MBWM / Mercantile Bank Corporation - SEC-arkiveringar, Årsredovisning, Fullmaktsutlåtande

Mercantile Bank Corporation
US ˙ NasdaqGS ˙ US5873761044

Grundläggande statistik
LEI P16VZZCKTJ5IONL6XE37
CIK 1042729
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Mercantile Bank Corporation
SEC Filings (Chronological Order)
Denna sida innehåller en komplett, kronologisk lista över SEC-arkiveringar, exklusive ägande-arkiveringar som vi tillhandahåller på andra ställen.
May 27, 2026 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto Commission file number 000-26719 Mercantile Bank 401(k)

May 21, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 21, 2026 Mercantile Bank Corp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 21, 2026 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 1, 2026 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 ☐ TRANSITION REPORT PURSUANT TO SECTION 13

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK CO

April 21, 2026 EX-99.2

EXHIBIT 99.2

Exhibit 99.2

April 21, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 21, 2026 Mercantile Bank Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 21, 2026 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commiss

April 21, 2026 EX-99.1

Mercantile Bank Corporation Announces Solid First Quarter 2026 Results Growth in net interest income and key fee income categories with ongoing strength in asset quality measures and capital levels highlight the quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Solid First Quarter 2026 Results Growth in net interest income and key fee income categories with ongoing strength in asset quality measures and capital levels highlight the quarter GRAND RAPIDS, Mich., April 21, 2026 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $22.7 million, or $1.32 per diluted share, for t

April 2, 2026 ARS

ARS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTILE BANK CORPORATION (E

April 2, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14

March 19, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 19, 2026 Mercantile Bank Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 19, 2026 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

March 19, 2026 EX-10.1

MERCANTILE BANK CORPORATION/MERCANTILE BANK 2026 MERCANTILE EXECUTIVE OFFICER BONUS PLAN

Exhibit 10.1 CERTAIN INFORMATION IDENTIFIED BY “[***]” HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE OF INFORMATION THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. MERCANTILE BANK CORPORATION/MERCANTILE BANK 2026 MERCANTILE EXECUTIVE OFFICER BONUS PLAN 1. Purpose of this Plan This 2026 Mercantile Executive Officer Bonus Plan (this “Plan”) is designed to

February 27, 2026 EX-97

Clawback Policy

EXHIBIT 97 Clawback Policy Introduction The Board of Directors (the "Board") of Mercantile Bank Corporation (the “Company”) believes that it is in the best interests of the Company, its shareholders, and its wholly owned subsidiary, Mercantile Bank (the “Bank”), to create and maintain a culture that emphasizes integrity and accountability.

February 27, 2026 EX-14

CODE OF ETHICS

EXHIBIT 14 CODE OF ETHICS I. OVERVIEW Mercantile Bank Corporation’s Code of Ethics (“Code”) sets forth the guiding principles by which we operate our company and conduct our daily business with our shareholders, customers, vendors and with each other. These principles apply to all of the directors, officers and employees of Mercantile Bank Corporation and all of its subsidiaries (referred to as th

February 27, 2026 EX-19

POLICY ON INSIDER TRADING

EXHIBIT 19 POLICY ON INSIDER TRADING This Insider Trading Policy (the "Policy") describes the standards of Mercantile Bank Corporation (the "Company") and its subsidiaries with regard to trading, and causing the trading of, the Company's securities or securities of certain other publicly-traded companies while in possession of confidential information.

February 27, 2026 EX-4.7

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

EXHIBIT 4.7 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Mercantile Bank Corporation (“our,” “we,” “us,” “Mercantile” or “our company”) has one class of security registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), common stock, without par value (“common stock”). Description of o

February 27, 2026 EX-21

SUBSIDIARIES OF MERCANTILE BANK CORPORATION

EXHIBIT 21 SUBSIDIARIES OF MERCANTILE BANK CORPORATION Eastern Michigan Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Community Partners LLC, a Michigan limited liability company Wholly-owned subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each a Delaware business trust subsidiary of Mercantile Bank Corporation Mercantile Insurance Center, Inc.

February 27, 2026 EX-10.22

DIRECTOR FEE SUMMARY

EXHIBIT 10.22 DIRECTOR FEE SUMMARY Set forth below is a summary of the director fee arrangements for non-employee directors serving on the Board of Directors of Mercantile Bank Corporation (“Mercantile”). Director compensation is based on a single retainer figure with one-half (50%) of the retainer value paid in shares of Mercantile common stock as of the annual meeting date, with the share count

February 27, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTI

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTI

January 20, 2026 EX-99.1

Mercantile Bank Corporation Announces Strong Fourth Quarter and Full-Year 2025 Results Increases in net interest income and certain noninterest income categories, sustained strength in asset quality metrics and capital levels, and acquisition of East

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Fourth Quarter and Full-Year 2025 Results Increases in net interest income and certain noninterest income categories, sustained strength in asset quality metrics and capital levels, and acquisition of Eastern Michigan Financial Corporation highlight the year GRAND RAPIDS, Mich., January 20, 2025 – Mercantile Bank Corporation (NASDAQ: MBWM)

January 20, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 20, 2026 Mercantile Bank

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 20, 2026 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commi

January 20, 2026 EX-99.1

EXHIBIT 99.1

Exhibit 99.2

January 20, 2026 EX-99.2

EXHIBIT 99.2

Exhibit 99.2

January 20, 2026 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 20, 2026 Mercantile Ban

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 20, 2026 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Com

December 31, 2025 EX-99.1

Mercantile Bank Corporation Announces Completion of Merger with Eastern Michigan Financial Corporation

Exhibit 99.1 Mercantile Bank Corporation Announces Completion of Merger with Eastern Michigan Financial Corporation GRAND RAPIDS, Mich., December 31, 2025 - Mercantile Bank Corporation (NASDAQ: MBWM) (“Mercantile”) announced today the completion of its previously announced merger with Eastern Michigan Financial Corporation (“Eastern”). This strategic combination brings together two financial insti

