Greg Weller - 17 May 2021 Form 4 Insider Report for SiteOne Landscape Supply, Inc. (SITE)

Role: EVP of Operations
Signature: /s/ Briley Brisendine, Attorney-in-fact Greg Weller
Issuer symbol: SITE
Transactions as of: 17 May 2021
Net transactions value: -$19,369
Form type: 4
Filing time: 19 May 2021, 16:15:59 UTC
Previous filing: 17 May 2021
Next filing: 21 May 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SITE	Common Stock	Options Exercise		+242	+2.3%		10,545	17 May 2021	Direct	F1
transaction	SITE	Common Stock	Tax liability	$19,369	-110	-1%	$176.08	10,435	17 May 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SITE	Restricted Stock Units	Options Exercise	$0	-242	-33%	$0.000000	485	17 May 2021	Common Stock	242		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Filed to report vesting of Restricted Stock Units ("RSUs"). RSUs convert into common stock on a one-for-one basis.
F2	On May 15, 2019, the Reporting Person was granted 970 restricted stock units, vesting in four equal annual installments beginning on May 15, 2020, subject to the Reporting Person's continued employment.