0001172661-19-002223.txt : 20191114 0001172661-19-002223.hdr.sgml : 20191114 20191114094401 ACCESSION NUMBER: 0001172661-19-002223 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20190930 FILED AS OF DATE: 20191114 DATE AS OF CHANGE: 20191114 EFFECTIVENESS DATE: 20191114 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: 191217003 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 09-30-2019 09-30-2019 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 11-14-2019 0 138 2509651 INFORMATION TABLE 2 infotable.xml 10X GENOMICS INC CL A COM 88025U109 3200 63500 SH SOLE 63500 0 0 ABBOTT LABS COM 002824100 10250 122500 SH SOLE 122500 0 0 ABBVIE INC COM 00287Y109 39753 525000 SH SOLE 525000 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 40093 1290000 SH SOLE 1290000 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 6730 187000 SH SOLE 187000 0 0 ACHILLION PHARMACEUTICALS IN COM 00448Q201 13770 3825000 SH SOLE 3825000 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 3213 2974754 SH SOLE 2974754 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 1321 875000 SH SOLE 875000 0 0 ADAPTIVE BIOTECHNOLOGIES COR COM 00650F109 16841 545000 SH SOLE 545000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 6152 800000 SH SOLE 800000 0 0 AGIOS PHARMACEUTICALS INC COM 00847X104 11421 352500 SH SOLE 352500 0 0 AKERO THERAPEUTICS INC COM 00973Y108 5119 225000 SH SOLE 225000 0 0 ALDER 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