Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 36

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 36
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 As noted earlier, potential compensation for executive officers currently consists of three basic elements: base salary, performance-based cash bonuses, and awards of long-term equity incentives through restricted shares.

#### Use of Compensation Consultants
Under its charter, the C&HC Committee has authority to select and retain its own executive compensation consultants, legal counsel, and other advisors to assist the C&HC Committee in its determinations. The C&HC Committee has engaged an outside compensation consultant to assist the C&HC Committee in applying its compensation philosophy for our executive officers, analyzing current compensation conditions in the marketplace generally and among our peers specifically, and assessing the competitiveness and appropriateness of compensation levels for our executive officers. The C&HC Committee retained Meridian Compensation Partners, LLC (“Meridian”) as its independent compensation consultant in early 2024, a role which Meridian began in early 2022. Representatives of Meridian regularly attend C&HC Committee meetings, both with and without members of management present, and interact with members of our human resources department with respect to its assessment of the compensation for our executive officers.

The C&HC Committee has also engaged Meridian to provide input to the Corporate Governance and Sustainability Committee regarding compensation for non-employee directors. The Corporate Governance and Sustainability Committee then recommends any changes in the compensation and benefits for non-employee directors to the full Board for its consideration and approval.

The C&HC Committee considered the services provided by Meridian, as well as informational responses provided by Meridian to the C&HC Committee on topics relevant to assessing Meridian's relationship with Clean Harbors and our management team, and determined that such services do not compromise Meridian's independence as the C&HC Committee's independent compensation consultant.

Use of Market Data and Competitive Compensation Positioning

Our executive compensation program takes into account the compensation practices of companies with which we compete or could compete for executive talent. For compensation decisions made related to 2024, the relevant peer group as selected by the C&HC Committee, in consultation with Meridian, included the following companies, after consideration of a

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number of financial, industry and qualitative factors, including overall business model comparability, operating size, valuation, margins, growth, and shareholder returns:

| ABM Industries Incorporated |     | Healthcare Services Group, Inc. |     | Rollins, Inc                 |
| Advanced Drainage, Inc.     |     | Heritage Crystal Clean          |     | Stanley Black & Decker, Inc. |
| Chemed Corporation