Managing Member

0001172661-16-003859.txt : 20160815 0001172661-16-003859.hdr.sgml : 20160815 20160815120658 ACCESSION NUMBER: 0001172661-16-003859 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20160630 FILED AS OF DATE: 20160815 DATE AS OF CHANGE: 20160815 EFFECTIVENESS DATE: 20160815 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Atika Capital Management LLC CENTRAL INDEX KEY: 0001599731 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-15941 FILM NUMBER: 161831113 BUSINESS ADDRESS: STREET 1: 3 COLUMBUS CIRCLE, 25TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10019 BUSINESS PHONE: 212-408-2700 MAIL ADDRESS: STREET 1: 3 COLUMBUS CIRCLE, 25TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10019 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001599731 XXXXXXXX 06-30-2016 06-30-2016 false Atika Capital Management LLC

3 Columbus Circle, 25th Floor New York NY 10019

13F HOLDINGS REPORT 028-15941 N Brad Farber Managing Member 212-408-2772 /s/ Brad Farber New York NY 08-15-2016 1 120 233442 1 0001568986 028-16711 Atika Capital Partners LP INFORMATION TABLE 2 infotable.xml 2U INC COM 90214J101 662 22501 SH SOLE 22501 0 0 2U INC COM 90214J101 1103 37499 SH DFND 1 37499 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 224 6900 SH Call DFND 1 6900 0 0 ACADIA PHARMACEUTICALS INC COM 004225108 110 3400 SH Call SOLE 3400 0 0 ACCELERON PHARMA INC COM 00434H108 510 15001 SH DFND 1 15001 0 0 ACCELERON PHARMA INC COM 00434H108 306 8999 SH SOLE 8999 0 0 ADEPTUS HEALTH INC CL A 006855100 4036 78129 SH DFND 1 78129 0 0 ADEPTUS HEALTH INC CL A 006855100 2421 46871 SH SOLE 46871 0 0 ADVANCED DRAIN SYS INC DEL COM 00790R104 1625 59384 SH DFND 1 59384 0 0 ADVANCED DRAIN SYS INC DEL COM 00790R104 975 35616 SH SOLE 35616 0 0 AETNA INC NEW COM 00817Y108 2901 23751 SH DFND 1 23751 0 0 AETNA INC NEW COM 00817Y108 1740 14249 SH SOLE 14249 0 0 ALDER BIOPHARMACEUTICALS INC COM 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