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post-transaction Ms. Bush beneficially owns or has a right to acquire 1,614,921 shares of common stock."}],"balance_after":281588,"source":{"system":"sec-edgar","filing":"0001209191-18-059489","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1497253/000120919118059489/doc4.xml","form_type":"4"}},{"id":3841794,"issuer":{"id":8386,"kind":"organization","name":"VivoSim Labs, INC."},"owners":[{"id":10003,"kind":"person","name":"Bush Jennifer","position":1,"cik":"0001621152","reported_name":"Bush Jennifer","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Secretary"}}],"security":"Stock Option (Right to 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post-transaction Ms. Bush beneficially owns or has a right to acquire 1,626,836 shares of common stock."}],"balance_after":293503,"source":{"system":"sec-edgar","filing":"0001209191-18-047195","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1497253/000120919118047195/doc4.xml","form_type":"4"}},{"id":3915487,"issuer":{"id":8386,"kind":"organization","name":"VivoSim Labs, INC."},"owners":[{"id":10003,"kind":"person","name":"Bush Jennifer","position":1,"cik":"0001621152","reported_name":"Bush Jennifer","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Secretary"}}],"security":"Stock Option (Right to 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post-transaction Ms. Bush beneficially owns or has a right to acquire 610,655 shares of common stock."}],"balance_after":235655,"source":{"system":"sec-edgar","filing":"0001209191-18-031104","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1497253/000120919118031104/doc4.xml","form_type":"4"}},{"id":4047627,"issuer":{"id":8386,"kind":"organization","name":"VivoSim Labs, INC."},"owners":[{"id":10003,"kind":"person","name":"Bush Jennifer","position":1,"cik":"0001621152","reported_name":"Bush Jennifer","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel & Secretary"}}],"security":"Common Stock","published_at":"2018-02-20T13:50:20.000Z","date":"2018-02-16","kind":"tax_withholding","acquired":false,"shares":10365,"price":1.0855,"value":11251.2075,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the mandatory sale of shares to satisfy the Reporting Person's tax withholding obligations, in connection with the partial vesting and settlement of restricted stock units granted in July 2016 and June 2017, pursuant to the Reporting Person's agreement with the Issuer."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This number does not include 375,000 shares of common stock underlying outstanding options held by Ms. Bush; 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