Douglas William W III 4

What Happened Douglas William W III, a director of SiteOne Landscape Supply, Inc. (SITE), was granted 1,186 deferred stock units as director fee compensation on May 13, 2026. The units were granted at $0.00 (no cash paid) and are recorded as an award (transaction code A). This is a compensation grant rather than an open-market purchase or sale.

Key Details

• Transaction date: 2026-05-13; filing date: 2026-05-14 (timely).
• Amount granted: 1,186 deferred stock units; acquisition price: $0.00; reported value $0.
• Vesting: Units vest in full upon the earlier of (i) the day before the Company’s next annual meeting and (ii) the first anniversary of May 13, 2026 (per footnote F1).
• Settlement: Payment/settlement is deferred until the earlier of the reporting person’s termination of board service and a change in control (per F1).
• Shares owned after transaction: Not specified in the provided filing.
• Other notes: Footnote F2 indicates the reported amount includes deferred stock units. Exhibit 24 (Power of Attorney) is attached.

Context Deferred stock units represent a right to receive shares (or their cash equivalent) in the future and are a common form of director compensation; they do not indicate an immediate purchase or sale of stock. This filing documents routine equity compensation and does not on its own imply insider buying or selling intent.