<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
<headerData>
<submissionType>144</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0001278949</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>


</filerInfo>
</headerData>
<formData>
<issuerInfo>
<issuerCik>0001569994</issuerCik>
<issuerName>Waterstone Financial, Inc.</issuerName>
<secFileNumber>001-36271</secFileNumber>
<issuerAddress>
<com:street1>11200 West Plank Ct.</com:street1>
<com:city>Wauwatosa</com:city>
<com:stateOrCountry>WI</com:stateOrCountry>
<com:zipCode>53226</com:zipCode>
</issuerAddress>
<issuerContactPhone>(414) 761-1000</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Rappe, Kristine A. (WSBF)</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
<relationshipsToIssuer>
<relationshipToIssuer>Director</relationshipToIssuer>
</relationshipsToIssuer>
</issuerInfo>
<securitiesInformation>
<securitiesClassTitle>Common</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>Vanguard Brokerage Services</name>
<address>
<com:street1>PO BOX 982901</com:street1>
<com:city>El Paso</com:city>
<com:stateOrCountry>TX</com:stateOrCountry>
<com:zipCode>79998-2901</com:zipCode>
</address>
</brokerOrMarketmakerDetails>
<noOfUnitsSold>14305</noOfUnitsSold>
<aggregateMarketValue>182103.00</aggregateMarketValue>
<noOfUnitsOutstanding>19076000</noOfUnitsOutstanding>
<approxSaleDate>05/29/2025</approxSaleDate>
<securitiesExchangeName>Nasdaq</securitiesExchangeName>
</securitiesInformation>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>05/14/2014</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>2358</amountOfSecuritiesAcquired>
<paymentDate>05/14/2014</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>05/14/2014</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>2360</amountOfSecuritiesAcquired>
<paymentDate>05/14/2014</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>06/03/2014</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>4600</amountOfSecuritiesAcquired>
<paymentDate>06/03/2014</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>11/18/2014</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>2616</amountOfSecuritiesAcquired>
<paymentDate>11/18/2014</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>11/18/2014</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>1384</amountOfSecuritiesAcquired>
<paymentDate>11/18/2014</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>08/02/2019</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>95</amountOfSecuritiesAcquired>
<paymentDate>08/02/2019</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>11/01/2019</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>86</amountOfSecuritiesAcquired>
<paymentDate>11/01/2019</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>02/03/2020</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>93</amountOfSecuritiesAcquired>
<paymentDate>02/03/2020</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>04/02/2020</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>486</amountOfSecuritiesAcquired>
<paymentDate>04/02/2020</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>05/01/2020</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>117</amountOfSecuritiesAcquired>
<paymentDate>05/01/2020</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common</securitiesClassTitle>
<acquiredDate>08/03/2020</acquiredDate>
<natureOfAcquisitionTransaction>Open Market</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>N/A</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>110</amountOfSecuritiesAcquired>
<paymentDate>08/03/2020</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
<noticeSignature>
<noticeDate>05/29/2025</noticeDate>
<signature>/s/ William F. Bruss, Attorney -In-Fact</signature>
</noticeSignature>
</formData>
</edgarSubmission>
