---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-21-000047"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2021-10-12T23:59:59+00:00"
generated_at: "2026-06-28T21:39:56.833962+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors completes HydroChemPSC acquisition for $1.25B; funds with $1.0B term loan

## Summary
- Acquired HydroChemPSC from Littlejohn & Co. affiliate for approximately $1.25 billion in all-cash, subject to customary adjustments.
- Financed with $1.0 billion incremental term loans (2021 Incremental Term Loans) maturing October 8, 2028.
- Term loan bears interest at Eurodollar+2.00% (0% floor) or Base+1.00% (1% floor); 1% prepayment premium if repriced before May 2022.
- HydroChemPSC is a leading U.S. provider of industrial cleaning, specialty maintenance, and utilities services.

## SEC filing metadata
- accession: 0000822818-21-000047
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2021-10-12T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 2.01, 2.03, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281821000047/0000822818-21-000047-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281821000047/clh-20211008.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-21-000047
- JSON: https://secwatch.observer/filing/0000822818-21-000047.json
- Plain text: https://secwatch.observer/filing/0000822818-21-000047.txt

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