0001172661-17-000700.txt : 20170214
0001172661-17-000700.hdr.sgml : 20170214
20170214130255
ACCESSION NUMBER: 0001172661-17-000700
CONFORMED SUBMISSION TYPE: 13F-HR
PUBLIC DOCUMENT COUNT: 2
CONFORMED PERIOD OF REPORT: 20161231
FILED AS OF DATE: 20170214
DATE AS OF CHANGE: 20170214
EFFECTIVENESS DATE: 20170214
FILER:
COMPANY DATA:
COMPANY CONFORMED NAME: Rock Springs Capital Management LP
CENTRAL INDEX KEY: 0001595725
IRS NUMBER: 800944416
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 13F-HR
SEC ACT: 1934 Act
SEC FILE NUMBER: 028-16048
FILM NUMBER: 17606148
BUSINESS ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
BUSINESS PHONE: 4102200129
MAIL ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
13F-HR
1
primary_doc.xml
13F-HR
LIVE
false
true
false
0001595725
XXXXXXXX
12-31-2016
12-31-2016
false
Rock Springs Capital Management LP
650 South Exeter Street
Suite 1070
Baltimore
MD
21202
13F HOLDINGS REPORT
028-16048
N
Eric Brody
Vice President of Operations and Finance
410-220-0541
/s/ Eric Brody
Baltimore
MD
02-14-2017
0
133
1494403
INFORMATION TABLE
2
infotable.xml
ACADIA HEALTHCARE COMPANY IN
COM
00404A109
38313
1157500
SH
SOLE
1157500
0
0
ACHILLION PHARMACEUTICALS IN
COM
00448Q201
5679
1375000
SH
SOLE
1375000
0
0
ACLARIS THERAPEUTICS INC
COM
00461U105
29854
1100000
SH
SOLE
1100000
0
0
ADAPTIMMUNE THERAPEUTICS PLC
SPONDS ADR
00653A107
2734
675000
SH
SOLE
675000
0
0
ADURO BIOTECH INC
COM
00739L101
4731
415000
SH
SOLE
415000
0
0
ADVANCED ACCELERATOR APPLIC
SPONSORED ADS
00790T100
24887
930000
SH
SOLE
930000
0
0
AEGLEA BIOTHERAPEUTICS INC
COM
00773J103
2280
524089
SH
SOLE
524089
0
0
AETNA INC NEW
COM
00817Y108
54688
441000
SH
SOLE
441000
0
0
AIMMUNE THERAPEUTICS INC
COM
00900T107
5992
293000
SH
SOLE
293000
0
0
ALDER BIOPHARMACEUTICALS INC
COM
014339105
3786
182000
SH
SOLE
182000
0
0
ALEXION PHARMACEUTICALS INC
COM
015351109
56893
465000
SH
SOLE
465000
0
0
ALKERMES PLC
SHS
G01767105
6948
125000
SH
SOLE
125000
0
0
ALLERGAN PLC
SHS
G0177J108
34862
166000
SH
SOLE
166000
0
0
ALLERGAN PLC
PFD CONV SER A
G0177J116
3820
5000
SH
SOLE
5000
0
0
AMARIN CORP PLC
SPONS ADR NEW
023111206
15374
4991500
SH
SOLE
4991500
0
0
AMGEN INC
COM
031162100
14109
96500
SH
SOLE
96500
0
0
AMICUS THERAPEUTICS INC
COM
03152W109
3765
757500
SH
SOLE
757500
0
0
ANTHERA PHARMACEUTICALS INC
COM NEW
03674U201
247
380000
SH
SOLE
380000
0
0
ARDELYX INC
COM
039697107
28400
2000000
SH
SOLE
2000000
0
0
ARIAD PHARMACEUTICALS INC
COM
04033A100
3110
250000
SH
SOLE
250000
0
0
ASCENDIS PHARMA A S
