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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0000356037</issuerCik>
      <issuerName>CSP INC /MA/</issuerName>
      <secFileNumber>000-10843</secFileNumber>
      <issuerAddress>
        <com:street1>175 CABOT STREET</com:street1>
        <com:street2>SUITE 210</com:street2>
        <com:city>LOWELL</com:city>
        <com:stateOrCountry>MA</com:stateOrCountry>
        <com:zipCode>01854</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>9789545038</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Blackmon Raymond Charles JR</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co.</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>38500</noOfUnitsSold>
      <aggregateMarketValue>756525.00</aggregateMarketValue>
      <noOfUnitsOutstanding>9882613</noOfUnitsOutstanding>
      <approxSaleDate>02/12/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>07/22/2014</acquiredDate>
      <natureOfAcquisitionTransaction>Equity Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>38500</amountOfSecuritiesAcquired>
      <paymentDate>07/22/2014</paymentDate>
      <natureOfPayment>Services Rendered</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Securities to be sold were equity grants to members of the board of directors acquired between 07/22/14-2/13/18</remarks>
    <noticeSignature>
      <noticeDate>02/12/2025</noticeDate>
      <signature>Raymond C Blackmon</signature>
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144
0001582548
XXXXXXXX
LIVE
0000356037
CSP INC /MA/
000-10843
175 CABOT STREET
SUITE 210
LOWELL
MA
01854
9789545038
Blackmon Raymond Charles JR
Director
Common Stock
Charles Schwab & Co.
3000 Schwab Way
Westlake
TX
76262
38500
756525.00
9882613
02/12/2025
NASDAQ
Common Stock
07/22/2014
Equity Grant
Issuer
N
38500
07/22/2014
Services Rendered
Y
Securities to be sold were equity grants to members of the board of directors acquired between 07/22/14-2/13/18
02/12/2025
Raymond C Blackmon