Sansone Judith S 4

What Happened
Judith S. Sansone, a director of SiteOne Landscape Supply, was granted 1,186 deferred stock units (reported as 1,186 shares) on May 13, 2026 at $0.00 per unit (total reported value $0). This was an award of director compensation, not an open-market purchase or sale.

Key Details

• Transaction date: May 13, 2026; Form 4 filed May 14, 2026 (appears timely).
• Security: 1,186 deferred stock units (reported as shares) at $0.00 per unit.
• Shares owned after transaction: not specified in this Form 4.
• Footnote F1: Units vest in full on the earlier of (i) the day before the next annual meeting and (ii) the first anniversary of May 13, 2026; settlement is deferred until the earlier of termination of board service and a change in control.
• Footnote F2: Indicates totals include deferred stock units.
• Remarks: Exhibit 24 (Power of Attorney) included.

Context
Deferred stock units are a form of non-cash director compensation and do not represent a market buy or sell. Vesting and settlement terms mean these units convert to shares (or equivalent value) only on specified events, so this grant is routine compensation rather than an immediate insider market signal.