CLH on NYSE

Clean Harbors

Logo: Clean Harbors, CC BY 3.0, via Wikimedia Commons5

American environmental company

Clean Harbors, Inc., headquartered in Norwell, Massachusetts, is a provider of waste management and industrial services for commercial customers, specializing in the collection, transportation, treatment and disposal of hazardous waste, but also offering services for non-hazardous waste.3 It was founded by Alan McKim.1 Its shares trade on NYSE under the symbol CLH.1 Wikipedia text CC BY-SA 4.0

Price unavailable

Last updated Oct 21, 2026.

Overview

1980Founded1

Compare with Stericycle, Perma-Fix Environmental Services or Li-Cycle Holdings Corp., or pick any stock.

  • TickerCLH on NYSE1
  • Industrywaste management1
  • HeadquartersNorwell1
  • Websitewww.cleanharbors.com
  • Incorporated inMA6
  • Business address42 Longwater Drive, P.O. Box 9149, Norwell, Ma 02061-91496
  • Filer categoryLarge accelerated filer6
  • Legal formDomestic Business Corporation4
  • LEI5493000SJVZVZJKHJF484
  • StatusActive4
  • LEI statusIssued and current4
  • Registered addressC/O CT CORPORATION SYSTEM, 02110 Boston, United States4
  • Registered withCorporations Division (Secretary of the Commonwealth's Office), 0429977804

Clean Harbors, Inc., headquartered in Norwell, Massachusetts, is a provider of waste management and industrial services for commercial customers, specializing in the collection, transportation, treatment and disposal of hazardous waste, but also offering services for non-hazardous waste. The company has 870 operating locations in 630 properties in the U.S. and Canada including a network of over 100 waste disposal facilities such as incinerators, landfills (seven hazardous waste landfills and two non-hazardous waste landfills), treatment, storage and disposal facilities. It also owns Safety-Kleen, the largest re-refiner and recycler of used oil in North America. In 2024, the company received 91% of its revenues in the United States and 9% of its revenues in Canada. In 2024, the company's revenues primarily came from the following industries: chemical industry (15%), manufacturing (14%), refineries (13%), automotive industry (8%), utilities (6%), base and blended oils (5%), oil and gas industry (5%), transportation (4%), government (4%) and retail (3%).3

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

11.2%Operating margin9
6.5%Net margin9
2.4%Revenue growth, 20259
14.2%Return on equity9
1.01×Debt to equity9
$441.8MFree cash flow9

What sells

Revenue by product, business segment and region, as the company reports it to the SEC.

Products and services

Technical Services brought in 31% of the revenue Clean Harbors broke down this way in fiscal 2025.

  1. Technical Services$1.9B931%up 7% from 2024
  2. Industrial Services And Other$1.3B922%down 4% from 2024
  3. Safetly-Kleen Environmental Services$1.3B922%up 11% from 2024
  4. Field and Emergency Response$937.4M916%up 5% from 2024
  5. Safety-Kleen Oil$593.9M910%down 15% from 2024
Products and services by year
Products and services202320242025
Technical Services$1.6B$1.7B$1.9B
Industrial Services And Other$1.4B$1.4B$1.3B
Safetly-Kleen Environmental Services$1.1B$1.2B$1.3B
Field and Emergency Response$609.9M$895.1M$937.4M
Safety-Kleen Oil$714.0M$699.5M$593.9M

Business segments

Reportable Segments brought in 50% of the revenue Clean Harbors broke down this way in fiscal 2025.

  1. Reportable Segments$6.0B950%up 2% from 2024
  2. Environmental Services$5.1B943%up 4% from 2024
  3. Safety-Kleen Sustainability Solutions$837.4M97%down 5% from 2024
Business segments by year
Business segments202320242025
Reportable Segments$5.4B$5.9B$6.0B
Environmental Services$4.5B$5.0B$5.1B
Safety-Kleen Sustainability Solutions$897.3M$884.8M$837.4M

Regions

United States brought in 91% of the revenue Clean Harbors broke down this way in fiscal 2025.

  1. United States$5.5B991%up 3% from 2024
  2. Canada$540.0M99%up 0% from 2024
Regions by year
Regions202320242025
United States$4.9B$5.4B$5.5B
Canada$540.0M$537.5M$540.0M

Where the money goes

Where each dollar of revenue went, fiscal 2025

  • Cost of revenue69¢$4.1B
  • Selling, general and admin12¢$752.5M
  • Other costs10¢$605.7M
  • Income tax2¢$137.0M
  • Profit6¢$391.0M

Out of $6.0B in revenue.9

Where each dollar of operating cash went, fiscal 2025

  • Capital spending49¢$424.9M
  • Share buybacks29¢$250.0M
  • Kept or used elsewhere22¢$191.8M

