0001172661-20-001805.txt : 20200814 0001172661-20-001805.hdr.sgml : 20200814 20200814133555 ACCESSION NUMBER: 0001172661-20-001805 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20200630 FILED AS OF DATE: 20200814 DATE AS OF CHANGE: 20200814 EFFECTIVENESS DATE: 20200814 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: 201103736 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 06-30-2020 06-30-2020 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 08-14-2020 0 143 3645815 INFORMATION TABLE 2 infotable.xml 10X GENOMICS INC CL A COM 88025U109 6788 76000 SH SOLE 76000 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 22608 900000 SH SOLE 900000 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 51136 1055000 SH SOLE 1055000 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 2663 1644015 SH SOLE 1644015 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 19889 1986910 SH SOLE 1986910 0 0 ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 27819 575000 SH SOLE 575000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 14712 1590528 SH SOLE 1590528 0 0 AGIOS PHARMACEUTICALS INC COM 00847X104 63091 1179720 SH SOLE 1179720 0 0 AKERO THERAPEUTICS INC COM 00973Y108 6055 242985 SH SOLE 242985 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 20596 183500 SH SOLE 183500 0 0 ALIGN TECHNOLOGY INC COM 016255101 39245 143000 SH SOLE 143000 0 0 ALLAKOS INC COM 01671P100 17177 239032 SH SOLE 239032 0 0 ALLOGENE THERAPEUTICS INC COM 019770106 18861 440468 SH SOLE 440468 0 0 ALNYLAM PHARMACEUTICALS INC COM 02043Q107 51098 345000 SH SOLE 345000 0 0 AMARIN CORP PLC SPONS ADR NEW 023111206 32178 4650000 SH SOLE 4650000 0 0 AMGEN INC COM 031162100 29718 126000 SH SOLE 126000 0 0 AMICUS THERAPEUTICS INC COM 03152W109 15334 1016821 SH SOLE 1016821 0 0 ANAPTYSBIO INC COM 032724106 6852 306713 SH SOLE 306713 0 0 APPLIED THERAPEUTICS INC COM 03828A101 35845 991573 SH SOLE 991573 0 0 APREA THERAPEUTICS INC COM 03836J102 20099 518290 SH SOLE 518290 0 0 ARDELYX INC COM 039697107 34705 5015109 SH SOLE 5015109 0 0 ARGENX SE SPONSORED ADR 04016X101 64754 287500 SH SOLE 287500 0 0 ARVINAS INC COM 04335A105 16148 481468 SH SOLE 481468 0 0 ASCENDIS PHARMA A S SPONSORED ADR 04351P101 31577 213500 SH SOLE 213500 0 0 ASSEMBLY BIOSCIENCES INC COM 045396108 34955 1498915 SH SOLE 1498915 0 0 BAXTER INTL INC COM 071813109 55535 645000 SH SOLE 645000 0 0 BEIGENE LTD SPONSORED ADR 07725L102 40506 215000 SH SOLE 215000 0 0 BELLUS HEALTH INC NEW COM NEW 07987C204 7163 696115 SH SOLE 696115 0 0 BIOGEN INC COM 09062X103 48159 180000 SH SOLE 180000 0 0 BIOHAVEN PHARMACTL HLDG CO L COM G11196105 14901 203817 SH SOLE 203817 0 0 BIOMARIN PHARMACEUTICAL INC COM 09061G101 47794 387500 SH SOLE 387500 0 0 BLUEPRINT MEDICINES CORP COM 09627Y109 74882 960029 SH SOLE 960029 0 0 BOSTON SCIENTIFIC CORP COM 101137107 38621 1100000 SH SOLE 1100000 0 0 BRIGHT HORIZONS FAM SOL IN D COM 109194100 11544 98500 SH SOLE 98500 0 0 BRISTOL-MYERS SQUIBB CO RIGHT 99/99/9999 110122157 663 185150 SH SOLE 185150 0 0 BURNING ROCK BIOTECH LTD SPONSORED ADS 12233L107 5402 200000 SH SOLE 200000 0 0 CENTENE CORP DEL COM 15135B101 83568 1315000 SH SOLE 1315000 0 0 CHIASMA INC COM 16706W102 7491 1392312 SH SOLE 1392312 0 0 CIGNA CORP NEW COM 125523100 30212 161000 SH SOLE 161000 0 0 COHERUS BIOSCIENCES INC COM 19249H103 36171 2025275 SH SOLE 2025275 0 0 COLLEGIUM PHARMACEUTICAL INC COM 19459J104 20563 1175000 SH SOLE 1175000 0 0 COMPUGEN LTD ORD M25722105 