---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-26-000031"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2026-07-29T12:07:44+00:00"
generated_at: "2026-07-29T12:10:11.582603+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors Q2 revenue up 12% to $1.74B; raises FY2026 guidance; acquires ES&H for $305M

## Summary
- Q2 revenue $1.74B (+12% YoY), net income $170.5M (+34%), EPS $3.22, Adjusted EBITDA $409M (+22%).
- Environmental Services segment margin 27.9%; incineration utilization 91% vs 86% a year ago.
- Awarded ten-year disposal contract valued at $600M with a customer expanding U.S. manufacturing.
- Agreed to acquire ES&H for $305M cash; expected close H2 2026; ES&H annual revenue ~$90M, EBITDA ~$30M.
- Raised FY2026 Adjusted EBITDA guidance midpoint to $1.38B (range $1.35B-$1.41B); adjusted FCF guidance $520M-$580M.

## SEC filing metadata
- accession: 0000822818-26-000031
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2026-07-29T12:07:44+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281826000031/0000822818-26-000031-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281826000031/clh-20260729.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-26-000031
- JSON: https://secwatch.observer/filing/0000822818-26-000031.json
- Plain text: https://secwatch.observer/filing/0000822818-26-000031.txt

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