Rock Springs Capital Management LP Q4 2020 Filing

Filed February 16, 2021

Portfolio Value

$4.7B

Holdings

154

Report Date

Q4 2020

Filing Type

13F-HR

All Holdings (154 positions)

#	Stock	Shares	Value	% Portfolio
101	—KINNATE BIOPHARMA INC	324,686	$12.9M	0.27%
102	AGLEUSDAEGLEA BIOTHERAPEUTICS INC	1,580,000	$12.4M	0.26%
103	—FIVE PRIME THERAPEUTICS INC	721,633	$12.3M	0.26%
104	TBPHTHERAVANCE BIOPHARMA INC	678,200	$12.1M	0.26%
105	—TRANSLATE BIO INC	643,500	$11.9M	0.25%
106	FGENEURFIBROGEN INC	309,387	$11.5M	0.24%
107	—FUSION PHARMACEUTICALS INC	948,327	$11.1M	0.24%
108	NGMUSDNGM BIOPHARMACEUTICALS INC	360,500	$10.9M	0.23%
109	TXG10X GENOMICS INC	76,000	$10.8M	0.23%
110	AUPHAURINIA PHARMACEUTICALS INC	773,669	$10.7M	0.23%
111	290ACHINOOK THERAPEUTICS INC	668,849	$10.6M	0.22%
112	—PARATEK PHARMACEUTICALS INC	1,680,614	$10.5M	0.22%
113	—CHIASMA INC	2,136,514	$9.3M	0.20%
114	TREURTRILLIUM THERAPEUTICS INC	618,500	$9.1M	0.19%
115	—SIERRA ONCOLOGY INC	567,358	$9.1M	0.19%
116	CNMDCONMED CORP	78,000	$8.7M	0.19%
117	LEGNLEGEND BIOTECH CORP	309,418	$8.7M	0.18%
118	NRIXNURIX THERAPEUTICS INC	257,250	$8.5M	0.18%
119	ADAPYADAPTIMMUNE THERAPEUTICS PLC	1,545,000	$8.3M	0.18%
120	WSTWEST PHARMACEUTICAL SVSC INC	28,500	$8.1M	0.17%
121	—IMARA INC	360,500	$7.9M	0.17%
122	XENEXENON PHARMACEUTICALS INC	515,000	$7.9M	0.17%
123	QUREUNIQURE NV	208,500	$7.5M	0.16%
124	DVAXDYNAVAX TECHNOLOGIES CORP	1,649,420	$7.3M	0.16%
125	BCELATRECA INC	451,230	$7.3M	0.15%
126	—ODONATE THERAPEUTICS INC	377,700	$7.3M	0.15%
127	MGNXMACROGENICS INC	309,510	$7.1M	0.15%
128	OSWONESPAWORLD HOLDINGS LIMITED	690,000	$7.0M	0.15%
129	INSM 1.75 01/15/25INSMED INC	6,000,000	$6.8M	0.14%
130	—CONSTELLATION PHARMCETICLS I	232,743	$6.7M	0.14%
131	ANABANAPTYSBIO INC	309,413	$6.7M	0.14%
132	GRTXGALERA THERAPEUTICS INC	567,552	$5.8M	0.12%
133	5E7ITEOS THERAPEUTICS INC	159,957	$5.4M	0.11%
134	HQYHEALTHEQUITY INC	75,000	$5.2M	0.11%
135	—PANACEA ACQUISITION CORP	402,088	$5.1M	0.11%
136	CERTCERTARA INC	150,000	$5.1M	0.11%
137	—ACELRX PHARMACEUTICALS INC	3,782,457	$4.7M	0.10%
138	—PHASEBIO PHARMACEUTICALS INC	1,314,374	$4.4M	0.09%
139	—BCLS ACQUISITION CORP	309,000	$3.4M	0.07%
140	TVTX 2.5 09/15/25RETROPHIN INC	3,250,000	$3.3M	0.07%
141	PSTXUSDPOSEIDA THERAPEUTICS INC	289,754	$3.2M	0.07%
142	—GLOBAL CORD BLOOD CORPORATIO	775,000	$2.9M	0.06%
143	—LIFESCI ACQUISITION II CORP	206,200	$2.2M	0.05%
144	—EUCRATES BIOMEDICAL ACQU COR	206,000	$2.2M	0.05%
145	—JIYA ACQUISITION CORP	206,200	$2.1M	0.05%
146	—TURMERIC ACQUISITION CORP	206,000	$2.1M	0.04%
147	—POPULATION HEALTH INVS CO IN	201,044	$2.1M	0.04%
148	MLTXHELIX ACQUISITION CORP	154,500	$1.8M	0.04%
149	—THERAVANCE BIOPHARMA INC	1,500,000	$1.4M	0.03%
150	NBIX 2.25 05/15/24NEUROCRINE BIOSCIENCES INC	1,000,000	$1.4M	0.03%
151	—RADIUS HEALTH INC	1,500,000	$1.3M	0.03%
152	—PACIRA BIOSCIENCES INC	1,000,000	$1.1M	0.02%
153	ANNXANNEXON INC	45,413	$1.1M	0.02%
154	NVRO 2.75 04/01/25NEVRO CORP	500,000	$912K	0.02%

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