0001172661-15-001627.txt : 20150814 0001172661-15-001627.hdr.sgml : 20150814 20150814134019 ACCESSION NUMBER: 0001172661-15-001627 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20150630 FILED AS OF DATE: 20150814 DATE AS OF CHANGE: 20150814 EFFECTIVENESS DATE: 20150814 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: 151054538 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 06-30-2015 06-30-2015 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 08-14-2015 0 117 1369933 INFORMATION TABLE 2 infotable.xml ABBVIE INC COM 00287Y109 50152 746423 SH SOLE 746423 0 0 ACADIA HEALTHCARE COMPANY IN COM 00404A109 40085 511750 SH SOLE 511750 0 0 ACHILLION PHARMACEUTICALS IN COM 00448Q201 9746 1100000 SH SOLE 1100000 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 16589 905000 SH SOLE 905000 0 0 ADEPTUS HEALTH INC CL A 006855100 14249 150000 SH SOLE 150000 0 0 ADURO BIOTECH INC COM 00739L101 10616 350000 SH SOLE 350000 0 0 ADVAXIS INC COM NEW 007624208 8488 417500 SH SOLE 417500 0 0 AETNA INC NEW COM 00817Y108 19947 156500 SH SOLE 156500 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 27929 154500 SH SOLE 154500 0 0 ALLERGAN PLC SHS G0177J108 36870 121500 SH SOLE 121500 0 0 ALLERGAN PLC PFD CONV SER A G0177J116 5228 5000 SH SOLE 5000 0 0 AMGEN INC COM 031162100 23949 156000 SH SOLE 156000 0 0 AMICUS THERAPEUTICS INC COM 03152W109 5342 377500 SH SOLE 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