Clean Harbors (CLH) Proxy filing summary

Voting matters and shareholder proposals

• Four Class I directors are nominated for election to serve until the 2029 annual meeting.

• Advisory approval of named executive officer compensation is up for a non-binding vote.

• Ratification of Deloitte & Touche LLP as independent auditor for the fiscal year ending December 31, 2026 is proposed.

• Additional business may be addressed if properly brought before the meeting.

Board of directors and corporate governance

• Board recommends voting in favor of all director nominees and proposals.

• Four nominees for Class I director positions are identified by name.

Executive compensation and say-on-pay

• Shareholders are asked to approve, on an advisory basis, the compensation of named executive officers.