13F Pro

SEC Form 4 reporting owner

Gerstenberg Eric W

Gerstenberg Eric W has filed 10 Form 4 transactions reported between December 16, 2025 and August 14, 2026, as CO-CEO of CLEAN HARBORS INC.

Name as filed: GERSTENBERG ERIC W

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$1.9M
4 lines
Companies
1
with Form 4 filings
Latest transaction
Aug 14, 2026
transaction date

Roles and reported holdings

  • CLHCLEAN HARBORS INC
    Dec 16, 2025 – Aug 14, 2026

    CO-CEO

    Held directly56,793 sh as of Aug 14, 2026 · Form 4

    24 months: $1.9M sold

Transaction history

All 10 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Aug 14, 2026CLHCO-CEOOpen-market saleCode S · direct2,500$803K@ $321.34Form 4
Jul 1, 2026CLHCO-CEOShares withheld for tax or exercise priceCode F · direct564$164K@ $290.74Form 4
Mar 18, 2026CLHCO-CEOOpen-market saleCode S · direct1,000$293K@ $293.00Form 4
Mar 13, 2026CLHCO-CEODisposition to issuerCode D · direct2,166—Form 4
Mar 13, 2026CLHCO-CEOShares withheld for tax or exercise priceCode F · direct977$282K@ $288.93Form 4
Feb 23, 2026CLHCO-CEOOpen-market saleCode S · direct2,500$700K@ $279.86Form 4
Feb 2, 2026CLHCO-CEOShares withheld for tax or exercise priceCode F · direct4,934$1.3M@ $259.91Form 4
Feb 1, 2026CLHCO-CEOGrant or awardCode A · direct10,690—Form 4
Feb 1, 2026CLHCO-CEOGrant or awardCode A · direct10,290—Form 4
Dec 16, 2025CLHCO-CEOOpen-market saleCode S · direct601$145K@ $240.90Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.