Weber Brian P Sells 814 Shares of Common Stock

Brian P. Weber, EVP (CHESI) of CLEAN HARBORS INC, reported a disposition of 814 shares of common stock on July 1, 2026. The transaction, coded as "F" (likely indicating a sale to cover taxes upon vesting), occurred at a price of $290.74 per share. Following this transaction, Mr. Weber directly owns 47,914 shares of common stock. The footnote indicates that this transaction was for the payment of tax liability by withholding of securities incident to vesting, in accordance with Rule 16b-3.