---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-25-000023"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2025-05-21T23:59:59+00:00"
generated_at: "2026-05-20T23:19:58.062187+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors shareholders elect all five Class III directors; approve say-on-pay and auditor ratification

## Summary
- All five director nominees elected with >46M votes for each; broker non-votes of 2,113,318.
- Say-on-pay approved with 45,553,330 for, 2,041,241 against, 39,284 abstain.
- Ratification of Deloitte as auditor for FY2025 passed with 48,547,564 for, 1,171,726 against.
- Quorum of 49,747,173 shares present or represented out of 54,202,256 outstanding.

## SEC filing metadata
- accession: 0000822818-25-000023
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2025-05-21T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281825000023/0000822818-25-000023-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281825000023/clh-20250521.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-25-000023
- JSON: https://secwatch.observer/filing/0000822818-25-000023.json
- Plain text: https://secwatch.observer/filing/0000822818-25-000023.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.