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Full information regarding the number of shares sold at each separate price can be furnished to the Issuer, any security holder of the Issuer, or the SEC staff upon request."}],"balance_after":22966,"source":{"system":"sec-edgar","filing":"0000950170-23-066217","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023066217/ownership.xml","form_type":"4"}},{"id":1729329,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-11-28T01:48:47.000Z","date":"2023-11-22","kind":"sale","planned":false,"acquired":false,"shares":110,"price":35.9873,"value":3958.603,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of performance restricted stock units, and does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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Full information regarding the number of shares sold at each separate price can be furnished to the Issuer, any security holder of the Issuer, or the SEC staff upon request."}],"balance_after":23196,"source":{"system":"sec-edgar","filing":"0000950170-23-066217","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023066217/ownership.xml","form_type":"4"}},{"id":1730737,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock 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Full information regarding the number of shares sold at each separate price can be furnished to the Issuer, any security holder of the Issuer, or the SEC staff upon request."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total number of shares of common stock is adjusted for a 1-for-50 reverse stock split effected by the Issuer on November 3, 2023."}],"balance_after":23340,"source":{"system":"sec-edgar","filing":"0000950170-23-065866","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023065866/ownership.xml","form_type":"4"}},{"id":1730734,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-11-22T21:05:33.000Z","date":"2023-11-10","kind":"sale","planned":false,"acquired":false,"shares":191,"price":44.0134,"value":8406.5594,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs, and does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. 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Full information regarding the number of shares sold at each separate price can be furnished to the Issuer, any security holder of the Issuer, or the SEC staff upon request."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Total number of shares of common stock is adjusted for a 1-for-50 reverse stock split effected by the Issuer on November 3, 2023."}],"balance_after":23407,"source":{"system":"sec-edgar","filing":"0000950170-23-065866","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023065866/ownership.xml","form_type":"4"}},{"id":1730733,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-11-22T21:05:33.000Z","date":"2023-11-10","kind":"sale","planned":false,"acquired":false,"shares":225,"price":43.172,"value":9713.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs, and does not represent a discretionary trade by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. 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Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":636801,"source":{"system":"sec-edgar","filing":"0001127602-23-023081","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223023081/form4.xml","form_type":"4"}},{"id":1801503,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-18T12:01:26.000Z","date":"2023-08-17","kind":"sale","planned":true,"acquired":false,"shares":2733,"price":0.63,"value":1721.79,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.611 to $0.631. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":639666,"source":{"system":"sec-edgar","filing":"0001127602-23-022901","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022901/form4.xml","form_type":"4"}},{"id":1801502,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-18T12:01:26.000Z","date":"2023-08-16","kind":"sale","planned":true,"acquired":false,"shares":2895,"price":0.65,"value":1881.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.631 to $0.680. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":642399,"source":{"system":"sec-edgar","filing":"0001127602-23-022901","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022901/form4.xml","form_type":"4"}},{"id":1805100,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-16T12:59:22.000Z","date":"2023-08-15","kind":"sale","planned":true,"acquired":false,"shares":2629,"price":0.67,"value":1761.43,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.636 to $0.712. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":645294,"source":{"system":"sec-edgar","filing":"0001127602-23-022636","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022636/form4.xml","form_type":"4"}},{"id":1805099,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-16T12:59:22.000Z","date":"2023-08-14","kind":"sale","planned":true,"acquired":false,"shares":2881,"price":0.63,"value":1815.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.621 to $0.652. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":647923,"source":{"system":"sec-edgar","filing":"0001127602-23-022636","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022636/form4.xml","form_type":"4"}},{"id":1808153,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-14T20:07:50.000Z","date":"2023-08-11","kind":"sale","planned":true,"acquired":false,"shares":2733,"price":0.67,"value":1831.11,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.636 to $0.690. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":650804,"source":{"system":"sec-edgar","filing":"0001127602-23-022479","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022479/form4.xml","form_type":"4"}},{"id":1808152,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-14T20:07:50.000Z","date":"2023-08-10","kind":"sale","planned":true,"acquired":false,"shares":2790,"price":0.68,"value":1897.