NYSE:CLH

Clean Harbors Stock Insider Trading

Industrials > Waste Management

Buy CLH

*Your capital is at risk

$286.63

+10.64 (+3.86%)

At Close: Jun 03, 2026

Clean Harbors Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -90.32. In total, the insiders bought 75.67K and sold 297.75K CLH shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-90.32
● Buy	75.67K shares
● Sell	297.75K shares
34% Buy Activity Negligible or No Correlation
Sell Signal Medium Confidence Mar 04, 2026 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -90.32. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 26, 2026 Sell	Common Stock S-Sale	States Lauren Director	Director	789 Value: $225.8K
May 20, 2026 Buy	Common Stock A-Award	Polito Karyn Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Galante Edward G Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Preston John T Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Quirk Alison A. Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Reed Marcy L. Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Robertson Andrea Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Stewart Shelley Jr Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Willett Robert Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	Welch John R. Director	Director	652 Value: $190.0K
May 20, 2026 Buy	Common Stock A-Award	States Lauren Director	Director	652 Value: $190.0K
May 11, 2026 Buy	Common Stock P-Purchase	Polito Karyn Director	Director	460 Value: $135.8K
May 11, 2026 Buy	Common Stock A-Award	Polito Karyn Director	Director	460 Value: $135.8K
May 11, 2026 Sell	Common Stock G-Gift	Robertson Andrea Director	Director	342 Value: $0
Mar 18, 2026 Sell	Common Stock S-Sale	Reed Marcy L. Director	Director	836 Value: $240.7K
Mar 18, 2026 Sell	Common Stock S-Sale	Gerstenberg Eric W Co-ceo	CEO / President	1 000 Value: $293.0K
Mar 17, 2026 Sell	Common Stock S-Sale	Weber Brian P EVP (chesi)	Officer	4 683 Value: $1.37M
Mar 13, 2026 Sell	Common Stock D-Return	Battles Michael Louis Co-ceo	CEO / President	2 166 Value: $0
Mar 13, 2026 Sell	Common Stock D-Return	Curtis George L Exec. Vice President (chesi)	CEO / President	1 028 Value: $0
Mar 13, 2026 Sell	Common Stock F-InKind	Curtis George L Exec. Vice President (chesi)	CEO / President	350 Value: $101.1K
Mar 13, 2026 Sell	Common Stock F-InKind	Dugas Eric J. EVP Chief Financial Officer	C-Suite Officer	630 Value: $182.0K
Mar 13, 2026 Sell	Common Stock D-Return	Geer Charles H. Ii EVP, Industrial Services	Officer	139 Value: $0
Mar 13, 2026 Sell	Common Stock D-Return	Harrison Robert W. EVP, Ehs	Officer	368 Value: $0
Mar 13, 2026 Sell	Common Stock F-InKind	Gerstenberg Eric W Co-ceo	CEO / President	977 Value: $282.3K
Mar 13, 2026 Sell	Common Stock D-Return	Gabriel Sharon M. EVP/cio (chesi)	Officer	1 401 Value: $0

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT CLEAN HARBORS INC

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, an...

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