0001172661-19-001776.txt : 20190814 0001172661-19-001776.hdr.sgml : 20190814 20190814093501 ACCESSION NUMBER: 0001172661-19-001776 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20190630 FILED AS OF DATE: 20190814 DATE AS OF CHANGE: 20190814 EFFECTIVENESS DATE: 20190814 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: 191023322 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 06-30-2019 06-30-2019 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 08-14-2019 0 135 2764118 INFORMATION TABLE 2 infotable.xml ABBVIE INC COM 00287Y109 10908 150000 SH SOLE 150000 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 36872 1055000 SH SOLE 1055000 0 0 ACHILLION PHARMACEUTICALS IN COM 00448Q201 7906 2950000 SH SOLE 2950000 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 4441 2028000 SH SOLE 2028000 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 3518 875000 SH SOLE 875000 0 0 ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 28980 600000 SH SOLE 600000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 5480 800000 SH SOLE 800000 0 0 AGILENT TECHNOLOGIES INC COM 00846U101 13650 182800 SH SOLE 182800 0 0 AGIOS PHARMACEUTICALS INC COM 00847X104 8505 170500 SH SOLE 170500 0 0 AKERO THERAPEUTICS INC COM 00973Y108 4309 225000 SH SOLE 225000 0 0 ALDER BIOPHARMACEUTICALS INC COM 014339105 18388 1562300 SH SOLE 1562300 0 0 ALDER BIOPHARMACEUTICALS INC NOTE 2.500% 2/0 014339AA3 4672 5000000 PRN SOLE 5000000 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 31763 242500 SH SOLE 242500 0 0 ALIGN TECHNOLOGY INC COM 016255101 28739 105000 SH SOLE 105000 0 0 ALLAKOS INC COM 01671P100 17505 404000 SH SOLE 404000 0 0 ALNYLAM PHARMACEUTICALS INC COM 02043Q107 23778 327700 SH SOLE 327700 0 0 AMARIN CORP PLC SPONS ADR NEW 023111206 87740 4525000 SH SOLE 4525000 0 0 AMICUS THERAPEUTICS INC COM 03152W109 12480 1000000 SH SOLE 1000000 0 0 ANAPTYSBIO INC COM 032724106 12328 218500 SH SOLE 218500 0 0 ANTHEM INC COM 036752103 5644 20000 SH SOLE 20000 0 0 ARDELYX INC COM 039697107 5380 2000000 SH SOLE 2000000 0 0 ARGENX SE SPONSORED ADR 04016X101 25725 181700 SH SOLE 181700 0 0 ARVINAS INC COM 04335A105 3299 150000 SH SOLE 150000 0 0 ASCENDIS PHARMA A S SPONSORED ADR 04351P101 24585 213500 SH SOLE 213500 0 0 ASSEMBLY BIOSCIENCES INC COM 045396108 7554 560000 SH SOLE 560000 0 0 AUDENTES THERAPEUTICS INC COM 05070R104 15523 410000 SH SOLE 410000 0 0 AXOGEN INC COM 05463X106 11959 603970 SH SOLE 603970 0 0 AXONICS MODULATION TECH INC COM 05465P101 16388 400000 SH SOLE 400000 0 0 BAXTER INTL INC COM 071813109 24627 300700 SH SOLE 300700 0 0 BEIGENE LTD SPONSORED ADR 07725L102 26624 214800 SH