<SEC-DOCUMENT>0001521951-19-000040-index.html : 20190513
<SEC-HEADER>0001521951-19-000040.hdr.sgml : 20190513
<ACCEPTANCE-DATETIME>20190513161048
ACCESSION NUMBER:		0001521951-19-000040
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20190513
DATE AS OF CHANGE:		20190513
EFFECTIVENESS DATE:		20190513

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:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-231418
		FILM NUMBER:		19818484

	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>S-8
<SEQUENCE>1
<FILENAME>a052019forms-8.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: a052019forms-8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>legalopinionandconsentofba.htm
<DESCRIPTION>EXHIBIT 5.1 AND EXHIBIT 23.3
<TEXT>
Document 2 - file: legalopinionandconsentofba.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>consentofcrowellc.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 3 - file: consentofcrowellc.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>4
<FILENAME>consentofkpmg.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
Document 4 - file: consentofkpmg.htm

</DOCUMENT>
</SEC-DOCUMENT>