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Institutional Investment Manager
MPM ASSET MANAGEMENT LLC
MPM ASSET MANAGEMENT LLC (CIK: 0001263048) incorporated in Delaware, located at 399 Boylston Street, Suite 1100, Boston, MA. Institutional holdings reported to the SEC.

Institutional Holdings (2016Q3)
Portfolio Summary: 8 holdings with a total value of $305,291,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 RADIUS HEALTH 3,887,502 210,275,000 68.88%
2 Syndax Pharmaceuticals Inc 2,168,691 32,877,000 10.77%
3 EPIZYME INC COM 1,729,674 17,020,000 5.58%
4 CHIASMA INC 5,736,296 16,865,000 5.52%
5 ENDOLOGIX INC 1,121,447 14,355,000 4.70%
6 Proteon Therapeutics 983,381 9,175,000 3.01%
7 CONATUS PHARMACEUTICALS INC COM 1,192,080 2,384,000 0.78%
8 ARATANA THERAPEUTICS INC COM 250,000 2,340,000 0.77%

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000950123-16-021719, filed 2016.11.10).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.