Out of $866.7M of cash from operations.9

Financial statements

Revenue101112139$6.0B in 2025+77% since 2019
0$2.0B$4.0B$6.0B$8.0B2019: $3.4B$3.4B20192020: $3.1B$3.1B2020−8%2021: $3.8B$3.8B2021+21%2022: $5.2B$5.2B2022+36%2023: $5.4B$5.4B2023+5%2024: $5.9B$5.9B2024+9%2025: $6.0B$6.0B2025+2%
Operating income101112139$673.4M in 2025+193% since 2019
0$200.0M$400.0M$600.0M$800.0M2019: $229.5M$229.5M20192020: $251.3M$251.3M2020+10%2021: $347.9M$347.9M2021+38%2022: $634.7M$634.7M2022+82%2023: $612.4M$612.4M2023−4%2024: $670.2M$670.2M2024+9%2025: $673.4M$673.4M2025+0%
Net income101112139$391.0M in 2025+300% since 2019
0$200.0M$400.0M$600.0M2019: $97.7M$97.7M20192020: $134.8M$134.8M2020+38%2021: $203.2M$203.2M2021+51%2022: $411.7M$411.7M2022+103%2023: $377.9M$377.9M2023−8%2024: $402.3M$402.3M2024+6%2025: $391.0M$391.0M2025−3%

Every line of the income statement as filed: the last 3 fiscal years, latest first.9

Period ending2025-12-312024-12-312023-12-31
Total revenues$6.0B$5.9B$5.4B
Total cost of revenues$4.1B$4.1B$3.7B
Selling, general and administrative expenses$752.5M$739.6M$671.2M
Accretion of environmental liabilities$14.3M$13.5M$13.7M
Depreciation and amortization$446.0M$400.9M$365.8M
Income from operations$673.4M$670.2M$612.4M
Other income (expense), net$5.2M-$1.5M$2.3M
Loss on early extinguishment of debt-$8.3M-$371.0K-$2.9M
Gain on sale of businesses$776.0K$0$0
Interest expense, net of interest income of $25,749, $19,437 and $11,930, respectively-$143.1M-$135.0M-$108.6M
Income before provision for income taxes$528.0M$533.4M$503.3M
Provision for income taxes$137.0M$131.1M$125.4M
Net income$391.0M$402.3M$377.9M
Basic (in dollars per share)$7.31$7.46$6.99
Diluted (in dollars per share)$7.28$7.42$6.95
Shares used to compute earnings per share Basic (in shares)53.5M shares53.9M shares54.1M shares
Shares used to compute earnings per share Diluted (in shares)53.7M shares54.2M shares54.4M shares
Interest income$25.7M$19.4M$11.9M

Compare Clean Harbors with another company

Corporate structure

Clean Harbors sits at the top of its group. 130 entities, 4 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of Clean Harbors

  • FMR LLC Filed SCHEDULE 13G on Clean Harbors, latest Aug 6, 2026
  • D1 Capital Partners L.P. Filed SCHEDULE 13G/A on Clean Harbors, latest May 15, 2026 (2 filings since Feb 17, 2026)
  • Wellington Management Company Filed SCHEDULE 13G/A on Clean Harbors, latest May 15, 2026 (7 filings since Feb 4, 2022)
  • VANGUARD GROUP INC Filed SCHEDULE 13G/A on Clean Harbors, latest Mar 26, 2026 (4 filings since Feb 9, 2022)
  • Select Equity Group, L.P. Filed SC 13G/A on Clean Harbors, latest Nov 14, 2024 (2 filings since Feb 14, 2024)
  • BlackRock Filed SC 13G/A on Clean Harbors, latest Jan 25, 2024 (3 filings since Feb 1, 2022)
  • Clean Harbors Norwell, Massachusetts, United States
    • Ace/Allwaste Environmental Services of Indiana, LLC Subsidiary · Illinois, United States
    • Altair Disposal Services, LLC Subsidiary · Delaware, United States
    • Aquilex Finance LLC Subsidiary · Delaware, United States
    • Aquilex Intermediate Corporate Holdings LLC Subsidiary · Delaware, United States
    • Aquilex Intermediate Holdings LLC Subsidiary · Delaware, United States
    • Aquilex LLC Subsidiary · Delaware, United States
    • Baton Rouge Disposal, LLC Subsidiary · Delaware, United States
    • Bridgeport Disposal, LLC Subsidiary · Delaware, United States
    • CARBER Holdings, Inc. Subsidiary · Delaware, United States
    • CB Canada Acquisition, Inc. Subsidiary · Ontario, Canada
    • CB Canada Holdings, Inc. Subsidiary · Ontario, Canada
    • CB US Holdings, Inc. Subsidiary · Delaware, United States
    • CH International Holdings, LLC Subsidiary · Delaware, United States
    • Clean Harbors Andover, LLC Subsidiary · Delaware, United States
    • Clean Harbors Aragonite, LLC Subsidiary · Delaware, United States
    • Clean Harbors Arizona, LLC Subsidiary · Delaware, United States
    • Clean Harbors Baton Rouge, LLC Subsidiary · Delaware, United States
    • Clean Harbors BDT, LLC Subsidiary · Delaware, United States
    • Clean Harbors Buttonwillow, LLC Subsidiary · Delaware, United States
    • Clean Harbors Canada, Inc. Subsidiary · New Brunswick, Canada
    • Clean Harbors Caribe, Inc. Subsidiary · Puerto Rico, United States
    • Clean Harbors Chattanooga, LLC Subsidiary · Delaware, United States
    • Clean Harbors Clive, LLC Subsidiary · Delaware, United States
    • Clean Harbors Coffeyville, LLC Subsidiary · Delaware, United States
    • Clean Harbors Colfax, LLC Subsidiary · Delaware, United States
    • and 104 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What Clean Harbors reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

