<SEC-DOCUMENT>0001193125-17-329571-index.html : 20171101 <SEC-HEADER>0001193125-17-329571.hdr.sgml : 20171101 <ACCEPTANCE-DATETIME>20171101164856 ACCESSION NUMBER: 0001193125-17-329571 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 3 CONFORMED PERIOD OF REPORT: 20171101 ITEM INFORMATION: Completion of Acquisition or Disposition of Assets ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20171101 DATE AS OF CHANGE: 20171101 FILER: COMPANY DATA: COMPANY CONFORMED NAME: COLUMBIA BANKING SYSTEM INC CENTRAL INDEX KEY: 0000887343 STANDARD INDUSTRIAL CLASSIFICATION: STATE COMMERCIAL BANKS [6022] IRS NUMBER: 911422237 STATE OF INCORPORATION: WA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 000-20288 FILM NUMBER: 171169560 BUSINESS ADDRESS: STREET 1: 1301 A STREET CITY: TACOMA STATE: WA ZIP: 98402 BUSINESS PHONE: 2533051900 MAIL ADDRESS: STREET 1: 1301 A STREET CITY: TACOMA STATE: WA ZIP: 98402 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>d485162d8k.htm <DESCRIPTION>FORM 8-K <TEXT> Document 1 - file: d485162d8k.htm
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