Item 2.02 Results of Operations and Financial Condition.
Earnings Release. On April 15, 2009, Mercantile Bank Corporation issued a press release announcing earnings and other financial results for the quarter ended March 31, 2009. A copy of the press release is furnished as Exhibit 99.1 to this report and incorporated here by reference.
In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.
Item 9.01 Financial Statements and Exhibits.

(d) Exhibits. Exhibit Number Description 99.1 Press release of Mercantile Bank Corporation reporting financial results and earnings for the quarter ended March 31, 2009.

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Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Mercantile Bank Corporation

By: /s/ Charles E. Christmas Charles E. Christmas Senior Vice President, Chief Financial Officer and Treasurer

Date: April 15, 2009

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Exhibit Index Exhibit Number Description 99.1 Press release of Mercantile Bank Corporation reporting financial results and earnings for the quarter ended March 31, 2009