    <SEC-DOCUMENT>0001437749-22-008945-index.html : 20220414
    <SEC-HEADER>0001437749-22-008945.hdr.sgml : 20220414
    <ACCEPTANCE-DATETIME>20220414114503
    ACCESSION NUMBER:		0001437749-22-008945
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20220414
    DATE AS OF CHANGE:		20220414

    FILER:

    	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

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-51331
    		FILM NUMBER:		22826477

    	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>DEFA14A
    <SEQUENCE>1
    <FILENAME>bfin20220323_defa14a.htm
    <DESCRIPTION>FORM DEFA14A
    <TEXT>
    Document 1 - file: bfin20220323_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>n1.jpg
    <TEXT>
    Document 2 - file: n1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>n2.jpg
    <TEXT>
    Document 3 - file: n2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>