<SEC-DOCUMENT>0001415889-21-001478-index.html : 20210315
<SEC-HEADER>0001415889-21-001478.hdr.sgml : 20210315
<ACCEPTANCE-DATETIME>20210315160217
ACCESSION NUMBER:		0001415889-21-001478
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210311
FILED AS OF DATE:		20210315
DATE AS OF CHANGE:		20210315

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Wiersma Lonna
		CENTRAL INDEX KEY:			0001742119

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26719
		FILM NUMBER:		21741478

	MAIL ADDRESS:	
		STREET 1:		C/O MERCANTILE BANK CORPORATION
		STREET 2:		310 LEONARD ST.
		CITY:			GRAND RAPIDS
		STATE:			MI
		ZIP:			49504

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERCANTILE BANK CORP
		CENTRAL INDEX KEY:			0001042729
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				383360865
		STATE OF INCORPORATION:			MI
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		310 LEONARD STREET NW
		CITY:			GRAND RAPIDS
		STATE:			MI
		ZIP:			49504
		BUSINESS PHONE:		616 406-3000

	MAIL ADDRESS:	
		STREET 1:		310 LEONARD STREET NW
		CITY:			GRAND RAPIDS
		STATE:			MI
		ZIP:			49504
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-03152021_010300.xml
<TEXT>
Document 1 - file: form4-03152021_010300.html

Document 1 - RAW XML: form4-03152021_010300.xml

</DOCUMENT>
</SEC-DOCUMENT>