Battles Michael Louis 4

What Happened

• Michael L. Battles, Co-CEO and Director of Clean Harbors, disposed of a total of 3,314 shares on 2026-03-13. He had 1,148 shares withheld to satisfy tax liabilities at $288.93 per share (value ~$331,692) and 2,166 restricted shares were forfeited to the issuer at $0.00 after performance targets were not achieved. These were not open-market sales.

Key Details

• Transaction date: 2026-03-13; filing date: 2026-03-17 (filed timely).
• Withholding: 1,148 shares @ $288.93 = $331,692 (code F — tax withholding incident to vesting under Rule 16b-3).
• Forfeiture: 2,166 shares @ $0.00 = $0 (disposition to issuer; restricted stock forfeited for unmet performance targets).
• Shares owned after transaction: Not specified in this Form 4 filing.
• Notable footnotes: F1 = tax withholding by surrendering shares; F2 = forfeiture due to Long Term Equity Incentive Program performance targets; F3 notes 15 shares acquired under the Clean Harbors Employee Stock Purchase Plan (ESPP).

Context

• These transactions represent internal adjustments (tax withholding and forfeiture of unearned awards), not open-market buying or selling, and therefore do not necessarily indicate a change in the insider’s view of the company. No exercise-for-cash sale or 10b5-1 plan is indicated.