Institutional shares held 48 Million
140K calls
195K puts
Total value of holdings $11.1B
$32.3M calls
$44.9M puts
Market Cap $12.5B
54,103,200 Shares Out.
Institutional ownership 88.65%
# of Institutions 614


Latest Institutional Activity in CLH

Top Purchases

Q2 2025
Cooper Investors Pty LTD Shares Held: 27.5K ($6.34M)
Q2 2025
Sky Investment Group LLC Shares Held: 900 ($207K)
Q2 2025
Congress Park Capital LLC Shares Held: 7.87K ($1.81M)
Q2 2025
Perpetual LTD Shares Held: 60.9K ($14M)
Q2 2025
Umb Bank, N.A. Shares Held: 527 ($121K)

Top Sells

Q2 2025
Assenagon Asset Management S.A. Shares Held: 20.8K ($4.79M)
Q2 2025
Pacific Capital Partners LTD Shares Held: 17.5K ($4.03M)
Q2 2025
Farther Finance Advisors, LLC Shares Held: 1.07K ($246K)
Q2 2025
Fiduciary Alliance LLC Shares Held: 3.04K ($701K)
Q2 2025
Central Pacific Bank Trust Division Shares Held: 851 ($196K)

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
67.8K Shares
From 21 Insiders
Grant, award, or other acquisition 66.8K shares
Open market or private purchase 1.05K shares
Sell / Disposition
298K Shares
From 24 Insiders
Payment of exercise price or tax liability 39.1K shares
Open market or private sale 191K shares
Bona fide gift 50.8K shares
Sale (or disposition) back to the issuer 16.6K shares

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