<SEC-DOCUMENT>0001521951-21-000032-index.html : 20210309
<SEC-HEADER>0001521951-21-000032.hdr.sgml : 20210309
<ACCEPTANCE-DATETIME>20210309091042
ACCESSION NUMBER:		0001521951-21-000032
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20210309
DATE AS OF CHANGE:		20210309

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34095
		FILM NUMBER:		21724229

	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>DEFA14A
<SEQUENCE>1
<FILENAME>defa14anoticeandbrokernoti.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: defa14anoticeandbrokernoti.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>a02162021brokernotice_page.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: a02162021brokernotice_page.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>a02162021shareholdernotice.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: a02162021shareholdernotice.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>brokernotice_pagex11.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: brokernotice_pagex11.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>brokernotice_pagex31.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: brokernotice_pagex31.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>brokernotice_pagex3new1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: brokernotice_pagex3new1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>notice_pagex21.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: notice_pagex21.gif

</DOCUMENT>
</SEC-DOCUMENT>