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Insider trade

Clean Harbors (CLH)CEO sold ~$803K

Eric W Gerstenberg, CEO at Clean Harbors, sold ~$803K of Clean Harbors shares.

~$803K
Approx. value · 2,500 sh @ $321.34
57K
Holds after · shares reported
Traded
Aug 14, 2026
Filed
Aug 18, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

  1. Feb 10, 2026Federal contract · $547K obligatedDepartment of Agriculture awarded CLEAN HARBORS INC: $547K obligated to date
  2. Feb 20, 2026InsiderCFO sold ~$784K of CLH shares in the open market
  3. Feb 23, 2026InsiderCEO sold ~$700K of CLH shares in the open market
  4. Mar 18, 2026InsiderCEO sold ~$293K of CLH shares in the open market
  5. Apr 22, 2026Federal contract · $1.1M obligatedDepartment of Defense awarded CLEAN HARBORS INC: $1.05M obligated to date
  6. Jun 14, 2026Federal contract · $455K obligatedDepartment of the Treasury awarded CLEAN HARBORS INC: $455K obligated to date
  7. Jun 26, 2026Federal contract · $669K obligatedDepartment of Defense awarded CLEAN HARBORS INC: $669K obligated to date
  8. Jul 24, 2026CongressDisclosed partial sale of CLH — reported range $1,001 - $15,000
  9. Jul 27, 2026CongressDisclosed partial sale of CLH — reported range $1,001 - $15,000
  10. Jul 28, 2026CongressDisclosed partial sale of CLH — reported range $1,001 - $15,000
  11. Jul 29, 2026Company filing · Form 8-K · ResultsReported its results
  12. Aug 3, 2026InsiderDirector sold ~$248K of CLH shares in the open market
  13. Aug 14, 2026 · this disclosureInsiderCEO sold ~$803K of CLH shares in the open market

What came next

  1. Aug 25, 2026CongressDisclosed sale of CLH — reported range $50,001 - $100,000
  2. Oct 1, 2026Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations (and 1 more item)
View the official recordSEC Form 4

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Clean Harbors

For Clean Harbors, OQRO holds 5 insider filings (SEC Form 4 or Form 144), 4 Congress trade reports, 14 fund holdings reports (13F) and 2 federal contract awards dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its CLH page.

Other recent filings by Eric W Gerstenberg, CO-CEO

The full history of Eric W Gerstenberg, CO-CEO is on the profile page.

How this filing works

Other disclosures at Clean Harbors

Everything OQRO holds on this company is on its CLH page.

This is one filing. OQRO holds the rest

Insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings and federal contract awards, each one in plain words next to its official filing. On this page it opens why the trade stands out, what the company did around that time, the price since, and every field of the form.

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