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    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001695904</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000030305</issuerCik>
      <issuerName>DUCOMMUN INC /DE/</issuerName>
      <secFileNumber>001-08174</secFileNumber>
      <issuerAddress>
        <com:street1>600 ANTON BOULEVARD</com:street1>
        <com:street2>SUITE 1100</com:street2>
        <com:city>COSTA MESA</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>92626</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>657-335-3665</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Oswald Stephen G</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corp</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>1200</noOfUnitsSold>
      <aggregateMarketValue>80028.00</aggregateMarketValue>
      <noOfUnitsOutstanding>14748194</noOfUnitsOutstanding>
      <approxSaleDate>09/20/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>03/19/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Equity Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>1200</amountOfSecuritiesAcquired>
      <paymentDate>03/19/2021</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Stephen G. Oswald</name>
        <address>
          <com:street1>600 Anton Boulevard</com:street1>
          <com:street2>Suite 1100</com:street2>
          <com:city>Costa Mesa</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>92626</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>06/21/2024</saleDate>
      <amountOfSecuritiesSold>2000</amountOfSecuritiesSold>
      <grossProceeds>116466.95</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Account Title: Stephen F. Oswald Revocable Trust U/A DTD 01/27/2016 Stephen G. Oswald as Trustee</remarks>
    <noticeSignature>
      <noticeDate>09/20/2024</noticeDate>
      <signature>Stephen G. Oswald</signature>
    </noticeSignature>
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144
0001695904
XXXXXXXX
LIVE
0000030305
DUCOMMUN INC /DE/
001-08174
600 ANTON BOULEVARD
SUITE 1100
COSTA MESA
CA
92626
657-335-3665
Oswald Stephen G
Officer
Director
Common
Charles Schwab Corp
3000 Schwab Way
Westlake
TX
76262
1200
80028.00
14748194
09/20/2024
NYSE
Common
03/19/2021
Equity Compensation
Issuer
N
1200
03/19/2021
Equity Compensation
N
Stephen G. Oswald
600 Anton Boulevard
Suite 1100
Costa Mesa
CA
92626
Common
06/21/2024
2000
116466.95
Account Title: Stephen F. Oswald Revocable Trust U/A DTD 01/27/2016 Stephen G. Oswald as Trustee
09/20/2024
Stephen G. Oswald