0000950123-23-010821.txt : 20231114 0000950123-23-010821.hdr.sgml : 20231114 20231114160003 ACCESSION NUMBER: 0000950123-23-010821 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230930 FILED AS OF DATE: 20231114 DATE AS OF CHANGE: 20231114 EFFECTIVENESS DATE: 20231114 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Flagship Pioneering Inc. CENTRAL INDEX KEY: 0001400240 IRS NUMBER: 752992246 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-17559 FILM NUMBER: 231405451 BUSINESS ADDRESS: STREET 1: 55 CAMBRIDGE PARKWAY, SUITE 800E CITY: CAMBRIDGE STATE: MA ZIP: 02142 BUSINESS PHONE: 617 868-1888 MAIL ADDRESS: STREET 1: 55 CAMBRIDGE PARKWAY, SUITE 800E CITY: CAMBRIDGE STATE: MA ZIP: 02142 FORMER COMPANY: FORMER CONFORMED NAME: Flagship Ventures Management, Inc. DATE OF NAME CHANGE: 20070522 13F-HR 1 primary_doc.xml X0202 13F-HR LIVE 0001400240 XXXXXXXX 09-30-2023 09-30-2023 false Flagship Pioneering Inc.

55 Cambridge Parkway, Suite 800E Cambridge MA 02142

13F HOLDINGS REPORT 028-17559 N Noubar B. Afeyan, Ph.D. 617-868-1888 /s/ Noubar B. Afeyan Cambridge MA 11-14-2023 3 18 1377673352 false 1 028-18466 Flagship Ventures Fund V General Partner LLC 2 028-17238 Flagship Ventures Fund IV General Partner LLC 3 028-19988 Noubar Afeyan INFORMATION TABLE 2 27689.xml INFORMATION TABLE FOR FORM 13F Axcella Health Inc COM 05454B204 7576142 725684 SH DFND 2,3 0 725684 0 Axcella Health Inc COM 05454B204 4639275 444375 SH DFND 3 0 444375 0 Denali Therapeutics Inc COM 24823R105 54049940 2619968 SH DFND 1,3 0 2619968 0 Evelo Biosciences Inc COM 299734202 6234308 1590385 SH DFND 2,3 0 1590385 0 Evelo Biosciences Inc COM 299734202 2000238 510265 SH DFND 1,3 0 510265 0 Evelo Biosciences Inc COM 299734202 22861338 5831974 SH DFND 3 0 5831974 0 Foghorn Therapeutics Inc COM 344174107 46654390 9330878 SH DFND 1,3 0 9330878 0 Foghorn Therapeutics Inc COM 344174107 16716210 3343242 SH DFND 3 0 3343242 0 Moderna Inc COM 60770K107 997999755 9662114 SH DFND 2,3 0 9662114 0 Moderna Inc COM 60770K107 405310 3924 SH DFND 3 0 3924 0 Omega Therapeutics Inc COM 68217N105 15017441 6984856 SH DFND 1,3 0 6984856 0 Omega Therapeutics Inc COM 68217N105 47817555 22240723 SH DFND 3 0 22240723 0 Sana Biotechnology Inc COM 799566104 35188664 9092678 SH DFND 1,3 0 9092678 0 Sana Biotechnology Inc COM 799566104 61568519 15909178 SH DFND 3 0 15909178 0 Seres Therapeutics Inc COM 81750R102 20117845 8452876 SH DFND 2,3 0 8452876 0 Seres Therapeutics Inc COM 81750R102 34900722 14664169 SH DFND 3 0 14664169 0 Syros Pharmaceuticals Inc COM 87184Q206 1160700 293848 SH DFND 2,3 0 293848 0 Syros Pharmaceuticals Inc COM 87184Q206 2765000 700000 SH DFND 3 0 700000 0