0001012975-17-000578.txt : 20170802 0001012975-17-000578.hdr.sgml : 20170802 20170802154630 ACCESSION NUMBER: 0001012975-17-000578 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20170630 FILED AS OF DATE: 20170802 DATE AS OF CHANGE: 20170802 EFFECTIVENESS DATE: 20170802 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: 17999736 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 13F-HR LIVE false false false 0001400240 XXXXXXXX 06-30-2017 06-30-2017 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, Ph.D. Cambridge MA 08-02-2017 2 5 283569 false 1 0001508053 028-15778 Flagship Ventures 2007 General Partner LLC 2 0001508051 028-17238 Flagship Ventures Fund IV General Partner LLC INFORMATION TABLE 2 infotable.xml INFORMATION TABLE T2 BIOSYSTEMS INC COM 89853L104 5241 1632816 SH DFND 0 1632816 0 T2 BIOSYSTEMS INC COM 89853L104 1020 317767 SH DFND 2 0 317767 0 SERES THERAPEUTICS INC COM 81750R102 143316 12682876 SH DFND 2 0 12682876 0 EDITAS MEDICINE INC COM 28106W103 56652 3376184 SH DFND 2 0 3376184 0 SYROS PHARMACEUTICALS INC COM 87184Q107 77339 4806656 SH DFND 2 0 4806656 0