BLACK DOUG 4

What Happened

• Doug Black, CEO and director of SiteOne Landscape Supply (SITE), had 3,865 restricted stock units (RSUs) convert into 3,865 common shares on Feb 5, 2026. To cover tax withholding, 1,049 of those shares were surrendered at $148.03/share for a total withholding value of $155,283, leaving a net issuance of 2,816 shares to Mr. Black. The filing reports the RSU conversion (derivative exercise/ conversion) and the tax-withholding disposition.

Key Details

• Transaction date: February 5, 2026; Filing date: February 9, 2026 (filed 4 calendar days after the transaction; exceeds the usual 2-business-day Form 4 window).
• Vesting/conversion: 3,865 RSUs converted into 3,865 shares (reported as derivative exercise/conversion).
• Tax withholding: 1,049 shares withheld @ $148.03 = $155,283 (reported as disposition to satisfy tax liability).
• Net shares received: 3,865 − 1,049 = 2,816 new shares issued to Mr. Black.
• Shares owned after transaction: Not specified in the provided filing data.
• Footnotes: F1 = RSUs convert one-for-one into common stock; F2 = indirect ownership via family trust (spouse is trustee); F3 = original grant of 15,460 RSUs on Feb 5, 2025 vesting in four equal annual installments beginning Feb 5, 2026.

Context

• This was a routine RSU vesting event, not an open-market purchase or sale. The withholding of shares to satisfy tax obligations is a common, administrative step (not a market sale signal).
• The RSUs were part of a multi-year grant (15,460 RSUs granted Feb 5, 2025; this represents the first annual tranche of 3,865). The filing indicates indirect family-trust holdings but does not change the nature of the vesting transaction.