Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 21

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 21
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 | 269,656 |

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(1) The grant date fair value of stock awards is calculated in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 718. For restricted stock awards subject to time-based vesting, the grant date fair value is based on the value of the awards on the grant date using the closing price of the Company’s common stock on such date. As of December 31, 2024, each non-employee director serving as of that date, held 836 unvested restricted shares.

(2) None of the non-employee directors was granted any stock options during 2024, nor do they currently hold any stock options.

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### EXECUTIVE OFFICERS
As of March 31, 2025, the Company’s executive officers and their respective ages are as follows:

| Name                |     | Age |     | Position                                                               |
| Michael L. Battles  |     |  56 |     | Co-Chief Executive Officer and Co-President                            |
| Eric W. Gerstenberg |     |  56 |     | Co-Chief Executive Officer and Co-President                            |
| Alan S. McKim       |     |  70 |     | Founder, Executive Chairman of the Board, and Chief Technology Officer |
| Eric J. Dugas       |     |  47 |     | Executive Vice President and Chief Financial Officer                   |
| George L. Curtis    |     |  66 |     | Executive Vice President, Pricing & Proposals*                         |
| Jeroen Diderich     |     |  57 |     | President of Environmental Sales & Service                             |
| Sharon M. Gabriel   |     |  49 |     | Executive Vice President and Chief Information Officer*                |
| Robert Harrison     |     |  54 |     | Executive Vice President, Health & Safety*                             |
| Robert E. Speights  |     |  55 |     | President, Industrial Services*                                        |
| Rebecca Underwood   |     |  51 |     | President, Facilities*                                                 |
| Brian P. Weber      |     |  57 |     | President, Safety-Kleen Sustainability Solutions                       |

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* Officer of a wholly-owned subsidiary of the parent holding company, Clean Harbors, Inc.

Michael L. Battles was appointed as the Company’s Co-Chief Executive Officer and Co-President,