December 31, 2025 EX-10.1

CREDIT AGREEMENT by and between MERCANTILE BANK CORPORATION (the “Borrower”) U.S. BANK NATIONAL ASSOCIATION (the “Bank”) Dated as of December 24, 2025 Table of Contents

Exhibit 10.1 Execution Version CREDIT AGREEMENT by and between MERCANTILE BANK CORPORATION (the “Borrower”) and U.S. BANK NATIONAL ASSOCIATION (the “Bank”) Dated as of December 24, 2025 Table of Contents Page Article I. DEFINITIONS AND ACCOUNTING TERMS 1 Section 1.1. Defined Terms 1 Section 1.2. Accounting Terms and Calculations 11 Section 1.3. Computation of Time Periods 11 Section 1.4. Other Def

December 31, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 24, 2025 Mercantile Bank

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 24, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

December 19, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 19, 2025 Mercantile Bank

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 19, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

December 17, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 16, 2025 Mercantile Bank

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 16, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

December 17, 2025 EX-99.1

Mercantile Bank Corporation and Eastern Michigan Financial Corporation Announce Receipt of All Required Regulatory Approvals for Pending Merger

Exhibit 99.1 Mercantile Bank Corporation and Eastern Michigan Financial Corporation Announce Receipt of All Required Regulatory Approvals for Pending Merger December 16, 2025 - Mercantile Bank Corporation ("Mercantile") (NASDAQ: MBWM) and Eastern Michigan Financial Corporation ("Eastern") (OTCID: EFIN) today jointly announced that the Federal Reserve Bank of Chicago has approved the proposed merge

November 14, 2025 424B3

MERGER PROPOSED — YOUR VOTE IS VERY IMPORTANT

Filed Pursuant to Rule 424(b)(3) Registration Statement No. 333-290303 MERGER PROPOSED — YOUR VOTE IS VERY IMPORTANT To the Shareholders of Eastern Michigan Financial Corporation: On July 22, 2025, Mercantile Bank Corporation, or “Mercantile,” and Eastern Michigan Financial Corporation, or “EFIN,” entered into an Agreement and Plan of Merger, as amended by the First Amendment dated October 5, 2025

October 31, 2025 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BAN

October 21, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 21, 2025 Mercantile Bank

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 21, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commi

October 21, 2025 EX-99.1

CONSENT OF PIPER SANDLER & CO.

Exhibit 99.1 CONSENT OF PIPER SANDLER & CO. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Eastern Michigan Financial Corporation (the “Company”) as an Appendix to the Proxy Statement/Prospectus relating to the proposed merger of the Company with Mercantile Bank Corporation contained in the Registration Statement on Form S-4, as filed with the Securities and

October 21, 2025 EX-21.1

Mercantile Bank, a Michigan banking corporation

Exhibit 21.1 Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Community Partners LLC, a Michigan limited liability company Wholly-owned subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each

October 21, 2025 S-4/A

As filed with the Securities and Exchange Commission on October 20, 2025

Table of Contents As filed with the Securities and Exchange Commission on October 20, 2025 Registration No.

October 21, 2025 EX-99.2

EXHIBIT 99.2

Exhibit 99.2

October 21, 2025 EX-99.2

EXHIBIT 99.2

Exhibit 99.2

October 21, 2025 EX-99.1

Mercantile Bank Corporation Announces Strong Third Quarter 2025 Results Growth in net interest income and certain noninterest income categories and continued strength in asset quality metrics and capital measures highlight the quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Third Quarter 2025 Results Growth in net interest income and certain noninterest income categories and continued strength in asset quality metrics and capital measures highlight the quarter GRAND RAPIDS, Mich., October 21, 2025 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $23.8 million, or $1.46 per dil

September 19, 2025 LETTER

LETTER

September 19, 2025 Raymond E. Reitsma Chief Executive Officer Mercantile Bank Corporation 310 Leonard Street, NW Grand Rapids, MI 49504 Re: Mercantile Bank Corporation Registration Statement on Form S-4 Filed September 16, 2025 File No. 333-290303 Dear Raymond E. Reitsma: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and

September 16, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-4 MERCANTILE BANK CORP Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock Other 923,942 $ 83,422,264.

September 16, 2025 S-4

As filed with the Securities and Exchange Commission on September 16, 2025

Table of Contents As filed with the Securities and Exchange Commission on September 16, 2025 Registration No.

September 16, 2025 EX-99.1

CONSENT OF PIPER SANDLER & CO.

Exhibit 99.1 CONSENT OF PIPER SANDLER & CO. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Eastern Michigan Financial Corporation (the “Company”) as an Appendix to the Proxy Statement/Prospectus relating to the proposed merger of the Company with Mercantile Bank Corporation contained in the Registration Statement on Form S-4, as filed with the Securities and

September 16, 2025 EX-21.1

Mercantile Bank, a Michigan banking corporation

Exhibit 21.1 Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Community Partners LLC, a Michigan limited liability company Wholly-owned subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each

August 1, 2025 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 O

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK COR

July 29, 2025 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 22, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 22, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of inco

July 29, 2025 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 22, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 22, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of inco

July 22, 2025 EX-99.3

Mercantile Bank Corporation Conference Call & Webcast Presentation dated July 22, 2025.

Exhibit 99.3

July 22, 2025 EX-99.4

Merger Presentation dated July 22, 2025.

Exhibit 99.4

July 22, 2025 EX-2.1

Agreement and Plan of Merger dated July 22, 2025, between Mercantile Bank Corporation, Eastern Michigan Financial Corporation and Shamrock Merger Sub Inc.

