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Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Securities held by Flagship Pioneering Fund VI, L.P. (\"Flagship Fund VI\"). Flagship Pioneering Fund VI General Partner LLC (\"Flagship Fund VI GP\") is the general partner of Flagship Fund VI. Flagship Pioneering, LLC (\"Flagship Pioneering\") is the manager of Flagship Fund VI GP. Noubar B. Afeyan, Ph.D. is the ultimate control person of Flagship Pioneering. Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Securities held by Flagship Pioneering Fund VII, L.P. (\"Flagship Fund VII\"). 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(\"Flagship Fund VI\"). Flagship Pioneering Fund VI General Partner LLC (\"Flagship Fund VI GP\") is the general partner of Flagship Fund VI. Flagship Pioneering, LLC (\"Flagship Pioneering\") is the manager of Flagship Fund VI GP. Noubar B. Afeyan, Ph.D. is the ultimate control person of Flagship Pioneering. Each of the Reporting Persons disclaims beneficial ownership of such shares except to the extent of his or its pecuniary interest therein, if any."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock (collectively, the \"Preferred Stock\") automatically converted into shares of the Issuer's Common Stock on a one-for-1.5190 basis upon the closing of the Issuer's initial public offering on March 2, 2026. 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The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Represents shares held directly by FPN, L.P. (\"FPN Fund\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":441176},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":21,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613232,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":5000000,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents shares held directly by Flagship Pioneering Special Opportunities Fund II, L.P. (\"Flagship Opportunities Fund II\")"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. 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The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Represents shares held directly by Flagship Pioneering Fund VI, L.P. (\"Flagship Pioneering VI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":441176},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613230,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":3333333,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Represents shares held directly by FPN, L.P. (\"FPN Fund\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":882353},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613229,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":13333333,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents shares held directly by Flagship Pioneering Special Opportunities Fund II, L.P. (\"Flagship Opportunities Fund II\")"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3529413},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613228,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":666667,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Represents shares held directly by Nutritional Health LTP Fund, L.P. (\"Nutritional LTP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":176470},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613227,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":2666667,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Represents shares held directly by Flagship Pioneering Fund VI, L.P. (\"Flagship Pioneering VI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":705882},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613226,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":3000000,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Represents shares held directly by Nutritional Health LTP Fund, L.P. (\"Nutritional LTP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":794118},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613225,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":27388000,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Represents shares held directly by Flagship Pioneering Fund VI, L.P. (\"Flagship Pioneering VI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":7249767},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613224,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":22275232,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Represents shares held directly by Flagship Ventures Fund V, L.P. (\"Flagship Fund V\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":5896386},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613223,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Convertible Preferred Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":4112000,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Represents shares held directly by Flagship V VentureLabs Rx Fund, L.P. (\"Flagship Fund V Rx\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":1088470},"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613222,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"purchase","acquired":true,"shares":294117,"price":17,"value":4999989.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Represents shares held directly by FPN, L.P. (\"FPN Fund\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":1617646,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613221,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":1323529,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Represents shares held directly by FPN, L.P. (\"FPN Fund\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":1323529,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613220,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"purchase","acquired":true,"shares":661764,"price":17,"value":11249988.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents shares held directly by Flagship Pioneering Special Opportunities Fund II, L.P. (\"Flagship Opportunities Fund II\")"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":5514707,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613219,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":4852943,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Represents shares held directly by Flagship Pioneering Special Opportunities Fund II, L.P. (\"Flagship Opportunities Fund II\")"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":4852943,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613218,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":970588,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Represents shares held directly by Nutritional Health LTP Fund, L.P. (\"Nutritional LTP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":970588,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613217,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"purchase","acquired":true,"shares":220588,"price":17,"value":3749996.