0001172661-20-002248.txt : 20201116 0001172661-20-002248.hdr.sgml : 20201116 20201116140948 ACCESSION NUMBER: 0001172661-20-002248 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20200930 FILED AS OF DATE: 20201116 DATE AS OF CHANGE: 20201116 EFFECTIVENESS DATE: 20201116 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: 201315512 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 09-30-2020 09-30-2020 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 11-16-2020 0 148 3941221 INFORMATION TABLE 2 infotable.xml 10X GENOMICS INC CL A COM 88025U109 9476 76000 SH SOLE 76000 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 22405 760000 SH SOLE 760000 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 64895 1573200 SH SOLE 1573200 0 0 ACCOLADE INC COM 00437E102 12633 325000 SH SOLE 325000 0 0 ACELRX PHARMACEUTICALS INC COM 00444T100 5358 3773585 SH SOLE 3773585 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 5336 2076307 SH SOLE 2076307 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 15856 1986910 SH SOLE 1986910 0 0 ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 30880 635000 SH SOLE 635000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 11277 1590528 SH SOLE 1590528 0 0 AGIOS PHARMACEUTICALS INC COM 00847X104 55353 1581509 SH SOLE 1581509 0 0 AKERO THERAPEUTICS INC COM 00973Y108 13025 423040 SH SOLE 423040 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 25747 225000 SH 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