144 0001672098 XXXXXXXX LIVE 0001650729 SiteOne Landscape Supply, Inc. 001-37760 MANSELL OVERLOOK 300 COLONIAL CENTER PARKWAY, SUITE 600 ROSWELL GA 30076 (470) 277-7000 Brisendine L Briley Jr Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

12000 1596000.00 44809549 07/10/2025 NYSE Common 07/10/2025 Option Granted - 05/12/2016 Issuer N 12000 07/10/2025 Cash N Leonard B Brisendine Jr

300 Colonial Center Parkway Suite 600 Roswell GA 30076

Common 07/01/2025 9035 1165515.00 07/10/2025 /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Leonard B. Brisendine Jr