0001012975-15-000065.txt : 20150126 0001012975-15-000065.hdr.sgml : 20150126 20150126160711 ACCESSION NUMBER: 0001012975-15-000065 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20141231 FILED AS OF DATE: 20150126 DATE AS OF CHANGE: 20150126 EFFECTIVENESS DATE: 20150126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Third Rock Ventures, LLC CENTRAL INDEX KEY: 0001600135 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-16025 FILM NUMBER: 15548636 BUSINESS ADDRESS: STREET 1: 29 NEWBURY STREET STREET 2: 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-585-2000 MAIL ADDRESS: STREET 1: 29 NEWBURY STREET STREET 2: 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001600135 XXXXXXXX 12-31-2014 12-31-2014 Third Rock Ventures, LLC

29 NEWBURY STREET 3RD FLOOR BOSTON MA 02116

13F HOLDINGS REPORT 028-16025 N Kevin Gillis 617-585-2000 /s/ Kevin Gillis Boston MA 01-26-2015 0 6 1222711 false INFORMATION TABLE 2 trv.xml Agios Pharmaceuticals, Inc. COM 00847X104 343973 3070090 SH DFND 3070090 0 0 bluebird bio, Inc. COM 09609G100 111445 1215054 SH DFND 1215054 0 0 Eleven Biotherapeutics, Inc. COM 286221106 57518 4841591 SH DFND 4841591 0 0 Foundation Medicine, Inc. COM 350465100 109483 4927234 SH DFND 4927234 0 0 Sage Therapeutics, Inc. COM 78667J108 427525 11681008 SH DFND 11681008 0 0 Zafgen Inc. COM 98885E103 172767 5602045 SH DFND 5602045 0 0