Rock Springs Capital Management LP Q2 2021 Filing

Filed August 16, 2021

Portfolio Value

$5.1B

Holdings

156

Report Date

Q2 2021

Filing Type

13F-HR

All Holdings (156 positions)

#	Stock	Shares	Value	% Portfolio	Type
101	LEGNLEGEND BIOTECH CORP	312,618	$12.8M	0.25%
102	GOSS 5 06/01/27GOSSAMER BIO INC	15,573,000	$12.6M	0.25%
103	MGNXMACROGENICS INC	455,816	$12.2M	0.24%
104	RYTMRHYTHM PHARMACEUTICALS INC	606,280	$11.9M	0.23%
105	GLPGGALAPAGOS NV	165,000	$11.4M	0.22%
106	—PARATEK PHARMACEUTICALS INC	1,654,714	$11.3M	0.22%
107	AGLEUSDAEGLEA BIOTHERAPEUTICS INC	1,577,296	$11.0M	0.22%
108	PRLDPRELUDE THERAPEUTICS INC	382,359	$10.9M	0.22%
109	XENEXENON PHARMACEUTICALS INC	572,500	$10.7M	0.21%
110	OKURRENEO PHARMACEUTICALS INC	1,129,024	$10.5M	0.21%
111	CGENCOMPUGEN LTD	1,236,988	$10.2M	0.20%
112	WSTWEST PHARMACEUTICAL SVSC INC	28,500	$10.2M	0.20%
113	AUPHAURINIA PHARMACEUTICALS INC	785,769	$10.2M	0.20%
114	TBPHTHERAVANCE BIOPHARMA INC	687,500	$10.0M	0.20%
115	APLSAPELLIS PHARMACEUTICALS INC	157,900	$10.0M	0.20%	Call
116	—ORION ACQUISITION CORP	1,000,000	$9.9M	0.20%
117	AM6AMICUS THERAPEUTICS INC	1,012,506	$9.8M	0.19%
118	290ACHINOOK THERAPEUTICS INC	682,449	$9.6M	0.19%
119	STTKSHATTUCK LABS INC	313,499	$9.1M	0.18%
120	—F-STAR THERAPEUTICS INC	1,054,232	$9.1M	0.18%
121	DAWNDAY ONE BIOPHARMACEUTICALS I	373,739	$8.5M	0.17%
122	NRIXNURIX THERAPEUTICS INC	315,350	$8.4M	0.17%
123	—CONSTELLATION PHARMCETICLS I	247,200	$8.4M	0.17%
124	FGENEURFIBROGEN INC	312,687	$8.3M	0.16%
125	—KINNATE BIOPHARMA INC	331,586	$7.7M	0.15%
126	—FUSION PHARMACEUTICALS INC	948,327	$7.7M	0.15%
127	—ATHIRA PHARMA INC	748,202	$7.7M	0.15%
128	—PHASEBIO PHARMACEUTICALS INC	1,843,764	$6.9M	0.14%
129	TARAPROTARA THERAPEUTICS INC	693,542	$6.8M	0.13%
130	DSGNDESIGN THERAPEUTICS INC	332,050	$6.6M	0.13%
131	ADAPYADAPTIMMUNE THERAPEUTICS PLC	1,545,000	$6.6M	0.13%
132	TREURTRILLIUM THERAPEUTICS INC	628,500	$6.1M	0.12%
133	FATEFATE THERAPEUTICS INC	70,000	$6.1M	0.12%
134	ATAIATAI LIFE SCIENCES NV	315,028	$5.8M	0.12%
135	GRTXGALERA THERAPEUTICS INC	568,252	$5.6M	0.11%
136	EDAEDAP TMS S A	760,900	$5.4M	0.11%
137	—ACELRX PHARMACEUTICALS INC	3,788,757	$5.2M	0.10%
138	BCELATRECA INC	459,830	$3.9M	0.08%
139	OVASUSDTEMPEST THERAPEUTICS INC	310,161	$3.5M	0.07%
140	—BCLS ACQUISITION CORP	309,000	$3.3M	0.06%
141	PSTXUSDPOSEIDA THERAPEUTICS INC	289,754	$2.9M	0.06%
142	TVTX 2.5 09/15/25RETROPHIN INC	3,250,000	$2.8M	0.05%
143	NUVBNUVATION BIO INC	241,485	$2.2M	0.04%
144	—EUCRATES BIOMEDICAL ACQU COR	206,000	$2.1M	0.04%
145	—FS DEVELOPMENT CORP II	209,332	$2.1M	0.04%
146	—TURMERIC ACQUISITION CORP	206,000	$2.1M	0.04%
147	—JIYA ACQUISITION CORP	206,200	$2.0M	0.04%
148	—POPULATION HEALTH INVS CO IN	201,044	$2.0M	0.04%
149	MLTXHELIX ACQUISITION CORP	154,500	$1.6M	0.03%
150	—THERAVANCE BIOPHARMA INC	1,500,000	$1.4M	0.03%
151	—RADIUS HEALTH INC	1,500,000	$1.4M	0.03%
152	NBIX 2.25 05/15/24NEUROCRINE BIOSCIENCES INC	1,000,000	$1.3M	0.03%
153	—PACIRA BIOSCIENCES INC	1,000,000	$1.1M	0.02%
154	NVRO 2.75 04/01/25NEVRO CORP	500,000	$866K	0.02%
155	NUVB/WSNUVATION BIO INC	134,028	$348K	0.01%
156	—AERPIO PHARMACEUTICALS INC	133,375	$225K	0.00%

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