ItemLatestA year beforeChange
Finance-lease assets$222.3M9 Dec 31, 2025$182.5M9 Dec 31, 2024+21.8%
Operating-lease assets (leased space)$255.1M9 Dec 31, 2025$250.9M9 Dec 31, 2024+1.7%

Investments

ItemLatestA year beforeChange
Marketable securities, current$127.4M9 Dec 31, 2025$102.6M9 Dec 31, 2024+24.1%

Intangibles and goodwill

ItemLatestA year beforeChange
Goodwill$1.5B9 Dec 31, 2025$1.5B9 Dec 31, 2024+0.1%
Intangible assets, net (excluding goodwill)$653.0M9 Dec 31, 2025$702.0M9 Dec 31, 2024−7.0%
Finite-lived intangibles, gross$1.0B9 Dec 31, 2025$1.0B9 Dec 31, 2024+0.6%
Accumulated amortization$482.6M9 Dec 31, 2025$427.1M9 Dec 31, 2024+13.0%
Finite-lived intangibles, net$533.1M9 Dec 31, 2025$582.5M9 Dec 31, 2024−8.5%

Inventory

ItemLatestA year beforeChange
Inventory, total$372.1M9 Dec 31, 2025$384.7M9 Dec 31, 2024−3.3%

Properties, in its own words

Our principal executive offices are in Norwell, Massachusetts. We own our primary executive office building in Massachusetts, which occupies 104,000 square feet. We also currently lease 59,300 square feet of additional office space in Norwell, Massachusetts, under arrangements that do not expire until 2042. We have regional administrative offices in Canada and India. Our properties are sufficient and suitable for our current needs.

We have approximately 860 operating locations sited across at approximately 620 properties or parcels covering all 50 U.S. states, eight Canadian provinces, Puerto Rico and Mexico. These operating locations include service centers, branches, satellite locations, active hazardous waste management properties and oil processing, blending and packaging facilities. Many of our properties offer multiple capabilities. The following sets forth certain information regarding our key properties as of December 31, 2025.

The rest of Item 2

Service Centers, Branches and Satellite Locations

We have approximately 580 service centers, branches and satellite locations, across approximately 450 properties or parcels throughout the United States and Canada. These serve as principal sales and service centers from which we provide our environmental, industrial and Safety-Kleen branch core services for our Environmental Services business, as well as oil collection and product sales locations for our Safety-Kleen Sustainability Solutions business.

Active Hazardous Waste Management Properties

Incinerator Facilities. We own and operate an integrated network of ten incinerators located at five incinerator facility locations. The complementary capabilities of these facilities allow us to manage waste across our network with a focus on waste-handling compliance, transportation efficiency and overall incinerator utilization. The network’s annual practical capacity is 631,721 tons.

Practical capacity reflects the production level at which our incinerators can operate efficiently and sustainably. It is not based on continuous 24-hour, seven-day operations but instead takes into account factors such as long-term customer demand, staffing levels, shift structures, holidays, scheduled maintenance and mix of the waste processed. Utilization is calculated by dividing actual production tons by practical capacity at each incinerator.

For the year ended December 31, 2025, total utilization was 85.0%. Excluding the new incinerator at Kimball, Nebraska, which is still ramping up, utilization across the remaining incinerators was 89% for the full year. The Kimball incinerator, which commenced operations in late 2024, is not expected to reach full utilization until the end of 2026.

Our incinerators offer a wide range of technological capabilities to customers through this network. In the United States, we provide incineration through one fluidized bed thermal oxidation unit and four solids and liquids-capable incinerator facilities, and we operate one active hazardous waste liquid injection incinerator in Canada.

Commercial and Non-Commercial Landfills. In the United States and Canada, we operate seven commercial landfills with approximately 36.1 million cubic yards of remaining highly probable airspace. Six of our commercial landfills are designed and permitted for the disposal of hazardous waste and one landfill is operated for non-hazardous industrial waste disposal and, to a lesser extent, municipal solid waste. In addition to our commercial landfills, we also own and operate one

non-commercial landfill that only accepts waste from our on-site incinerator. See “Landfill Accounting” within Note 2, “Significant Accounting Policies,” to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K for additional information on our commercial and non-commercial landfills.

Wastewater Treatment Facilities. We operate a total of 12 facilities, of which 10 are owned and two are leased, that offer a range of wastewater treatment technologies and services. Wastewater treatment consists primarily of three types of services: hazardous wastewater treatment, sludge dewatering or drying and non-hazardous wastewater treatment.

