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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 (2016Q1)
Original 13F HR (0001140361-16-065661) filed in 2016.05.16
#
Name
Shares
Value ($)
%
Options
Notes
1 HORIZON PHARMA INVT LTD 82,600,000 70,475 3.00% PRN
2 HEALTHWAYS INC 76,925,000 70,595 3.01% PRN
3 ARRAY BIOPHARMA INC 3 06/01/2020 45,000,000 35,876 1.53% PRN
4 ENDOLOGIX INC 40,941,000 29,871 1.27% PRN
5 WRIGHT MED GROUP INC SR CONV NT 2 20 40,050,000 35,961 1.53% PRN
6 ENDOLOGIX INC 40,000,000 38,632 1.64% PRN
7 HEARTWARE INTL INC 39,226,000 36,498 1.55% PRN
8 SPECTRANETICS CORP 29,831,000 23,643 1.01% PRN
9 FLUIDIGM CORP DEL 27,715,000 15,353 0.65% PRN
10 HORIZON PHARMA PLC 13,740,261 227,676 9.69%
11 XENOPORT INC 11,572,125 52,190 2.22%
12 ARRAY BIOPHARMA INC 9,529,361 28,112 1.20%
13 CEPHEID 7,750,000 6,917 0.29% PRN
14 VANDA PHARMACEUTICALS INC COM 5,996,691 50,132 2.13%
15 ALIMERA SCIENCES INC 5,878,015 10,287 0.44%
16 NXSTAGE MED INC COM 5,506,028 82,535 3.51%
17 UNIVERSAL AMERN CORP NEW 5,285,500 37,738 1.61%
18 JAZZ INVESTMENTS I LTD 5,000,000 5,111 0.22% PRN
19 ALPHATEC HOLDINGS INC 4,982,738 1,196 0.05%
20 INFINITY PHARMACEUTICALS INC 4,398,862 23,182 0.99%
21 FLAMEL TECHNOLOGIES SA SPONSORED ADR 4,072,809 44,964 1.91%
22 Nivalis Therapeutics Inc 3,732,412 15,564 0.66%
23 XENCOR INC COM 3,467,512 46,534 1.98%
24 AXOGEN INC 3,381,439 18,125 0.77%
25 EHEALTH INC COM 3,264,588 30,654 1.31%
26 CAS MED SYS INC 3,200,000 4,544 0.19%
27 PORTOLA PHARMACEUTICALS INC 3,089,785 63,032 2.68%
28 ZAFGEN INC COM 3,055,603 20,411 0.87%
29 Sierra Oncology, Inc. 3,001,302 20,229 0.86%
30 AERIE PHARMACEUTICALS INC COM 2,632,482 32,011 1.36%
31 ESSA Pharma 2,587,215 8,408 0.36%
32 Hercules Offshore Inc 2,475,387 24,977 1.06%
33 NOVAVAX INC COM 2,456,261 12,674 0.54%
34 RIGEL PHARMACEUTICAL INC 2,397,855 4,988 0.21%
35 RITE AID CORP 2,393,072 19,504 0.83%
36 AAC HLDGS INC 2,294,936 45,417 1.93%
37 AVEXIS INC COM 2,236,701 60,928 2.59%
38 RELYPSA INC 1,873,471 25,386 1.08%
39 MYLAN N V 1,832,535 84,938 3.62%
40 ENDOCHOICE HLDGS INC 1,823,309 9,499 0.40%
41 EDITAS MEDICINE INCORPORATED 1,709,400 59,043 2.51%
42 GLAXOSMITHKLINE PLC 1,675,385 67,937 2.89%
43 ARALEZ PHARMACEUTICALS INC 1,644,583 5,838 0.25%
44 PSIVIDA CORP 1,492,824 4,001 0.17%
45 KEMPHARM INC 1,420,497 20,597 0.88%
46 STEADYMED LTD 1,346,744 3,313 0.14%
47 INVUITY INC 1,327,009 9,581 0.41%
48 TONIX PHARMACEUTICALS HOLDING 1,315,551 3,170 0.13%
49 Proteon Therapeutics Inc 1,265,343 9,794 0.42%
50 GLOBAL BLOOD THERAPEUTICS INCORPORATED 1,193,811 18,934 0.81%
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