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.642 to $0.695. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":653537,"source":{"system":"sec-edgar","filing":"0001127602-23-022479","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022479/form4.xml","form_type":"4"}},{"id":1810600,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-10T20:04:27.000Z","date":"2023-08-09","kind":"sale","planned":true,"acquired":false,"shares":2798,"price":0.67,"value":1874.66,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.640 to $0.710. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":656327,"source":{"system":"sec-edgar","filing":"0001127602-23-022281","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022281/form4.xml","form_type":"4"}},{"id":1810599,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-10T20:04:27.000Z","date":"2023-08-08","kind":"sale","planned":true,"acquired":false,"shares":2810,"price":0.69,"value":1938.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.661 to $0.710. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":659125,"source":{"system":"sec-edgar","filing":"0001127602-23-022281","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022281/form4.xml","form_type":"4"}},{"id":1811655,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-09T12:51:26.000Z","date":"2023-08-07","kind":"sale","planned":true,"acquired":false,"shares":2857,"price":0.68,"value":1942.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.651 to $0.695. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":661935,"source":{"system":"sec-edgar","filing":"0001127602-23-022219","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022219/form4.xml","form_type":"4"}},{"id":1811654,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-09T12:51:26.000Z","date":"2023-08-04","kind":"sale","planned":true,"acquired":false,"shares":2550,"price":0.69,"value":1759.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.667 to $0.726. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":664792,"source":{"system":"sec-edgar","filing":"0001127602-23-022219","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022219/form4.xml","form_type":"4"}},{"id":1814647,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-04T20:10:31.000Z","date":"2023-08-03","kind":"sale","planned":true,"acquired":false,"shares":2679,"price":0.59,"value":1580.61,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.555 to $0.598. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":667342,"source":{"system":"sec-edgar","filing":"0001127602-23-022010","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022010/form4.xml","form_type":"4"}},{"id":1814646,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-04T20:10:31.000Z","date":"2023-08-02","kind":"sale","planned":true,"acquired":false,"shares":2587,"price":0.52,"value":1345.24,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.480 to $0.543. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":670021,"source":{"system":"sec-edgar","filing":"0001127602-23-022010","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223022010/form4.xml","form_type":"4"}},{"id":1817536,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-02T20:36:57.000Z","date":"2023-08-01","kind":"sale","planned":true,"acquired":false,"shares":2799,"price":0.49,"value":1371.51,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.465 to $0.504. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":672608,"source":{"system":"sec-edgar","filing":"0001127602-23-021846","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223021846/form4.xml","form_type":"4"}},{"id":1817535,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-02T20:36:57.000Z","date":"2023-07-31","kind":"sale","planned":true,"acquired":false,"shares":2676,"price":0.5,"value":1338.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.482 to $0.515. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":675407,"source":{"system":"sec-edgar","filing":"0001127602-23-021846","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223021846/form4.xml","form_type":"4"}},{"id":1820229,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-31T20:05:52.000Z","date":"2023-07-28","kind":"sale","planned":true,"acquired":false,"shares":2647,"price":0.47,"value":1244.09,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.46 to $0.49. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":678083,"source":{"system":"sec-edgar","filing":"0001127602-23-021562","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223021562/form4.xml","form_type":"4"}},{"id":1820228,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-31T20:05:52.000Z","date":"2023-07-27","kind":"sale","planned":true,"acquired":false,"shares":2791,"price":0.51,"value":1423.41,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.504 to $0.541. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":680730,"source":{"system":"sec-edgar","filing":"0001127602-23-021562","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223021562/form4.xml","form_type":"4"}},{"id":1822028,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-27T20:15:35.000Z","date":"2023-07-26","kind":"sale","planned":true,"acquired":false,"shares":2609,"price":0.52,"value":1356.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.511 to $0.546. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":683521,"source":{"system":"sec-edgar","filing":"0000950170-23-035157","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023035157/ownership.xml","form_type":"4"}},{"id":1822027,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-27T20:15:35.000Z","date":"2023-07-25","kind":"sale","planned":true,"acquired":false,"shares":2803,"price":0.5,"value":1401.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.491 to $0.512. