Sec Form 4 Filing - JOHNSON GERALD R JR @ MERCANTILE BANK CORP - 2007-02-28

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person JOHNSON GERALD R JR 2. Issuer Name and Ticker or Trading Symbol MERCANTILE BANK CORP [ MBWM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chairman & Chief Exec. Officer (Last) (First) (Middle) MERCANTILE BANK CORPORATION, 310 LEONARD STREET 3. Date of Earliest Transaction (MM/DD/YY) 02/28/2007 (Street) GRAND RAPIDS, MI49504 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 02/28/2007 F 5,461 D $ 34.265 89,583 ( 1 ) D Common Stock 02/28/2007 F 7,860 D $ 34.225 81,723 D Common Stock 02/28/2007 M 8,952 A $ 7.463 90,675 D Common Stock 02/28/2007 M 9,378 A $ 10.172 100,053 D Common Stock 02/28/2007 M 2,678 A $ 9.329 102,731 D Common Stock 02/28/2007 M 2,678 A $ 8.629 105,409 D Common Stock 02/28/2007 M 3,827 A $ 13.066 109,236 D Common Stock 02/28/2007 M 1,274 A $ 13.066 110,510 D Common Stock 02/28/2007 M 3,645 A $ 16.941 114,155 D Common Stock 02/28/2007 M 1,214 A $ 16.941 115,369 D Common Stock 02/28/2007 M 2,778 A $ 27.942 118,147 D Common Stock 02/28/2007 M 694 A $ 27.942 118,841 D Common Stock 11,492 I 401(k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Option (right to buy) $ 7.463 02/28/2007 M 8,952 ( 2 ) 07/21/2007 Common Stock 8,952 $ 0 0 D Employee Stock Option (right to buy) $ 10.172 02/28/2007 M 9,378 07/22/2001 10/21/2008 Common Stock 9,378 $ 0 0 D Employee Stock Option (right to buy) $ 9.329 02/28/2007 M 2,678 07/22/2002 02/16/2010 Common Stock 2,678 $ 0 0 D Employee Stock Option (right to buy) $ 8.629 02/28/2007 M 2,678 01/01/2002 11/08/2010 Common Stock 2,678 $ 0 0 D Employee Stock Option (right to buy) $ 13.066 02/28/2007 M 3,827 10/18/2002 10/17/2011 Common Stock 3,827 $ 0 0 D Employee Stock Option (right to buy) $ 13.066 02/28/2007 M 1,274 01/01/2003 10/17/2011 Common Stock 1,274 $ 0 0 D Employee Stock Option (right to buy) $ 16.941 02/28/2007 M 3,645 10/17/2003 10/16/2012 Common Stock 3,645 $ 0 0 D Employee Stock Option (right to buy) $ 16.941 02/28/2007 M 1,214 01/01/2004 10/16/2012 Common Stock 1,214 $ 0 0 D Employee Stock Option (right to buy) $ 27.942 02/28/2007 M 2,778 10/23/2004 10/22/2013 Common Stock 2,778 $ 0 0 D Employee Stock Option (right to buy) $ 27.942 02/28/2007 M 694 01/01/2005 10/22/2013 Common Stock 694 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other JOHNSON GERALD R JR MERCANTILE BANK CORPORATION 310 LEONARD STREET GRAND RAPIDS, MI49504 X Chairman & Chief Exec. Officer Signatures /s/ Jerome M. Schwartz Attorney-in-fact 03/02/2007 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to a domestic relations order issued on or about December 18, 2006, Mr. Johnson has an obligation to deliver 50,000 shares of the issuer's stock to his prior spouse in December of 2012. ( 2 )This option became exercisable for 25% of the shares covered by the option on 07/22/1997, and for an additional 25% on each subsequent 07/22 until it was exercisable in full on 7/22/2000.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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