MPM ASSET MANAGEMENT LLC Information

THE JOHN HANCOCK TOWER, BOSTON, Massachusetts, 02116, (617) 425-9200

Report Date: 12/31/2014

Position Statistics

Total Positions 15
New Positions 2
Increased Positions 2
Decreased Positions 1
Positions with Activity 3
Sold Out Positions 0
Total Mkt Value (in $ millions) 492

Institutional Holdings information is filed by major institutions on form 13-F with the Securities and Exchange Commission.

Sector Weighting

Basic Materials
Capital Goods
Conglomerates
Consumer Cyclical
Consumer/Non-Cyclical
Energy
Financial
Healthcare 54.52%
Services
Technology
Transportation
Utilities

15 Positions as of 12/31/2014

Company Class Value of Shares ($1,000s) ▼ Change in Value ($1,000s) Change (%) Shares Held
RADIUS HEALTH INC COM NEW 248,703 New 5,831,253
EPIZYME INC COM 56,773 New 2,413,819
PORTOLA PHARMACEUTICALS INC COM 46,483 New 1,220,672
ARATANA THERAPEUTICS INC COM 40,809 New 2,118,845
NEVRO CORP COM 28,725 28,725 New 686,704
TRIVASCULAR TECHNOLOGIES INC COM 18,229 New 1,776,692
CELLADON CORP COM 14,530 -4,840 (24.99) 800,542
PHARMATHENE INC COM 10,664 New 6,347,614
PROTEON THERAPEUTICS INC COM 10,630 10,630 New 983,381
CONATUS PHARMACEUTICALS INC COM 7,582 New 1,192,080
VERASTEM INC COM 6,076 New 816,683
MAST THERAPEUTICS INC COM 1,327 New 2,551,851
ENTEROMEDICS INC COM NEW 1,180 New 1,113,168
SANGAMO BIOSCIENCES INC COM 378 New 22,487
MACROGENICS INC COM 110 New 3,168


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