Gabriel Sharon M. 4

What Happened
Gabriel Sharon, EVP/CIO of Clean Harbors (CLH), had 359 shares withheld to cover tax liability related to the vesting of equity on July 1, 2026. The shares were valued at $290.74 each, totaling about $104,376. This was a tax-withholding disposition (not an open-market sale) associated with a vesting event.

Key Details

• Transaction date: 2026-07-01; Filing date: 2026-07-06 (filed 5 days after the transaction). Form 4s are typically due within 2 business days.
• Shares withheld/disposed: 359 shares at $290.74 each; total ≈ $104,376.
• Post-transaction shares owned: not specified in the provided filing details.
• Footnote: F1 — payment of tax liability by withholding of securities incident to vesting of securities in accordance with Rule 16b-3.
• Transaction type code: F (tax withholding via share disposition), not a market sale (S) or purchase (P).

Context
This action reflects a routine tax-withholding mechanism when restricted stock or other equity vests; it does not indicate an independent decision to sell shares on the market and is generally considered administrative rather than a signal of sentiment. Rule 16b-3 provides an exemption that allows such withholding transactions incident to vesting for insiders.