0001172661-19-000812.txt : 20190214 0001172661-19-000812.hdr.sgml : 20190214 20190214160235 ACCESSION NUMBER: 0001172661-19-000812 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20181231 FILED AS OF DATE: 20190214 DATE AS OF CHANGE: 20190214 EFFECTIVENESS DATE: 20190214 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: 19605938 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 12-31-2018 12-31-2018 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 02-14-2019 1 140 339692 1 0001568986 028-16711 Atika Capital Partners LP INFORMATION TABLE 2 infotable.xml ALIGN TECHNOLOGY INC COM 016255101 1281 6118 SH SOLE 6118 0 0 ALIGN TECHNOLOGY INC COM 016255101 2814 13436 SH DFND 1 13436 0 0 ALLAKOS INC COM 01671P100 3249 62158 SH DFND 1 62158 0 0 ALLAKOS INC COM 01671P100 1455 27842 SH SOLE 27842 0 0 AMAZON COM INC COM 023135106 4139 2756 SH DFND 1 2756 0 0 AMAZON COM INC COM 023135106 1868 1244 SH SOLE 1244 0 0 ANTHEM INC COM 036752103 2095 7977 SH SOLE 7977 0 0 ANTHEM INC COM 036752103 4602 17523 SH DFND 1 17523 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 4870 125026 SH DFND 1 125026 0 0 ARENA PHARMACEUTICALS INC COM NEW 040047607 2141 54974 SH SOLE 54974 0 0 ARGENX SE SPONSORED ADR 04016X101 3435 35757 SH DFND 1 35757 0 0 ARGENX SE SPONSORED ADR 04016X101 1551 16143 SH SOLE 16143 0 0 ARISTA NETWORKS INC COM 040413106 1742 8267 SH DFND 1 8267 0 0 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