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER BY AND AMONG MERCANTILE BANK CORPORATION, SHAMROCK MERGER SUB INC. AND EASTERN MICHIGAN FINANCIAL CORPORATION DATED AS OF July 22, 2025 TABLE OF CONTENTS ARTICLE 1 THE MERGER; BANK MERGER 2 Section 1.1 The Merger 2 Section 1.2 Closing 2 Section 1.3 Effective Time 2 Section 1.4 Effects of the Merger 2 Section 1.5 Organizational Documents; Directors and Offic

July 22, 2025 EX-99.1

Mercantile Bank Corporation Announces Robust Second Quarter 2025 Results and Partnership with Eastern Michigan Financial Corporation Net interest income expansion, substantial noninterest income growth, and ongoing strength in asset quality metrics a

Exhibit 99.1 Mercantile Bank Corporation Announces Robust Second Quarter 2025 Results and Partnership with Eastern Michigan Financial Corporation Net interest income expansion, substantial noninterest income growth, and ongoing strength in asset quality metrics and capital levels highlight the quarter GRAND RAPIDS, Mich., July 22, 2025 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") re

July 22, 2025 EX-10.1

Form of Voting Agreement.

Exhibit 10.1 FORM VOTING AGREEMENT This Voting Agreement (this “Agreement”) is entered into as of July 22, 2025, by and between the undersigned holder (“Shareholder”) of Common Stock (as defined below) and Mercantile Bank Corporation, a Michigan corporation (“Acquiror”). RECITALS WHEREAS, as of the date hereof, Shareholder “beneficially owns” (as such term, along with “owns beneficially”, “benefic

July 22, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 22, 2025 Mercantile Bank Cor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 22, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commissi

July 22, 2025 EX-99.2

Mercantile Bank Corporation and Eastern Michigan Financial Corporation Announce Definitive Merger Agreement Partnership strengthens Mercantile’s position as Michigan’s largest bank by total assets, enhances core deposit base and liquidity, and accele

Exhibit 99.2 Mercantile Bank Corporation and Eastern Michigan Financial Corporation Announce Definitive Merger Agreement Partnership strengthens Mercantile’s position as Michigan’s largest bank by total assets, enhances core deposit base and liquidity, and accelerates growth in key markets Grand Rapids, Mich. – July 22, 2025 – Mercantile Bank Corporation (“Mercantile”) (NASDAQ: MBWM) and Eastern M

June 13, 2025 EX-10.1

MERCANTILE BANK CORPORATION EMPLOYEE STOCK PURCHASE PLAN OF 2025 SECTION 1 PURPOSE OF PLAN

Exhibit 10.1 MERCANTILE BANK CORPORATION EMPLOYEE STOCK PURCHASE PLAN OF 2025 SECTION 1 PURPOSE OF PLAN The purpose of the Mercantile Bank Corporation Employee Stock Purchase Plan of 2025 is to attract and retain the best available personnel, to encourage Employees of the Company and the Company's Subsidiaries to promote the best interests of the Company, and to align the interests of Employees wi

June 13, 2025 EX-FILING FEES

Calculation of Registration Fee

Exhibit 107 CALCULATION OF REGISTRATION FEE Form S-8 (Form Type) Mercantile Bank Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee Equity Common Stock 457(c) and 457(h) 200,000 Shares $ 45.

June 13, 2025 S-8

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Mercantile Bank Corporation (Exact name of registrant as specified in its charter)

Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 38-3360865 (State or other jurisdiction of of incorporation or organization) (I.R.S. Employer Identification No.) 310 Leonard Street NW, Grand Rapids

June 13, 2025 EX-4.1

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934

Exhibit 4.1 DESCRIPTION OF REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 Mercantile Bank Corporation has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): our common stock. References to the “Company,” “we,” “us” and “our” refer to Mercantile Bank Corporation and not to any

June 10, 2025 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto Commission file number 000-26719 Mercantile Bank 401(k)

May 22, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 22, 2025 Mercantile Bank Corp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 22, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 2, 2025 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK CO

April 22, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 22, 2025 Mercantile Bank Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 22, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commiss

April 22, 2025 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated April 22, 2025.

Exhibit 99.2

April 22, 2025 EX-99.1

Mercantile Bank Corporation Announces Strong First Quarter 2025 Results Growth in net interest income, notable increases in certain noninterest income categories, sustained strength in asset quality metrics, and continuing solid capital position high

Exhibit 99.1 Mercantile Bank Corporation Announces Strong First Quarter 2025 Results Growth in net interest income, notable increases in certain noninterest income categories, sustained strength in asset quality metrics, and continuing solid capital position highlight the quarter GRAND RAPIDS, Mich., April 22, 2025 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of

April 4, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14

April 4, 2025 ARS

FORM ARS

ANNUAL REPORT 2024Since opening our doors in 1997, Mercantile Bank has consistently demonstrated unwavering commitment to excellence, which has driven our strong financial performance.

March 20, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 20, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

March 20, 2025 EX-10.1

2025 Mercantile Executive Officer Bonus Plan

Exhibit 10.1 MERCANTILE BANK CORPORATION/MERCANTILE BANK 2025 MERCANTILE EXECUTIVE OFFICER BONUS PLAN 1. Purpose of this Plan This 2025 Mercantile Executive Officer Bonus Plan (this “Plan”) is designed to reflect that the directors of Mercantile Bank Corporation (the “Company”) and Mercantile Bank (the “Bank”) believe that the Company’s shareholders are willing to share financially in operating re

March 3, 2025 EX-19

Policy on Insider Trading

EXHIBIT 19 POLICY ON INSIDER TRADING This Insider Trading Policy (the "Policy") describes the standards of Mercantile Bank Corporation (the "Company") and its subsidiaries with regard to trading, and causing the trading of, the Company's securities or securities of certain other publicly-traded companies while in possession of confidential information.