Treatment, Storage and Disposal Facilities. We operate 33 TSDFs in the United States and Canada, of which 30 are owned and three are leased. Our TSDFs facilitate the treatment and movement of materials among our network of service centers and treatment and disposal facilities. Transportation may be accomplished by truck, rail, barge or a combination of modes, with our own assets or in conjunction with third-party transporters. Specially designed containment systems, vehicles and other equipment permitted for waste transport, together with drivers trained in transportation and waste handling procedures, provide for the movement of customer waste streams.

Other Hazardous Waste Management Properties. We also operate nine facilities specializing in solvent recovery, of which seven are owned and two are leased, and we own and operate two autoclave facilities specifically designed to treat medical waste.

Oil Processing, Blending and Packaging Facilities

Oil Terminals. We operate a total of 88 oil terminals, of which 54 are owned and 34 are leased, which collect or process used oil prior to delivery to our re-refineries or distribution as recycled fuel oil.

Oil Recycling and Re-refining Facilities. We own eight oil re-refineries, seven in the United States and one in Canada. Currently our re-refineries in Newark, California and Rollinsford, New Hampshire are idled. The remaining re-refineries have sufficient capacity to continue processing our used oil collections into new re-refined oil, lubricants and byproducts.

Oil Packaging and Blending Facilities. We operate a total of four oil packaging and blending facilities, of which three are owned and one is leased.

Item 2 of the 10-K filed Feb 18, 2026.18

The story

Founded by Alan McKim in 1980.1

Clean Harbors was founded in 1980 in Brockton, Massachusetts, by Alan McKim as a four-person tank cleaning business.

In November 1987, the company became a public company via an initial public offering.

In 1984, the company removed 130,000 gallons of fuel oil from the tanker Eldia, which became the largest ship to have been beached off Cape Cod.

From Wikipedia’s article on Clean Harbors, shared under CC BY-SA 4.0.7

Leadership

Who has led Clean Harbors, and when. Pick a name to see everywhere that person has worked.

Board members and other officers (59)

Subsidiaries and ownership

Subsidiaries (Exhibit 21)