SOLE 214800 0 0 BIOGEN INC COM 09062X103 22802 97500 SH Call SOLE 97500 0 0 BIOHAVEN PHARMACTL HLDG CO L COM G11196105 15042 343500 SH SOLE 343500 0 0 BIOMARIN PHARMACEUTICAL INC COM 09061G101 12205 142500 SH SOLE 142500 0 0 BLUEBIRD BIO INC COM 09609G100 5978 47000 SH SOLE 47000 0 0 BLUEPRINT MEDICINES CORP COM 09627Y109 29006 307500 SH SOLE 307500 0 0 BOSTON SCIENTIFIC CORP COM 101137107 41691 970000 SH SOLE 970000 0 0 BRISTOL MYERS SQUIBB CO COM 110122108 47618 1050000 SH SOLE 1050000 0 0 CELGENE CORP COM 151020104 17115 185150 SH SOLE 185150 0 0 CHIASMA INC COM 16706W102 4856 650000 SH SOLE 650000 0 0 CIGNA CORP NEW COM 125523100 28721 182300 SH SOLE 182300 0 0 CLOVIS ONCOLOGY INC COM 189464100 3807 256000 SH SOLE 256000 0 0 COHERUS BIOSCIENCES INC COM 19249H103 41548 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3172 526100 SH SOLE 526100 0 0 FRESHPET INC COM 358039105 10695 235000 SH SOLE 235000 0 0 GALAPAGOS NV SPON ADR 36315X101 21273 165000 SH SOLE 165000 0 0 GAMIDA CELL LTD SHS M47364100 5080 1000000 SH SOLE 1000000 0 0 GLOBAL BLOOD THERAPEUTICS IN COM 37890U108 13939 265000 SH SOLE 265000 0 0 GLOBAL CORD BLOOD CORPORATIO SHS G39342103 5347 925000 SH SOLE 925000 0 0 GUARDANT HEALTH INC COM 40131M109 16403 190000 SH SOLE 190000 0 0 GW PHARMACEUTICALS PLC ADS 36197T103 104296 605000 SH SOLE 605000 0 0 HCA HEALTHCARE INC COM 40412C101 61502 455000 SH SOLE 455000 0 0 HERON THERAPEUTICS INC COM 427746102 558 30000 SH SOLE 30000 0 0 HOMOLOGY MEDICINES INC COM 438083107 8317 425000 SH SOLE 425000 0 0 IDEXX LABS INC COM 45168D104 33095 120200 SH SOLE 120200 0 0 IMMUNOMEDICS INC COM 452907108 12414 895000 SH SOLE 895000 0 0 INCYTE CORP COM 45337C102 26533 312300 SH SOLE 312300 0 0 INSMED INC COM PAR $.01 457669307 22784 890000 SH SOLE 890000 0 0 INSMED INC NOTE 1.750% 1/1 457669AA7 5849 6000000 PRN SOLE 6000000 0 0 INSULET CORP COM 45784P101 29188 244500 SH SOLE 244500 0 0 INTERCEPT PHARMACEUTICALS IN COM 45845P108 3979 50000 SH SOLE 50000 0 0 INTERSECT ENT INC COM 46071F103 17980 790000 SH SOLE 790000 0 0 INTUITIVE SURGICAL INC COM NEW 46120E602 79994 152500 SH SOLE 152500 0 0 INVITAE CORP COM 46185L103 26438 1125000 SH SOLE 1125000 0 0 IRHYTHM TECHNOLOGIES INC COM 450056106 39510 499615 SH SOLE 499615 0 0 KALEIDO BIOSCIENCES INC COM 483347100 1161 100050 SH SOLE 100050 0 0 KARUNA THERAPEUTICS INC COM 48576A100 8278 413500 SH SOLE 413500 0 0 LA JOLLA PHARMACEUTICAL CO COM PAR $.0001 2 503459604 3931 425000 SH SOLE 425000 0 0 MACROGENICS INC COM 556099109 5091 300000 SH SOLE 300000 0 0 MADRIGAL PHARMACEUTICALS INC COM 558868105 26926 256900 SH SOLE 256900 0 0 MEDICINES CO COM 584688105 