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Clean Harbors Inc

CLH
Exchange
NYSE
Industry
Hazardous Waste Management
SEC CIK
0000822818

In the last 90 days, Clean Harbors Inc insiders filed 0 open-market purchases and 5 sales; 663 institutions reported holding it in 13F filings for Q2 2026, worth $14.8B in total; D1 Capital Partners is the only superinvestor holding it.

Key figures

Insider buysOpen market, last 90 days
0
Insider sellsLast 90 days, $2.83M in total
5
13F holdersQ2 2026, +45 vs. previous quarter
663
13F valueReported value at the end of Q2 2026
$14.8B
Superinvestors holdingAt the end of Q2 2026
1

Price chart

Superinvestors holding CLH, Q2 2026

1 superinvestor reports holding Clean Harbors Inc on Form 13F. Percentages are the stock's share of each portfolio.

Go to the superinvestors tab

D1 Capital Partners

Dan Sundheim

1.1%

Clean Harbors Inc's share of the portfolio

Shares
1,315,501
Value
$393.0M

Latest insider trades

Open-market purchases and sales by Clean Harbors Inc insiders from Form 4, newest first.

See all insider trades
Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 18, 2026 (view filing)2:47 PM ETAug 144 daysGerstenberg Eric WCO-CEOSSale−2.50K$321.34−$803.4K−4.2%56.8K after
Aug 14, 2026 (view filing)9:20 AM ETMar 18149 daysGerstenberg Eric WCO-CEOSSale−1.00K$293.00−$293.0K−1.6%59.9K afterAmended
Aug 14, 2026 (view filing)9:13 AM ETFeb 23172 daysGerstenberg Eric WCO-CEOSSale−2.50K$279.86−$699.6K−3.8%64.0K afterAmended
Aug 14, 2026 (view filing)9:03 AM ETFeb 20175 daysDugas Eric J.EVP CHIEF FINANCIAL OFFICERSSale−2.79K$281.31−$784.3K−12.2%20.0K afterAmended
Aug 3, 2026 (view filing)12:04 PM ETAug 3Same dayRobertson AndreaDirectorSSale−789$314.01−$247.8K−8.1%8.98K after
May 27, 2026 (view filing)May 261 dayStates LaurenDirectorSSale−789$286.19−$225.8K−6.5%11.4K after
May 14, 2026 (view filing)May 113 daysPolito KarynDirectorPPurchase+460$295.13+$135.8K+15.3%3.48K afterAmended
Mar 19, 2026 (view filing)Mar 181 dayReed Marcy L.DirectorSSale−836$287.94−$240.7K−14.1%5.08K after
Mar 17, 2026 (view filing)Mar 17Same dayWeber Brian PEVP (CHESI)SSale−4.68K$293.39−$1.37M−8.8%48.7K after
Mar 5, 2026 (view filing)Mar 41 dayMcKim Alan SEXEC CHAIR, CTO.SSale−100.0K$292.65−$29.3M−4.6%2.07M after

Top 10 13F holders, Q2 2026

The largest institutional positions in Clean Harbors Inc at the end of Q2 2026; share changes are against Q1 2026.

See all 663 holders
Institutions holding CLH in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
BlackRock, Inc.5,076,220$1.52B0.02%+273,728+5.7%Added
Wellington Management Group LLP3,155,233$942.6M0.16%−421,801−11.8%Reduced
FMR LLC3,002,654$897.0M0.04%+901,475+42.9%Added
Vanguard Capital Management LLC2,182,972$652.2M0.01%+13,608+0.6%Added
Vanguard Portfolio Management LLC1,983,336$592.5M0.03%+20,385+1.0%Added
Jupiter Topco LLC1,598,574$477.6M0.19%+1,598,574New
State Street Corp1,582,004$472.6M0.01%+44,707+2.9%Added
D1 Capital Partners L.P.SuperinvestorD1 Capital Partners1,315,501$393.0M1.13%−22,780−1.7%Reduced
Geode Capital Management, LLC1,129,240$337.4M0.02%+183,348+19.4%Added
Clearbridge Investments, LLC1,126,744$336.6M0.28%−76,033−6.3%Reduced