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Clean Harbors Inc. planned insider sales

In the twelve months since 9 October 2025 insiders at Clean Harbors Inc. filed 13 Form 144 notices of planned sales, 229,343 shares worth $65.9 million at the time of filing, from 9 sellers. The latest, filed 14 August 2026: Gerstenberg Eric W (officer), 2,500 shares worth $805,000, planned for around 14 August 2026 through Raymond James & Associates, Inc..

FiledSellerRelationshipSharesValuePlanned saleBrokerHow acquiredFiling
14 August 2026Gerstenberg Eric WOfficer2,500$805,00014 August 2026Raymond James & Associates, Inc.Equity CompForm 144
3 August 2026Andrea RobertsonDirector789$247,7523 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
26 May 2026Lauren StatesDirector789$225,80426 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
18 March 2026Marcy ReedDirector836$240,71518 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
18 March 2026Gerstenberg Eric WOfficer1,000$290,00018 March 2026Raymond James & AssociatesEquity CompForm 144
17 March 2026Brian WeberOfficer4,683$1.4 million17 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 March 2026Alan S. McKimOfficer100,000$29.3 million4 March 2026Goldman Sachs & Co. LLCAcquired from public marketForm 144
23 February 2026Gerstenberg Eric WOfficer2,500$712,00023 February 2026Raymond James & AssociatesEquity CompForm 144
20 February 2026Eric DugasOfficer2,788$784,29220 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
20 February 2026Sharon M GabrielOfficer3,540$998,52820 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
19 February 2026John WelchDirector750$204,80619 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
19 February 2026Alan S. McKimOfficer108,567$30.5 million19 February 2026Goldman Sachs & Co. LLCAcquired as a gift; Acquired from public marketForm 144
16 December 2025Gerstenberg Eric WOfficer601$145,00015 December 2025Raymond James & AssociatesEquity CompForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.

Source

Form 144 filings on EDGAR for Clean Harbors Inc.: the company's filing index, each notice read from its own XML.

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