<SEC-DOCUMENT>0000887343-15-000012-index.html : 20150423 <SEC-HEADER>0000887343-15-000012.hdr.sgml : 20150423 <ACCEPTANCE-DATETIME>20150422191850 ACCESSION NUMBER: 0000887343-15-000012 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 4 CONFORMED PERIOD OF REPORT: 20150422 ITEM INFORMATION: Results of Operations and Financial Condition ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20150423 DATE AS OF CHANGE: 20150422 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: 15786645 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>colb3312015form8-k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: colb3312015form8-k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>a991colb3312015earnings.htm <DESCRIPTION>EARNINGS PRESS RELEASE <TEXT> Document 2 - file: a991colb3312015earnings.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.2 <SEQUENCE>3 <FILENAME>a992colb3312015dividend.htm <DESCRIPTION>DIVIDEND PRESS RELEASE <TEXT> Document 3 - file: a992colb3312015dividend.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>logo1q2015.jpg <DESCRIPTION>LOGO <TEXT> Document 4 - file: logo1q2015.jpg
</DOCUMENT> </SEC-DOCUMENT>