<SEC-DOCUMENT>0001047469-16-011752-index.html : 20160330
<SEC-HEADER>0001047469-16-011752.hdr.sgml : 20160330
<ACCEPTANCE-DATETIME>20160330170917
ACCESSION NUMBER:		0001047469-16-011752
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20160330
DATE AS OF CHANGE:		20160330

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAINSOURCE FINANCIAL GROUP
		CENTRAL INDEX KEY:			0000720002
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				351562245
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-209479
		FILM NUMBER:		161540597

	BUSINESS ADDRESS:	
		STREET 1:		201 N BROADWAY
		STREET 2:		PO BOX 87
		CITY:			GREENSBURG
		STATE:			IN
		ZIP:			47240
		BUSINESS PHONE:		8126630157

	MAIL ADDRESS:	
		STREET 1:		201 NORTH BROADWAY
		STREET 2:		P O BOX 87
		CITY:			GREENSBURG
		STATE:			IN
		ZIP:			47240

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INDIANA UNITED BANCORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>a2228058z424b3.htm
<DESCRIPTION>424(B)(3)
<TEXT>
Document 1 - file: a2228058z424b3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g461671.jpg
<DESCRIPTION>G461671.JPG
<TEXT>
Document 2 - file: g461671.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g449636.jpg
<DESCRIPTION>G449636.JPG
<TEXT>
Document 3 - file: g449636.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g682562.jpg
<DESCRIPTION>G682562.JPG
<TEXT>
Document 4 - file: g682562.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g725431.jpg
<DESCRIPTION>G725431.JPG
<TEXT>
Document 5 - file: g725431.jpg

</DOCUMENT>
</SEC-DOCUMENT>