    <SEC-DOCUMENT>0001521951-20-000032-index.html : 20200429
    <SEC-HEADER>0001521951-20-000032.hdr.sgml : 20200429
    <ACCEPTANCE-DATETIME>20200429162541
    ACCESSION NUMBER:		0001521951-20-000032
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		18
    CONFORMED PERIOD OF REPORT:	20200424
    ITEM INFORMATION:		Submission of Matters to a Vote of Security Holders
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20200429
    DATE AS OF CHANGE:		20200429

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST BUSINESS FINANCIAL SERVICES, INC.
    		CENTRAL INDEX KEY:			0001521951
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				391576570
    		STATE OF INCORPORATION:			WI
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-34095
    		FILM NUMBER:		20830707

    	BUSINESS ADDRESS:
    		STREET 1:		401 CHARMANY DRIVE
    		CITY:			MADISON
    		STATE:			WI
    		ZIP:			53719
    		BUSINESS PHONE:		608-238-8008

    	MAIL ADDRESS:
    		STREET 1:		401 CHARMANY DRIVE
    		STREET 2:		PO BOX 44961
    		CITY:			MADISON
    		STATE:			WI
    		ZIP:			53744

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	First Business Financial Services, Inc.
    		DATE OF NAME CHANGE:	20110527
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>a042920form8-kasmvoting.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a042920form8-kasmvoting.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>exhibit991slides.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: exhibit991slides.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>finalasmslides04232020page01.jpg
    <TEXT>
    Document 3 - file: finalasmslides04232020page01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>finalasmslides04232020page03.jpg
    <TEXT>
    Document 4 - file: finalasmslides04232020page03.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>finalasmslides04232020page04.jpg
    <TEXT>
    Document 5 - file: finalasmslides04232020page04.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>finalasmslides04232020page05.jpg
    <TEXT>
    Document 6 - file: finalasmslides04232020page05.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>finalasmslides04232020page06.jpg
    <TEXT>
    Document 7 - file: finalasmslides04232020page06.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>finalasmslides04232020page07.jpg
    <TEXT>
    Document 8 - file: finalasmslides04232020page07.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>finalasmslides04232020page08.jpg
    <TEXT>
    Document 9 - file: finalasmslides04232020page08.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>finalasmslides04232020page09.jpg
    <TEXT>
    Document 10 - file: finalasmslides04232020page09.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>finalasmslides04232020page10.jpg
    <TEXT>
    Document 11 - file: finalasmslides04232020page10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>finalasmslides04232020page11.jpg
    <TEXT>
    Document 12 - file: finalasmslides04232020page11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>finalasmslides04232020page12.jpg
    <TEXT>
    Document 13 - file: finalasmslides04232020page12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>finalasmslides04232020page13.jpg
    <TEXT>
    Document 14 - file: finalasmslides04232020page13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>finalasmslides04232020page14.jpg
    <TEXT>
    Document 15 - file: finalasmslides04232020page14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>finalasmslides04232020page15.jpg
    <TEXT>
    Document 16 - file: finalasmslides04232020page15.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>finalasmslides04232020page16.jpg
    <TEXT>
    Document 17 - file: finalasmslides04232020page16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>finalasmslides04232020page17.jpg
    <TEXT>
    Document 18 - file: finalasmslides04232020page17.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>