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Institutional Investment Manager
Rock Springs Capital Management LP
Rock Springs Capital Management LP (CIK: 0001595725) incorporated in Delaware, located at 650 South Exeter Street, Baltimore, MD. Institutional holdings reported to the SEC.

Institutional Holdings (2016Q4)
Portfolio Summary: 133 holdings with a total value of $1,494,403,000.
#
Name
Shares
Value ($)
%
Options
Notes
101 TETRAPHASE PHARMACEUTICALS INC COM 698,000 2,813,000 0.19%
102 ADAPTIMMUNE THERAPEUTICS PLC 675,000 2,734,000 0.18%
103 HILL ROM HLDGS INC 47,500 2,667,000 0.18%
104 EXELIXIS INC 175,000 2,609,000 0.17%
105 MADRIGAL PHARMACEUTICALS INC 174,891 2,606,000 0.17%
106 DBV TECHNOLOGIES S A 73,000 2,564,000 0.17%
107 SCYNEXIS INC 760,000 2,424,000 0.16%
108 RIGEL PHARMACEUTICAL INC 1,000,000 2,380,000 0.16%
109 Egalet Corp 300,000 2,295,000 0.15%
110 AEGLEA BIOTHERAPEUTICS INC 524,089 2,280,000 0.15%
111 ZIMMER BIOMET HLDGS INC 21,100 2,178,000 0.15%
112 SERES THERAPEUTICS INC 220,000 2,178,000 0.15%
113 HEALTHEQUITY INC 50,000 2,026,000 0.14%
114 GENOCEA BIOSCIENCES INC 480,000 1,978,000 0.13%
115 BLUEBIRD BIO INC COM 28,500 1,758,000 0.12%
116 THERAVANCE BIOPHARMA INC 1,500,000 1,713,000 0.11% PRN
117 NOVOCURE LTD 214,316 1,682,000 0.11%
118 GLOBAL BLOOD THERAPEUTICS INCORPORATED 96,500 1,394,000 0.09%
119 TANDEM DIABETES CARE INC COM 595,000 1,279,000 0.09%
120 DIMENSION THERAPEUTICS INC 271,370 1,180,000 0.08%
121 MYOVANT SCIENCES LTD 89,600 1,115,000 0.07%
122 Nivalis Therapeutics Inc 489,000 1,095,000 0.07%
123 WRIGHT MED GROUP INC SR CONV NT 2 20 1,000,000 1,047,000 0.07% PRN
124 VALEANT PHARMACEUTICALS INTL 71,400 1,037,000 0.07%
125 NOVAVAX INC COM 820,000 1,033,000 0.07%
126 Life Technologies Corp 475,000 1,021,000 0.07%
127 CHIASMA INC 492,500 960,000 0.06%
128 PERRIGO CO PLC 9,300 774,000 0.05%
129 DYNAVAX TECHNOLOGIES CORP 165,000 652,000 0.04%
130 CERULEAN PHARMA INC 625,000 443,000 0.03%
131 INFINITY PHARMACEUTICALS INC 270,000 365,000 0.02%
132 OREXIGEN THERAPEUTICS INC 165,300 288,000 0.02%
133 ANTHERA PHARMACEUTICALS I 380,000 247,000 0.02%
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Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001172661-17-000700, filed 2017.02.14).

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.