Institutional shares held 48.1 Million
140K calls
195K puts
Total value of holdings $10.9B
$31.7M calls
$44.1M puts
Market Cap $12.4B
54,103,200 Shares Out.
Institutional ownership 89.0%
# of Institutions 614


Latest Institutional Activity in CLH

Top Purchases

Q1 2025
Wellington Management Group LLP Shares Held: 5.29M ($1.21B)
Q1 2025
Janus Henderson Group PLC Shares Held: 2.14M ($490M)
Q1 2025
Ubs Asset Management Americas Inc Shares Held: 900K ($206M)
Q1 2025
Millennium Management LLC Shares Held: 363K ($83.2M)
Q1 2025
D1 Capital Partners L.P. Shares Held: 193K ($44.2M)

Top Sells

Q1 2025
Invesco Ltd. Shares Held: 713K ($163M)
Q1 2025
Select Equity Group, L.P. Shares Held: 1.09M ($250M)
Q1 2025
Handelsbanken Fonder Ab Shares Held: 305K ($69.8M)
Q1 2025
Ci Investments Inc. Shares Held: 18.1K ($4.14M)
Q1 2025
Marshall Wace, LLP Shares Held: 185K ($42.4M)

About CLH

Clean Harbors, Inc. provides environmental and industrial services in North America. The company operates through two segments, Environmental Services and Safety-Kleen Sustainability Solutions. The Environmental Services segment collects, transports, treats, and disposes hazardous and non-hazardous waste, such as resource recovery, physical treatment, fuel blending, incineration, landfill disposal, wastewater treatment, lab chemicals disposal, and explosives management services; and 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 performs field services. The Safety-Kleen Sustainability Solutions segment offers specially designed parts washers; automotive and industrial cleaning products, such as antifreeze, windshield washer fluid, degreasers, glass and floor cleaners, hand cleaners, absorbents, mats, and spill kits; pickup and transportation services for hazardous and non-hazardous containerized waste for recycling or disposal; 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 remove and collect waste fluids found at metal fabricators, auto maintenance providers, and general manufacturers. This segment also manufactures, formulates, packages, distributes, and markets lubricants; and provides containerized waste, vacuum services, used motor oil collection, and contract blending and packaging services. Clean Harbors, Inc. was incorporated in 1980 and is headquartered in Norwell, Massachusetts.


Insider Transactions at CLH

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
78.8K Shares
From 21 Insiders
Grant, award, or other acquisition 77.8K shares
Open market or private purchase 1.05K shares
Sell / Disposition
241K Shares
From 21 Insiders
Payment of exercise price or tax liability 45K shares
Open market or private sale 128K shares
Bona fide gift 50.8K shares
Sale (or disposition) back to the issuer 16.6K shares

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