SPONSORED ADR
04351P101
6578
325000
SH
SOLE
325000
0
0
ASSEMBLY BIOSCIENCES INC
COM
045396108
4739
390000
SH
SOLE
390000
0
0
ATHENAHEALTH INC
COM
04685W103
6599
62750
SH
SOLE
62750
0
0
ATYR PHARMA INC
COM
002120103
1021
475000
SH
SOLE
475000
0
0
AUDENTES THERAPEUTICS INC
COM
05070R104
8861
485000
SH
SOLE
485000
0
0
AVEXIS INC
COM
05366U100
6682
140000
SH
SOLE
140000
0
0
BEIGENE LTD
SPONSORED ADR
07725L102
8045
265000
SH
SOLE
265000
0
0
BIOGEN INC
COM
09062X103
13328
47000
SH
SOLE
47000
0
0
BIOMARIN PHARMACEUTICAL INC
COM
09061G101
10355
125000
SH
SOLE
125000
0
0
BLUEBIRD BIO INC
COM
09609G100
1758
28500
SH
SOLE
28500
0
0
BRISTOL MYERS SQUIBB CO
COM
110122108
26298
450000
SH
SOLE
450000
0
0
CARDIOME PHARMA CORP
COM NO PAR
14159U301
3312
1200000
SH
SOLE
1200000
0
0
CELGENE CORP
COM
151020104
28069
242500
SH
SOLE
242500
0
0
CERULEAN PHARMA INC
COM
15708Q105
443
625000
SH
SOLE
625000
0
0
CHIASMA INC
COM
16706W102
960
492500
SH
SOLE
492500
0
0
CHINA CORD BLOOD CORP
SHS
G21107100
5386
880000
SH
SOLE
880000
0
0
CIDARA THERAPEUTICS INC
COM
171757107
3120
300000
SH
SOLE
300000
0
0
CIGNA CORPORATION
COM
125509109
33614
252000
SH
SOLE
252000
0
0
CLEARSIDE BIOMEDICAL INC
COM
185063104
8359
935000
SH
SOLE
935000
0
0
CLOVIS ONCOLOGY INC
COM
189464100
4886
110000
SH
SOLE
110000
0
0
COHERUS BIOSCIENCES INC
COM
19249H103
13639
484500
SH
SOLE
484500
0
0
COLLEGIUM PHARMACEUTICAL INC
COM
19459J104
24912
1600000
SH
SOLE
1600000
0
0
COMPUGEN LTD
ORD
M25722105
4208
825000
SH
SOLE
825000
0
0
CORVUS PHARMACEUTICALS INC
COM
221015100
6435
450000
SH
SOLE
450000
0
0
DANAHER CORP DEL
COM
235851102
12454
160000
SH
SOLE
160000
0
0
DBV TECHNOLOGIES S A
SPONSORED ADR
23306J101
2564
73000
SH
SOLE
73000
0
0
DERMIRA INC
COM
24983L104
10998
362600
SH
SOLE
362600
0
0
DIMENSION THERAPEUTICS INC
COM
25433V105
1180
271370
SH
SOLE
271370
0
0
DYNAVAX TECHNOLOGIES CORP
COM NEW
268158201
652
165000
SH
SOLE
165000
0
0
EDWARDS LIFESCIENCES CORP
COM
28176E108
11291
120500
SH
SOLE
120500
0
0
EGALET CORP
COM
28226B104
2295
300000
SH
SOLE
300000
0
0
EGALET CORP
NOTE 5.500% 4/0
28226BAB0
6791
7800000
PRN
SOLE
7800000
0
0
ENVISION HEALTHCARE CORP
COM
29414D100
9177
145000
SH
SOLE
145000
0
0
EPIZYME INC
COM
29428V104
6897
570000
SH
SOLE
570000
0
0
EXACT SCIENCES CORP
COM
30063P105
6024
450900
SH
SOLE
450900
0
0
EXELIXIS INC
COM
30161Q104
2609
175000
SH
SOLE
175000
0
0
FIBROGEN INC
COM
31572Q808
5136
240000
SH
SOLE
240000
0
0
FIVE PRIME THERAPEUTICS INC
COM
33830X104
8218
164000
SH
SOLE
164000
0
0
GALAPAGOS NV
SPON ADR
