MERCANTILE BANK CORP 10-Q

Item 5. Other Information. Not applicable. 61 Table of Contents MERCANTILE BANK CORPORATION Item 6. Exhibits EXHIBIT NO. EXHIBIT DESCRIPTION 3.1 Articles of Incorporation of Mercantile Bank Corporation, including all amendments thereto, incorporated by reference to Exhibit 3.1 of our Form S-4 Registration Statement filed February 16, 2022 3.2 Our Amended and Restated Bylaws dated as of February 26, 2015 are incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed February 26, 2015 31 Rule 13a-14(a) Certifications 32.1 Section 1350 Chief Executive Officer Certification 32.2 Section 1350 Chief Financial Officer Certification 101 The following financial information from Mercantile’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2024, formatted in Inline XBRL (eXtensible Business Reporting Language): (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Income, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Changes in Shareholders’ Equity, (v) the Consolidated Statements of Cash Flows, and (vi) the Notes to Consolidated Financial Statements 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) 62 Table of Contents 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, thereunto duly authorized, on May 3, 2024. MERCANTILE BANK CORPORATION By: /s/ Robert B. Kaminski, Jr. Robert B. Kaminski, Jr. President and Chief Executive Officer (Principal Executive Officer) By: /s/ Charles E. Christmas Charles E. Christmas Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer) 63