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    <issuerInfo>
      <issuerCik>0001541119</issuerCik>
      <issuerName>Sound Financial Bancorp, Inc.</issuerName>
      <secFileNumber>001-35633</secFileNumber>
      <issuerAddress>
        <com:street1>2400 3RD AVENUE</com:street1>
        <com:street2>SUITE 150</com:street2>
        <com:city>SEATTLE</com:city>
        <com:stateOrCountry>WA</com:stateOrCountry>
        <com:zipCode>98121</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>206-448-0884</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Myers Tyler K</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
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    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corporation</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>1600</noOfUnitsSold>
      <aggregateMarketValue>86240.00</aggregateMarketValue>
      <noOfUnitsOutstanding>2564095</noOfUnitsOutstanding>
      <approxSaleDate>09/06/2024</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>01/27/2009</acquiredDate>
      <natureOfAcquisitionTransaction>RSA</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1600</amountOfSecuritiesAcquired>
      <paymentDate>01/27/2009</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>09/06/2024</noticeDate>
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144
0001410555
XXXXXXXX
LIVE
0001541119
Sound Financial Bancorp, Inc.
001-35633
2400 3RD AVENUE
SUITE 150
SEATTLE
WA
98121
206-448-0884
Myers Tyler K
Director
Common
Charles Schwab Corporation
3000 Schwab Way
Westlake
TX
76262
1600
86240.00
2564095
09/06/2024
NASDAQ
Common
01/27/2009
RSA
Issuer
N
1600
01/27/2009
Equity Compensation
Y
09/06/2024
TYLER KENT MYERS