0001012975-15-000707.txt : 20151023 0001012975-15-000707.hdr.sgml : 20151023 20151023191502 ACCESSION NUMBER: 0001012975-15-000707 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20151014 FILED AS OF DATE: 20151023 DATE AS OF CHANGE: 20151023 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CytomX Therapeutics, Inc. CENTRAL INDEX KEY: 0001501989 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 343 OYSTER POINT BLVD. STREET 2: SUITE 100 CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94080 BUSINESS PHONE: 650.515.3185 MAIL ADDRESS: STREET 1: 343 OYSTER POINT BLVD. STREET 2: SUITE 100 CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94080 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: TEPPER ROBERT I CENTRAL INDEX KEY: 0001192595 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37587 FILM NUMBER: 151173710 MAIL ADDRESS: STREET 1: 40 LANDSDOWNE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: STARR KEVIN P CENTRAL INDEX KEY: 0001192603 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37587 FILM NUMBER: 151173711 MAIL ADDRESS: STREET 1: 75 SIDNEY STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: LEVIN MARK J CENTRAL INDEX KEY: 0001180428 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37587 FILM NUMBER: 151173712 MAIL ADDRESS: STREET 1: 40 LANDSDOWNE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: TRV GP, LLC CENTRAL INDEX KEY: 0001578973 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37587 FILM NUMBER: 151173713 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 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Third Rock Ventures GP, L.P. CENTRAL INDEX KEY: 0001578976 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37587 FILM NUMBER: 151173714 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 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: THIRD ROCK VENTURES LP CENTRAL INDEX KEY: 0001408591 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37587 FILM NUMBER: 151173715 BUSINESS ADDRESS: STREET 1: 29 NEWBURY STREET STREET 2: SUITE 401 CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-859-3099 MAIL ADDRESS: STREET 1: 29 NEWBURY STREET STREET 2: SUITE 401 CITY: BOSTON STATE: MA ZIP: 02116 4 1 edgar.xml PRIMARY DOCUMENT X0306 4 2015-10-14 1 0001501989 CytomX Therapeutics, Inc. CTMX 0001408591 THIRD ROCK VENTURES LP 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001578976 Third Rock Ventures GP, L.P. 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001578973 TRV GP, LLC 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001180428 LEVIN MARK J 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001192603 STARR KEVIN P 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001192595 TEPPER ROBERT I 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 Common Stock 2015-10-14 4 C 0 8670351 A 8670351 D Series B-1 Preferred Stock 2015-10-14 4 C 0 8105314 0 D Common Stock 8105314 0 D Series C Preferred Stock 2015-10-14 4 C 0 565037 0 D Common Stock 565037 0 D The aggregate number of shares of Issuer's Preferred Stock held by the Reporting Person converted into Common Stock immediately prior to the closing of the Issuer's initial public offering and has no expiration date. These shares converted into Common Stock on a one-for-one basis. Reflects the conversion of the Issuer's Preferred Stock into Common Stock on a one-for-one basis, which became effective immediately prior to the closing of the Issuer's initial public offering. The shares are directly held by Third Rock Ventures, L.P. ("TRV"). The general partner of TRV is Third Rock Ventures GP, L.P. ("TRV GP LP"). The general partner of TRV GP LP is TRV GP, LLC ("TRV GP LLC"). The individual managers of TRV GP LLC are Mark Levin ("Levin"), Kevin Starr ("Starr") and Dr. Robert Tepper ("Tepper") and, as such, each of TRV GP LP and TRV GP LLC, Levin, Starr and Tepper exercises shared voting and investment power over the shares held of record by TRV. Each of the Reporting Persons disclaims beneficial ownership of the shares except to the extent of their pecuniary interest therein, if any. /s/ Kevin Gillis, Chief Financial Officer of TRV GP, LLC, general partner of Third Rock Ventures GP, L.P., general partner of Third Rock Ventures, L.P. 2015-10-23 /s/ Kevin Gillis, Chief Financial Officer of TRV GP, LLC, general partner of Third Rock Ventures GP, L.P. 2015-10-23 /s/ Kevin Gillis, Chief Financial Officer of TRV GP, LLC 2015-10-23 /s/ Kevin Gillis by power of attorney for Mark Levin 2015-10-23 /s/ Kevin Gillis by power of attorney for Kevin Starr 2015-10-23 /s/ Kevin Gillis by power of attorney for Robert I. Tepper 2015-10-23