Clean Harbors (CLH) Exec. VP George L. Curtis Withholds 1,757 Shares

What Happened
George L. Curtis, Executive Vice President of Clean Harbors (CLH), had 1,757 shares withheld to satisfy tax withholding obligations related to vesting. The shares were valued at $290.74 each, for a total of approximately $510,830. This was a tax-withholding disposition (code F), not an open-market sale.

Key Details

• Transaction date: 2026-07-01
• Shares withheld/disposed: 1,757 at $290.74 per share — total ≈ $510,830
• Transaction type/code: F (payment of tax liability by withholding of securities) — footnote: "Payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b‑3."
• Shares owned after transaction: Not stated in this filing
• Filing date: 2026-08-11 — this Form 4 was filed more than a month after the transaction (appears late vs. the usual 2-business‑day rule)

Context
Withholding shares to cover taxes is a routine administrative action when restricted stock or similar awards vest; it does not indicate an open-market sale and should not be read as a bullish or bearish trade by the insider. The filing simply documents the company retaining shares to satisfy the executive’s tax obligation.