{"transactions":[{"id":2043443,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Restricted Stock Unit","published_at":"2023-01-27T21:38:46.000Z","date":"2023-01-26","kind":"grant","acquired":true,"shares":105000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units will vest in four equal annual installments beginning on January 26, 2024."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units will vest in four equal annual installments beginning on January 26, 2024."}],"balance_after":105000,"derivative":{"underlying":"Common Stock","underlying_shares":105000},"source":{"system":"sec-edgar","filing":"0001127602-23-002457","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760223002457/form4.xml","form_type":"4"}},{"id":2177873,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Stock Option","published_at":"2022-08-19T20:01:19.000Z","date":"2022-08-17","kind":"disposition_to_issuer","acquired":false,"shares":90000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The transaction reported herein reflects a one-time stock option repricing that became effective on August 17, 2022 and is being reported in this manner solely to comply with the technical reporting requirements under Section 16(a) of the Securities Exchange Act of 1934, as amended. There have been no other changes to the terms of these options."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests and becomes exercisable as to 25% on January 19, 2022, and in equal monthly installments on the same day of each month thereafter and will be fully vested and exercisable on January 19, 2025."}],"balance_after":0,"derivative":{"exercise_price":38.99,"expiration_date":"2031-01-28","underlying":"Common Stock","underlying_shares":90000},"source":{"system":"sec-edgar","filing":"0001127602-22-021369","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222021369/form4.xml","form_type":"4"}},{"id":2177872,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Stock Option","published_at":"2022-08-19T20:01:19.000Z","date":"2022-08-17","kind":"grant","acquired":true,"shares":90000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The transaction reported herein reflects a one-time stock option repricing that became effective on August 17, 2022 and is being reported in this manner solely to comply with the technical reporting requirements under Section 16(a) of the Securities Exchange Act of 1934, as amended. There have been no other changes to the terms of these options."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests and becomes exercisable as to 25% on January 19, 2022, and in equal monthly installments on the same day of each month thereafter and will be fully vested and exercisable on January 19, 2025."}],"balance_after":90000,"derivative":{"exercise_price":2.14,"expiration_date":"2031-01-28","underlying":"Common Stock","underlying_shares":90000},"source":{"system":"sec-edgar","filing":"0001127602-22-021369","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222021369/form4.xml","form_type":"4"}},{"id":2210488,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Restricted Stock Unit","published_at":"2022-07-07T20:50:31.000Z","date":"2022-07-05","kind":"exercise","acquired":false,"shares":17500,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units will vest as to 50% on February 14, 2022 and 50% on July 4, 2022."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":17500},"source":{"system":"sec-edgar","filing":"0001127602-22-019049","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222019049/form4.xml","form_type":"4"}},{"id":2210487,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-07-07T20:50:31.000Z","date":"2022-07-06","kind":"sale","acquired":false,"shares":6569,"price":1.52,"value":9984.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the restricted stock units and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $1.49 to $1.56. 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":38340,"source":{"system":"sec-edgar","filing":"0001127602-22-019049","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222019049/form4.xml","form_type":"4"}},{"id":2210486,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-07-07T20:50:31.000Z","date":"2022-07-05","kind":"exercise","acquired":true,"shares":17500,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 4638 shares acquired under the Issuer's Employee Stock Purchase Plan on June 30, 2022."}],"balance_after":44909,"source":{"system":"sec-edgar","filing":"0001127602-22-019049","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222019049/form4.xml","form_type":"4"}},{"id":2377178,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-02-23T21:34:20.000Z","date":"2022-02-22","kind":"sale","acquired":false,"shares":1584,"price":3.534,"value":5597.856,"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 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 $3.40 to $3.73. 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":22771,"source":{"system":"sec-edgar","filing":"0001127602-22-006314","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222006314/form4.xml","form_type":"4"}},{"id":2377177,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-02-23T21:34:20.000Z","date":"2022-02-18","kind":"sale","acquired":false,"shares":1411,"price":3.872,"value":5463.392,"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 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 $3.80 to $3.95. 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":24355,"source":{"system":"sec-edgar","filing":"0001127602-22-006314","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222006314/form4.xml","form_type":"4"}},{"id":2384691,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Restricted Stock Unit","published_at":"2022-02-18T21:10:38.000Z","date":"2022-02-17","kind":"grant","acquired":true,"shares":150000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units will fully vest on July 4, 2023."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The restricted stock units will fully vest on July 4, 2023."}],"balance_after":150000,"derivative":{"underlying":"Common Stock","underlying_shares":150000},"source":{"system":"sec-edgar","filing":"0001127602-22-005747","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222005747/form4.xml","form_type":"4"}},{"id":2384690,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-02-18T21:10:38.000Z","date":"2022-02-17","kind":"sale","acquired":false,"shares":1303,"price":4.196,"value":5467.388,"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 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 $4.00 to $4.48. 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":25766,"source":{"system":"sec-edgar","filing":"0001127602-22-005747","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222005747/form4.xml","form_type":"4"}},{"id":2384689,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-02-18T21:10:38.000Z","date":"2022-02-16","kind":"sale","acquired":false,"shares":1233,"price":4.429,"value":5460.957,"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 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 $4.29 to $4.54. 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":27069,"source":{"system":"sec-edgar","filing":"0001127602-22-005747","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222005747/form4.xml","form_type":"4"}},{"id":2391232,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Restricted Stock Unit","published_at":"2022-02-16T22:04:09.000Z","date":"2022-02-14","kind":"exercise","acquired":false,"shares":17500,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The restricted stock units will vest as to 50% on February 14, 2022 and 50% on July 4, 2022."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of Issuer common stock."}],"balance_after":17500,"derivative":{"underlying":"Common Stock","underlying_shares":17500},"source":{"system":"sec-edgar","filing":"0001127602-22-005334","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222005334/form4.xml","form_type":"4"}},{"id":2391231,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-02-16T22:04:09.000Z","date":"2022-02-15","kind":"sale","acquired":false,"shares":1261,"price":4.331,"value":5461.391,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","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 and does not represent discretionary trades by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades through a broker-dealer at prices ranging from $4.28 to $4.40. 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":28302,"source":{"system":"sec-edgar","filing":"0001127602-22-005334","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1703647/000112760222005334/form4.xml","form_type":"4"}},{"id":2391230,"issuer":{"id":6388,"kind":"organization","name":"Korro Bio, Inc.","symbol":"KRRO"},"owners":[{"id":117580,"kind":"person","name":"McCubbin Quentin","position":1,"cik":"0001842009","reported_name":"McCubbin Quentin","relationship":{"officer":true,"officer_title":"Chief Manufacturing Officer"}}],"security":"Common Stock","published_at":"2022-02-16T22:04:09.000Z","date":"2022-02-14","kind":"exercise","acquired":true,"shares":17500,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each 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