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            <filer>
                <filerCredentials>
                    <cik>0001723497</cik>
                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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        <issuerInfo>
            <issuerCik>0001647088</issuerCik>
            <issuerName>WILLSCOT MOBILE MINI HOLDINGS CORP.</issuerName>
            <secFileNumber>001-37552</secFileNumber>
            <issuerAddress>
                <ns2:street1>4646 E Van Buren St., Suite 400</ns2:street1>
                <ns2:city>Phoenix</ns2:city>
                <ns2:stateOrCountry>AZ</ns2:stateOrCountry>
                <ns2:zipCode>85008</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>(480) 894-6311</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>SALLY J. SHANKS</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>38th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>10541</noOfUnitsSold>
            <aggregateMarketValue>496307.17</aggregateMarketValue>
            <noOfUnitsOutstanding>202317982</noOfUnitsOutstanding>
            <approxSaleDate>06/15/2023</approxSaleDate>
            <securitiesExchangeName>NASD</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/05/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>5466</amountOfSecuritiesAcquired>
            <paymentDate>03/05/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/21/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>1121</amountOfSecuritiesAcquired>
            <paymentDate>03/21/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/20/2022</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2883</amountOfSecuritiesAcquired>
            <paymentDate>03/20/2022</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/01/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>429</amountOfSecuritiesAcquired>
            <paymentDate>03/01/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>03/03/2023</acquiredDate>
            <natureOfAcquisitionTransaction>Restricted Stock</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>642</amountOfSecuritiesAcquired>
            <paymentDate>03/03/2023</paymentDate>
            <natureOfPayment>Not Applicable</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>06/15/2023</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Sally Jane Shanks</signature>
        </noticeSignature>
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144
0001723497
XXXXXXXX
LIVE
0001647088
WILLSCOT MOBILE MINI HOLDINGS CORP.
001-37552
4646 E Van Buren St., Suite 400
Phoenix
AZ
85008
(480) 894-6311
SALLY J. SHANKS
Officer
Common
Morgan Stanley Smith Barney LLC
1 New York Plaza
38th Floor
New York
NY
10004
10541
496307.17
202317982
06/15/2023
NASD
Common
03/05/2023
Restricted Stock
Issuer
N
5466
03/05/2023
Not Applicable
Common
03/21/2023
Restricted Stock
Issuer
N
1121
03/21/2023
Not Applicable
Common
03/20/2022
Restricted Stock
Issuer
N
2883
03/20/2022
Not Applicable
Common
03/01/2023
Restricted Stock
Issuer
N
429
03/01/2023
Not Applicable
Common
03/03/2023
Restricted Stock
Issuer
N
642
03/03/2023
Not Applicable
Y
06/15/2023
/s/ Sally Jane Shanks