29176 800000 SH SOLE 800000 0 0 MEDICINES CO NOTE 2.500% 1/1 584688AE5 3618 3000000 PRN SOLE 3000000 0 0 MEDICINES CO NOTE 2.750% 7/1 584688AG0 5026 5000000 PRN SOLE 5000000 0 0 MERSANA 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1250000 SH SOLE 1250000 0 0 PACIRA BIOSCIENCES NOTE 2.375% 4/0 695127AD2 1026 1000000 PRN SOLE 1000000 0 0 PARATEK PHARMACEUTICALS INC COM 699374302 1796 450000 SH SOLE 450000 0 0 PENUMBRA INC COM 70975L107 38240 239000 SH SOLE 239000 0 0 PHASEBIO PHARMACEUTICALS INC COM 717224109 18673 1423256 SH SOLE 1423256 0 0 PORTOLA PHARMACEUTICALS INC COM 737010108 27347 1008000 SH SOLE 1008000 0 0 PRA HEALTH SCIENCES INC COM 69354M108 23796 240000 SH SOLE 240000 0 0 PROTEOSTASIS THERAPEUTICS IN COM 74373B109 390 400000 SH SOLE 400000 0 0 PUMA BIOTECHNOLOGY INC COM 74587V107 6792 534400 SH SOLE 534400 0 0 RA PHARMACEUTICALS INC COM 74933V108 24176 804000 SH SOLE 804000 0 0 RADIUS HEALTH INC COM NEW 750469207 30450 1250000 SH SOLE 1250000 0 0 RADIUS HEALTH INC NOTE 3.000% 9/0 750469AA6 1361 1500000 PRN SOLE 1500000 0 0 RESTORBIO INC COM 76133L103 4080 400000 SH SOLE 400000 0 0 RETROPHIN INC COM 761299106 19086 950000 SH SOLE 950000 0 0 RHYTHM PHARMACEUTICALS INC COM 76243J105 5170 235000 SH SOLE 235000 0 0 RIGEL PHARMACEUTICALS INC COM NEW 766559603 10962 4200000 SH SOLE 4200000 0 0 RTI SURGICAL HOLDINGS INC COM 74975N105 8288 1950000 SH SOLE 1950000 0 0 SAGE THERAPEUTICS INC COM 78667J108 16936 92500 SH SOLE 92500 0 0 SAREPTA THERAPEUTICS INC COM 803607100 49384 325000 SH SOLE 325000 0 0 SEATTLE GENETICS INC COM 812578102 16749 242000 SH SOLE 242000 0 0 SPARK THERAPEUTICS INC COM 84652J103 51740 505371 SH SOLE 505371 0 0 SPERO THERAPEUTICS INC COM 84833T103 6043 525000 SH SOLE 525000 0 0 STRYKER CORP COM 863667101 36799 179000 SH SOLE 179000 0 0 TELEFLEX INC COM 879369106 43050 130000 SH SOLE 130000 0 0 THERAVANCE BIOPHARMA INC COM G8807B106 8982 550000 SH SOLE 550000 0 0 THERAVANCE BIOPHARMA INC NOTE 3.250%11/0 88339KAA0 1290 1500000 PRN SOLE 1500000 0 0 THERMO FISHER SCIENTIFIC INC COM 883556102 23788 81000 SH SOLE 81000 0 0 TRANSLATE BIO INC COM 89374L104 12746 1009179 SH SOLE 1009179 0 0 ULTRAGENYX PHARMACEUTICAL IN COM 90400D108 36830 580000 SH SOLE 580000 0 0 UNITEDHEALTH GROUP INC COM 91324P102 144210 591000 SH SOLE 591000 0 0 VERTEX PHARMACEUTICALS INC COM 92532F100 37226 203000 SH SOLE 203000 0 0 WELLCARE HEALTH PLANS INC COM 94946T106 91365 320500 SH SOLE 320500 0 0 WEST PHARMACEUTICAL SVSC INC COM 955306105 17208 137500 SH SOLE 137500 0 0 ZAI LAB LTD ADR 98887Q104 19179 550000 SH SOLE 550000 0 0 ZOGENIX INC COM NEW 98978L204 11228 235000 SH SOLE 235000 0 0