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      <issuerName>CTS CORP</issuerName>
      <secFileNumber>001-04639</secFileNumber>
      <issuerAddress>
        <com:street1>4925 INDIANA AVENUE</com:street1>
        <com:city>LISLE</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60532</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6305778800</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>O'SULLIVAN KIERAN M</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
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    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>THE 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>80000</noOfUnitsSold>
      <aggregateMarketValue>4160000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>30115545</noOfUnitsOutstanding>
      <approxSaleDate>12/02/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>01/01/2015</acquiredDate>
      <natureOfAcquisitionTransaction>ANNUAL AWARDS</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>ISSUER</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>80000</amountOfSecuritiesAcquired>
      <paymentDate>01/01/2015</paymentDate>
      <natureOfPayment>NA</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>FULL ACCOUNT TITLE: KIERAN O'SULLIVAN TTEE THE KIERAN O'SULLIVAN DECLARATION OF TRUST. SHARES ACQUIRED VIA FOLLOWING DATE RANGE: 01/01/15 TO 2/11/22</remarks>
    <noticeSignature>
      <noticeDate>12/02/2024</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>08/27/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>KIERAN O'SULLIVAN</signature>
    </noticeSignature>
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144
0001566534
XXXXXXXX
LIVE
0000026058
CTS CORP
001-04639
4925 INDIANA AVENUE
LISLE
IL
60532
6305778800
O'SULLIVAN KIERAN M
Officer
COMMON
THE CHARLES SCHWAB CORPORATION
3000 Schwab Way
Westlake
TX
76262
80000
4160000.00
30115545
12/02/2024
NYSE
COMMON
01/01/2015
ANNUAL AWARDS
ISSUER
N
80000
01/01/2015
NA
Y
FULL ACCOUNT TITLE: KIERAN O'SULLIVAN TTEE THE KIERAN O'SULLIVAN DECLARATION OF TRUST. SHARES ACQUIRED VIA FOLLOWING DATE RANGE: 01/01/15 TO 2/11/22
12/02/2024
08/27/2024
KIERAN O'SULLIVAN