  • Ace/Allwaste Environmental Services of Indiana, LLC Illinois8
  • Altair Disposal Services, LLC Delaware8
  • Aquilex Finance LLC Delaware8
  • Aquilex Intermediate Corporate Holdings LLC Delaware8
  • Aquilex Intermediate Holdings LLC Delaware8
  • Aquilex LLC Delaware8
  • Baton Rouge Disposal, LLC Delaware8
  • Bridgeport Disposal, LLC Delaware8
  • CARBER Holdings, Inc. Delaware8
  • CB Canada Acquisition, Inc. Ontario8
  • CB Canada Holdings, Inc. Ontario8
  • CB US Holdings, Inc. Delaware8
  • CH International Holdings, LLC Delaware8
  • Clean Harbors Andover, LLC Delaware8
  • Clean Harbors Aragonite, LLC Delaware8
  • Clean Harbors Arizona, LLC Delaware8
  • Clean Harbors BDT, LLC Delaware8
  • Clean Harbors Baton Rouge, LLC Delaware8
  • Clean Harbors Buttonwillow, LLC Delaware8
  • Clean Harbors Canada, Inc. New Brunswick8
  • Clean Harbors Caribe, Inc. Puerto Rico8
  • Clean Harbors Chattanooga, LLC Delaware8
  • Clean Harbors Clive, LLC Delaware8
  • Clean Harbors Coffeyville, LLC Delaware8
All 133 listed subsidiaries
  • Clean Harbors Colfax, LLC Delaware8
  • Clean Harbors Deer Park, LLC Delaware8
  • Clean Harbors Deer Trail, LLC Delaware8
  • Clean Harbors Development, LLC Delaware8
  • Clean Harbors Disposal Services, Inc. Delaware8
  • Clean Harbors El Dorado, LLC Delaware8
  • Clean Harbors Energy Services, ULC Alberta8
  • Clean Harbors Energy and Industrial Services Corp. Alberta8
  • Clean Harbors Energy and Industrial Services LP Alberta8
  • Clean Harbors Energy and Industrial Western Ltd. Alberta8
  • Clean Harbors Environmental Services, Inc. Massachusetts8
  • Clean Harbors Exploration Services, Inc. Nevada8
  • Clean Harbors Florida, LLC Delaware8
  • Clean Harbors Grassy Mountain, LLC Delaware8
  • Clean Harbors India LLP India8
  • Clean Harbors Industrial Services Canada, Inc. Alberta8
  • Clean Harbors Kansas, LLC Delaware8
  • Clean Harbors Kimball Realty, LLC Delaware8
  • Clean Harbors Kingston Facility Corporation Massachusetts8
  • Clean Harbors LaPorte, LLC Delaware8
  • Clean Harbors Laurel, LLC Delaware8
  • Clean Harbors Lodging Services LP Alberta8
  • Clean Harbors Lodging Services, ULC Alberta8
  • Clean Harbors Lone Mountain, LLC Delaware8
  • Clean Harbors Mercier, Inc. Quebec8
  • Clean Harbors Pecatonica, LLC Delaware8
  • Clean Harbors Production Services, ULC Alberta8
  • Clean Harbors Quebec, Inc. Quebec8
  • Clean Harbors Recycling Services of Chicago, LLC Delaware8
  • Clean Harbors Recycling Services of Ohio, LLC Delaware8
  • Clean Harbors Reidsville, LLC Delaware8
  • Clean Harbors San Jose, LLC Delaware8
  • Clean Harbors San Leon, Inc. Delaware8
  • Clean Harbors Services, Inc. Massachusetts8
  • Clean Harbors Surface Rentals Partnership Alberta8
  • Clean Harbors Surface Rentals USA, Inc. Delaware8
  • Clean Harbors Surface Rentals, ULC Alberta8
  • Clean Harbors Tennessee, LLC Delaware8
  • Clean Harbors Westmorland, LLC Delaware8
  • Clean Harbors White Castle, LLC Delaware8
  • Clean Harbors Wichita, LLC Delaware8
  • Clean Harbors Wilmington, LLC Delaware8
  • Clean Harbors of Baltimore, Inc. (DE Corp.) Delaware8
  • Clean Harbors of Braintree, Inc. Massachusetts8
  • Clean Harbors of Connecticut, Inc. (DE) Delaware8
  • Clean Harbors, Inc. Massachusetts8
  • Cousins Waste Control, LLC Ohio8
  • Crowley Disposal, LLC Delaware8
  • Cyn Oil Corporation Massachusetts8
  • Disposal Properties, LLC Delaware8
  • Emerald Services, Inc. Washington8
  • Emergency Response and Training Solutions, LLC Delaware8
  • EnviroSORT Inc. Alberta8
  • Environmental Management Alternatives, LLC Delaware8
  • Environmental Management Specialists, LLC Delaware8
  • GSX Disposal, LLC Delaware8
  • Green View Technologies, Inc. New Hampshire8
  • HPC Industrial Group, LLC Delaware8
  • HPC Industrial Services, LLC Delaware8
  • Hepaco Blocker, Inc. Delaware8
  • Hepaco GC, LLC Delaware8
  • Hepaco Holding, LLC Delaware8
  • Hepaco, LLC Delaware8
  • Hilliard Disposal, LLC Delaware8
  • HydroChem Canada ULC Alberta8
  • Industrial Service Oil Company, Inc. California8
  • Jesco Industrial Service, LLC Kentucky8
  • LJ Energy Services Intermediate Holding Corp. Delaware8
  • Laidlaw Environmental Services de Mexico S.A. de C.V. Mexico8
  • Lonestar Vacuum Inc. Alberta8
  • Lonestar West Enterprises LLC Oklahoma8
  • Lonestar West Services LLC Nevada8
  • Murphy's Waste Oil Service, Inc. Massachusetts8
  • NTS, LLC North Carolina8
  • Noble Oil Services, Inc. North Carolina8
  • Northeast Casualty Insurance Company Vermont8
  • PSC Industrial Holdings Corp. Delaware8
  • PSC Industrial Outsourcing of Michigan, LLC Ohio8
  • PSC Industrial Outsourcing, LP Delaware8
  • PSC Industrial, Inc. Delaware8
  • PSC LDAR Services, LLC Delaware8
  • Philip Services/North Central, LLC Iowa8
  • Plaquemine Remediation Services, LLC Delaware8
  • RMF Aquilex Corp. Delaware8
  • Ricky's Oil & Environmental Services, LLC Florida8
  • Roebuck Disposal, LLC Delaware8
  • Rosemead Oil Products, Inc. California8
  • SK D'Incineration Inc. Quebec8
  • Safety-Kleen Canada Inc. New Brunswick8
  • Safety-Kleen Envirosystems Company California8
  • Safety-Kleen Envirosystems Company of Puerto Rico, Inc. Indiana8
  • Safety-Kleen International, Inc. Delaware8
  • Safety-Kleen Systems, Inc. Wisconsin8
  • Safety-Kleen of California, Inc. California8
  • Safety-Kleen, Inc. Delaware8
  • Sawyer Disposal Services, LLC Delaware8
  • Seaport Environmental, LLC Delaware8
  • Service Chemical, LLC Delaware8
  • Spring Grove Resource Recovery, Inc. Delaware8
  • Synergy Hydrocarbon Recovery, LLC Florida8
  • Synergy Recycling of Central Florida, LLC Georgia8
  • Synergy Recycling, LLC Florida8
  • The Solvents Recovery Service of New Jersey, Inc. New Jersey8
  • Thermo Fluids Inc. Delaware8
  • Thompson Industrial Services, LLC North Carolina8
  • Tri-vax Enterprises Ltd. Alberta8
  • Tulsa Disposal, LLC Delaware8
  • Versant Energy Services, Inc. Delaware8
  • Versant Energy Services, LP Alberta8

The subsidiaries the company lists in Exhibit 21 of its annual report, as filed.

