<SEC-DOCUMENT>0000842517-18-000136-index.html : 20180807
<SEC-HEADER>0000842517-18-000136.hdr.sgml : 20180807
<ACCEPTANCE-DATETIME>20180807130922
ACCESSION NUMBER:		0000842517-18-000136
CONFORMED SUBMISSION TYPE:	S-3D
PUBLIC DOCUMENT COUNT:		12
REFERENCES 429:			333-215743
FILED AS OF DATE:		20180807
DATE AS OF CHANGE:		20180807
EFFECTIVENESS DATE:		20180807

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ISABELLA BANK Corp
		CENTRAL INDEX KEY:			0000842517
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				382830092
		STATE OF INCORPORATION:			MI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-226638
		FILM NUMBER:		18997164

	BUSINESS ADDRESS:	
		STREET 1:		401 NORTH MAIN STREET
		CITY:			MT PLEASANT
		STATE:			MI
		ZIP:			48858
		BUSINESS PHONE:		9897729471

	MAIL ADDRESS:	
		STREET 1:		401 NORTH MAIN STREET
		CITY:			MT PLEASANT
		STATE:			MI
		ZIP:			48858

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ISABELLA BANK CORP
		DATE OF NAME CHANGE:	20080602

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IBT BANCORP INC /MI/
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3D
<SEQUENCE>1
<FILENAME>isba_2018xformxs-3d.htm
<DESCRIPTION>S-3D
<TEXT>
Document 1 - file: isba_2018xformxs-3d.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5
<SEQUENCE>2
<FILENAME>isba_2018xexhibitx5.htm
<DESCRIPTION>EXHIBIT 5
<TEXT>
Document 2 - file: isba_2018xexhibitx5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-21
<SEQUENCE>3
<FILENAME>isba_2018xexhibitx21.htm
<DESCRIPTION>EXHIBIT 21
<TEXT>
Document 3 - file: isba_2018xexhibitx21.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>4
<FILENAME>isba_2018xexhibitx231.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 4 - file: isba_2018xexhibitx231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>5
<FILENAME>isba_2018xexhibitx991.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 5 - file: isba_2018xexhibitx991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>6
<FILENAME>isba_2018xexhibitx992.htm
<DESCRIPTION>EXHIBIT 99.2
<TEXT>
Document 6 - file: isba_2018xexhibitx992.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>7
<FILENAME>isba_2018xexhibitx993.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
Document 7 - file: isba_2018xexhibitx993.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.4
<SEQUENCE>8
<FILENAME>isba_2018xexhibitx994.htm
<DESCRIPTION>EXHIBIT 99.4
<TEXT>
Document 8 - file: isba_2018xexhibitx994.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.5
<SEQUENCE>9
<FILENAME>isba_2018xexhibitx995.htm
<DESCRIPTION>EXHIBIT 99.5
<TEXT>
Document 9 - file: isba_2018xexhibitx995.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>fosterswiftlogoa01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: fosterswiftlogoa01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>fosterswiftwebsitea02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: fosterswiftwebsitea02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>isbalogoa11.jpg
<DESCRIPTION>ISBA LOGO
<TEXT>
Document 12 - file: isbalogoa11.jpg

</DOCUMENT>
</SEC-DOCUMENT>