<SEC-DOCUMENT>0001140361-22-010103-index.html : 20220318
<SEC-HEADER>0001140361-22-010103.hdr.sgml : 20220318
<ACCEPTANCE-DATETIME>20220318151528
ACCESSION NUMBER:		0001140361-22-010103
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		24
CONFORMED PERIOD OF REPORT:	20220427
FILED AS OF DATE:		20220318
DATE AS OF CHANGE:		20220318

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20288
		FILM NUMBER:		22752225

	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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLUMBIA BANKING SYSTEM INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>ny20002429x1_def14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: ny20002429x1_def14a.htm

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<DOCUMENT>
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<FILENAME>logo_columbiabankingx1.jpg
<TEXT>
Document 2 - file: logo_columbiabankingx1.jpg

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<FILENAME>ny20002429x1_chart01x2.jpg
<TEXT>
Document 3 - file: ny20002429x1_chart01x2.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>ny20002429x1_clintstein.jpg
<TEXT>
Document 4 - file: ny20002429x1_clintstein.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>ny20002429x1_craigeerkes.jpg
<TEXT>
Document 5 - file: ny20002429x1_craigeerkes.jpg

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<SEQUENCE>6
<FILENAME>ny20002429x1_elizabethseaton.jpg
<TEXT>
Document 6 - file: ny20002429x1_elizabethseaton.jpg

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<FILENAME>ny20002429x1_ericforrest.jpg
<TEXT>
Document 7 - file: ny20002429x1_ericforrest.jpg

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<DOCUMENT>
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<FILENAME>ny20002429x1_fordelsaesser.jpg
<TEXT>
Document 8 - file: ny20002429x1_fordelsaesser.jpg

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<SEQUENCE>9
<FILENAME>ny20002429x1_graphic01x1.jpg
<TEXT>
Document 9 - file: ny20002429x1_graphic01x1.jpg

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<FILENAME>ny20002429x1_internetx1.jpg
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Document 10 - file: ny20002429x1_internetx1.jpg

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<FILENAME>ny20002429x1_janineterrano.jpg
<TEXT>
Document 11 - file: ny20002429x1_janineterrano.jpg

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<FILENAME>ny20002429x1_lauraschrag.jpg
<TEXT>
Document 12 - file: ny20002429x1_lauraschrag.jpg

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<FILENAME>ny20002429x1_mail.jpg
<TEXT>
Document 13 - file: ny20002429x1_mail.jpg

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<FILENAME>ny20002429x1_markfinkelstein.jpg
<TEXT>
Document 14 - file: ny20002429x1_markfinkelstein.jpg

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<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>ny20002429x1_michellelantow.jpg
<TEXT>
Document 15 - file: ny20002429x1_michellelantow.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>ny20002429x1_pc1.jpg
<TEXT>
Document 16 - file: ny20002429x1_pc1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>ny20002429x1_pc2.jpg
<TEXT>
Document 17 - file: ny20002429x1_pc2.jpg

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<FILENAME>ny20002429x1_phonex1.jpg
<TEXT>
Document 18 - file: ny20002429x1_phonex1.jpg

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<SEQUENCE>19
<FILENAME>ny20002429x1_randallund.jpg
<TEXT>
Document 19 - file: ny20002429x1_randallund.jpg

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<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>ny20002429x1_smaenumata.jpg
<TEXT>
Document 20 - file: ny20002429x1_smaenumata.jpg

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<SEQUENCE>21
<FILENAME>ny20002429x1_tracymackaskew.jpg
<TEXT>
Document 21 - file: ny20002429x1_tracymackaskew.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>sig_clintstein.jpg
<TEXT>
Document 22 - file: sig_clintstein.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>sig_craigeerkes.jpg
<TEXT>
Document 23 - file: sig_craigeerkes.jpg

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>sig_kumibaruffi.jpg
<TEXT>
Document 24 - file: sig_kumibaruffi.jpg

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