<SEC-DOCUMENT>0001437749-23-002702.txt : 20230207
<SEC-HEADER>0001437749-23-002702.hdr.sgml : 20230207
<ACCEPTANCE-DATETIME>20230207162703
ACCESSION NUMBER:		0001437749-23-002702
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230126
FILED AS OF DATE:		20230207
DATE AS OF CHANGE:		20230207

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			O'Connor Aaron J
		CENTRAL INDEX KEY:			0001964963

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51331
		FILM NUMBER:		23595424

	MAIL ADDRESS:	
		STREET 1:		60 N FRONTAGE RD
		STREET 2:		STE 130
		CITY:			BURR RIDGE
		STATE:			IL
		ZIP:			60527

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BankFinancial CORP
		CENTRAL INDEX KEY:			0001303942
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		60 NORTH FRONTAGE ROAD
		CITY:			BURR RIDGE
		STATE:			IL
		ZIP:			60527
		BUSINESS PHONE:		(800) 894-6900

	MAIL ADDRESS:	
		STREET 1:		60 NORTH FRONTAGE ROAD
		CITY:			BURR RIDGE
		STATE:			IL
		ZIP:			60527
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rdgdoc.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2023-01-26</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001303942</issuerCik>
        <issuerName>BankFinancial CORP</issuerName>
        <issuerTradingSymbol>BFIN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001964963</rptOwnerCik>
            <rptOwnerName>O'Connor Aaron J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>60 NORTH FRONTAGE ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BURR RIDGE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60527</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOther>1</isOther>
            <otherText>Director - Affiliate</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1527.917</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Health Savings Account</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ F. Morgan Gasior, pursuant to power of attorney</signatureName>
        <signatureDate>2023-02-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