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":686130,"source":{"system":"sec-edgar","filing":"0000950170-23-035157","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023035157/ownership.xml","form_type":"4"}},{"id":1823382,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-25T20:56:19.000Z","date":"2023-07-24","kind":"sale","planned":true,"acquired":false,"shares":2887,"price":0.54,"value":1558.98,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.534 to $0.561. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":688933,"source":{"system":"sec-edgar","filing":"0000950170-23-034474","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023034474/ownership.xml","form_type":"4"}},{"id":1823381,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-25T20:56:19.000Z","date":"2023-07-21","kind":"sale","planned":true,"acquired":false,"shares":2663,"price":0.61,"value":1624.43,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.604 to $0.619. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":691820,"source":{"system":"sec-edgar","filing":"0000950170-23-034474","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000095017023034474/ownership.xml","form_type":"4"}},{"id":1824648,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-21T20:06:04.000Z","date":"2023-07-20","kind":"sale","planned":true,"acquired":false,"shares":2710,"price":0.64,"value":1734.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.63 to $0.65. The price reported in this column reflects the weighted average sales price. 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The price reported in this column reflects the weighted average sales price. 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The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":699839,"source":{"system":"sec-edgar","filing":"0001127602-23-021000","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223021000/form4.xml","form_type":"4"}},{"id":1826596,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-19T20:14:39.000Z","date":"2023-07-17","kind":"sale","planned":true,"acquired":false,"shares":2775,"price":0.68,"value":1887.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.59 to $0.72. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":702807,"source":{"system":"sec-edgar","filing":"0001127602-23-021000","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223021000/form4.xml","form_type":"4"}},{"id":1828428,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-17T20:22:21.000Z","date":"2023-07-14","kind":"sale","planned":true,"acquired":false,"shares":1815,"price":0.59,"value":1070.85,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.58 to $0.63. 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The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":707397,"source":{"system":"sec-edgar","filing":"0001127602-23-020818","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223020818/form4.xml","form_type":"4"}},{"id":1830015,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-13T20:14:00.000Z","date":"2023-07-12","kind":"sale","planned":true,"acquired":false,"shares":2649,"price":0.39,"value":1033.11,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.38 to $0.41. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":710043,"source":{"system":"sec-edgar","filing":"0001127602-23-020658","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223020658/form4.xml","form_type":"4"}},{"id":1830014,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-13T20:14:00.000Z","date":"2023-07-11","kind":"sale","planned":true,"acquired":false,"shares":2731,"price":0.37,"value":1010.47,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.37 to $0.38. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":712692,"source":{"system":"sec-edgar","filing":"0001127602-23-020658","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223020658/form4.xml","form_type":"4"}},{"id":1830750,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-07-13T01:22:49.000Z","date":"2023-07-10","kind":"sale","planned":true,"acquired":false,"shares":2591,"price":0.38,"value":984.58,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a portion of the shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units pursuant to a Rule 10b5-1 trading plan entered into on March 22, 2022 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $0.37 to $0.38. The price reported in this column reflects the weighted average sales price. 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The price reported in this column reflects the weighted average sales price. 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Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":315168,"source":{"system":"sec-edgar","filing":"0001127602-21-008932","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760221008932/form4.xml","form_type":"4"}},{"id":2818659,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-03-03T01:01:32.000Z","date":"2021-03-01","kind":"sale","acquired":false,"shares":1079,"price":47.8386,"value":51617.8494,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 15, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $47.17 to $48.16. The price reported in this column reflects the weighted average sales price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares sold at each price."}],"balance_after":316423,"source":{"system":"sec-edgar","filing":"0001127602-21-008932","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760221008932/form4.xml","form_type":"4"}},{"id":2818658,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":89987,"kind":"person","name":"Lucchino David L.","position":1,"cik":"0001785288","reported_name":"Lucchino David L.","relationship":{"director":true,"officer":true,"officer_title":"President and CEO"}}],"security":"Common 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