---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-24-000023"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2024-05-23T23:59:59+00:00"
generated_at: "2026-06-01T09:29:01.931060+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors shareholders approve ESPP, reelect directors at 2024 annual meeting

## Summary
- ESPP approved: 500K shares reserved, employees buy at 10% discount (90% of lower of start/end FMV).
- All four Class II director nominees elected: McKim (46.2M for), Polito (47.4M), Preston (44.0M), Reed (47.2M).
- Advisory say-on-pay passed: 45.9M for, 2.3M against, 30.6K abstain.
- Ratification of Deloitte & Touche as auditor passed: 49.5M for, 512K against.
- ESPP effective upon shareholder approval; offering periods and purchase dates to be set by Committee.

## SEC filing metadata
- accession: 0000822818-24-000023
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2024-05-23T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281824000023/0000822818-24-000023-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281824000023/clh-20240522.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-24-000023
- JSON: https://secwatch.observer/filing/0000822818-24-000023.json
- Plain text: https://secwatch.observer/filing/0000822818-24-000023.txt

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