<SEC-DOCUMENT>0000887343-18-000095-index.html : 20180606
<SEC-HEADER>0000887343-18-000095.hdr.sgml : 20180606
<ACCEPTANCE-DATETIME>20180606164453
ACCESSION NUMBER:		0000887343-18-000095
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180604
FILED AS OF DATE:		20180606
DATE AS OF CHANGE:		20180606

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Sigrist Greg
		CENTRAL INDEX KEY:			0001740361

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20288
		FILM NUMBER:		18884251

	MAIL ADDRESS:	
		STREET 1:		1301 A STREET
		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:		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>4
<SEQUENCE>1
<FILENAME>wf-form4_152831787778382.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: wf-form4_152831787778382.html

Document 1 - RAW XML: wf-form4_152831787778382.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex-24.htm
<DESCRIPTION>POA SIGRIST 6 4 18
<TEXT>
Document 2 - file: ex-24.htm

</DOCUMENT>
</SEC-DOCUMENT>