0001172661-15-002063.txt : 20151116 0001172661-15-002063.hdr.sgml : 20151116 20151116134108 ACCESSION NUMBER: 0001172661-15-002063 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20150930 FILED AS OF DATE: 20151116 DATE AS OF CHANGE: 20151116 EFFECTIVENESS DATE: 20151116 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: 151233257 BUSINESS ADDRESS: STREET 1: 650 SOUTH EXETER STREET CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 4102200129 MAIL ADDRESS: STREET 1: 650 SOUTH EXETER STREET CITY: BALTIMORE STATE: MD ZIP: 21202 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001595725 XXXXXXXX 09-30-2015 09-30-2015 false Rock Springs Capital Management LP

650 South Exeter Street Baltimore MD 21202

13F HOLDINGS REPORT 028-16048 N Evans Apeadu 410-220-0129 /s/ Evans Apeadu Baltimore MD 11-16-2015 0 121 1231971 INFORMATION TABLE 2 infotable.xml ABBVIE INC COM 00287Y109 40613 746423 SH SOLE 746423 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 53811 812000 SH SOLE 812000 0 0 ACHILLION PHARMACEUTICALS IN COM 00448Q201 7774 1125000 SH SOLE 1125000 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 9051 756100 SH SOLE 756100 0 0 ADEPTUS HEALTH INC CL A 006855100 14375 178000 SH SOLE 178000 0 0 ADURO BIOTECH INC COM 00739L101 8039 415000 SH SOLE 415000 0 0 ADVAXIS INC COM NEW 007624208 3448 337000 SH SOLE 337000 0 0 AETNA INC NEW COM 00817Y108 42232 386000 SH SOLE 386000 0 0 AIMMUNE THERAPEUTICS INC COM 00900T107 5064 200000 SH SOLE 200000 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 26899 172000 SH SOLE 172000 0 0 ALLERGAN PLC SHS G0177J108 34248 126000 SH SOLE 126000 0 0 ALLERGAN PLC PFD CONV SER A G0177J116 4728 5000 SH SOLE 5000 0 0 AMGEN INC COM 031162100 11515 83250 SH SOLE 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