0001172661-21-001834.txt : 20210816 0001172661-21-001834.hdr.sgml : 20210816 20210816161057 ACCESSION NUMBER: 0001172661-21-001834 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20210630 FILED AS OF DATE: 20210816 DATE AS OF CHANGE: 20210816 EFFECTIVENESS DATE: 20210816 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: 211178234 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 06-30-2021 06-30-2021 false Rock Springs Capital Management LP

650 South Exeter Street Suite 1070 Baltimore MD 21202

13F HOLDINGS REPORT 028-16048 N Nnamdi Etoh 410-220-0129 /s/ Nnamdi Etoh Baltimore MD 08-16-2021 0 156 5059825 INFORMATION TABLE 2 infotable.xml ABCAM PLC ADS 000380204 20896 1097500 SH SOLE 1097500 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 43925 700000 SH SOLE 700000 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 24390 1000000 SH SOLE 1000000 0 0 ACCOLADE INC COM 00437E102 36116 665000 SH SOLE 665000 0 0 ACELRX PHARMACEUTICALS INC COM 00444T100 5228 3788757 SH SOLE 3788757 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 66066 3762312 SH SOLE 3762312 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 6582 1545000 SH SOLE 1545000 0 0 ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 26559 650000 SH SOLE 650000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 10978 1577296 SH SOLE 1577296 0 0 AERPIO PHARMACEUTICALS INC COM 00810B105 225 133375 SH SOLE 133375 0 0 AGILON HEALTH INC COM 00857U107 283950 6999023 SH SOLE 6999023 0 0 AGIOS PHARMACEUTICALS INC COM 00847X104 141870 2574308 SH SOLE 2574308 0 0 AKERO THERAPEUTICS INC COM 00973Y108 13115 528601 SH SOLE 528601 0 0 ALIGN TECHNOLOGY INC COM 016255101 114715 187750 SH SOLE 187750 0 0 ALLAKOS INC COM 01671P100 26098 305706 SH SOLE 305706 0 0 ALNYLAM PHARMACEUTICALS INC COM 02043Q107 50856 300000 SH SOLE 300000 0 0 AMARIN CORP PLC SPONS ADR NEW 023111206 18922 4320000 SH SOLE 4320000 0 0 AMICUS THERAPEUTICS INC COM 03152W109 9761 1012506 SH SOLE 1012506 0 0 ANAPTYSBIO INC COM 032724106 13879 535232 SH SOLE 535232 0 0 APELLIS PHARMACEUTICALS INC COM 03753U106 9979 157900 SH Call SOLE 157900 0 0 APPLIED THERAPEUTICS INC COM 03828A101 14581 701680 SH SOLE 701680 0 0 ARDELYX INC COM 039697107 39786 5248829 SH SOLE 5248829 0 0 ARGENX SE SPONSORED ADR 04016X101 94837 315000 SH SOLE 315000 0 0 ARVINAS INC COM 04335A105 48210 626100 SH SOLE 626100 0 0 ASCENDIS PHARMA A/S SPONSORED ADR 04351P101 30717 233500 SH SOLE 233500 0 0 ATAI LIFE SCIENCES NV SHS N0731H103 5828 315028 SH SOLE 315028 0 0 ATEA PHARMACEUTICALS INC COM 04683R106 16994 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319085 SH SOLE 319085 0 0 MIRUM PHARMACEUTICALS INC COM 604749101 26345 1523723 SH SOLE 1523723 0 0 NEUROCRINE BIOSCIENCES INC COM 64125C109 98780 1015000 SH SOLE 1015000 0 0 NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1347 1000000 PRN SOLE 1000000 0 0 NEVRO CORP COM 64157F103 88034 531000 SH SOLE 531000 0 0 NEVRO CORP NOTE 2.750% 4/0 64157FAC7 866 500000 PRN SOLE 500000 0 0 NKARTA INC COM 65487U108 15780 497948 SH SOLE 497948 0 0 NOVAVAX INC COM NEW 670002401 96601 455000 SH SOLE 455000 0 0 NOVOCURE LTD ORD SHS G6674U108 38819 175000 SH SOLE 175000 0 0 NURIX THERAPEUTICS INC COM 67080M103 8366 315350 SH SOLE 315350 0 0 NUVATION BIO INC *W EXP 07/07/202 67080N119 348 