Timeline

  1. Oct 5, 20268-K Entered a material agreement; New debt or obligation; Other events91
  2. Sep 18, 20268-K Other events92
  3. Aug 12, 20268-K Other events93
  4. Jul 29, 20268-K Results of operations94
  5. May 20, 20268-K Executive or director change; Regulation FD disclosure95
  6. May 20, 20268-K Shareholder vote96
  7. May 14, 20268-K Other events97
  8. May 6, 20268-K Results of operations98
  9. Feb 18, 20268-K Results of operations99
  10. Oct 29, 20258-K Results of operations100
  11. Oct 10, 20258-K Entered a material agreement; New debt or obligation101
  12. Sep 26, 20258-K Other events102
  13. Jul 6, 2023New chief executive Michael Louis Battles becomes CEO20
  14. Jul 6, 2023New chief executive Eric W. Gerstenberg becomes CEO19
  15. Jan 11, 2006New chief executive Alan McKim becomes CEO21
  16. Mar 26, 1990Went public Listed on NYSE1
  17. 1980Founded Founded1

Calendar

Coming up

  1. Oct 28, 2026 · Before the openReports results for the quarter ending Sep/2026 A year earlier it reported $2.21 a share, on Oct 29, 2025.103

When it reported results

  1. Jul 29, 2026Reported quarterly or annual results94
  2. May 6, 2026Reported quarterly or annual results98
  3. Feb 18, 2026Reported quarterly or annual results99
  4. Oct 29, 2025Reported quarterly or annual results100
  5. Jul 30, 2025Reported quarterly or annual results104
  6. Apr 30, 2025Reported quarterly or annual results105
  7. Feb 19, 2025Reported quarterly or annual results106
  8. Oct 30, 2024Reported quarterly or annual results107

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

578 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 49 major events, 425 insider forms, 19 large holders, 65 other. The latest 20:

  1. Oct 5, 20268-K EDGAR
  2. Sep 18, 20268-K EDGAR
  3. Aug 18, 20264 EDGAR
  4. Aug 14, 2026144 EDGAR
  5. Aug 14, 20264/A EDGAR
  6. Aug 14, 20264/A EDGAR
  7. Aug 14, 20264/A EDGAR
  8. Aug 14, 20264/A EDGAR
  9. Aug 14, 20264/A EDGAR
  10. Aug 14, 20264/A EDGAR
  11. Aug 14, 20264/A EDGAR
  12. Aug 12, 20264 EDGAR
  13. Aug 12, 20268-K EDGAR
  14. Aug 11, 20264 EDGAR
  15. Aug 6, 2026SCHEDULE 13G EDGAR
  16. Aug 3, 2026144 EDGAR
  17. Aug 3, 20264 EDGAR
  18. Jul 29, 202610-Q EDGAR
  19. Jul 29, 20268-K 10-Q EDGAR
  20. Jul 20, 20264 EDGAR

The 578 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

113 open-market trades by officers, directors and large owners since October 2021: 4 buys and 109 sales. Grants, option exercises and gifts are left out.

DateWhoTradeSharesPriceValueFiling
Aug 14, 2026GERSTENBERG ERIC WCO-CEOSale2,500$321.34$803.4KForm 4
Aug 3, 2026Robertson AndreaDirectorSale789$314.01$247.8KForm 4
May 26, 2026States LaurenDirectorSale789$286.19$225.8KForm 4
May 11, 2026Polito KarynDirectorBuy460$295.13$135.8KForm 4
Mar 18, 2026Reed Marcy L.DirectorSale836$287.94$240.7KForm 4
Mar 18, 2026GERSTENBERG ERIC WCO-CEOSale1,000$293.00$293.0KForm 4
Mar 18, 2026GERSTENBERG ERIC WCO-CEOSale1,000$293.00$293.0KForm 4
Mar 17, 2026Weber Brian PEVP (CHESI)Sale4,683$293.39$1.4MForm 4
Mar 4, 2026MCKIM ALAN SEXEC CHAIR, CTO.Sale100,000$292.65$29.3MForm 4
Feb 23, 2026GERSTENBERG ERIC WCO-CEOSale2,500$279.86$699.6KForm 4
Feb 23, 2026GERSTENBERG ERIC WCO-CEOSale2,500$279.86$699.6KForm 4
Feb 20, 2026Gabriel Sharon M.EVP/CIO (CHESI)Sale3,540$282.07$998.5KForm 4
Feb 20, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERSale2,788$281.31$784.3KForm 4
Feb 20, 2026Dugas Eric J.EVP CHIEF FINANCIAL OFFICERSale2,788$281.31$784.3KForm 4
Feb 19, 2026Welch John R.DirectorSale750$273.07$204.8KForm 4
Feb 19, 2026MCKIM ALAN SEXEC CHAIR, CTO.Sale100,000$281.14$28.1MForm 4
Dec 16, 2025GERSTENBERG ERIC WCO-CEOSale601$240.90$144.8KForm 4
Aug 1, 2025Battles Michael LouisCO-CEOBuy2,000$233.50$467.0KForm 4
Jul 31, 2025Robertson AndreaDirectorSale836$233.64$195.3KForm 4
Jun 13, 2025Weber Brian PEVP (CHESI)Sale3,035$227.17$689.5KForm 4

All 113 trades can be filtered by person here when JavaScript is on.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Executive pay

What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.

