Company: CLH
Filing Date: 2025-04-11
Form Type: DEF 14A
Source: 0000822818-25-000011
Chunk: 9

Company: CLEAN HARBORS INC
Filing Date: 2025-04-11
Form: DEF 14A
Chunk 9
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 shareholder: Edward G. Galante, Karyn Polito, John T. Preston, Alison A. Quirk, Marcy L. Reed, Andrea Robertson, Lauren C. States, Shelley Stewart, Jr., John R. Welch, and Robert J. Willett. Accordingly, the Board has determined that 10 out of the total of 13 current directors are independent.

The Board has also determined that, to the extent the Company has had during the past three years any commercial relationships with any of the entities with which any of the independent directors are affiliated, those relationships fall below the categorical standards for commercial relationships, were established in the ordinary course of business on an arms-length basis, and are not material to the Company or those individuals or entities. The Board has determined that Alan S. McKim, Michael L. Battles, and Eric W. Gerstenberg are not independent because each is an employee of the Company.

#### Limitation on Other Board Services
The Board believes that its members should not be prohibited from serving on boards or committees of other organizations, provided there is no actual or apparent conflict of interest between Clean Harbors and such other organizations and provided the member’s service with such other organizations will not unduly impinge upon his/her commitment to Clean

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Harbors. The Board has, however, developed a guideline regarding the number of public company boards on which a director may serve. The number of public company boards on which a director may serve, including the Board, is limited to (i) four (4) boards of directors, if such director is not also a public company chief executive officer, and (ii) two (2) boards of directors in addition to their employer’s board, if such director also serves as a chief executive officer or in an equivalent position of a public company. In addition, the Co-CEOs of the Company, both of whom now serve on the Board, are each limited to serving on one (1) outside public company board of directors, with the approval of the Board. The Corporate Governance and Sustainability Committee takes into account the nature of and time involved in a director’s service on other boards and committees in evaluating the suitability of that person to serve as a director of Clean Harbors. Any director is expected to offer his or her resignation from the Board in the event of a material change in the principal job responsibilities held at the time of his or her election to the Board. The Corporate Governance and Sustainability Committee shall determine whether to