0001172661-19-002327.txt : 20191114 0001172661-19-002327.hdr.sgml : 20191114 20191114160012 ACCESSION NUMBER: 0001172661-19-002327 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: 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: 191219771 BUSINESS ADDRESS: STREET 1: 475 TENTH AVENUE, 12TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10018 BUSINESS PHONE: 212-408-2700 MAIL ADDRESS: STREET 1: 475 TENTH AVENUE, 12TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10018 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001599731 XXXXXXXX 09-30-2019 09-30-2019 false Atika Capital Management LLC

475 Tenth Avenue, 12th Floor New York NY 10018

13F HOLDINGS REPORT 028-15941 N Brad Farber 212-408-2772 /s/ Brad Farber New York NY 11-14-2019 1 146 475017 1 0001568986 028-16711 Atika Capital Partners LP INFORMATION TABLE 2 infotable.xml AMAZON COM INC COM 023135106 5328 3069 SH SOLE 3069 0 0 AMAZON COM INC COM 023135106 7345 4231 SH DFND 1 4231 0 0 ANAPLAN INC COM 03272L108 2343 49843 SH DFND 1 49843 0 0 ANAPLAN INC COM 03272L108 1699 36157 SH SOLE 36157 0 0 ANAPLAN INC COM 03272L108 1090 23200 SH Put DFND 1 23200 0 0 ANAPLAN INC COM 03272L108 790 16800 SH Put SOLE 16800 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 1062 23200 SH Put DFND 1 23200 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 769 16800 SH Put SOLE 16800 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 3482 76095 SH SOLE 76095 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 4802 104905 SH DFND 1 104905 0 0 ARGENX SE SPONSORED ADR 04016X101 2146 18835 SH SOLE 18835 0 0 ARGENX SE SPONSORED ADR 04016X101 2959 25965 SH DFND 1 25965 0 0 ARISTA NETWORKS INC COM 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