-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, MdRRkXz2NLP2eOO3w6VV4sBFwHZurIfgvFYN2V2bm9DJQGepqtAj31J/1/c6vJpv M+TeDD+33zocEN4TTdDfXQ== 0001397948-09-000005.txt : 20090702 0001397948-09-000005.hdr.sgml : 20090702 20090702192817 ACCESSION NUMBER: 0001397948-09-000005 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20090630 FILED AS OF DATE: 20090702 DATE AS OF CHANGE: 20090702 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Roberts Kent CENTRAL INDEX KEY: 0001397948 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-20288 FILM NUMBER: 09928745 MAIL ADDRESS: STREET 1: 1301 A STREET MS3100 CITY: TACOMA STATE: WA ZIP: 98402 ISSUER: 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 BUSINESS ADDRESS: STREET 1: 1102 BROADWAY PLAZA CITY: TACOMA STATE: WA ZIP: 98402 BUSINESS PHONE: 2533051900 MAIL ADDRESS: STREET 1: 1102 BROADWAY PLAZA CITY: TACOMA STATE: WA ZIP: 98402 4 1 edgar.xml PRIMARY DOCUMENT X0303 4 2009-06-30 0000887343 COLUMBIA BANKING SYSTEM INC COLB 0001397948 Roberts Kent 1301 "A" STREET, MS 3100, STE 800 TACOMA, WA 98402 0 1 0 0 Executive Vice President Common Stock 2009-06-30 4 A 0 1683 9.207 A 14865 D Common Stock 773 I 401 (k) This was an ESPP purchase. /s/ Cathleen Dent 2009-07-02 EX-24 2 poaroberts42707.htm




                         Power of Attorney







 This Statement confirms that the undersigned, has

authorized and designated Melanie J. Dressel, Cathleen Dent,

 Pat Manwell and Christine Henkel, each with full power to

 act alone, to execute and file on the undersigned's behalf all

Forms 3, 4, and 5 (including any amendments thereto) that the

undersigned may be required to file with the U.S. Securities and Exchange

Commission as a result of the undersigned's ownership of or

transactions in securities of Columbia Banking System, Inc.  The

authority of Melanie J. Dressel, Cathleen Dent, Pat Manwell and Christine

Henkel under this Statement shall continue until the undersigned

is not longer required to file Forms 3, 4, and 5 with regard to

his/her ownership of or transactions in securities of Columbia

Banking System, Inc., unless earlier revoked in writing.  The

undersigned acknowledges that none of Columbia Banking System,

Inc., Melanie J. Dressel, Cathleen Dent, Pat Manwell or Christine Henkel

is assuming any of the undersigned's responsibilities to comply

with Section 16 of the Securities Exchange Act of 1934.







Date:  April 27, 2007  Signature: /s/  Kent Roberts

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