Clean Harbors (CLH) Co-CEO Eric Gerstenberg Sells 1,000 Shares

What Happened

• Eric W. Gerstenberg, Co-CEO of Clean Harbors, sold 1,000 shares in an open-market sale on 2026-03-18 at $293.00 per share, generating $293,000 in gross proceeds. The Form 4 was later amended.

Key Details

• Transaction date and price: 2026-03-18, sale of 1,000 shares at $293.00 each (proceeds $293,000).
• Transaction type: Sale (open-market disposal) — Form 4 code S.
• Filing status: Amended Form 4 filed 2026-08-14 (the report was updated after the original filing).
• Footnote: F1 indicates a correction to the total number of shares held after the transaction — see the amended Form 4 for the corrected holdings.
• Timeliness: This is an amended/late filing relative to the transaction date; amended filings correct prior reports but delay public disclosure.

Context

• A single insider sale is common and can reflect routine liquidity needs rather than a change in outlook; purchases are generally considered more informative about insider sentiment. Investors should consult the amended Form 4 for the corrected total holdings and for any additional disclosures.