134028 SH SOLE 134028 0 0 NUVATION BIO INC COM CL A 67080N101 2248 241485 SH SOLE 241485 0 0 OAK STR HEALTH INC COM 67181A107 21964 375000 SH SOLE 375000 0 0 OLINK HLDG AB SPONSORED ADS 680710100 14629 425000 SH SOLE 425000 0 0 ORION ACQUISITION CORP UNIT 02/19/2026 68626A207 9920 1000000 SH SOLE 1000000 0 0 PACIRA BIOSCIENCES INC COM 695127100 62197 1025000 SH SOLE 1025000 0 0 PACIRA BIOSCIENCES INC NOTE 2.375% 4/0 695127AD2 1094 1000000 PRN SOLE 1000000 0 0 PARATEK PHARMACEUTICALS INC COM 699374302 11285 1654714 SH SOLE 1654714 0 0 PENUMBRA INC COM 70975L107 40424 147500 SH SOLE 147500 0 0 PHASEBIO PHARMACEUTICALS INC COM 717224109 6859 1843764 SH SOLE 1843764 0 0 PHREESIA INC COM 71944F106 58848 960000 SH SOLE 960000 0 0 POPULATION HEALTH INVS CO IN UNIT 99/99/9999 G71716123 2041 201044 SH SOLE 201044 0 0 POSEIDA THERAPEUTICS INC COM 73730P108 2903 289754 SH SOLE 289754 0 0 PPD INC COM 69355F102 31111 675000 SH SOLE 675000 0 0 PRELUDE THERAPEUTICS INC COM 74065P101 10947 382359 SH SOLE 382359 0 0 PROMETHEUS BIOSCIENCES INC COM 74349U108 14640 596096 SH SOLE 596096 0 0 PROTARA THERAPEUTICS INC COM STK 74365U107 6755 693542 SH SOLE 693542 0 0 PROTHENA CORP PLC SHS G72800108 48844 950091 SH SOLE 950091 0 0 PULMONX CORP COM 745848101 26141 592500 SH SOLE 592500 0 0 RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1393 1500000 PRN SOLE 1500000 0 0 RELAY THERAPEUTICS INC COM 75943R102 16475 450258 SH SOLE 450258 0 0 RENEO PHARMACEUTICALS INC COM 75974E103 10534 1129024 SH SOLE 1129024 0 0 RETROPHIN INC NOTE 2.500% 9/1 761299AB2 2765 3250000 PRN SOLE 3250000 0 0 RHYTHM PHARMACEUTICALS INC COM 76243J105 11871 606280 SH SOLE 606280 0 0 RIGEL PHARMACEUTICALS INC COM NEW 766559603 20636 4754900 SH SOLE 4754900 0 0 ROCKET PHARMACEUTICALS INC COM 77313F106 17861 403270 SH SOLE 403270 0 0 SAREPTA THERAPEUTICS INC COM 803607100 25557 328750 SH SOLE 328750 0 0 SEAGEN INC COM 81181C104 39470 250000 SH SOLE 250000 0 0 SHATTUCK LABS INC COM 82024L103 9088 313499 SH SOLE 313499 0 0 SHOCKWAVE MED INC COM 82489T104 41741 220000 SH SOLE 220000 0 0 SIERRA ONCOLOGY INC COM NEW 82640U404 19833 1018658 SH SOLE 1018658 0 0 SPERO THERAPEUTICS INC COM 84833T103 13484 965928 SH SOLE 965928 0 0 SPRUCE BIOSCIENCES INC COM 85209E109 17992 1605001 SH SOLE 1605001 0 0 TELEFLEX INCORPORATED COM 879369106 52233 130000 SH SOLE 130000 0 0 TEMPEST THERAPEUTICS INC COM 87978U108 3468 310161 SH SOLE 310161 0 0 THERAVANCE BIOPHARMA INC COM G8807B106 9983 687500 SH SOLE 687500 0 0 THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1429 1500000 PRN SOLE 1500000 0 0 TRANSLATE BIO INC COM 89374L104 19093 693266 SH SOLE 693266 0 0 TRAVERE THERAPEUTICS INC COM 89422G107 21800 1494164 SH SOLE 1494164 0 0 TRILLIUM THERAPEUTICS INC COM NEW 89620X506 6096 628500 SH SOLE 628500 0 0 TURMERIC ACQUISITION CORP UNIT 10/08/2025 G9127T116 2072 206000 SH SOLE 206000 0 0 ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 44338 465000 SH SOLE 465000 0 0 UNITEDHEALTH GROUP INC COM 91324P102 96106 240000 SH SOLE 240000 0 0 VERVE THERAPEUTICS INC COM 92539P101 58011 962826 SH SOLE 962826 0 0 WEST PHARMACEUTICAL SVSC INC COM 955306105 10234 28500 SH SOLE 28500 0 0 XENON PHARMACEUTICALS INC COM 98420N105 10660 572500 SH SOLE 572500 0 0 ZAI LAB LTD ADR 98887Q104 179468 1014000 SH SOLE 1014000 0 0