0000950123-18-003655.txt : 20180419 0000950123-18-003655.hdr.sgml : 20180419 20180419170947 ACCESSION NUMBER: 0000950123-18-003655 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20180331 FILED AS OF DATE: 20180419 DATE AS OF CHANGE: 20180419 EFFECTIVENESS DATE: 20180419 FILER: COMPANY DATA: COMPANY CONFORMED NAME: TRV GP II, LLC CENTRAL INDEX KEY: 0001614073 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-18419 FILM NUMBER: 18764478 BUSINESS ADDRESS: STREET 1: THIRD ROCK VENTURES STREET 2: 29 NEWBURY STREET, 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-585-2000 MAIL ADDRESS: STREET 1: THIRD ROCK VENTURES STREET 2: 29 NEWBURY STREET, 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001614073 XXXXXXXX 03-31-2018 03-31-2018 TRV GP II, LLC

THIRD ROCK VENTURES 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116

13F HOLDINGS REPORT 028-18419 N Kevin Gillis 617-585-2000 /s/ Kevin Gillis Boston MA 04-19-2018 3 5 533624 false 1 028-18439 Mark Levin 2 028-18438 Kevin P. Starr 3 028-18419 Robert I. Tepper INFORMATION TABLE 2 form13fInfoTable.xml INFORMATION TABLE FOR FORM 13F SAGE THERAPEUTICS, INC. COM 78667J108 6018 37362 SH DFND 1,2,3 37362 0 0 JOUNCE THERAPEUTICS, INC. COM 481116101 228648 10230349 SH DFND 1,2,3 10230349 0 0 MYOKARDIA, INC. COM 62857M105 43193 885104 SH DFND 1,2,3 885104 0 0 BLUEPRINT MEDICINES CORPORATION COM 09627Y109 225009 2453753 SH DFND 1,2,3 2453753 0 0 ALLENA PHARMACEUTICALS, INC. COM 018119107 30756 2790964 SH DFND 1,2,3 2790964 0 0