<SEC-DOCUMENT>0001127602-25-009241.txt : 20250312
<SEC-HEADER>0001127602-25-009241.hdr.sgml : 20250312
<ACCEPTANCE-DATETIME>20250312162414
ACCESSION NUMBER:		0001127602-25-009241
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250310
FILED AS OF DATE:		20250312
DATE AS OF CHANGE:		20250312

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DeWitt Angie
		CENTRAL INDEX KEY:			0001756987
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31343
		FILM NUMBER:		25732070

	MAIL ADDRESS:	
		STREET 1:		C/O ASSOCIATED BANC-CORP
		STREET 2:		433 MAIN STREET
		CITY:			GREEN BAY
		STATE:			WI
		ZIP:			54301

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASSOCIATED BANC-CORP
		CENTRAL INDEX KEY:			0000007789
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		ORGANIZATION NAME:           	02 Finance
		IRS NUMBER:				391098068
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		433 MAIN STREET
		CITY:			GREEN BAY
		STATE:			WI
		ZIP:			54301
		BUSINESS PHONE:		920-491-7500

	MAIL ADDRESS:	
		STREET 1:		433 MAIN STREET
		CITY:			GREEN BAY
		STATE:			WI
		ZIP:			54301

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ASSOCIATED BANK SERVICES INC
		DATE OF NAME CHANGE:	19770626
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-03-10</periodOfReport>

    <issuer>
        <issuerCik>0000007789</issuerCik>
        <issuerName>ASSOCIATED BANC-CORP</issuerName>
        <issuerTradingSymbol>ASB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001756987</rptOwnerCik>
            <rptOwnerName>DeWitt Angie</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ASSOCIATED BANC-CORP</rptOwnerStreet1>
            <rptOwnerStreet2>433 MAIN STREET</rptOwnerStreet2>
            <rptOwnerCity>GREEN BAY</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>54301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>Executive Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock $0.01 Par Value</value>
            </securityTitle>
            <transactionDate>
                <value>2025-03-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8222</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.45</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>57435.6043</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock $0.01 Par Value</value>
            </securityTitle>
            <transactionDate>
                <value>2025-03-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1065</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.45</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>58500.6043</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock $0.01 Par Value</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>223.5</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>401(k) Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents vested Performance Shares granted in 2022 and subject to 3-year cliff vesting in 2025, which the reporting person has elected to defer upon vesting, and which will remain in the Executive's Deferred Compensation Plan until distributed pursuant to the reporting person's distribution election on file.</footnote>
        <footnote id="F2">Dividend equivalent units earned on vested shares,  which the reporting person has elected to defer upon vesting, and which will remain in the Executive's Deferred Compensation Plan until distributed pursuant to the reporting person's distribution election on file.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Lynn M. Floeter, attorney-in-fact for Angie DeWitt</signatureName>
        <signatureDate>2025-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
