<SEC-DOCUMENT>0000842517-21-000152-index.html : 20210722
<SEC-HEADER>0000842517-21-000152.hdr.sgml : 20210722
<ACCEPTANCE-DATETIME>20210722172502
ACCESSION NUMBER:		0000842517-21-000152
CONFORMED SUBMISSION TYPE:	S-4
PUBLIC DOCUMENT COUNT:		11
FILED AS OF DATE:		20210722
DATE AS OF CHANGE:		20210722

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-4
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-258102
		FILM NUMBER:		211108433

	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-4
<SEQUENCE>1
<FILENAME>isba_2021xformxs-4subordin.htm
<DESCRIPTION>S-4
<TEXT>
Document 1 - file: isba_2021xformxs-4subordin.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>isba_2021xs4xex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: isba_2021xs4xex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-7
<SEQUENCE>3
<FILENAME>exhibit7.htm
<DESCRIPTION>EX-7
<TEXT>
Document 3 - file: exhibit7.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>4
<FILENAME>isba_2021xs4xex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 4 - file: isba_2021xs4xex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-25.1
<SEQUENCE>5
<FILENAME>isba_2021xs4xex251.htm
<DESCRIPTION>EX-25.1
<TEXT>
Document 5 - file: isba_2021xs4xex251.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>6
<FILENAME>isba_2021xs4xex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 6 - file: isba_2021xs4xex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>exhibit7001.jpg
<DESCRIPTION>EX-7 IMAGE
<TEXT>
Document 7 - file: exhibit7001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>exhibit7002.jpg
<DESCRIPTION>EX-7 IMAGE
<TEXT>
Document 8 - file: exhibit7002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>ibclogoa04a.jpg
<DESCRIPTION>ISABELLA BANK LOGO
<TEXT>
Document 9 - file: ibclogoa04a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>image_0.jpg
<DESCRIPTION>VARNUM LOGO
<TEXT>
Document 10 - file: image_0.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-7
<SEQUENCE>11
<FILENAME>exhibit7.pdf
<DESCRIPTION>EX-7
<TEXT>
Document 11 - file: exhibit7.pdf

</DOCUMENT>
</SEC-DOCUMENT>