36315X101
13480
210000
SH
SOLE
210000
0
0
GENOCEA BIOSCIENCES INC
COM
372427104
1978
480000
SH
SOLE
480000
0
0
GILEAD SCIENCES INC
COM
375558103
19800
276500
SH
SOLE
276500
0
0
GLOBAL BLOOD THERAPEUTICS IN
COM
37890U108
1394
96500
SH
SOLE
96500
0
0
GW PHARMACEUTICALS PLC
ADS
36197T103
39783
356000
SH
SOLE
356000
0
0
HEALTHEQUITY INC
COM
42226A107
2026
50000
SH
SOLE
50000
0
0
HEALTHSOUTH CORP
COM NEW
421924309
10929
265000
SH
SOLE
265000
0
0
HILL ROM HLDGS INC
COM
431475102
2667
47500
SH
SOLE
47500
0
0
HOLOGIC INC
COM
436440101
10632
265000
SH
SOLE
265000
0
0
INCYTE CORP
COM
45337C102
16946
169000
SH
SOLE
169000
0
0
INFINITY PHARMACEUTICALS INC
COM
45665G303
365
270000
SH
SOLE
270000
0
0
INNOVIVA INC
COM
45781M101
3605
336900
SH
SOLE
336900
0
0
INSMED INC
COM PAR $.01
457669307
6192
468000
SH
SOLE
468000
0
0
INTERSECT ENT INC
COM
46071F103
4175
345000
SH
SOLE
345000
0
0
INTRA CELLULAR THERAPIES INC
COM
46116X101
2867
190000
SH
SOLE
190000
0
0
INTUITIVE SURGICAL INC
COM NEW
46120E602
30440
48000
SH
SOLE
48000
0
0
INVITAE CORP
COM
46185L103
9528
1200000
SH
SOLE
1200000
0
0
JAZZ PHARMACEUTICALS PLC
SHS USD
G50871105
13487
123700
SH
SOLE
123700
0
0
JUNO THERAPEUTICS INC
COM
48205A109
3713
197001
SH
SOLE
197001
0
0
KITE PHARMA INC
COM
49803L109
3542
79000
SH
SOLE
79000
0
0
LIGAND PHARMACEUTICALS INC
COM NEW
53220K504
7113
70000
SH
SOLE
70000
0
0
LILLY ELI & CO
COM
532457108
23904
325000
SH
SOLE
325000
0
0
MACROGENICS INC
COM
556099109
4599
225000
SH
SOLE
225000
0
0
MADRIGAL PHARMACEUTICALS INC
COM
558868105
2606
174891
SH
SOLE
174891
0
0
MEDICINES CO
COM
584688105
23741
699500
SH
SOLE
699500
0
0
MEDICINES CO
NOTE 2.500% 1/1
584688AE5
3611
3000000
PRN
SOLE
3000000
0
0
MEDPACE HLDGS INC
COM
58506Q109
4869
135000
SH
SOLE
135000
0
0
MERCK & CO INC
COM
58933Y105
44153
750000
SH
SOLE
750000
0
0
MERUS N V
COM
N5749R100
8444
400000
SH
SOLE
400000
0
0
MYOVANT SCIENCES LTD
COM
G637AM102
1115
89600
SH
SOLE
89600
0
0
NABRIVA THERAPEUTICS AG
SPONSORED ADR
62957M104
3124
525000
SH
SOLE
525000
0
0
NEUROCRINE BIOSCIENCES INC
COM
64125C109
15867
410000
SH
SOLE
410000
0
0
NIVALIS THERAPEUTICS INC
COM
65481J109
1095
489000
SH
SOLE
489000
0
0
NOVADAQ TECHNOLOGIES INC
COM
66987G102
3935
555000
SH
SOLE
555000
0
0
NOVAVAX INC
COM
670002104
1033
820000
SH
SOLE
820000
0
0
NOVOCURE LTD
ORD SHS
G6674U108
1682
214316
SH
SOLE
214316
0
0
OREXIGEN THERAPEUTICS INC
COM NEW
686164302
288
165300
SH
SOLE
165300
0
0
OTONOMY INC
COM
68906L105
3339
210000
SH
SOLE
210000
0
0
PACIRA PHARMACEUTICALS INC
COM
695127100
