Dark
Light
System
Institutional Investment Manager
DEERFIELD MANAGEMENT COMPANY, L.P.
DEERFIELD MANAGEMENT COMPANY, L.P. (CIK: 0001009258) incorporated in Delaware, located at 345 Park Avenue South, 12th Floor, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2016Q4)
Original 13F HR (0001140361-17-007402) filed in 2017.02.14
#
Name
Shares
Value ($)
%
Options
Notes
51 AAC HLDGS INC 1,975,347 14,302 0.59%
52 SPARK THERAPEUTICS INCORPORATED 283,000 14,122 0.58%
53 Foamix Pharmaceuticals Ltd. 1,232,844 13,685 0.56%
54 GLAUKOS CORP 393,228 13,488 0.55%
55 KITE PHARMA INC 297,902 13,358 0.55%
56 WAVE LIFE SCIENCES LTD 472,124 12,346 0.51%
57 ADEPTUS HEALTH INC CL A 1,600,861 12,231 0.50%
58 CYTOMX THERAPEUTICS INC COM 943,433 10,368 0.43%
59 IONIS PHARMACEUTICALS INC 214,095 10,240 0.42%
60 ACLARIS THERAPEUTICS INC COM 375,000 10,178 0.42%
61 INVUITY INC 1,690,498 9,720 0.40%
62 Nivalis Therapeutics Inc 3,732,412 8,361 0.34%
63 AKARI THERAPEUTICS PLC 1,150,700 8,101 0.33%
64 LOXO ONCOLOGY INC COM 251,000 8,061 0.33%
65 Oxford Immunotec Global PLC 529,197 7,911 0.33%
66 KERYX BIOPHARMACEUTICALS INC 1,291,531 7,568 0.31%
67 ARALEZ PHARMACEUTICALS INC 1,644,583 7,253 0.30%
68 AXOVANT SCIENCES LTD 568,005 7,055 0.29%
69 FIVE PRIME THERAPEUTICS INC 138,000 6,915 0.28%
70 EXACT SCIENCES CORP 500,000 6,680 0.27%
71 ALIMERA SCIENCES INC 5,878,015 6,348 0.26%
72 ADVANCED ACCELERATOR APPLIC SPONSORED ADS 210,000 5,620 0.23%
73 MYOKARDIA INC COM 424,800 5,501 0.23%
74 ARDELYX INC COM 373,643 5,306 0.22%
75 CAS MED SYS INC 3,200,000 5,152 0.21%
76 RA PHARMACEUTICALS INC COM 323,630 4,916 0.20%
77 ESSA Pharma 2,121,601 4,646 0.19%
78 STEADYMED LTD 1,756,370 4,567 0.19%
79 SCYNEXIS INC 1,048,000 3,343 0.14%
80 KEMPHARM INC 1,084,443 3,199 0.13%
81 NANOSTRING TECHNOLOGIES INC 139,000 3,100 0.13%
82 VOYAGER THERAPEUTICS INC 235,294 2,998 0.12%
83 GENOCEA BIOSCIENCES INC 687,257 2,831 0.12%
84 SANGAMO THERAPEUTICS INCORPORATED 837,963 2,556 0.11%
85 PSIVIDA CORP 1,492,824 2,553 0.11%
86 PROTEON THERAPEUTICS INC 1,332,599 2,532 0.10%
87 GLOBAL BLOOD THERAPEUTICS INCORPORATED 171,428 2,477 0.10%
88 Catabasis Pharmaceuticals Inc 682,940 2,465 0.10%
89 PROTEOSTASIS THERAPEUTICS IN 186,000 2,280 0.09%
90 Agile Therapeutics, Inc. 398,000 2,269 0.09%
91 CELLDEX THERAPEUTICS INC NEW 632,944 2,241 0.09%
92 BIOSCRIP INC 1,971,228 2,050 0.08%
93 Sierra Oncology, Inc. 1,166,619 1,738 0.07%
94 Hercules Offshore Inc 76,000 1,729 0.07%
95 PARATEK PHARMACEUTICALS INC 100,000 1,540 0.06%
96 NOVELION THERAPEUTICS INC 170,454 1,435 0.06%
97 NEOS THERAPEUTICS INC COM 229,166 1,341 0.06%
98 OCERA THERAPEUTICS INC 572,893 1,203 0.05%
99 THRESHOLD PHARMACEUTICAL INC 2,202,160 971 0.04%
100 STREAMLINE HEALTH SOLUTIONS COM 662,971 829 0.03%
Page 2 of 3