16978 1130375 SH SOLE 1130375 0 0 CONMED CORP COM 207410101 12958 180000 SH SOLE 180000 0 0 CONSTELLATION PHARMCETICLS I COM 210373106 15496 515680 SH SOLE 515680 0 0 COVETRUS INC COM 22304C100 14983 837500 SH SOLE 837500 0 0 CYTOKINETICS INC COM NEW 23282W605 1825 77417 SH SOLE 77417 0 0 CYTOKINETICS INC NOTE 4.000%11/1 23282WAA8 19082 8000000 PRN SOLE 8000000 0 0 DECIPHERA PHARMACEUTICALS IN COM 24344T101 12531 209829 SH SOLE 209829 0 0 DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 14725 1660120 SH SOLE 1660120 0 0 EDWARDS LIFESCIENCES CORP COM 28176E108 40222 582000 SH SOLE 582000 0 0 ENCOMPASS HEALTH CORP COM 29261A100 51557 832500 SH SOLE 832500 0 0 EPIZYME INC COM 29428V104 33792 2104084 SH SOLE 2104084 0 0 EXACT SCIENCES CORP COM 30063P105 36863 424000 SH SOLE 424000 0 0 FIBROGEN INC COM 31572Q808 12785 315449 SH SOLE 315449 0 0 FIVE PRIME THERAPEUTICS INC COM 33830X104 2481 406729 SH SOLE 406729 0 0 FRESHPET INC COM 358039105 39822 476000 SH SOLE 476000 0 0 FUSION PHARMACEUTICALS INC COM 36118A100 16370 937041 SH SOLE 937041 0 0 GALAPAGOS NV SPON ADR 36315X101 34526 175000 SH SOLE 175000 0 0 GALERA THERAPEUTICS INC COM 36338D108 4052 567552 SH SOLE 567552 0 0 GAMIDA CELL LTD SHS M47364100 9216 2016656 SH SOLE 2016656 0 0 GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 18199 288279 SH SOLE 288279 0 0 GLOBAL CORD BLOOD CORPORATIO SHS G39342103 2868 925000 SH SOLE 925000 0 0 GOSSAMER BIO INC NOTE 5.000% 6/0 38341PAA0 15746 15573000 PRN SOLE 15573000 0 0 GUARDANT HEALTH INC COM 40131M109 15415 190000 SH SOLE 190000 0 0 GW PHARMACEUTICALS PLC ADS 36197T103 14732 120043 SH SOLE 120043 0 0 HCA HEALTHCARE INC COM 40412C101 53334 549500 SH SOLE 549500 0 0 HEALTH CATALYST INC COM 42225T107 12397 425000 SH SOLE 425000 0 0 HEALTHEQUITY INC COM 42226A107 18780 320100 SH SOLE 320100 0 0 HOMOLOGY MEDICINES INC COM 438083107 5341 351638 SH SOLE 351638 0 0 HUMANA INC COM 444859102 74060 191000 SH SOLE 191000 0 0 IDEXX LABS INC COM 45168D104 41270 125000 SH SOLE 125000 0 0 IGM BIOSCIENCES INC COM 449585108 6955 95278 SH SOLE 95278 0 0 IMARA INC COM 45249V107 10078 364733 SH SOLE 364733 0 0 IMMUNOMEDICS INC COM 452907108 59457 1677679 SH SOLE 1677679 0 0 IMMUNOVANT INC COM 45258J102 11014 452319 SH SOLE 452319 0 0 INARI MED INC COM 45332Y109 3875 80000 SH SOLE 80000 0 0 INCYTE CORP COM 45337C102 25993 250000 SH SOLE 250000 0 0 INSMED INC NOTE 1.750% 1/1 457669AA7 5861 6000000 PRN SOLE 6000000 0 0 INSPIRE MED SYS INC COM 457730109 23060 265000 SH SOLE 265000 0 0 INSULET CORP COM 45784P101 56918 293000 SH SOLE 293000 0 0 INTERSECT ENT INC COM 46071F103 6770 500000 SH SOLE 500000 0 0 INTUITIVE SURGICAL INC COM NEW 46120E602 68380 120000 SH SOLE 120000 0 0 INVITAE CORP COM 46185L103 45772 1511127 SH SOLE 1511127 0 0 IRHYTHM TECHNOLOGIES INC COM 450056106 75444 651000 SH SOLE 651000 0 0 JOHNSON & JOHNSON COM 478160104 14766 105000 SH SOLE 105000 0 0 KARUNA THERAPEUTICS INC COM 48576A100 22661 203312 SH SOLE 203312 0 0 LEGEND BIOTECH CORP SPONSORED ADS 52490G102 8763 205896 SH SOLE 205896 0 0 MACROGENICS INC COM 556099109 6548 234516 SH SOLE 234516 0 0 MADRIGAL PHARMACEUTICALS INC COM 558868105 28796 254268 SH SOLE 254268 0 0 MERSANA THERAPEUTICS INC COM 59045L106 43955 1878428 SH SOLE 1878428 0 0 MIRATI THERAPEUTICS INC COM 60468T105 39818 348761 SH SOLE 348761 0 0 MIRUM PHARMACEUTICALS INC COM 604749101 25685 1319910 SH SOLE 1319910 0 0 MOMENTA PHARMACEUTICALS INC COM 60877T100 13308 400000 SH SOLE 400000 