YearExecutiveAgeSalaryTotal pay
2025Eric W. Gerstenberg57$1.0M$5.9M114
2025Michael L. Battles57$1.0M$5.9M114
2025Alan S. McKim71$900.0K$2.5M114
2025Brian P. Weber58$630.0K$2.1M114
2025Jeroen Diderich58$625.0K$2.1M114
2025Eric J. Dugas48$565.0K$1.9M114
2024Co-Chief Executive Officer and$900.0K$5.3M114
2024Executive Chairman and$900.0K$2.4M114
2024PresidentSafety-Kleen$576.7K$1.8M114
2024Executive VicePresident and$425.0K$1.4M114
2023Co-President$810.0K$4.9M114
2023Chief Technology Officer$991.2K$2.3M114
2023Sustainability Solutions$532.1K$2.0M114
2023Chief Financial Officer$399.8K$1.0M114

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
BlackRock, Inc.5,076,220$1.5B0.0%+273,728
Wellington Management Group Llp3,155,233$942.6M0.2%−421,801
Fmr LLC3,002,654$897.0M0.0%+901,475
Vanguard Capital Management LLC2,182,972$652.2M0.0%+13,608
Vanguard Portfolio Management LLC1,983,336$592.5M0.0%+20,385
Jupiter Topco LLC1,598,574$477.6M0.2%New
State Street Corp1,582,004$472.6M0.0%+44,707
D1 Capital Partners L.P.1,315,501$393.0M1.1%−22,780
Geode Capital Management, LLC1,129,240$337.4M0.0%+183,348
Clearbridge Investments, LLC1,126,744$336.6M0.3%−76,033
First Trust Advisors LP993,170$296.7M0.2%+214,729
Snyder Capital Management L P922,182$275.5M4.8%−7,145
Goldman Sachs Group Inc900,225$268.9M0.0%−28,852
Durable Capital Partners LP892,405$266.6M2.6%−158,568
FIL Ltd877,433$262.1M0.2%+367,754
Select Equity Group, L.P.728,374$217.6M1.2%−403,228
Norges Bank632,096$188.8M0.0%New
Pictet Asset Management Holding SA608,808$181.9M0.2%−633,334
Dimensional Fund Advisors LP606,181$181.1M0.0%−2,528
Nordea Investment Management Ab526,178$157.1M0.1%−42,230
Hood River Capital Management LLC498,747$149.0M1.1%+374,472
Aqr Capital Management LLC478,075$142.8M0.0%+297,407
Bank Of America Corp /de/477,994$142.8M0.0%+166,087
Charles Schwab Investment Management Inc473,991$141.6M0.0%−656
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC466,863$139.5M0.0%−50,698

13F reports cover disclosed long positions in U.S. stocks only.

Members of Congress who traded it

13 trades disclosed by members of Congress. “Vs S&P since” is the stock’s change since the trade minus the S&P 500’s.

DateMemberTradeAmountVs S&P sinceFiling
Aug 25, 2026April McClain DelaneyDemocratic, HouseSale$50,001 - $100,000−3.0%Report
Jul 28, 2026April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−1.2%Report
Jul 27, 2026April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−1.6%Report
Jul 24, 2026April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−0.9%Report
May 1, 2026April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000+4.3%Report
Apr 30, 2026April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000+5.0%Report
Feb 23, 2026April McClain DelaneyDemocratic, HouseBuy$15,001 - $50,000+0.9%Report
Dec 3, 2025April McClain DelaneyDemocratic, HouseBuy$1,001 - $15,000+22.2%Report
Aug 7, 2025April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−10.1%Report
Jun 20, 2025April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−11.7%Report
Feb 10, 2025April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−8.2%Report
Feb 7, 2025April McClain DelaneyDemocratic, HousePartial sale$1,001 - $15,000−8.1%Report
Jan 13, 2025Robert P. Bresnahan, Jr.Republican, HouseSale$1,001 - $15,000−6.4%Report

Members report amounts as ranges, not exact figures. Returns are price-only (no dividends).

SEC filer profile

How Clean Harbors is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARCLEAN HARBORS INC2
  • CIK0000822818
  • Employer ID (EIN)04-299778018
  • Filer statusLarge accelerated filer not an emerging growth company; not a smaller reporting company; not a shell company18
  • Incorporated inMassachusetts18
  • Fiscal year endsDecember 312
  • Industry code (SIC)4955 Hazardous Waste Management2
  • SEC reviewing officeOffice of Energy & Transportation, Division of Corporation Finance2
  • Business address42 Longwater Drive, P.O. Box 9149, Norwell, MA 02061-91492
  • Mailing address42 Longwater Drive, Norwell, MA 02061-91492
  • Phone781-792-50002
  • Shares outstanding52,846,032 as of May 1, 202616
  • Public float$11.7B as of Jun 30, 202518
  • AuditorDeloitte & Touche LLP, Boston, Massachusetts PCAOB ID 34; it also attests to the company’s internal control over financial reporting18
  • On EDGAR sinceFeb 25, 19942
  • Filings2,665 in all: 4 (1,755), 8-K (230), 10-Q (98), SC 13G/A (76), 3 (55), 4/A (53), 144 (50), 5 (49)2
    All 45 form types

