---
schema_version: "secwatch.filing_event.v1"
accession: "0000822818-24-000019"
form_type: "8-K"
ticker: "CLH"
cik: "0000822818"
company_name: "CLEAN HARBORS INC"
filed_at: "2024-05-01T23:59:59+00:00"
generated_at: "2026-06-03T03:34:53.075633+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Clean Harbors Q1 revenue up 5% to $1.38B, Adj. EBITDA record $230M, raises FY2024 guidance

## Summary
- Revenue $1.38B (+5% YoY); net income $69.8M ($1.29 EPS); adjusted EPS $1.29.
- Adjusted EBITDA $230.1M (+7% YoY, record Q1); margin 16.7% (up 20 bps).
- Environmental Services revenue +10%, led by Technical Services +11%; incineration pricing +6%.
- Full-year 2024 Adj. EBITDA guidance raised to $1.10-$1.15B midpoint +11% YoY; FCF maintained $340-$400M.
- HEPACO acquisition closed; Kimball incinerator near commercial launch; Castrol partnership for MoreCircular program.

## SEC filing metadata
- accession: 0000822818-24-000019
- form_type: 8-K
- ticker: CLH
- cik: 0000822818
- company_name: CLEAN HARBORS INC
- filed_at: 2024-05-01T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/822818/000082281824000019/0000822818-24-000019-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/822818/000082281824000019/clh-20240501.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000822818-24-000019
- JSON: https://secwatch.observer/filing/0000822818-24-000019.json
- Plain text: https://secwatch.observer/filing/0000822818-24-000019.txt

## Key facts
- Earnings Releases
  CLEAN HARBORS INC reported the first quarter ended March 31, 2024 results: revenue $1.38 billion, net income $69.8 million, EPS $1.29 per diluted share. Guidance raised.
  - Period: the first quarter ended March 31, 2024
  - Revenue: $1.38 billion
  - Net income: $69.8 million
  - EPS: $1.29 per diluted share
  - Guidance: raised
  - Result: reported results
  source text: with this report as Exhibit 99.1. --- EX-99.1 (EX-99.1) --- Press Release Clean Harbors Announces First-Quarter 2024 Financial Results • Posts 5% Q1 Revenue Increase to $1.38 Billion, Led by 10% Growth in Environmental Services • Generates Q1 Net Income of $69.8 Million, or EPS of $1.29 • Achieves 7% Growth in Q1 Adjusted EBITDA to $230.1 Million with Margin
  evidence_url: https://www.sec.gov/Archives/edgar/data/822818/000082281824000019/0000822818-24-000019-index.htm

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