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  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001883451</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001581280</issuerCik>
      <issuerName>Twist Bioscience Corp</issuerName>
      <secFileNumber>001-38720</secFileNumber>
      <issuerAddress>
        <com:street1>681 GATEWAY BLVD.</com:street1>
        <com:city>SOUTH SAN FRANCISCO</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94080</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>800-719-0671</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Cho Dennis</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>900 Salem Street</com:street1>
          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>3876</noOfUnitsSold>
      <aggregateMarketValue>124756.81</aggregateMarketValue>
      <noOfUnitsOutstanding>60360925</noOfUnitsOutstanding>
      <approxSaleDate>10/06/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>10/01/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>3876</amountOfSecuritiesAcquired>
      <paymentDate>10/01/2025</paymentDate>
      <natureOfPayment>Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Dennis H. Cho</name>
        <address>
          <com:street1>681 Gateway Blvd</com:street1>
          <com:city>South San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/04/2025</saleDate>
      <amountOfSecuritiesSold>785</amountOfSecuritiesSold>
      <grossProceeds>22265.82</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Dennis H. Cho</name>
        <address>
          <com:street1>681 Gateway Blvd</com:street1>
          <com:city>South San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/21/2025</saleDate>
      <amountOfSecuritiesSold>521</amountOfSecuritiesSold>
      <grossProceeds>13527.35</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Dennis H. Cho</name>
        <address>
          <com:street1>681 Gateway Blvd</com:street1>
          <com:city>South San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>09/08/2025</saleDate>
      <amountOfSecuritiesSold>269</amountOfSecuritiesSold>
      <grossProceeds>6929.41</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Dennis H. Cho</name>
        <address>
          <com:street1>681 Gateway Blvd</com:street1>
          <com:city>South San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>09/15/2025</saleDate>
      <amountOfSecuritiesSold>94</amountOfSecuritiesSold>
      <grossProceeds>2380.86</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Dennis H. Cho</name>
        <address>
          <com:street1>681 Gateway Blvd</com:street1>
          <com:city>South San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>09/22/2025</saleDate>
      <amountOfSecuritiesSold>233</amountOfSecuritiesSold>
      <grossProceeds>6421.46</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Dennis H. Cho</name>
        <address>
          <com:street1>681 Gateway Blvd</com:street1>
          <com:city>South San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94080</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/02/2025</saleDate>
      <amountOfSecuritiesSold>124</amountOfSecuritiesSold>
      <grossProceeds>3615.95</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.</remarks>
    <noticeSignature>
      <noticeDate>10/06/2025</noticeDate>
      <signature>/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Dennis H. Cho</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
