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          <com:stateOrCountry>MA</com:stateOrCountry>
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        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Lucchino David L.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
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          <address>
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            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
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        <paymentDate>11/06/2023</paymentDate>
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          <name>David Lucchino</name>
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        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
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            <com:zipCode>02139</com:zipCode>
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        <securitiesClassTitle>Common</securitiesClassTitle>
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            <com:zipCode>02139</com:zipCode>
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        <grossProceeds>1710.04</grossProceeds>
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          <name>David Lucchino</name>
          <address>
            <com:street1>One Kendall Square Building 600-700</com:street1>
            <com:street2>Suite 6-401</com:street2>
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            <com:stateOrCountry>MA</com:stateOrCountry>
            <com:zipCode>02139</com:zipCode>
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        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>08/18/2023</saleDate>
        <amountOfSecuritiesSold>2865</amountOfSecuritiesSold>
        <grossProceeds>1708.40</grossProceeds>
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        <grossProceeds>1534.31</grossProceeds>
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      <noticeSignature>
        <noticeDate>11/13/2023</noticeDate>
        <signature>/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David L. Lucchino</signature>
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text: 144
  0001785288
  XXXXXXXX
  LIVE
  0001703647
  Korro Bio, Inc.
  001-39062
  ONE KENDALL SQUARE. BUILDING 600-700
  SUITE 6-401
  CAMBRIDGE
  MA
  02139
  617-468-1900
  Lucchino David L.
  Former Officer and Director
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  968
  40631.80
  36926285
  11/10/2023
  NASDAQ
  Common
  11/06/2023
  Restricted Stock Vesting
  Issuer
  N
  968
  11/06/2023
  Compensation
  N
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/10/2023
  2790
  1895.53
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/11/2023
  2733
  1826.46
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/14/2023
  2881
  1819.35
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/15/2023
  2629
  1769.58
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/16/2023
  2895
  1868.72
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/17/2023
  2733
  1710.04
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/18/2023
  2865
  1708.40
  David Lucchino
  One Kendall Square Building 600-700
  Suite 6-401
  Cambridge
  MA
  02139
  Common
  08/21/2023
  3057
  1534.31
  11/13/2023
  /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David L. Lucchino