<SEC-DOCUMENT>0000887343-25-000059.txt : 20250226
<SEC-HEADER>0000887343-25-000059.hdr.sgml : 20250226
<ACCEPTANCE-DATETIME>20250226151609
ACCESSION NUMBER: 0000887343-25-000059
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20250225
FILED AS OF DATE: 20250226
DATE AS OF CHANGE: 20250226
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: O'HAVER CORT L
CENTRAL INDEX KEY: 0001490201
ORGANIZATION NAME:
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 000-20288
FILM NUMBER: 25669508
MAIL ADDRESS:
STREET 1: C/O COLUMBIA BANKING SYSTEM, INC.
STREET 2: PO BOX 2156, MS WA0253-9
CITY: TACOMA
STATE: WA
ZIP: 98401-2156
ISSUER:
COMPANY DATA:
COMPANY CONFORMED NAME: COLUMBIA BANKING SYSTEM, INC.
CENTRAL INDEX KEY: 0000887343
STANDARD INDUSTRIAL CLASSIFICATION: STATE COMMERCIAL BANKS [6022]
ORGANIZATION NAME: 02 Finance
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
FORMER COMPANY:
FORMER CONFORMED NAME: COLUMBIA BANKING SYSTEM INC
DATE OF NAME CHANGE: 19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1740600962.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
<schemaVersion>X0508</schemaVersion>
<documentType>4</documentType>
<periodOfReport>2025-02-25</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
<issuer>
<issuerCik>0000887343</issuerCik>
<issuerName>COLUMBIA BANKING SYSTEM, INC.</issuerName>
<issuerTradingSymbol>COLB</issuerTradingSymbol>
</issuer>
<reportingOwner>
<reportingOwnerId>
<rptOwnerCik>0001490201</rptOwnerCik>
<rptOwnerName>O'HAVER CORT L</rptOwnerName>
</reportingOwnerId>
<reportingOwnerAddress>
<rptOwnerStreet1>C/O COLUMBIA BANKING SYSTEM, INC.</rptOwnerStreet1>
<rptOwnerStreet2>PO BOX 2156, MS 3100</rptOwnerStreet2>
<rptOwnerCity>TACOMA</rptOwnerCity>
<rptOwnerState>WA</rptOwnerState>
<rptOwnerZipCode>98401-2156</rptOwnerZipCode>
<rptOwnerStateDescription></rptOwnerStateDescription>
</reportingOwnerAddress>
<reportingOwnerRelationship>
<isDirector>1</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>Executive Chairman</officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<aff10b5One>0</aff10b5One>
<nonDerivativeTable></nonDerivativeTable>
<derivativeTable>
<derivativeTransaction>
<securityTitle>
<value>Restricted Stock Unit</value>
</securityTitle>
<conversionOrExercisePrice>
<footnoteId id="F1"/>
</conversionOrExercisePrice>
<transactionDate>
<value>2025-02-25</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>A</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts>
<transactionShares>
<value>56390</value>
</transactionShares>
<transactionPricePerShare>
<value>26.60</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate>
<footnoteId id="F1"/>
</exerciseDate>
<expirationDate>
<footnoteId id="F1"/>
</expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value>
</underlyingSecurityTitle>
<underlyingSecurityShares>
<value>56390</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>56390</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</derivativeTransaction>
<derivativeTransaction>
<securityTitle>
<value>Performance Restricted Stock Unit</value>
</securityTitle>
<conversionOrExercisePrice>
<footnoteId id="F2"/>
</conversionOrExercisePrice>
<transactionDate>
<value>2025-02-25</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>A</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts>
<transactionShares>
<value>18796</value>
</transactionShares>
<transactionPricePerShare>
<value>26.60</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate>
<footnoteId id="F2"/>
</exerciseDate>
<expirationDate>
<footnoteId id="F2"/>
</expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value>
</underlyingSecurityTitle>
<underlyingSecurityShares>
<value>18796</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>102734</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</derivativeTransaction>
<derivativeTransaction>
<securityTitle>
<value>Performance Restricted Stock Unit</value>
</securityTitle>
<conversionOrExercisePrice>
<footnoteId id="F3"/>
</conversionOrExercisePrice>
<transactionDate>
<value>2025-02-25</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>A</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts>
<transactionShares>
<value>18796</value>
</transactionShares>
<transactionPricePerShare>
<value>26.60</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate>
<footnoteId id="F3"/>
</exerciseDate>
<expirationDate>
<footnoteId id="F3"/>
</expirationDate>
<underlyingSecurity>
<underlyingSecurityTitle>
<value>Common Stock</value>
</underlyingSecurityTitle>
<underlyingSecurityShares>
<value>18796</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>121530</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</derivativeTransaction>
</derivativeTable>
<footnotes>
<footnote id="F1">Restricted stock units granted 02/25/2025. The grant will vest 33.33% per year over three years.</footnote>
<footnote id="F2">Performance restricted stock units granted 02/25/2025. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.</footnote>
<footnote id="F3">Performance restricted stock units granted 02/25/2025. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.</footnote>
</footnotes>
<remarks></remarks>
<ownerSignature>
<signatureName>/s/ Lisa M. White, Attorney-in-fact</signatureName>
<signatureDate>2025-02-26</signatureDate>
</ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>