals (“Annual MIP Bonus”) and, for all of the NEOs other than the Co-CEOs and Mr. McKim, an annual cash bonus aligned with specific individualized performance goals (known as the Supplemental Executive

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Incentive Plan or “SEIP”). Each NEO has an annual incentive target that is expressed as a percentage of the NEO’s base salary, as shown for 2024 in the table below:

| Name                |     | Annual MIP % |     | SEIP % |     | Combined % |
| Michael L. Battles  |     | 150%         |     | —      |     | 150%       |
| Eric W. Gerstenberg |     | 150%         |     | —      |     | 150%       |
| Eric J. Dugas       |     | 50%          |     | 80%    |     | 130%       |
| Jeroen Diderich     |     | 50%          |     | 80%    |     | 130%       |
| Alan S. McKim       |     | 150%         |     | —      |     | 150%       |
| Sharon M. Gabriel   |     | 50%          |     | 80%    |     | 130%       |

Annual MIP Bonus

For the Annual