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The shares shall vest as follows: (i) 50% shall vest in 48 equal monthly installments beginning on March 12, 2020, (ii) 25% shall vest on completion of a specified milestone related to cobomarsen development and (iii) 25% shall vest on completion of a specified milestone related to MRG-229 development, provided that at the relevant vesting dates the Reporting Person's continuous service to the Issuer has not been terminated as defined in and as determined under the Plan. The shares underlying the option are subject to accelerated vesting upon the occurrence of specified events including a change of control of the Issuer and the Reporting Person's termination. 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None of the shares of common stock received upon exercise of the option were sold by the Reporting Person and all such shares are subject to a lock-up agreement between the Reporting Person and certain underwriters."}],"balance_after":265646,"source":{"system":"sec-edgar","filing":"0001209191-18-010428","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1693127/000120919118010428/doc4.xml","form_type":"4"}},{"id":4079376,"issuer":{"id":4316,"kind":"organization","name":"Viridian Therapeutics, Inc.\\DE"},"owners":[{"id":143725,"kind":"person","name":"Marshall William Stuart","position":1,"cik":"0001693127","reported_name":"Marshall William Stuart","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Stock Option (right to buy)","published_at":"2018-02-02T20:11:15.000Z","date":"2018-01-31","kind":"grant","acquired":true,"shares":245000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Grant to the Reporting Person of a stock option under the Issuer's 2016 Equity Incentive Plan (the \"Plan\"). 6.25% of the shares will vest on April 30, 2018 and the remaining 93.75% of the shares will vest in equal monthly installments thereafter over 45 months, such that the stock option shall be fully vested on the four-year anniversary of the date of grant, provided that at the relevant vesting dates the Reporting Person's continuous service to the Issuer has not been terminated as defined in and as determined under the Plan. 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