<SEC-DOCUMENT>0000080255-25-000860.txt : 20251205
<SEC-HEADER>0000080255-25-000860.hdr.sgml : 20251205
<ACCEPTANCE-DATETIME>20251205125256
ACCESSION NUMBER:		0000080255-25-000860
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251205
DATE AS OF CHANGE:		20251205

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SmartStop Self Storage REIT, Inc.
		CENTRAL INDEX KEY:			0001585389
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				461722812
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-92834
		FILM NUMBER:		251552135

	BUSINESS ADDRESS:	
		STREET 1:		10 TERRACE ROAD
		CITY:			LADERA RANCH
		STATE:			CA
		ZIP:			92694
		BUSINESS PHONE:		949 429 6600

	MAIL ADDRESS:	
		STREET 1:		10 TERRACE ROAD
		CITY:			LADERA RANCH
		STATE:			CA
		ZIP:			92694

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Strategic Storage Trust II, Inc.
		DATE OF NAME CHANGE:	20130828

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PRICE T ROWE ASSOCIATES INC /MD/
		CENTRAL INDEX KEY:			0000080255
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY & COMMODITY BROKERS, DEALERS, EXCHANGES & SERVICES [6200]
		ORGANIZATION NAME:           	09 Crypto Assets
		EIN:				520556948
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1307 POINT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21231
		BUSINESS PHONE:		(410)345-2000

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 89000
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21289
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:ns2="http://www.sec.gov/edgar/common">
    <headerData>
        <submissionType>SCHEDULE 13G/A</submissionType>
        <previousAccessionNumber>0000080255-25-000231</previousAccessionNumber>
        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0000080255</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
            </filer>
            <liveTestFlag>LIVE</liveTestFlag>


        </filerInfo>
    </headerData>
    <formData>
        <coverPageHeader>
            <amendmentNo>3</amendmentNo>
            <securitiesClassTitle>REIT</securitiesClassTitle>
            <eventDateRequiresFilingThisStatement>11/30/2025</eventDateRequiresFilingThisStatement>
            <issuerInfo>
                <issuerCik>0001585389</issuerCik>
                <issuerName>SMARTSTOP SELF STORAGE REIT</issuerName>
                <issuerCusip>83192D402</issuerCusip>
                <issuerPrincipalExecutiveOfficeAddress>
                    <ns2:street1>10 TERRACE ROAD</ns2:street1>
                    <ns2:city>LADERA RANCH</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>92694</ns2:zipCode>
                </issuerPrincipalExecutiveOfficeAddress>
            </issuerInfo>
            <designateRulesPursuantThisScheduleFiled>
                <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
            </designateRulesPursuantThisScheduleFiled>
        </coverPageHeader>
        <coverPageHeaderReportingPersonDetails>

            <reportingPersonName>T. Rowe Price Associates, Inc.</reportingPersonName>
            <citizenshipOrOrganization>MD</citizenshipOrOrganization>
            <reportingPersonBeneficiallyOwnedNumberOfShares>
                <soleVotingPower>5063178</soleVotingPower>
                <sharedVotingPower>0</sharedVotingPower>
                <soleDispositivePower>5071940</soleDispositivePower>
                <sharedDispositivePower>0</sharedDispositivePower>
            </reportingPersonBeneficiallyOwnedNumberOfShares>
            <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5071940</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
            <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
            <classPercent>9.2</classPercent>
            <typeOfReportingPerson>IA</typeOfReportingPerson>
        </coverPageHeaderReportingPersonDetails>
        <items>
            <item1>
                <issuerName>SMARTSTOP SELF STORAGE REIT</issuerName>
                <issuerPrincipalExecutiveOfficeAddress>10 TERRACE ROAD, LADERA RANCH, CA, 92694</issuerPrincipalExecutiveOfficeAddress>
            </item1>
            <item2>
                <filingPersonName>T. Rowe Price Associates, Inc.</filingPersonName>
                <principalBusinessOfficeOrResidenceAddress>1307 Point Street, Baltimore, MD 21231</principalBusinessOfficeOrResidenceAddress>
                <citizenship>Maryland</citizenship>
            </item2>
            <item3>
                <notApplicableFlag>N</notApplicableFlag>
                <typeOfPersonFiling>IA</typeOfPersonFiling>
            </item3>
            <item4>
                <amountBeneficiallyOwned>5071940</amountBeneficiallyOwned>
                <classPercent>9.2</classPercent>
                <numberOfSharesPersonHas>
                    <solePowerOrDirectToVote>5063178</solePowerOrDirectToVote>
                    <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
                    <solePowerOrDirectToDispose>5071940</solePowerOrDirectToDispose>
                    <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
                </numberOfSharesPersonHas>
            </item4>
            <item5>
                <notApplicableFlag>Y</notApplicableFlag>
            </item5>
            <item6>
                <notApplicableFlag>Y</notApplicableFlag>
            </item6>
            <item7>
                <notApplicableFlag>Y</notApplicableFlag>
            </item7>
            <item8>
                <notApplicableFlag>Y</notApplicableFlag>
            </item8>
            <item9>
                <notApplicableFlag>Y</notApplicableFlag>
            </item9>
            <item10>
                <notApplicableFlag>N</notApplicableFlag>
                <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. T. Rowe Price Associates, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Associates is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.</certifications>
            </item10>
        </items>
        <signatureInformation>
            <reportingPersonName>T. Rowe Price Associates, Inc.</reportingPersonName>
            <signatureDetails>
                <signature>Ellen York</signature>
                <title>Vice President</title>
                <date>12/05/2025</date>
            </signatureDetails>
        </signatureInformation>
    </formData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
