DOUG BLACK - 04 Nov 2025 Form 4 Insider Report for SiteOne Landscape Supply, Inc. (SITE)

Role: CEO, Director
Signature: /s/ John Guthrie, attorney-in-fact for Doug Black
Issuer symbol: SITE
Transactions as of: 04 Nov 2025
Net transactions value: $0
Form type: 4
Filing time: 06 Nov 2025, 16:52:11 UTC
Previous filing: 05 Sep 2025
Next filing: 06 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BLACK DOUG	CEO, Director	MANSELL OVERLOOK, 300 COLONIAL CENTER PARKWAY, SUITE 600, ROSWELL	/s/ John Guthrie, attorney-in-fact for Doug Black	06 Nov 2025	0001672083

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SITE	Common Stock	Gift	$0	-8,000	-1.6%	$0.000000	485,180	04 Nov 2025	Direct	F1
holding	SITE	Common Stock						3,591	04 Nov 2025	By Family Trust	F2
holding	SITE	Common Stock						93,675	04 Nov 2025	By SLAT

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Charitable gift.
F2	Reflects indirect ownership by a family trust for which the Reporting Person's spouse serves as trustee.