<SEC-DOCUMENT>0001104659-21-088237.txt : 20210701
<SEC-HEADER>0001104659-21-088237.hdr.sgml : 20210701
<ACCEPTANCE-DATETIME>20210701161055
ACCESSION NUMBER:		0001104659-21-088237
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210701
DATE AS OF CHANGE:		20210701

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Diaz Fred M
		CENTRAL INDEX KEY:			0001712371

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37760
		FILM NUMBER:		211065961

	MAIL ADDRESS:	
		STREET 1:		9614 AMALFI CT
		CITY:			BRENTWOOD
		STATE:			TN
		ZIP:			37027

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SiteOne Landscape Supply, Inc.
		CENTRAL INDEX KEY:			0001650729
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-PROFESSIONAL & COMMERCIAL EQUIPMENT & SUPPLIES [5040]
		IRS NUMBER:				364485550
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0102

	BUSINESS ADDRESS:	
		STREET 1:		MANSELL OVERLOOK
		STREET 2:		300 COLONIAL CENTER PARKWAY, SUITE 600
		CITY:			ROSWELL
		STATE:			GA
		ZIP:			30076
		BUSINESS PHONE:		(470) 277-7000

	MAIL ADDRESS:	
		STREET 1:		MANSELL OVERLOOK
		STREET 2:		300 COLONIAL CENTER PARKWAY, SUITE 600
		CITY:			ROSWELL
		STATE:			GA
		ZIP:			30076
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2121276d1_4.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-06-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001650729</issuerCik>
        <issuerName>SiteOne Landscape Supply, Inc.</issuerName>
        <issuerTradingSymbol>SITE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001712371</rptOwnerCik>
            <rptOwnerName>Diaz Fred M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>MANSELL OVERLOOK</rptOwnerStreet1>
            <rptOwnerStreet2>300 COLONIAL CENTER PARKWAY, SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>ROSWELL</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30076</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2021-06-30</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>137</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9286</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents deferred stock units granted as director fees. The deferred stock units are fully vested on grant, but settlement is deferred until the earlier of Mr. Diaz's termination of board service and a change in control of the Issuer.</footnote>
        <footnote id="F2">Includes deferred share units.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Briley Brisendine, Attorney-in-fact for Fred M. Diaz</signatureName>
        <signatureDate>2021-07-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