March 3, 2025 EX-10.22

Director Fee Summary*

EXHIBIT 10.22 DIRECTOR FEE SUMMARY Set forth below is a summary of the director fee arrangements for non-employee directors serving on the Board of Directors of Mercantile Bank Corporation (“Mercantile”). Director compensation is based on a single retainer figure and meeting fees have been discontinued. The retainer fee is higher to each director who serves as Chairman of our Audit Committee, Comp

March 3, 2025 EX-21

Subsidiaries of the Company

EXHIBIT 21 SUBSIDIARIES OF MERCANTILE BANK CORPORATION Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Community Partners LLC, a Michigan limited liability company Wholly-owned subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each a Delaware business trust subsidiary of Mercantile Bank Corporation Mercantile Insurance Center, Inc.

March 3, 2025 EX-97

Clawback Policy

EXHIBIT 97 Clawback Policy Introduction The Board of Directors (the "Board") of Mercantile Bank Corporation (the “Company”) believes that it is in the best interests of the Company, its shareholders, and its wholly owned subsidiary, Mercantile Bank (the “Bank”), to create and maintain a culture that emphasizes integrity and accountability.

March 3, 2025 EX-14

Code of Ethics

EXHIBIT 14 CODE OF ETHICS I. OVERVIEW Mercantile Bank Corporation’s Code of Ethics (“Code”) sets forth the guiding principles by which we operate our company and conduct our daily business with our shareholders, customers, vendors and with each other. These principles apply to all of the directors, officers and employees of Mercantile Bank Corporation and all of its subsidiaries (referred to as th

March 3, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTILE BANK CORPORATIO

February 6, 2025 EX-10.2

Form of Standard Restricted Stock Award Agreement, in connection with the Mercantile Bank Corporation Stock Incentive Plan of 2023

Exhibit 10.2 MERCANTILE BANK CORPORATION STOCK INCENTIVE PLAN OF 2023 RESTRICTED STOCK AWARD AGREEMENT NOTIFICATION OF AWARD AND TERMS AND CONDITIONS OF AWARD Grant Date: Restricted Period(s) See Paragraph 5 This Restricted Stock Award Agreement (the “Agreement”) contains the terms and conditions of the restricted stock award granted to you by Mercantile Bank Corporation, a Michigan corporation (t

February 6, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 6, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

February 6, 2025 EX-10.1

Form of Performance-Based Restricted Stock Award Agreement, in connection with the Mercantile Bank Corporation Stock Incentive Plan of 2023

Exhibit 10.1 MERCANTILE BANK CORPORATION STOCK INCENTIVE PLAN OF 2023 PERFORMANCE-BASED RESTRICTED STOCK AWARD AGREEMENT NOTIFICATION OF AWARD AND TERMS AND CONDITIONS OF AWARD Grant Date: Performance Period: This Performance-Based Restricted Stock Award Agreement (the “Agreement”) contains the terms and conditions of the performance-based restricted stock award granted to you by Mercantile Bank C

January 21, 2025 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated January 21, 2025.

Exhibit 99.2

January 21, 2025 EX-99.1

Mercantile Bank Corporation Announces Robust Fourth Quarter and Full-Year 2024 Results Strong commercial loan and local deposit growth, notable increase in noninterest income, and ongoing strength in asset quality metrics highlight the year

Exhibit 99.1 Mercantile Bank Corporation Announces Robust Fourth Quarter and Full-Year 2024 Results Strong commercial loan and local deposit growth, notable increase in noninterest income, and ongoing strength in asset quality metrics highlight the year GRAND RAPIDS, Mich., January 21, 2025 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $19.6 million, or $1.22 p

January 21, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 21, 2025 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commi

December 19, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 19, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

December 19, 2024 EX-10.5

Amended and Restated Employment Agreement of Robert T. Worthington dated December 19, 2024, effective January 1, 2025

Exhibit 10.5 AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (“Agreement”) is made as of the 19th day of December, 2024, effective as of January 1, 2025, by and between Mercantile Bank, a Michigan banking corporation (the "Bank"), and Robert T. Worthington (the "Employee"). RECITALS A. Mercantile Bank Corporation (the “Company”), the Bank and the Employee h

December 19, 2024 EX-10.3

Amended and Restated Employment Agreement of Charles E. Christmas dated December 19, 2024, effective January 1, 2025

Exhibit 10.3 AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (“Agreement”) is made as of the 19th day of December, 2024, effective as of January 1, 2025, by and among Mercantile Bank Corporation, a Michigan corporation (the “Company”), Mercantile Bank, a Michigan banking corporation (the “Bank”, and collectively with the Company, the “Employers”), and Charl

December 19, 2024 EX-10.4

Amended and Restated Employment Agreement of Brett E. Hoover dated December 19, 2024, effective January 1, 2025

Exhibit 10.4 AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (“Agreement”) is made as of the 19th day of December, 2024, effective as of January 1, 2025, by and among Mercantile Bank Corporation, a Michigan corporation (the “Company”), Mercantile Bank, a Michigan banking corporation (the “Bank”, and collectively with the Company, the “Employers”), and Brett

December 19, 2024 EX-10.2

Amended and Restated Employment Agreement of Raymond E. Reitsma dated December 19, 2024, effective January 1, 2025

Exhibit 10.2 AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (“Agreement”) is made as of the 19th day of December, 2024, effective as of January 1, 2025, by and among Mercantile Bank Corporation, a Michigan corporation (the “Company”), Mercantile Bank, a Michigan banking corporation (the “Bank”, and collectively with the Company, the “Employers”), and Raymo

November 25, 2024 EX-10.2

Second Amendment to the Mercantile Bank Amended and Restated Deferred Compensation Plan

Exhibit 10.2 SECOND AMENDMENT TO THE MERCANTILE BANK AMENDED AND RESTATED DEFERRED COMPENSATION PLAN THIS AMENDMENT (the "Amendment") is adopted this 21st day of November 2024, by MERCANTILE BANK (the "Company"), a state-chartered commercial bank, and is effective as of January 1, 2025. WHEREAS, the Company sponsors and maintains the Mercantile Bank of Michigan Amended and Restated Deferred Compen

