0000950123-19-003888.txt : 20190503 0000950123-19-003888.hdr.sgml : 20190503 20190503161518 ACCESSION NUMBER: 0000950123-19-003888 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20190331 FILED AS OF DATE: 20190503 DATE AS OF CHANGE: 20190503 EFFECTIVENESS DATE: 20190503 FILER: COMPANY DATA: COMPANY CONFORMED NAME: TRV GP, LLC CENTRAL INDEX KEY: 0001578973 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-18416 FILM NUMBER: 19796342 BUSINESS ADDRESS: STREET 1: C/O 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: C/O 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 0001578973 XXXXXXXX 03-31-2019 03-31-2019 TRV GP, LLC

C/O Third Rock Ventures 29 Newbury Street, 3rd Floor Boston MA 02116

13F HOLDINGS REPORT 028-18416 N Kevin Gillis 617-585-2000 /s/ Kevin Gillis Boston MA 05-03-2019 3 4 100986 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 SESEN BIO, INC. COM 286221106 4987 4841591 SH DFND 1,2,3 4841591 0 0 ZAFGEN, INC. COM 98885E103 576 210371 SH DFND 1,2,3 210371 0 0 RHYTHM PHARMACEUTICALS, INC. COM 76243J105 54311 1981437 SH DFND 1,2,3 1981437 0 0 CONSTELLATION PHARMACEUTICALS INC. COM 210373106 41112 3034083 SH DFND 1,2,3 3034083 0 0