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January 2, 2020, and the remaining 75% shall vest in equal monthly installments thereafter over a three-year period."}],"balance_after":186000,"derivative":{"exercise_price":15.65,"expiration_date":"2029-01-01","underlying":"Common Stock","underlying_shares":186000},"source":{"system":"sec-edgar","filing":"0000899243-19-000539","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1681087/000089924319000539/doc4.xml","form_type":"4"}},{"id":3703045,"issuer":{"id":5328,"kind":"organization","name":"Tectonic Therapeutic, Inc.","symbol":"TECX"},"owners":[{"id":33821,"kind":"person","name":"Ostrowski Erik","position":1,"cik":"0001762507","reported_name":"Ostrowski Erik","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common 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Each restricted stock unit represents a contingent\nright to receive one share of AVROBIO, Inc., common stock. The restricted stock units vest as follows: 25% of the shares vest on January 2, 2020, and the\nremaining 75% shall vest in equal monthly installments thereafter over a three-year period."}],"balance_after":2300,"source":{"system":"sec-edgar","filing":"0000899243-19-000539","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1681087/000089924319000539/doc4.xml","form_type":"4"}}]}