0001172661-16-004294.txt : 20161114 0001172661-16-004294.hdr.sgml : 20161111 20161114135703 ACCESSION NUMBER: 0001172661-16-004294 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20160930 FILED AS OF DATE: 20161114 DATE AS OF CHANGE: 20161114 EFFECTIVENESS DATE: 20161114 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: 161993448 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 09-30-2016 09-30-2016 false Rock Springs Capital Management LP

650 South Exeter Street Suite 1070 Baltimore MD 21202

13F HOLDINGS REPORT 028-16048 N Eric Brody 410-220-0541 /s/ Eric Brody Baltimore MD 11-14-2016 0 137 1595270 INFORMATION TABLE 2 infotable.xml ACADIA HEALTHCARE COMPANY IN COM 00404A109 45818 924678 SH SOLE 924678 0 0 ACHILLION PHARMACEUTICALS IN COM 00448Q201 10660 1316000 SH SOLE 1316000 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 26020 1016000 SH SOLE 1016000 0 0 ADAPTIMMUNE THERAPEUTICS PLC SPONDS ADR 00653A107 4759 675000 SH SOLE 675000 0 0 ADURO BIOTECH INC COM 00739L101 5158 415000 SH SOLE 415000 0 0 ADVANCED ACCELERATOR APPLIC SPONSORED ADS 00790T100 35414 930000 SH SOLE 930000 0 0 AEGLEA BIOTHERAPEUTICS INC COM 00773J103 3359 524089 SH SOLE 524089 0 0 AETNA INC NEW COM 00817Y108 50810 440100 SH SOLE 440100 0 0 AIMMUNE THERAPEUTICS INC COM 00900T107 4395 293000 SH SOLE 293000 0 0 ALDER BIOPHARMACEUTICALS INC COM 014339105 5964 182000 SH SOLE 182000 0 0 ALEXION PHARMACEUTICALS INC COM 015351109 32749 267250 SH SOLE 267250 0 0 ALKERMES PLC SHS G01767105 8608 183027 SH SOLE 183027 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