0001172661-20-000511.txt : 20200214 0001172661-20-000511.hdr.sgml : 20200214 20200214091843 ACCESSION NUMBER: 0001172661-20-000511 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20191231 FILED AS OF DATE: 20200214 DATE AS OF CHANGE: 20200214 EFFECTIVENESS DATE: 20200214 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: 20614506 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 12-31-2019 12-31-2019 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 02-14-2020 0 130 3164999 INFORMATION TABLE 2 infotable.xml 10X GENOMICS INC CL A COM 88025U109 5528 72500 SH SOLE 72500 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 32390 975000 SH SOLE 975000 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 28663 670000 SH SOLE 670000 0 0 ACHILLION PHARMACEUTICALS IN COM 00448Q201 22221 3685000 SH SOLE 3685000 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 3024 1600000 SH SOLE 1600000 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 960 800000 SH SOLE 800000 0 0 ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 16306 545000 SH SOLE 545000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6112 800000 SH SOLE 800000 0 0 AGIOS PHARMACEUTICALS INC COM 00847X104 30632 641500 SH SOLE 641500 0 0 AKERO THERAPEUTICS INC COM 00973Y108 4994 225000 SH SOLE 225000 0 0 ALIGN TECHNOLOGY INC COM 016255101 30946 110900 SH SOLE 110900 0 0 ALLAKOS INC COM 01671P100 22410 235000 SH SOLE 235000 0 0 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