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Represents shares held directly by Flagship Pioneering Fund VI, L.P. (\"Flagship Pioneering VI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":8617413,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613216,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":8396825,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Represents shares held directly by Flagship Pioneering Fund VI, L.P. (\"Flagship Pioneering VI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":8396825,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613215,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":5896386,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Represents shares held directly by Flagship Ventures Fund V, L.P. (\"Flagship Fund V\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":5896386,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}},{"id":2613214,"issuer":{"id":83618,"kind":"organization","name":"Omega Therapeutics, Inc.","symbol":"OMGA"},"owners":[{"id":63978,"kind":"organization","name":"Flagship Pioneering, LLC","position":1,"cik":"0001400240","reported_name":"Flagship Pioneering Inc.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63980,"kind":"organization","name":"Flagship Pioneering Fund VI General Partner LLC","position":2,"cik":"0001724957","reported_name":"Flagship Pioneering Fund VI General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64111,"kind":"organization","name":"Flagship Pioneering Fund VI, L.P.","position":3,"cik":"0001716926","reported_name":"Flagship Pioneering Fund VI, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64114,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II, L.P.","position":4,"cik":"0001761283","reported_name":"Flagship Pioneering Special Opportunities Fund II, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63983,"kind":"organization","name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","position":5,"cik":"0001826217","reported_name":"Flagship Pioneering Special Opportunities Fund II General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":64113,"kind":"organization","name":"Nutritional Health LTP Fund, L.P.","position":6,"cik":"0001780956","reported_name":"Nutritional Health LTP Fund, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63982,"kind":"organization","name":"Nutritional Health LTP Fund General Partner LLC","position":7,"cik":"0001780951","reported_name":"Nutritional Health LTP Fund General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":63984,"kind":"organization","name":"FPN General Partner LLC","position":8,"cik":"0001860059","reported_name":"FPN General Partner LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":136592,"kind":"organization","name":"FPN, L.P.","position":9,"cik":"0001860062","reported_name":"FPN, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":44731,"kind":"person","name":"Afeyan Noubar","position":10,"cik":"0001222012","reported_name":"AFEYAN NOUBAR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-05T17:41:01.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":1088470,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The shares of Issuer's preferred stock have no expiration date and are convertible at the holder's election into Issuer's common stock at a conversion ratio of 1-to-0.264706. The preferred stock will automatically convert into shares of the Issuer's common stock, for no additional consideration, upon the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Represents shares held directly by Flagship V VentureLabs Rx Fund, L.P. (\"Flagship Fund V Rx\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"Flagship Fund V is a member of VentureLabs V. VentureLabs V Manager LLC (\"VentureLabs V Manager\") is the manager of VentureLabs V. Flagship Pioneering, Inc. (\"Flagship Pioneering\") is the manager of VentureLabs V Manager. The General Partner of Flagship Fund V and Flagship Fund V Rx is Flagship Ventures Fund V General Partner LLC (\"Flagship V GP\"). The General Partner of Flagship Pioneering VI is Flagship Pioneering Fund VI General Partner LLC (\"Flagship Pioneering VI GP\"). The General Partner of Flagship Opportunities Fund II is Flagship Pioneering Special Opportunities Fund II General Partner LLC (\"Flagship Opportunities Fund II GP\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"(continued from above) The general partner of FPN Fund is FPN General Partner LLC (\"FPN GP\"). The manager of Flagship Pioneering VI GP, Flagship Opportunities Fund II GP, and FPN GP is Flagship Pioneering. The general partner of Nutritional LTP is Nutritional Health LTP Fund General Partner LLC (\"Nutritional LTP GP\" and, together with VentureLabs V Manager, Flagship Pioneering, Flagship V GP, Flagship Pioneering VI GP, Flagship Opportunities Fund II GP and FPN GP, the \"Flagship General Partners\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"(continued from above)  Noubar B. Afeyan, Ph.D. (\"Dr. Afeyan\") is the sole director of Flagship Pioneering and may be deemed to have beneficial ownership of all the shares held by VentureLabs V, Flagship Pioneering VI, Flagship Opportunities Fund II and FPN Fund. In addition, Dr. Afeyan serves as the sole manager of Flagship V GP and is the sole member and manager of Nutritional LTP GP and may be deemed to have beneficial ownership of all the shares held by Flagship Fund V, Flagship Fund V Rx and Nutritional LTP. None of the Flagship General Partners nor Dr. Afeyan directly own any of the shares held by the Reporting Persons, and each of the Flagship General Partners and Dr. Afeyan disclaims beneficial ownership of such shares except to the extent of its or his pecuniary interest therein."}],"balance_after":1088470,"source":{"system":"sec-edgar","filing":"0000899243-21-031796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1860062/000089924321031796/doc4.xml","form_type":"4"}}]}