Clean Harbors Inc (CLH)
Clean Harbors, Inc. provides environmental and industrial services in the United States and Canada. The company operates through two segments: Environmental Services and Safety-Kleen Sustainability Solutions. The Environmental Services segment collects, transports, treats, recycles, and disposes hazardous and non-hazardous waste, such as resource recovery, physical treatment, incineration, landfill disposal, wastewater treatment, lab chemicals disposal, and explosives management services; and offers CleanPack services, including collection, identification, categorization, specialized packaging, transportation, and disposal of laboratory chemicals and household hazardous waste. This segment also provides industrial maintenance and specialty industrial services; and utilizes specialty equipment and resources that perform field services. The Safety-Kleen Sustainability Solutions segment provides containerized waste, parts-washer, and vacuum services for automobile repair shops, car and truck dealers, metal fabricators, machine manufacturers, fleet maintenance shops, and other automotive, industrial, and retail customers; collects and transports for hazardous and non-hazardous containerized waste for recycling or disposal; machine cleaning and maintenance, and disposal and replenishment of clean solvent or aqueous fluids; and vacuum services to remove solids, residual oily water, and sludge and other fluids from customers' oil/water separators, sumps, and collection tanks, as well as removes and collects waste fluids found at large and small industrial locations, including metal fabricators, auto maintenance providers, and general manufacturers. This segment also manufactures, formulates, and packages lubricants and other products. Clean Harbors, Inc. was incorporated in 1980 and is headquartered in Norwell, Massachusetts.
- Ticker
- CLH
- Exchange
- NYSE
- Sector
- Industrials
- Industry
- Waste Management
- Market cap
- $14.98B
- 52-week range
- $201.34 - $335.94
Valuation
- Share price
- $284.10 (close of Nov 6, 2026)
- P/E (TTM)
- 28.41x
- Price to book
- 4.81x
- Price to free cash flow
- 29.93x
- Enterprise value
- $17.71B
- Book value per share
- $59.12
Price performance
| Period | Change |
|---|---|
| 1 day | +2.30% |
| 5 days | -5.96% |
| 1 month | -10.68% |
| 3 months | -7.65% |
| 6 months | -1.35% |
| Year to date | +21.16% |
| 1 year | +38.50% |
| 3 years | +84.01% |
| 5 years | +167.77% |
| 10 years | +545.39% |
| All time | +6,213.33% |
Short interest
- As of
- Oct 15, 2026
- Short % of float
- 2.38%
- Shares short
- 1.19M
- Days to cover
- 3.09
- Change since prior report
- +10.29%
- Source
- FINRA consolidated short interest
Members of Congress who disclosed CLH trades
April McClain Delaney · Robert Bresnahan
Super investors holding CLH
Henry Ellenbogen (Durable Capital Partners LP) · Ken Griffin (Citadel) · First Eagle Investment (First Eagle Investment Management, LLC)
Profitability and growth
- Return on equity
- 14.24%
- Return on invested capital
- 9.28%
- Return on assets
- 5.13%
- Return on capital employed
- 10.38%
- Gross margin
- 31.28%
- Net margin
- 6.48%
- EBITDA margin
- 18.56%
- Revenue growth
- 2.39%
- Net income growth
- -2.82%
- Free cash flow growth
- 27.86%
Cash flow and balance sheet
- Free cash flow yield (TTM)
- 3.34%
- Current ratio
