Dark
Light
System
Institutional Investment Manager
BAKER BROS. ADVISORS LP
BAKER BROS. ADVISORS LP (CIK: 0001263508) incorporated in Delaware, located at 860 Washington Street, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q1)
Original 13F HR (0001144204-14-031196) filed in 2014.05.15
#
Name
Shares
Value ($)
%
Options
Notes
51 INCYTE CORP 14,835,559 793,999 10.09%
52 INCYTE CORP SR NT CONV 4.750% 10/01/15 B/EDTD 03/30/10 0221 UBS FINANCIAL SERVICES INC. A/C MR06471 40,446,000 245,887 3.13% PRN
53 INFINITY PHARMACEUTICALS INC 624,050 7,420 0.09%
54 INSMED INC 554,050 10,549 0.13%
55 INTERCEPT PHARMACEUTICALS INCORPORATED 256,375 84,550 1.07%
56 INTERMUNE INC 4,324,843 144,752 1.84%
57 IONIS PHARMACEUTICAL 96,303 4,161 0.05%
58 IRONWOOD PHARMACEUTICALS INC 446,160 5,497 0.07%
59 Incyte Corporation 259,000,000 326,745 4.15% PRN
60 Incyte Corporation 274,500,000 350,417 4.45% PRN
61 Intermune 16,860,000 30,590 0.39% PRN
62 Intermune 41,000,000 107,856 1.37% PRN
63 KYTHERA BIOPHARMACEUTICALS I 311,255 12,375 0.16%
64 Karyopharm 59,095 1,825 0.02%
65 LA JOLLA PHARMACEUTICAL CO 221,631 2,394 0.03%
66 LIGAND PHARMACEUTICALS INC 73,400 4,937 0.06%
67 MACROGENICS INC 96,165 2,676 0.03%
68 MAST THERAPEUTICS INC 3,000,000 2,040 0.03%
69 MIRATI THERAPEUTICS INC COM 2,380,074 45,388 0.58%
70 Medivation Inc 04/01/2017 2.625% 39,500,000 56,288 0.72% PRN
71 NEUROCRINE BIOSCIENCES INC 447,874 7,211 0.09%
72 NOVAVAX INC 1,223,362 5,542 0.07%
73 OMEROS CORP 753,804 9,098 0.12%
74 OPHTHOTECH CORP 36,776 1,314 0.02%
75 ORASURE TECHNOLOGIES INC 234,664 1,870 0.02%
76 PHARMACYCLICS INC 8,737,888 875,711 11.13%
77 PORTOLA PHARMACEUTICALS INC 182,591 4,729 0.06%
78 PROTHENA CORP PLC 230,142 8,817 0.11%
79 Progenics Pharmaceuticals Inc 4,449,797 18,200 0.23%
80 QLT INC 1,535,863 8,539 0.11%
81 Questcor 717,745 46,603 0.59%
82 REGADO BIOSCIENCES INC 400,000 5,008 0.06%
83 REPROS THERAPEUTICS INC COM 2,778,654 49,293 0.63%
84 RETROPHIN INC 197,178 4,194 0.05%
85 RIGEL PHARMACEUTICALS INC 481,972 1,870 0.02%
86 Receptos Inc 23,900 1,002 0.01%
87 SALIX PHARMACEUTICALS INC 3,621 375 0.00%
88 SANGAMO THERAPEUTICS INCORPORATED 522,764 9,452 0.12%
89 SEATTLE GENETICS INC 20,739,426 944,887 12.01%
90 STEMLINE THERAPEUTICS INC 338,671 6,895 0.09%
91 SYNAGEVA BIOPHARMA CORP 10,648,182 883,480 11.23%
92 SYNERGY PHARMACEUTICALS DEL 1,758,271 9,336 0.12%
93 SYNTA PHARMACEUTICALS CORP 500,000 2,155 0.03%
94 Salix Pharmaceuticals Inc 05/15/2015 2.750% 219,440,000 491,957 6.25% PRN
95 Salix Pharmaceuticals Ltd 15,000,000 25,289 0.32% PRN
96 TESARO 31,218 920 0.01%
97 TG THERAPEUTICS INC 2,160,965 14,911 0.19%
98 THRESHOLD PHARMACEUTICAL INC 1,826,358 8,693 0.11%
99 Tekmira Pharmaceuticals Corp. 484,156 10,405 0.13%
100 ULTRAGENYX PHARMACEUTICAL INC COM 100,000 4,889 0.06%
Page 2 of 3