Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 58

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 58
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  3,380,757 |     |                     | 1,458,397 |     |    |  3,380,757 |
| Other Compensation(5)           |     |                                                                      |    25,841 |     |                                                                   |     25,841 |     |                     |         — |     |    |          — |

(1) Assumes that restricted stock awards are assumed in connection with a Change of Control.

(2) Base salary payments are made over a one year period (two years for the Co-CEOs) in accordance with the Key Employee Retention Plan and/or severance agreements, provided, however, that base salary payments are made to the Co-CEOs in the event of an involuntary termination with a Change of Control are payable in a lump sum. Mr. McKim is not a participant in the Key Employee Retention Plan.

(3) The MIP Bonus payment is calculated based on the level of achievement of the relevant performance criteria for 2024 as determined by the C&HC Committee on March 7, 2024 and is payable in a lump sum. For Mr. Battles and Mr. Gerstenberg, the severance agreements also provide for the a bonus payment in the amount of the average of the last two cash bonuses the executive received.

(4) Assumes restricted stock awards are assumed in connection with the Change of Control and assumes target level for any unearned performance-based awards. Upon death or Disability, the 2020 Stock Plan accelerates vesting for earned performance-based awards only.

(5) Other compensation represents continued medical, dental, vision and life insurance benefits which were provided to the employee at termination in accordance with the Key Employee Retention Plan or applicable severance agreement. Amounts are estimated based upon 2024 benefit costs (24 months for Mr. Battles and Mr. Gerstenberg and 12 months for Mr. Dugas, Mr. Diderich and Ms. Gabriel) and were annualized for Mr. Diderich as he began employment with the Company on May 20, 2024.

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#### CEO Pay Ratio Information
The SEC requires disclosure of the relationship between the annual total compensation of our Chief Executive Officer (“CEO”) and our median employee. For 2024, the average annual total compensation of our Co-CEOs was $5,284,445. The annual total compensation of the median employee identified was $83,761, resulting in a CEO pay ratio of