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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
1 HORIZON PHARMA INVT LTD 82,600,000 78,342 3.22% PRN
2 ENDOLOGIX INC 51,117,000 46,140 1.90% PRN
3 TRN 48,000,000 40,401 1.66% PRN
4 ARRAY BIOPHARMA INC 3 06/01/2020 45,000,000 62,545 2.57% PRN
5 ENDOLOGIX INC 40,500,000 35,425 1.46% PRN
6 WRIGHT MED GROUP INC SR CONV NT 2 20 40,050,000 41,818 1.72% PRN
7 ISIS PHARMACEUTICALS INC DEL SR CONV NT 1 21 33,186,000 33,802 1.39% PRN
8 FLUIDIGM CORP DEL 27,715,000 19,228 0.79% PRN
9 NEVRO CORP 27,600,000 29,494 1.21% PRN
10 HEALTHWAYS INC 25,000,000 32,381 1.33% PRN
11 MOLINA HEALTHCARE INC 25,000,000 28,480 1.17% PRN
12 CLOVIS ONCOLOGY INC 16,500,000 16,979 0.70% PRN
13 HORIZON PHARMA PLC 8,956,988 144,924 5.96%
14 ALIMERA SCIENCES INC 5,878,015 6,348 0.26%
15 PORTOLA PHARMACEUTICALS INC 4,654,447 104,446 4.30%
16 NXSTAGE MED INC COM 4,258,196 111,607 4.59%
17 FLAMEL TECHNOLOGIES SA SPONSORED ADR 4,072,809 42,316 1.74%
18 UNIVERSAL AMERN CORP NEW 3,774,090 37,552 1.55%
19 Nivalis Therapeutics Inc 3,732,412 8,361 0.34%
20 VANDA PHARMACEUTICALS INC COM 3,424,676 54,624 2.25%
21 BIOCRYST PHARMACEUTICALS 3,237,734 20,495 0.84%
22 CAS MED SYS INC 3,200,000 5,152 0.21%
23 EHEALTH INC COM 2,640,609 28,122 1.16%
24 AVEXIS INC COM 2,236,701 106,758 4.39%
25 THRESHOLD PHARMACEUTICAL INC 2,202,160 971 0.04%
26 ESSA Pharma 2,121,601 4,646 0.19%
27 SOCIETAL CDMO INC 2,075,000 16,725 0.69%
28 XENCOR INC COM 2,020,000 53,166 2.19%
29 LANNET INC COM NEW 2,007,551 44,266 1.82%
30 AAC HLDGS INC 1,975,347 14,302 0.59%
31 BIOSCRIP INC 1,971,228 2,050 0.08%
32 BLUEPRINT MEDICINES CORP COM 1,842,415 51,680 2.13%
33 AERIE PHARMACEUTICALS INC COM 1,838,829 69,600 2.86%
34 AXOGEN INC 1,838,225 16,544 0.68%
35 SYROS PHARMACEUTICALS INC 1,812,778 22,043 0.91%
36 MYLAN N V 1,766,378 67,387 2.77%
37 STEADYMED LTD 1,756,370 4,567 0.19%
38 DBV TECHNOLOGIES S A 1,743,229 61,240 2.52%
39 EDITAS MEDICINE INCORPORATED 1,709,400 27,744 1.14%
40 INVUITY INC 1,690,498 9,720 0.40%
41 ARRAY BIOPHARMA INC 1,650,000 14,504 0.60%
42 ARALEZ PHARMACEUTICALS INC 1,644,583 7,253 0.30%
43 EPIZYME INC COM 1,601,049 19,373 0.80%
44 ADEPTUS HEALTH INC 1,600,861 12,231 0.50%
45 MYOVANT SCIENCES LTD 1,496,675 18,619 0.77%
46 PSIVIDA CORP 1,492,824 2,553 0.11%
47 Audentes Therapeutics, Inc. 1,403,653 25,645 1.06%
48 Proteon Therapeutics Inc 1,332,599 2,532 0.10%
49 KERYX BIOPHARMACEUTICALS INCORPORATED 1,291,531 7,568 0.31%
50 FOAMIX PHARMACEUTICALS LTD 1,232,844 13,685 0.56%
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