November 25, 2024 EX-10.3

Mercantile Bank Rabbi Directed Trust Agreement

Exhibit 10.3 Rabbi Directed Trust Agreement TRUST NAME: Nonqualified Deferred Compensation Plan #2 THIS TRUST AGREEMENT (“Agreement”) is made by and between Mercantile Bank (“Employer”) and Delaware Charter Guarantee & Trust Company, conducting business as Principal Trust Company (“Trustee”). WHEREAS, the Employer has adopted the Nonqualified Deferred Compensation Plan #2 (“Plan”) to provide benef

November 25, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): November 25, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

November 25, 2024 EX-10.1

2024 Mercantile Bank Nonqualified Deferred Compensation Plan #2

Exhibit 10.1 NOTE: Execution of this Adoption Agreement creates a legal liability of the Employer with significant tax consequences to the Employer and Participants. Principal Life Insurance Company disclaims all liability for the legal and tax consequences which result from the elections made by the Employer in this Adoption Agreement. Nothing set forth in this agreement or related documents may

November 12, 2024 SC 13G/A

MBWM / Mercantile Bank Corporation / VANGUARD GROUP INC Passive Investment

SC 13G/A 1 UnitedStates13GMercantile.txt 240.13d-102 Schedule 13G - Information to be included in statements filed pursuant to 240.13d-1(b), (c), and (d) and amendments thereto filed pursuant to 240.13d-2. Securities and Exchange Commission, Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* (Name of Issuer) Mercantile Bank Corp (Title of Class of Secu

November 4, 2024 SC 13G/A

MBWM / Mercantile Bank Corporation / VANGUARD GROUP INC Passive Investment

240.13d-102 Schedule 13G - Information to be included in statements filed pursuant to 240.13d-1(b), (c), and (d) and amendments thereto filed pursuant to 240.13d-2. Securities and Exchange Commission, Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. )* (Name of Issuer) Mercantile Bank Corp (Title of Class of Securities) Common Stock (CUSIP Number) 587376

November 1, 2024 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BAN

October 15, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 15, 2024 Mercantile Bank

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 15, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commi

October 15, 2024 EX-99.1

Mercantile Bank Corporation Announces Strong Third Quarter Results Robust local deposit and commercial loan growth and sustained strength in asset quality metrics highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Third Quarter Results Robust local deposit and commercial loan growth and sustained strength in asset quality metrics highlight quarter GRAND RAPIDS, Mich., October 15, 2024 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $19.6 million, or $1.22 per diluted share, for the third quarter of 2024, compared wi

October 15, 2024 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated October 15, 2024.

Exhibit 99.2

August 7, 2024 SC 13G/A

MBWM / Mercantile Bank Corporation / BlackRock Inc. Passive Investment

SC 13G/A 1 us5873761044080724.txt us5873761044080724.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 2) MERCANTILE BANK CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 587376104 - (CUSIP Number) July 31, 2024 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box t

August 2, 2024 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 O

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK COR

July 16, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 16, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commissi

July 16, 2024 EX-99.1

Mercantile Bank Corporation Announces Solid Second Quarter Results Strong local deposit and commercial loan growth and ongoing strength in asset quality metrics highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Solid Second Quarter Results Strong local deposit and commercial loan growth and ongoing strength in asset quality metrics highlight quarter GRAND RAPIDS, Mich., July 16, 2024 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $18.8 million, or $1.17 per diluted share, for the second quarter of 2024, compared with n

July 16, 2024 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated July 16, 2024.

Exhibit 99.2

July 11, 2024 EX-10.1

2024 Mercantile

Exhibit 10.1 MERCANTILE BANK CORPORATION/MERCANTILE BANK 2024 MERCANTILE EXECUTIVE OFFICER BONUS PLAN 1. Purpose of this Plan This 2024 Mercantile Executive Officer Bonus Plan (this “Plan”) is designed to reflect that the directors of Mercantile Bank Corporation (the “Company”) and Mercantile Bank (the “Bank”) believe that the Company’s shareholders are willing to share financially in operating re

July 11, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 11, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

June 26, 2024 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto Commission file number 000-26719 Mercantile Bank 401(k)

June 3, 2024 EX-99.1

Mercantile Bank Corporation Implements Management Succession Plan

Exhibit 99.1 Mercantile Bank Corporation Implements Management Succession Plan GRAND RAPIDS, Mich., June 3, 2024 – Mercantile Bank Corporation (NASDAQ: MBWM) implemented the following resignations and appointments, in furtherance of its previously announced management succession plan, effective as of June 1, 2024: Robert B. Kaminski, Jr. has retired as President and Chief Executive Officer (“CEO”)

June 3, 2024 EX-10.2

First Amendment to Amended and Restated Employment Agreement of Raymond E. Reitsma dated May 31, 2024

Exhibit 10.2 May 31, 2024 Mercantile Bank Corporation Mercantile Bank 310 Leonard St. NW Grand Rapids, Michigan 49504 Re: First Amendment to Employment Agreement dated November 29, 2018, effective December 31, 2018 Ladies and Gentlemen: This letter confirms our agreement regarding the Employment Agreement dated as of November 29, 2018, effective as of December 31, 2018 (the "Employment Agreement")

June 3, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 31, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

June 3, 2024 EX-10.4

First Amendment to Amended and Restated Employment Agreement of Scott P. Setlock dated May 31, 2024

Exhibit 10.4 May 31, 2024 Mercantile Bank Corporation Mercantile Bank 310 Leonard St. NW Grand Rapids, Michigan 49504 Re: First Amendment to Employment Agreement dated November 30, 2023, effective January 1, 2024 Ladies and Gentlemen: This letter confirms our agreement regarding the Employment Agreement dated as of November 30, 2023, effective as of January 1, 2024 (the "Employment Agreement"), by

June 3, 2024 EX-10.3

Amended and Restated Employment Agreement of Scott P. Setlock effective January 1, 2024

Exhibit 10.3 EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (“Agreement”) is made as of the 30th day of November, 2023, effective as of January 1, 2024, by and among Mercantile Bank Corporation, a Michigan corporation (the “Company”), Mercantile Bank, a Michigan banking corporation (the “Bank”, and collectively with the Company, the “Employers”), and Scott Setlock (the “Employ

May 23, 2024 EX-99.1

Mercantile Bank Corporation Shareholder Presentation dated May 23, 2024.

