0000950123-14-000466.txt : 20140123 0000950123-14-000466.hdr.sgml : 20140123 20140123130325 ACCESSION NUMBER: 0000950123-14-000466 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20131231 FILED AS OF DATE: 20140123 DATE AS OF CHANGE: 20140123 EFFECTIVENESS DATE: 20140123 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MPM ASSET MANAGEMENT LLC CENTRAL INDEX KEY: 0001263048 IRS NUMBER: 043351032 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-13379 FILM NUMBER: 14542293 BUSINESS ADDRESS: STREET 1: THE JOHN HANCOCK TOWER STREET 2: 200 CLARENDON STREET, 54TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 6174259200 MAIL ADDRESS: STREET 1: THE JOHN HANCOCK TOWER STREET 2: 200 CLARENDON STREET, 54TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001263048 XXXXXXXX 12-31-2013 12-31-2013 MPM ASSET MANAGEMENT LLC

THE JOHN HANCOCK TOWER 200 CLARENDON STREET, 54TH FLOOR BOSTON MA 02116

13F HOLDINGS REPORT 028-13379 N Ansbert Gadicke (617) 425-9200 /s/ Ansbert Gadicke Boston MA 01-23-2014 0 12 309627 false INFORMATION TABLE 2 form13fInfoTable.xml INFORMATION TABLE FOR FORM 13F Aratana Therapeutics Inc. Common 03874P101 83105 4351048 SH SOLE 4351048 0 0 AVEO Pharmaceuticals, Inc. Common 053588109 2511 1372118 SH SOLE 1372118 0 0 Conatus Pharmaceuticals, Inc. Common 20600T108 7689 1192080 SH SOLE 1192080 0 0 EnteroMedics, Inc. Common 29365M208 3406 1669753 SH SOLE 1669753 0 0 EpiZyme, Inc. Common 29428V104 59914 2880485 SH SOLE 2880485 0 0 Kalobios Pharmaceuticals, Inc. Common 48344T100 11638 2632928 SH SOLE 2632928 0 0 MacroGenics, Inc. Common 556099109 48852 1780955 SH SOLE 1780955 0 0 Pacira Pharmaceuticals, Inc. Common 695127100 5749 100000 SH SOLE 100000 0 0 PharmAthene, Inc. Common 71714G102 11807 6347614 SH SOLE 6347614 0 0 Portola Pharmaceuticals, Inc. Common 737010108 62865 2441344 SH SOLE 2441344 0 0 Sangamo biosciences, Inc. Common 800677106 312 22487 SH SOLE 22487 0 0 Verastem, Inc. Common 92337C104 11780 1033324 SH SOLE 1033324 0 0