    SC 13G (40), DEF 14A (33), 10-K (30), CORRESP (24), UPLOAD (24), SC 13D/A (18), DEFA14A (16), ARS (11), 8-K/A (8), S-8 (8), 424B3 (7), S-4/A (7), NT 10-K (6), S-4 (6), SC 13D (6), SCHEDULE 13G/A (6), EFFECT (5), PRE 14A (5), 10-Q/A (4), NT 10-Q (4), S-3/A (4), 3/A (3), S-2/A (3), 10-K/A (2), 10-K405 (2), 424B2 (2), 424B5 (2), S-3 (2), S-3ASR (2), SCHEDULE 13G (2), 15-15D (1), 25 (1), 424B4 (1), 8-A12B (1), CERTNYS (1), PRER14A (1), S-2 (1)

  • Latest filingsAnnual report (10-K) Feb 18, 2026
    Quarterly report (10-Q) Jul 29, 2026
    Proxy statement (DEF 14A) Apr 10, 2026
    Latest 8-K (8-K) Oct 5, 2026

Securities registered for trading

ClassSymbolExchange
Common Stock, $0.01 par valueCLHNew York Stock Exchange

From the cover page of the 10-K filed Feb 18, 2026 (Section 12(b) of the Exchange Act).18

Risk factors and legal proceedings

The risks Clean Harbors names in Item 1A of its 10-K filed Feb 18, 2026: 23 risks under these headings, as written.18

  • OPERATIONAL RISKS
  • Our businesses are subject to operational and safety risks. Failure to limit our exposure to such risks could have an adverse impact on our results.
  • Our operations are increasingly dependent upon technology. Failure of these technologies, failure to upgrade or innovate these technologies, failure to property implement and maintain these technologies or failure to identify and develop new technologies could have an adverse impact on our results.
  • A cybersecurity incident could negatively impact our business, operations and relationships with customers.
  • Natural disasters or other catastrophic events, as well as their residual macroeconomic effects, could negatively affect our business.
  • Our growth and success are dependent upon our people. If we lose key personnel and are unable to hire additional qualified personnel in a timely manner, our business may be harmed. A change or deterioration in our relations with our employees could have a materially adverse effect on our business.
  • INDUSTRY RISKS
  • The hazardous waste management business is subject to significant environmental liabilities.
  • The hazardous waste management industry is subject to significant economic and business risks.
  • A significant portion of our business depends upon the demand for emergency response services at industrial facilities or on our roadways, railways or waterways, and other remedial projects and regulatory developments over which we have no control.
  • If our assumptions relating to expansion of our landfills should prove inaccurate, our results of operations and cash flow could be adversely affected.
  • Reductions in the demand for oil products and automotive services and volatility in oil prices in the markets we serve may negatively affect certain of our businesses.
The other 13 risks
  • LEGAL, ENVIRONMENTAL AND REGULATORY COMPLIANCE RISKS
  • Our businesses are subject to numerous statutory and regulatory requirements, which may change in the future.
  • The extensive environmental regulations to which we are subject, including potential climate change legislation and regulations, may increase our costs and potential liabilities and limit our ability to operate and expand our facilities.
  • We are subject to existing and potential product liability lawsuits relating to our parts washer services.
  • STRATEGIC TRANSACTION RISKS
  • Failure to correctly identify and execute upon strategic acquisitions and divestitures or effectively execute large-scale capital projects could adversely impact our future results.
  • Future acquisitions of companies may expose us to unknown liabilities.
  • INSURANCE, ACCOUNTING AND TAX RELATED RISKS
  • If we become unable to obtain, at reasonable cost, the insurance, surety bonds, letters of credit and other forms of financial assurance required for our facilities and operations, our business and results of operations would be adversely affected.
  • Our insurance coverage and self-insurance reserves may be inadequate to cover all significant risk exposures, and increasing costs to maintain adequate coverage may significantly impact our financial condition and results of operations.
  • Tax interpretations and changes in tax regulations and legislation could adversely affect our results of operations.
  • Fluctuations in foreign currency exchange could affect our financial results.
  • Certain adverse conditions have required, and future conditions might require, us to make substantial write-downs in our assets, which have adversely affected or would adversely affect our balance sheet and results of operations.
  • DEBT AND FINANCING RELATED RISKS
  • Our levels of outstanding debt and letters of credit could adversely affect our financial condition and ability to fulfill our obligations.
  • The covenants in our debt agreements may restrict our ability to operate our business and might lead to a default under our debt agreements.
  • COMMON STOCK RELATED RISKS
  • The Massachusetts Business Corporation Act and our By-Laws contain certain anti-takeover provisions.

Legal proceedings

See Note 17, “Commitments and Contingencies,” to our consolidated financial statements included in Item 8 of this Annual Report on Form 10-K for a description of legal proceedings.

The opening of Item 3, Legal Proceedings.18

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