- 1.95x
- Net debt to EBITDA
- 2.02x
Latest reported year
- Period end
- Dec 31, 2025
- Fiscal year
- 2025
- Revenue
- $6.03B
- Cost of revenue
- $4.14B
- Gross profit
- $1.89B
- EBITDA
- $1.12B
- Net income
- $390.97M
- Earnings per share
- $7.31
- Interest expense
- $143.10M
- Shares outstanding
- 53.51M
Income statement by year
| Period end | Revenue | Gross profit | Net income | EPS |
|---|---|---|---|---|
| 2025-12-31 | $6.03B | $1.89B | $390.97M | $7.31 |
| 2024-12-31 | $5.89B | $1.82B | $402.30M | $7.46 |
| 2023-12-31 | $5.41B | $1.66B | $377.86M | $6.99 |
| 2022-12-31 | $5.17B | $1.62B | $411.74M | $7.59 |
| 2021-12-31 | $3.81B | $1.20B | $203.25M | $3.73 |
| 2020-12-31 | $3.14B | $1.01B | $134.84M | $2.43 |
| 2019-12-31 | $3.41B | $1.02B | $97.74M | $1.75 |
| 2018-12-31 | $3.30B | $994.75M | $65.64M | $1.17 |
| 2017-12-31 | $2.94B | $882.30M | $100.74M | $1.77 |
| 2016-12-31 | $2.76B | $822.37M | -$39.87M | -$0.69 |
Margins and returns by year
| Period end | Gross margin | Net margin | Return on equity | Return on capital |
|---|---|---|---|---|
| 2025-12-31 | 31.28% | 6.48% | 14.24% | 9.28% |
| 2024-12-31 | 30.97% | 6.83% | 15.63% | 9.60% |
| 2023-12-31 | 30.74% | 6.99% | 16.81% | 10.28% |
| 2022-12-31 | 31.41% | 7.97% | 21.42% | 11.26% |
| 2021-12-31 | 31.42% | 5.34% | 13.43% | 6.55% |
| 2020-12-31 | 32.01% | 4.29% | 10.05% | 6.80% |
| 2019-12-31 | 30.02% | 2.86% | 7.70% | 5.91% |
| 2018-12-31 | 30.14% | 1.99% | 5.61% | 5.61% |
| 2017-12-31 | 29.96% | 3.42% | 8.48% | 4.53% |
| 2016-12-31 | 29.85% | -1.45% | -3.68% | 1.27% |
Cash and debt by year
| Period end | Cash | Debt |
|---|---|---|
| 2025-12-31 | $826.32M | $2.76B |
| 2024-12-31 | $687.19M | $2.77B |
| 2023-12-31 | $444.70M | $2.29B |
| 2022-12-31 | $492.60M | $2.41B |
| 2021-12-31 | $452.57M | $2.52B |
| 2020-12-31 | $519.10M | $1.55B |
| 2019-12-31 | $371.99M | $1.55B |
| 2018-12-31 | $226.51M | $1.57B |
| 2017-12-31 | $319.40M | $1.63B |
| 2016-12-31 | $307.00M | $1.63B |
Free cash flow by year
| Period end | Free cash flow | Stock-based compensation |
|---|---|---|
| 2025-12-31 | $441.81M | $32.70M |
| 2024-12-31 | $345.53M | $27.98M |
| 2023-12-31 | $312.25M | $20.70M |
| 2022-12-31 | $281.16M | $26.84M |
| 2021-12-31 | $304.14M | $18.84M |
| 2020-12-31 | $234.34M | $18.50M |
| 2019-12-31 | $196.87M | $17.82M |
| 2018-12-31 | $179.87M | $16.79M |
| 2017-12-31 | $118.69M | $13.15M |
| 2016-12-31 | $40.24M | $10.48M |
Investor relations
Past earnings dates
| Reported | Fiscal period | EPS estimate |
|---|---|---|
| 2026-10-28 | Sep 2026 | $3.18 |
| 2026-07-29 | Jun 2026 | $2.74 |
| 2026-05-06 | Mar 2026 | $1.15 |
| 2026-02-18 | Dec 2025 | $1.59 |
| 2025-10-29 | Sep 2025 | $2.37 |
| 2025-07-30 | Jun 2025 | $2.33 |
| 2025-04-30 | Mar 2025 | $1.02 |
| 2025-02-19 | Dec 2024 | $1.34 |
Filings and sources
- Company website
- cleanharbors.com
- SEC filings
- 10-K, 10-Q and 8-K on EDGAR
- Earnings calendar
- All upcoming reports
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Understanding these figures
Price-to-earnings ratio · Short interest · Discounted cash flow · Free cash flow · Earnings per share · Return on equity · Gross margin vs net margin · Reading a balance sheet · Debt and leverage · Dividend yield · Insider transactions and Form 4 · How to read a stock chart
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