0000950123-21-002271.txt : 20210216 0000950123-21-002271.hdr.sgml : 20210216 20210216064557 ACCESSION NUMBER: 0000950123-21-002271 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20201231 FILED AS OF DATE: 20210216 DATE AS OF CHANGE: 20210216 EFFECTIVENESS DATE: 20210216 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: 21632224 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 0001578973 XXXXXXXX 12-31-2020 12-31-2020 false 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 02-16-2021 3 1 6536 false 1 028-18439 Mark Levin 2 028-18438 Kevin P. Starr 3 028-18419 Robert I. Tepper INFORMATION TABLE 2 3346.xml INFORMATION TABLE FOR FORM 13F SESEN BIO, INC. COM 286221106 6536 4841591 SH DFND 1,2,3 4841591 0 0