<SEC-DOCUMENT>0001104659-18-012406-index.html : 20180227 <SEC-HEADER>0001104659-18-012406.hdr.sgml : 20180227 <ACCEPTANCE-DATETIME>20180227062648 ACCESSION NUMBER: 0001104659-18-012406 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20180227 DATE AS OF CHANGE: 20180227 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: OncoMed Pharmaceuticals Inc CENTRAL INDEX KEY: 0001302573 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 383572512 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-87757 FILM NUMBER: 18642851 BUSINESS ADDRESS: STREET 1: 800 CHESAPEAKE DRIVE CITY: REDWOOD CITY STATE: CA ZIP: 94063 BUSINESS PHONE: 650-995-8200 MAIL ADDRESS: STREET 1: 800 CHESAPEAKE DRIVE CITY: REDWOOD CITY STATE: CA ZIP: 94063 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: PRIMECAP MANAGEMENT CO/CA/ CENTRAL INDEX KEY: 0000763212 IRS NUMBER: 953868081 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 177 EAST COLORADO BLVD. STREET 2: 11TH FLOOR CITY: PASADENA STATE: CA ZIP: 91105 BUSINESS PHONE: 6263049222 MAIL ADDRESS: STREET 1: 177 EAST COLORADO BLVD. STREET 2: 11TH FLOOR CITY: PASADENA STATE: CA ZIP: 91105 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>a18-7113_36sc13ga.htm <DESCRIPTION>SC 13G/A <TEXT> Document 1 - file: a18-7113_36sc13ga.htm
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