23030
713000
SH
SOLE
713000
0
0
PARATEK PHARMACEUTICALS INC
COM
699374302
8093
525500
SH
SOLE
525500
0
0
PATHEON N V
SHS
N6865W105
11484
400000
SH
SOLE
400000
0
0
PENUMBRA INC
COM
70975L107
18853
295500
SH
SOLE
295500
0
0
PERRIGO CO PLC
SHS
G97822103
774
9300
SH
SOLE
9300
0
0
PRA HEALTH SCIENCES INC
COM
69354M108
16536
300000
SH
SOLE
300000
0
0
PROTEOSTASIS THERAPEUTICS IN
COM
74373B109
5517
450000
SH
SOLE
450000
0
0
PROTHENA CORP PLC
SHS
G72800108
15224
309500
SH
SOLE
309500
0
0
PUMA BIOTECHNOLOGY INC
COM
74587V107
2901
94500
SH
SOLE
94500
0
0
RA PHARMACEUTICALS INC
COM
74933V108
12547
826000
SH
SOLE
826000
0
0
RADIUS HEALTH INC
COM NEW
750469207
34617
910250
SH
SOLE
910250
0
0
REGENERON PHARMACEUTICALS
COM
75886F107
7158
19500
SH
SOLE
19500
0
0
RETROPHIN INC
COM
761299106
9881
522000
SH
SOLE
522000
0
0
RIGEL PHARMACEUTICALS INC
COM NEW
766559603
2380
1000000
SH
SOLE
1000000
0
0
RTI SURGICAL INC
COM
74975N105
6045
1860000
SH
SOLE
1860000
0
0
SAREPTA THERAPEUTICS INC
COM
803607100
5264
191900
SH
SOLE
191900
0
0
SCYNEXIS INC
COM
811292101
2424
760000
SH
SOLE
760000
0
0
SERES THERAPEUTICS INC
COM
81750R102
2178
220000
SH
SOLE
220000
0
0
SHIRE PLC
SPONSORED ADR
82481R106
23376
137200
SH
SOLE
137200
0
0
SPARK THERAPEUTICS INC
COM
84652J103
31188
625000
SH
SOLE
625000
0
0
STERIS PLC
SHS USD
G84720104
4380
65000
SH
SOLE
65000
0
0
TANDEM DIABETES CARE INC
COM
875372104
1279
595000
SH
SOLE
595000
0
0
TESARO INC
COM
881569107
82503
613500
SH
SOLE
613500
0
0
TETRAPHASE PHARMACEUTICALS I
COM
88165N105
2813
698000
SH
SOLE
698000
0
0
THERAPEUTICSMD INC
COM
88338N107
9924
1720000
SH
SOLE
1720000
0
0
THERAVANCE BIOPHARMA INC
NOTE 3.250%11/0
88339KAA0
1713
1500000
PRN
SOLE
1500000
0
0
THERAVANCE BIOPHARMA INC
COM
G8807B106
19128
600000
SH
SOLE
600000
0
0
ULTRAGENYX PHARMACEUTICAL IN
COM
90400D108
11232
159750
SH
SOLE
159750
0
0
UNITEDHEALTH GROUP INC
COM
91324P102
26407
165000
SH
SOLE
165000
0
0
VALEANT PHARMACEUTICALS INTL
COM
91911K102
1037
71400
SH
SOLE
71400
0
0
VERTEX PHARMACEUTICALS INC
COM
92532F100
6612
89750
SH
SOLE
89750
0
0
WALGREENS BOOTS ALLIANCE INC
COM
931427108
13324
161000
SH
SOLE
161000
0
0
WELLCARE HEALTH PLANS INC
COM
94946T106
32145
234500
SH
SOLE
234500
0
0
WILLIS TOWERS WATSON PUB LTD
SHS
G96629103
13451
110000
SH
SOLE
110000
0
0
WRIGHT MED GROUP INC
NOTE 2.000% 2/1
98235TAE7
1047
1000000
PRN
SOLE
1000000
0
0
WRIGHT MED GROUP N V
ORD SHS 0.03 PAR
N96617118
15328
667000
SH
SOLE
667000
0
0
ZIMMER BIOMET HLDGS INC
COM
98956P102
2178
21100
SH
SOLE
21100
0
0