---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-25-000017"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2025-04-30T23:59:59+00:00"
generated_at: "2026-05-23T03:06:41.638991+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors Q1 revenue up 4% to $1.43B; EPS $1.09; reaffirms FY guidance

## Summary
- Revenue $1.43B (+4% YoY); net income $58.7M ($1.09 diluted EPS) vs $69.8M ($1.29) in Q1 2024.
- Adjusted EBITDA $234.9M vs $230.1M; margin 16.4% vs 16.7%.
- ES segment revenue +3%; Field Services +32% on HEPACO acquisition; incineration utilization 88% vs 79%.
- SKSS revenue +9% on higher volumes and CFO pricing; softer commodity prices offset.
- Reiterates FY2025 adj. EBITDA $1.15-1.21B; adj. FCF $430-490M; Q2 adj. EBITDA growth 1-3%.

## SEC filing metadata
- accession: 0000822818-25-000017
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2025-04-30T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281825000017/0000822818-25-000017-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281825000017/clh-20250430.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-25-000017
- JSON: https://secwatch.observer/filing/0000822818-25-000017.json
- Plain text: https://secwatch.observer/filing/0000822818-25-000017.txt

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