0001172661-19-001669.txt : 20190812 0001172661-19-001669.hdr.sgml : 20190812 20190812154237 ACCESSION NUMBER: 0001172661-19-001669 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20190630 FILED AS OF DATE: 20190812 DATE AS OF CHANGE: 20190812 EFFECTIVENESS DATE: 20190812 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: 191016313 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 06-30-2019 06-30-2019 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 08-12-2019 1 154 509102 1 0001568986 028-16711 Atika Capital Partners LP INFORMATION TABLE 2 infotable.xml ADVERUM BIOTECHNOLOGIES INC COM 00773U108 1595 134196 SH SOLE 134196 0 0 ADVERUM BIOTECHNOLOGIES INC COM 00773U108 2792 234804 SH DFND 1 234804 0 0 ALLAKOS INC COM 01671P100 624 14400 SH Put DFND 1 14400 0 0 ALLAKOS INC COM 01671P100 351 8100 SH Put SOLE 8100 0 0 AMAZON COM INC COM 023135106 7917 4181 SH DFND 1 4181 0 0 AMAZON COM INC COM 023135106 4581 2419 SH SOLE 2419 0 0 ANAPLAN INC COM 03272L108 3602 71361 SH DFND 1 71361 0 0 ANAPLAN INC COM 03272L108 2051 40639 SH SOLE 40639 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 8592 146544 SH DFND 1 146544 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 4893 83456 SH SOLE 83456 0 0 ARGENX SE SPONSORED ADR 04016X101 2075 14661 SH SOLE 14661 0 0 ARGENX SE SPONSORED ADR 04016X101 3856 27239 SH DFND 1 27239 0 0 ARISTA NETWORKS INC COM 040413106 4729 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