<SEC-DOCUMENT>0001647088-24-000098.txt : 20240611
<SEC-HEADER>0001647088-24-000098.hdr.sgml : 20240611
<ACCEPTANCE-DATETIME>20240611183547
ACCESSION NUMBER:		0001647088-24-000098
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240607
FILED AS OF DATE:		20240611
DATE AS OF CHANGE:		20240611

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Olsson Erik
		CENTRAL INDEX KEY:			0001400231
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37552
		FILM NUMBER:		241037064

	MAIL ADDRESS:	
		STREET 1:		C/O RSC HOLDINGS INC.
		STREET 2:		6929 E. GREENWAY PARKWAY
		CITY:			SCOTTSDALE
		STATE:			AZ
		ZIP:			85254

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WillScot Mobile Mini Holdings Corp.
		CENTRAL INDEX KEY:			0001647088
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MISCELLANEOUS EQUIPMENT RENTAL & LEASING [7350]
		ORGANIZATION NAME:           	07 Trade & Services
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4646 E. VAN BUREN STREET
		STREET 2:		SUITE 400
		CITY:			PHOENIX
		STATE:			AZ
		ZIP:			85008
		BUSINESS PHONE:		480-894-6311

	MAIL ADDRESS:	
		STREET 1:		4646 E. VAN BUREN STREET
		STREET 2:		SUITE 400
		CITY:			PHOENIX
		STATE:			AZ
		ZIP:			85008

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WillScot Corp
		DATE OF NAME CHANGE:	20171130

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Double Eagle Acquisition Corp.
		DATE OF NAME CHANGE:	20150814

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Double Eagle Acquisitions Corp.
		DATE OF NAME CHANGE:	20150706
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1718145338.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-06-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001647088</issuerCik>
        <issuerName>WillScot Mobile Mini Holdings Corp.</issuerName>
        <issuerTradingSymbol>WSC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001400231</rptOwnerCik>
            <rptOwnerName>Olsson Erik</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4646 E. VAN BUREN STREET, SUITE 400</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PHOENIX</rptOwnerCity>
            <rptOwnerState>AZ</rptOwnerState>
            <rptOwnerZipCode>85008</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock, par value $0.0001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2024-06-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4843</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>621306</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock granted pursuant to the WillScot Mobile Mini Holdings Corp. 2020 Incentive Award Plan and a Restricted Stock Award Agreement between the Issuer and Mr. Olsson. These shares comprise part of the Issuer's annual compensation program for non-executive directors and, subject to the terms and conditions of such plan and award agreement, the restrictions on these shares lapse in full one year from the grant date.</footnote>
        <footnote id="F2">On March 26, 2024, the Reporting Person transferred 100,000 shares to the Olsson Living Trust, of which the Reporting Person is the sole trustee and beneficiary, in transactions exempt from reporting under Rule 16a-13.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Hezron T. Lopez as Attorney-in-Fact</signatureName>
        <signatureDate>2024-06-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