Exhibit 99.1

May 23, 2024 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 23, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 23, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 23, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commissio

May 3, 2024 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK CO

April 16, 2024 EX-99.1

Mercantile Bank Corporation Announces Robust First Quarter Results Strong local deposit growth, sustained strength in asset quality metrics and noteworthy increases in several noninterest revenue streams highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Robust First Quarter Results Strong local deposit growth, sustained strength in asset quality metrics and noteworthy increases in several noninterest revenue streams highlight quarter GRAND RAPIDS, Mich., April 16, 2024 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $21.6 million, or $1.34 per diluted share, for

April 16, 2024 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated April 16, 2024.

Exhibit 99.2

April 16, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 16, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commiss

April 8, 2024 ARS

ARS

2023 ANNUAL REPORT M ercMi§ ion Values To build strong relationships, accomplished through: Accountability, Collaboration, Excellence, Inclusivity, and Innovation.

April 4, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14

March 12, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 8, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

March 1, 2024 EX-19

Policy on Insider Trading

EXHIBIT 19 POLICY ON INSIDER TRADING This Insider Trading Policy (the "Policy") describes the standards of Mercantile Bank Corporation (the "Company") and its subsidiaries with regard to trading, and causing the trading of, the Company's securities or securities of certain other publicly-traded companies while in possession of confidential information.

March 1, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTI

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTI

March 1, 2024 EX-10.13

Form of Performance-Based Restricted Stock Award Agreement, in connection with the Mercantile Bank Corporation Stock Incentive Plan of 2023*

EXHIBIT 10.13 MERCANTILE BANK CORPORATION STOCK INCENTIVE PLAN OF 2023 PERFORMANCE-BASED RESTRICTED STOCK AWARD AGREEMENT NOTIFICATION OF AWARD AND TERMS AND CONDITIONS OF AWARD Name of Grantee: Grant Date: Number of Shares: (“Target Award”) Performance Period: January 1, 20 - December 31, 20 This Performance-Based Restricted Stock Award Agreement (the “Agreement”) contains the terms and condition

March 1, 2024 EX-14

Code of Ethics

EXHIBIT 14 CODE OF ETHICS I. OVERVIEW Mercantile Bank Corporation’s Code of Ethics (“Code”) sets forth the guiding principles by which we operate our company and conduct our daily business with our shareholders, customers, vendors and with each other. These principles apply to all of the directors, officers and employees of Mercantile Bank Corporation and all of its subsidiaries (referred to as th

March 1, 2024 EX-21

Subsidiaries of the company

EXHIBIT 21 SUBSIDIARIES OF MERCANTILE BANK CORPORATION Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Community Partners LLC, a Michigan limited liability company Wholly-owned subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each a Delaware business trust subsidiary of Mercantile Bank Corporation Mercantile Insurance Center, Inc.

March 1, 2024 EX-10.14

Director Fee Summary*

EXHIBIT 10.14 DIRECTOR FEE SUMMARY Set forth below is a summary of the director fee arrangements for non-employee directors serving on the Board of Directors of Mercantile Bank Corporation (“Mercantile”). Director compensation is based on a single retainer figure and meeting fees have been discontinued. The retainer fee is higher to each director who serves as Chairman of our Audit Committee, Comp

March 1, 2024 EX-97

Clawback Policy

EXHIBIT 97 Clawback Policy Introduction The Board of Directors (the "Board") of Mercantile Bank Corporation (the “Company”) believes that it is in the best interests of the Company, its shareholders, and its wholly owned subsidiary, Mercantile Bank (the “Bank”), to create and maintain a culture that emphasizes integrity and accountability.

February 9, 2024 SC 13G/A

MBWM / Mercantile Bank Corporation / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* Mercantile Bank Corp (Name of Issuer) Common Stock (Title of Class of Securities) 587376104 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box t

January 24, 2024 SC 13G/A

MBWM / Mercantile Bank Corporation / BlackRock Inc. Passive Investment

SC 13G/A 1 us5873761044012424.txt us5873761044012424.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) MERCANTILE BANK CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 587376104 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate b

January 16, 2024 EX-99.1

Mercantile Bank Corporation Announces Strong Fourth Quarter and Full-Year 2023 Results Significant increase in net interest income, robust loan growth, and ongoing strength in asset quality metrics highlight the year

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Fourth Quarter and Full-Year 2023 Results Significant increase in net interest income, robust loan growth, and ongoing strength in asset quality metrics highlight the year GRAND RAPIDS, Mich., January 16, 2024 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $20.0 million, or $1.25 per diluted share, for th

January 16, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 16, 2024 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commi

January 16, 2024 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated January 16, 2024.

