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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 (2016Q2)
Portfolio Summary: 14 holdings with a total value of $308,298,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ENTEROMEDICS INC 74,215 22,000 0.01%
2 MACROGENICS INC 3,168 86,000 0.03%
3 SANGAMO THERAPEUTICS INCORPORATED 22,487 130,000 0.04%
4 COLUCID PHARMACEUTICALS ORD 21,806 178,000 0.06%
5 MAST THERAPEUTICS INC COM 2,551,851 1,199,000 0.39%
6 CONATUS PHARMACEUTICALS INC 1,192,080 2,456,000 0.80%
7 NEVRO CORP COM 72,413 5,341,000 1.73%
8 ARATANA THERAPEUTICS INC 1,117,875 7,065,000 2.29%
9 Proteon Therapeutics Inc 983,381 7,897,000 2.56%
10 ENDOLOGIX INC 1,121,447 13,973,000 4.53%
11 CHIASMA INC 5,736,296 16,578,000 5.38%
12 EPIZYME INC COM 1,729,674 17,712,000 5.75%
13 Syndax Pharmaceuticals Inc 2,168,691 21,362,000 6.93%
14 RADIUS HEALTH INCORPORATED COM NEW 5,831,253 214,299,000 69.51%

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0000950123-16-018966, filed 2016.08.08).

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.