<SEC-DOCUMENT>0001521951-18-000033-index.html : 20180420
<SEC-HEADER>0001521951-18-000033.hdr.sgml : 20180420
<ACCEPTANCE-DATETIME>20180420083000
ACCESSION NUMBER:		0001521951-18-000033
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20180420
DATE AS OF CHANGE:		20180420
EFFECTIVENESS DATE:		20180420

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:		18765114

	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>defa14alettersandinvitatio.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: defa14alettersandinvitatio.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>invite_inside2018v2.jpg
<TEXT>
Document 2 - file: invite_inside2018v2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>invite_outside2018.jpg
<TEXT>
Document 3 - file: invite_outside2018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>proxycard02rztafirstbusiness.jpg
<TEXT>
Document 4 - file: proxycard02rztafirstbusiness.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>proxycardpage2.jpg
<TEXT>
Document 5 - file: proxycardpage2.jpg

</DOCUMENT>
</SEC-DOCUMENT>