<SEC-DOCUMENT>0001193125-25-141452-index.html : 20250616
<SEC-HEADER>0001193125-25-141452.hdr.sgml : 20250616
<ACCEPTANCE-DATETIME>20250616163408
ACCESSION NUMBER:		0001193125-25-141452
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		11
FILED AS OF DATE:		20250616
DATE AS OF CHANGE:		20250616

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COLUMBIA BANKING SYSTEM, INC.
		CENTRAL INDEX KEY:			0000887343
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		ORGANIZATION NAME:           	02 Finance
		EIN:				911422237
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-287607
		FILM NUMBER:		251050665

	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>
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Document 1 - file: d936202d424b3.htm

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Document 2 - file: g936202g00h04.jpg

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Document 3 - file: g936202g00h05.jpg

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Document 4 - file: g936202g00h09.jpg

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Document 5 - file: g936202g00h12.jpg

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Document 7 - file: g936202g00s10.jpg

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Document 8 - file: g936202g01q02.jpg

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Document 9 - file: g936202g03a08.jpg

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Document 10 - file: g936202g12g61.jpg

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Document 11 - file: g936202g80u43.jpg

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