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adjusted for the exchange ratio and the reverse stock split."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Received in exchange for a stock option to acquire 35,000 shares of Tectonic common stock pursuant to the Merger Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The shares subject to the option vest in 48 equal monthly installments beginning on December 1, 2023, subject to the Reporting Person's continued service to the Issuer on each such vesting date"},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split."}],"balance_after":18704,"derivative":{"exercise_price":5.38,"expiration_date":"2033-11-30","underlying":"Common Stock","underlying_shares":18704},"source":{"system":"sec-edgar","filing":"0001415889-24-017964","document":"form4-06242024_080626.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2023849/000141588924017964/form4-06242024_080626.xml","form_type":"4"}},{"id":1470988,"issuer":{"id":5328,"kind":"organization","name":"Tectonic Therapeutic, Inc.","symbol":"TECX"},"owners":[{"id":36885,"kind":"person","name":"Ruddy Marcella K.","position":1,"cik":"0002023849","reported_name":"Ruddy Marcella K.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2024-06-24T20:22:31.000Z","date":"2024-06-20","kind":"grant","planned":false,"acquired":true,"shares":43946,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split."},{"field":"shares","element":"transactionShares","label":"F2","text":"Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Received in exchange for a stock option to acquire 82,233 shares of Tectonic common stock pursuant to the Merger Agreement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"23,360 of the shares subject to the option are immediately exercisable and the remainder vest in 13 equal monthly installments beginning on July 19, 2024, subject to the Reporting Person's continued service to the Issuer on each such vesting date."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split."}],"balance_after":43946,"derivative":{"exercise_price":2.38,"expiration_date":"2031-09-16","underlying":"Common Stock","underlying_shares":43946},"source":{"system":"sec-edgar","filing":"0001415889-24-017964","document":"form4-06242024_080626.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2023849/000141588924017964/form4-06242024_080626.xml","form_type":"4"}},{"id":1470987,"issuer":{"id":5328,"kind":"organization","name":"Tectonic Therapeutic, Inc.","symbol":"TECX"},"owners":[{"id":36885,"kind":"person","name":"Ruddy Marcella K.","position":1,"cik":"0002023849","reported_name":"Ruddy Marcella K.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2024-06-24T20:22:31.000Z","date":"2024-06-20","kind":"grant","planned":false,"acquired":true,"shares":32065,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Received in exchange for 60,000 shares of common stock of Tectonic Therapeutic, Inc., a Delaware corporation (\"Tectonic\"), pursuant to an Agreement and Plan of Merger dated as of January 30, 2024 (the \"Merger Agreement\") by and among AVROBIO, Inc., a Delaware corporation (\"AVROBIO\"), Tectonic and Alpine Merger Subsidiary, Inc., a direct, wholly owned subsidiary of AVROBIO (the \"Merger Sub\"). Under the terms of the Merger Agreement, on June 20, 2024, Merger Sub merged with and into Tectonic (the \"Merger\"), with Tectonic surviving the Merger as a wholly owned subsidiary of AVROBIO. Upon the closing of the Merger, each share of Tectonic common stock was converted into the right to receive 0.534419990 shares of the Issuer's common stock, after giving effect to a reverse stock split of the Issuer's common stock of 1-for-12. Subsequent to the Merger, the name of the Issuer was changed from AVROBIO, Inc. to Tectonic Therapeutic, Inc."}],"balance_after":32065,"source":{"system":"sec-edgar","filing":"0001415889-24-017964","document":"form4-06242024_080626.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2023849/000141588924017964/form4-06242024_080626.xml","form_type":"4"}}]}