Exhibit 99.2

November 3, 2023 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BAN

October 17, 2023 EX-99.1

Mercantile Bank Corporation Announces Retirement of President and Chief Executive Officer Robert B. Kaminski, Jr. Mr. Kaminski intends to retire in 2024, at which time Raymond E. Reitsma is expected to be appointed President and Chief Executive Offic

Exhibit 99.1 Mercantile Bank Corporation Announces Retirement of President and Chief Executive Officer Robert B. Kaminski, Jr. Mr. Kaminski intends to retire in 2024, at which time Raymond E. Reitsma is expected to be appointed President and Chief Executive Officer GRAND RAPIDS, Mich., October 17, 2023 – The Board of Directors of Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") announced

October 17, 2023 EX-99.1

Mercantile Bank Corporation Announces Robust Third Quarter 2023 Results Substantial year-over-year increase in net interest income, ongoing loan portfolio expansion, and sustained strength in asset quality metrics highlight quarter Mercantile Bank Co

Exhibit 99.1 Mercantile Bank Corporation Announces Robust Third Quarter 2023 Results Substantial year-over-year increase in net interest income, ongoing loan portfolio expansion, and sustained strength in asset quality metrics highlight quarter Mercantile Bank Corporation also announces newly appointed members to Corporate and Bank Boards of Directors GRAND RAPIDS, Mich., October 17, 2023 – Mercan

October 17, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 17, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

October 17, 2023 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 12, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

October 17, 2023 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated October 17, 2023

Exhibit 99.2

August 4, 2023 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 O

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK COR

July 18, 2023 EX-99.1

Mercantile Bank Corporation Announces Strong Second Quarter 2023 Results Significant year-over-year increase in net interest income, solid loan growth, and ongoing strength in asset quality metrics highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Second Quarter 2023 Results Significant year-over-year increase in net interest income, solid loan growth, and ongoing strength in asset quality metrics highlight quarter GRAND RAPIDS, Mich., July 18, 2023 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $20.4 million, or $1.27 per diluted share, for the se

July 18, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 18, 2023 Mercantile Bank Cor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 18, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

July 18, 2023 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated July 18, 2023.

Exhibit 99.2

June 23, 2023 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ☑ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto Commission file number 000-26719 Mercantile Bank of Mic

June 22, 2023 EX-10.1

2023 Mercantile Executive Officer Bonus Plan

Exhibit 10.1 MERCANTILE BANK CORPORATION/MERCANTILE BANK 2023 MERCANTILE EXECUTIVE OFFICER BONUS PLAN 1. Purpose of this Plan This 2023 Mercantile Executive Officer Bonus Plan (this “Plan”) is designed to reflect that the directors of Mercantile Bank Corporation (the “Company”) and Mercantile Bank (the “Bank”) believe that the Company’s shareholders are willing to share financially in operating re

June 22, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 22, 2023 Mercantile Bank Cor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 22, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

June 12, 2023 S-8

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Mercantile Bank Corporation (Exact name of registrant as specified in its charter)

Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 38-3360865 (State or other jurisdiction of of incorporation or organization) (I.R.S. Employer Identification No.) 310 Leonard Street NW, Grand Rapids

June 12, 2023 EX-FILING FEES

Calculation of Registration Fee

Exhibit 107 CALCULATION OF REGISTRATION FEE Form S-8 (Form Type) Mercantile Bank Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee Equity Common Stock Other 500,000 Shares $ 30.

June 12, 2023 EX-99

Mercantile Bank Corporation Stock Incentive Plan of 2023, incorporated by reference to exhibit 99 of our Form S-8 filed June 12, 2023*

Exhibit 99 MERCANTILE BANK CORPORATION STOCK INCENTIVE PLAN OF 2023 SECTION 1 Establishment of Plan; Purpose Of Plan 1.

May 25, 2023 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 25, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 25, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 25, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commissio

May 25, 2023 EX-99.1

Mercantile Bank Corporation Shareholder Presentation dated May 25, 2023.

Exhibit 99.1

May 5, 2023 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK CO

April 20, 2023 ARS

ARS

ANNUAL REPORT2 0 2 2 MISSION To deliver financial solutions that empower people to achieve their goals and dreams.

April 18, 2023 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated April 18, 2023.

Exhibit 99.2

April 18, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 18, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

April 18, 2023 EX-99.1

Mercantile Bank Corporation Announces Strong First Quarter Results Substantial increase in net interest income and sustained strength in asset quality metrics highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Strong First Quarter Results Substantial increase in net interest income and sustained strength in asset quality metrics highlight quarter GRAND RAPIDS, Mich., April 18, 2023 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $21.0 million, or $1.31 per diluted share, for the first quarter of 2023, compared with net

April 14, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14

April 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 23, 2023 Mercantile Bank Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 23, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

March 16, 2023 EX-16

Letter to Securities and Exchange Commission from BDO USA, LLP

Exhibit 16 Tel: 616-774-7000 Fax: 616-776-3680 www.bdo.com 200 Ottawa Ave NW, Suite 300 Grand Rapids, MI 49503 March 15, 2023 Securities and Exchange Commission 100 F Street N.E. Washington, D.C. 20549 We have been furnished with a copy of the response to Item 4.01 of Form 8-K for the event that occurred on March 14, 2023, to be filed by our former client, Mercantile Bank Corporation. We agree wit

March 16, 2023 8-K

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 14, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

March 3, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTI

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTI

March 3, 2023 EX-21

Subsidiaries of the company

EXHIBIT 21 SUBSIDIARIES OF MERCANTILE BANK CORPORATION Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each a Delaware business trust subsidiary of Mercantile Bank Corporation Mercantile Insurance Center, Inc.

March 3, 2023 EX-10.20

Director Fee Summary*

EXHIBIT 10.20 DIRECTOR FEE SUMMARY Set forth below is a summary of the director fee arrangements for non-employee directors serving on the Board of Directors of Mercantile Bank Corporation (“Mercantile”). Director compensation is based on a single retainer figure and meeting fees have been discontinued. The retainer fee is higher to each director who serves as Chairman of our Audit Committee, Comp

February 10, 2023 SC 13G/A

MBWM / Mercantile Bank Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Mercantile Bank Corp (Name of Issuer) Common Stock (Title of Class of Securities) 587376104 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

January 25, 2023 SC 13G

MBWM / Mercantile Bank Corp. / BlackRock Inc. Passive Investment

SC 13G 1 us5873761044012523.txt us5873761044012523.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) MERCANTILE BANK CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 587376104 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box

January 17, 2023 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated January 17, 2023.