0 0 MYOKARDIA INC COM 62857M105 16688 172716 SH SOLE 172716 0 0 MYOVANT SCIENCES LTD COM G637AM102 10483 508411 SH SOLE 508411 0 0 NABRIVA THERAPEUTICS PLC SHS G63637105 720 1067664 SH SOLE 1067664 0 0 NEUROCRINE BIOSCIENCES INC COM 64125C109 166713 1366500 SH SOLE 1366500 0 0 NEUROCRINE BIOSCIENCES INC NOTE 2.250% 5/1 64125CAD1 1673 1000000 PRN SOLE 1000000 0 0 NEVRO CORP COM 64157F103 46115 386000 SH SOLE 386000 0 0 NEVRO CORP NOTE 2.750% 4/0 64157FAC7 683 500000 PRN SOLE 500000 0 0 NGM BIOPHARMACEUTICALS INC COM 62921N105 7055 357409 SH SOLE 357409 0 0 NOVAVAX INC COM NEW 670002401 47559 570598 SH SOLE 570598 0 0 NOVOCURE LTD ORD SHS G6674U108 10378 175000 SH SOLE 175000 0 0 OBSEVA SA COM H5861P103 8385 1423552 SH SOLE 1423552 0 0 ODONATE THERAPEUTICS INC COM 676079106 18512 437231 SH SOLE 437231 0 0 ONESPAWORLD HOLDINGS LIMITED COM P73684113 8300 1740000 SH SOLE 1740000 0 0 PACIRA BIOSCIENCES COM 695127100 48535 925000 SH SOLE 925000 0 0 PACIRA BIOSCIENCES NOTE 2.375% 4/0 695127AD2 1094 1000000 PRN SOLE 1000000 0 0 PARATEK PHARMACEUTICALS INC COM 699374302 8640 1655164 SH SOLE 1655164 0 0 PASSAGE BIO INC COM 702712100 5560 203436 SH SOLE 203436 0 0 PENUMBRA INC COM 70975L107 37016 207000 SH SOLE 207000 0 0 PHASEBIO PHARMACEUTICALS INC COM 717224109 5262 1143925 SH SOLE 1143925 0 0 PHREESIA INC COM 71944F106 18424 651500 SH SOLE 651500 0 0 PORTOLA PHARMACEUTICALS INC COM 737010108 41488 2306196 SH SOLE 2306196 0 0 PPD INC COM 69355F102 13065 487500 SH SOLE 487500 0 0 PROTHENA CORP PLC SHS G72800108 10347 989218 SH SOLE 989218 0 0 RADIUS HEALTH INC COM NEW 750469207 13674 1003259 SH SOLE 1003259 0 0 RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1105 1500000 PRN SOLE 1500000 0 0 REPARE THERAPEUTICS INC COM 760273102 8525 274815 SH SOLE 274815 0 0 RETROPHIN INC COM 761299106 20905 1024261 SH SOLE 1024261 0 0 RETROPHIN INC NOTE 2.500% 9/1 761299AB2 2713 3250000 PRN SOLE 3250000 0 0 RHYTHM PHARMACEUTICALS INC COM 76243J105 11420 512111 SH SOLE 512111 0 0 RIGEL PHARMACEUTICALS INC COM NEW 766559603 10793 5897642 SH SOLE 5897642 0 0 ROYALTY PHARMA PLC SHS CL A G7709Q104 24275 500000 SH SOLE 500000 0 0 SAREPTA THERAPEUTICS INC COM 803607100 55397 345500 SH SOLE 345500 0 0 SEATTLE GENETICS INC COM 812578102 42480 250000 SH SOLE 250000 0 0 SHOCKWAVE MED INC COM 82489T104 9356 197500 SH SOLE 197500 0 0 SPERO THERAPEUTICS INC COM 84833T103 8323 615177 SH SOLE 615177 0 0 STAAR SURGICAL CO COM PAR $0.01 852312305 8000 130000 SH SOLE 130000 0 0 TELEFLEX INCORPORATED COM 879369106 47317 130000 SH SOLE 130000 0 0 TG THERAPEUTICS INC COM 88322Q108 13303 682926 SH SOLE 682926 0 0 THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1460 1500000 PRN SOLE 1500000 0 0 THERAVANCE BIOPHARMA INC COM G8807B106 17384 828218 SH SOLE 828218 0 0 TRANSLATE BIO INC COM 89374L104 11850 661268 SH SOLE 661268 0 0 TRILLIUM THERAPEUTICS INC COM NEW 89620X506 6170 762618 SH SOLE 762618 0 0 ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 50596 646841 SH SOLE 646841 0 0 UNIQURE NV SHS N90064101 18345 407133 SH SOLE 407133 0 0 UNITEDHEALTH GROUP INC COM 91324P102 119455 405000 SH SOLE 405000 0 0 VERTEX PHARMACEUTICALS INC COM 92532F100 36289 125000 SH SOLE 125000 0 0 WEST PHARMACEUTICAL SVSC INC COM 955306105 16129 71000 SH SOLE 71000 0 0 XENON PHARMACEUTICALS INC COM 98420N105 6467 515711 SH SOLE 515711 0 0 ZAI LAB LTD ADR 98887Q104 66792 813246 SH SOLE 813246 0 0 ZOGENIX INC COM NEW 98978L204 11236 415982 SH SOLE 415982 0 0