<SEC-DOCUMENT>0001193125-18-152949-index.html : 20180504 <SEC-HEADER>0001193125-18-152949.hdr.sgml : 20180504 <ACCEPTANCE-DATETIME>20180504170157 ACCESSION NUMBER: 0001193125-18-152949 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 7 CONFORMED PERIOD OF REPORT: 20180503 ITEM INFORMATION: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20180504 DATE AS OF CHANGE: 20180504 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: 18808751 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>d582055d8k.htm <DESCRIPTION>FORM 8-K <TEXT> Document 1 - file: d582055d8k.htm
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