<SEC-DOCUMENT>0001127602-22-008718.txt : 20220309
<SEC-HEADER>0001127602-22-008718.hdr.sgml : 20220309
<ACCEPTANCE-DATETIME>20220309133736
ACCESSION NUMBER:		0001127602-22-008718
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220307
FILED AS OF DATE:		20220309
DATE AS OF CHANGE:		20220309

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			JOHNSON KENNETH WILLIAM
		CENTRAL INDEX KEY:			0001349029

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26584
		FILM NUMBER:		22724842

	MAIL ADDRESS:	
		STREET 1:		235 E. MAIN STREET
		CITY:			MIDLAND
		STATE:			MI
		ZIP:			48640

	FORMER NAME:	
		FORMER CONFORMED NAME:	JOHNSON KENNETH WOOD
		DATE OF NAME CHANGE:	20061031

	FORMER NAME:	
		FORMER CONFORMED NAME:	Johnson Kenneth William
		DATE OF NAME CHANGE:	20060106

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BANNER CORP
		CENTRAL INDEX KEY:			0000946673
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				911691604
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10 S FIRST AVENUE
		CITY:			WALLA WALLA
		STATE:			WA
		ZIP:			99362
		BUSINESS PHONE:		5095273636

	MAIL ADDRESS:	
		STREET 1:		10 S FIRST AVENUE
		CITY:			WALLA WALLA
		STATE:			WA
		ZIP:			99362

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST WASHINGTON BANCORP INC /WA/
		DATE OF NAME CHANGE:	19980727

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST SAVINGS BANK OF WASHINGTON BANCORP INC
		DATE OF NAME CHANGE:	19950614
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-03-07</periodOfReport>

    <issuer>
        <issuerCik>0000946673</issuerCik>
        <issuerName>BANNER CORP</issuerName>
        <issuerTradingSymbol>BANR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001349029</rptOwnerCik>
            <rptOwnerName>JOHNSON KENNETH WILLIAM</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10 SOUTH FIRST AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WALLA WALLA</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>99362</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>Executive VP, Banner Bank</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock,  $0.01 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2022-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>576</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>61.28</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23070</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock,  $0.01 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2022-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>174</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>61.28</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22896</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This award for 1,374 performance shares was originally reported on March 29, 2019 at the maximum performance criteria. This supplements that filing to note the actual number of shares that vested based on the performance results as
determined by Banner Corporation's Compensation Committee.</footnote>
        <footnote id="F2">Market price on February 28, 2022 used for administrative purposes.</footnote>
        <footnote id="F3">Shares relinquished to cover tax obligations on vesting of 576 shares of restricted stock pursuant to 2014 Omnibus Incentive Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Kenneth W. Johnson</signatureName>
        <signatureDate>2022-03-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
