---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-25-000034"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2025-09-26T23:59:59+00:00"
generated_at: "2026-05-17T05:38:03.802830+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors prices $745M senior notes at 5.750% due 2033 for refinancing

## Summary
- Offering reduced from $845M to $745M; $100M shift to new secured term loan facility.
- Notes carry 5.750% interest, mature 2033, priced at 100% of par.
- Proceeds with $1.26B new term loan to repay $1.457B existing term loans and redeem $545M 4.875% senior notes due 2027.
- Closing expected on or about October 9, 2025, subject to customary conditions.
- Note offering is not contingent on entering the new term loan credit facility.

## SEC filing metadata
- accession: 0000822818-25-000034
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2025-09-26T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281825000034/0000822818-25-000034-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281825000034/clh-20250925.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-25-000034
- JSON: https://secwatch.observer/filing/0000822818-25-000034.json
- Plain text: https://secwatch.observer/filing/0000822818-25-000034.txt

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