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Each of SV Fund VI GP, SVLSF VI, LLC and the SVLSF VI, LLC investment committee disclaims beneficial ownership of the shares owned directly by SV Life SP LP, except to the extent of any pecuniary interest therein."}],"balance_after":75591,"source":{"system":"sec-edgar","filing":"0000899243-18-017965","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1717728/000089924318017965/doc4.xml","form_type":"4"}},{"id":3884167,"issuer":{"id":5328,"kind":"organization","name":"Tectonic Therapeutic, Inc.","symbol":"TECX"},"owners":[{"id":105497,"kind":"organization","name":"SVLSF VI, LLC","position":1,"cik":"0001717728","reported_name":"SVLSF VI, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154547,"kind":"organization","name":"SV Life Sciences Fund VI, L.P.","position":2,"cik":"0001642251","reported_name":"SV Life Sciences Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":154548,"kind":"organization","name":"SV Life Sciences Fund VI Strategic Partners, L.P.","position":3,"cik":"0001667605","reported_name":"SV Life Sciences Fund VI Strategic Partners, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":105496,"kind":"organization","name":"SV Life Sciences Fund VI (GP), L.P.","position":4,"cik":"0001717730","reported_name":"SV Life Sciences Fund VI (GP), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-06-25T18:16:19.000Z","date":"2018-06-25","kind":"exercise","acquired":true,"shares":2207843,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the total number of shares of Common Stock received by SV Life Sciences Fund VI, L.P. (\"SV Life LP\") upon the conversion of the Issuer's Series A Preferred Stock in connection with the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are held directly by SV Life LP. SV Health Investors, LLC is the Manager of SV Life LP. SV Life Sciences Fund VI (GP), L.P., (\"SV Fund VI GP\") is the general partner of SV Life LP. The general partner of SV Fund VI GP is SVLSF VI, LLC. The members of the investment committee of SVLSF VI, LLC are Kate Bingham, Thomas Flynn, James Garvey, Eugene D. Hill, III, Paul LaViolette, and Michael Ross. Each of SV Fund VI GP, SVLSF VI, LLC and the SVLSF VI, LLC investment committee disclaims beneficial ownership of the shares owned directly by SV Life LP,  except to the extent of any pecuniary interest therein."}],"balance_after":2207843,"source":{"system":"sec-edgar","filing":"0000899243-18-017965","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1717728/000089924318017965/doc4.xml","form_type":"4"}}]}