EX-99.2 3 ex464004.htm EXHIBIT 99.2 Exhibit 99.2

January 17, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 17, 2023 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

January 17, 2023 EX-99.1

Mercantile Bank Corporation Announces Strong Fourth Quarter and Full-Year 2022 Results Substantial increase in net interest income, solid loan growth, and continuing strength in asset quality metrics highlight 2022

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Fourth Quarter and Full-Year 2022 Results Substantial increase in net interest income, solid loan growth, and continuing strength in asset quality metrics highlight 2022 GRAND RAPIDS, Mich., January 17, 2023 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $21.8 million, or $1.37 per diluted share, for the

November 18, 2022 EX-10.1

Amended and Restated Employment Agreement by and among Mercantile Bank Corporation, Mercantile Bank, and Brett Hoover

Exhibit 10.1 EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (?Agreement?) is made as of the 17th day of November, 2022, effective as of January 1, 2023, by and among Mercantile Bank Corporation, a Michigan corporation (the ?Company?), Mercantile Bank, a Michigan banking corporation (the ?Bank?, and collectively with the Company, the ?Employers?), and Brett Hoover (the ?Employe

November 18, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): November 17, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

November 4, 2022 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BAN

October 18, 2022 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated October 18, 2022.

Exhibit 99.2

October 18, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 18, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

October 18, 2022 EX-99.1

Mercantile Bank Corporation Announces Robust Third Quarter 2022 Results Significant increase in net interest income, solid loan growth, and ongoing strength in asset quality metrics highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Robust Third Quarter 2022 Results Significant increase in net interest income, solid loan growth, and ongoing strength in asset quality metrics highlight quarter GRAND RAPIDS, Mich., October 18, 2022 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $16.0 million, or $1.01 per diluted share, for the third quarter o

August 5, 2022 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 O

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK COR

July 19, 2022 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated July 19, 2022.

Exhibit 99.2

July 19, 2022 EX-99.1

Mercantile Bank Corporation Announces Strong Second Quarter 2022 Results Robust loan growth, continuing strength in asset quality metrics, and significant increases in several key fee income categories highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Second Quarter 2022 Results Robust loan growth, continuing strength in asset quality metrics, and significant increases in several key fee income categories highlight quarter GRAND RAPIDS, Mich., July 19, 2022 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $11.7 million, or $0.74 per diluted share, for th

July 19, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 19, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

July 18, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 14, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commissi

July 18, 2022 EX-10.1

2022 Mercantile Executive Officer Bonus Plan

Exhibit 10.1 MERCANTILE BANK CORPORATION/MERCANTILE BANK 2022 MERCANTILE EXECUTIVE OFFICER BONUS PLAN 1. Purpose of this Plan This 2022 Mercantile Executive Officer Bonus Plan (this ?Plan?) is designed to reflect that the directors of Mercantile Bank Corporation (the ?Company?) and Mercantile Bank (the ?Bank?) believe that the Company?s shareholders are willing to share financially in operating re

June 24, 2022 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 11-K ☑ ANNUAL REPORT Pursuant to Section 15 (d) of the Securities Exchange Act of 1934 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal

Table of Contents SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 11-K ☑ ANNUAL REPORT Pursuant to Section 15 (d) of the Securities Exchange Act of 1934 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 Commission File No. 000-26719 Mercantile Bank of Michigan 401(k) Plan Mercantile Bank Corporation (

May 27, 2022 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 26, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 26, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 26, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 26, 2022 EX-99.1

Mercantile Bank Corporation Shareholder Presentation dated May 26, 2022.

Exhibit 99.1

May 16, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 13, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 16, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A 1 mbwm20220516bdefa14a.htm FORM DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION

May 16, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 13, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 12, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A 1 mbwm20220511defa14a.htm FORM DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE OF THE COMMISSION

May 6, 2022 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK CO

April 19, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 19, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commiss

April 19, 2022 EX-99.1

Mercantile Bank Corporation Announces Solid First Quarter 2022 Results Strong core commercial loan growth, ongoing strength in asset quality metrics, and substantial increases in several key fee income categories highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Solid First Quarter 2022 Results Strong core commercial loan growth, ongoing strength in asset quality metrics, and substantial increases in several key fee income categories highlight quarter GRAND RAPIDS, Mich., April 19, 2022 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $11.5 million, or $0.73 per diluted s

April 19, 2022 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated April 19, 2022.

Exhibit 99.2

April 7, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEF 14A 1 mbwm20220329def14a.htm FORM DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ CONFIDENTIAL, FOR USE O

March 11, 2022 CORRESP

MERCANTILE BANK CORPORATION 310 Leonard St., N.W. Grand Rapids, Michigan 49504

CORRESP 1 filename1.htm MERCANTILE BANK CORPORATION 310 Leonard St., N.W. Grand Rapids, Michigan 49504 March 11, 2022 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: Mercantile Bank Corporation (the “Company”) Registration Statement on Form S-4/A File No. 333-262796 Ladies and Gentlemen: In accordance with Rule 461 under t

March 11, 2022 S-4/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 FORM S-4 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 MERCANTILE BANK CORPORATION (Exact name of registrant as specified in its charter)

S-4/A 1 mbwm20220310s4a.htm FORM S-4/A Table of Contents Registration No. 333-262796 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM S-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 MERCANTILE BANK CORPORATION (Exact name of registrant as specified in its charter) Michigan (State or other jurisdiction of incorporation or organization) 6022

March 9, 2022 S-4/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 FORM S-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 MERCANTILE BANK CORPORATION (Exact name of registrant as specified in its charter)

S-4/A 1 mbwm20220308s4a.htm Table of Contents Registration No. 333-262796 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM S-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 MERCANTILE BANK CORPORATION (Exact name of registrant as specified in its charter) Michigan (State or other jurisdiction of incorporation or organization) 6022 (Primary S

March 4, 2022 EX-10.19

Director Fee Summary*

EX-10.19 2 ex340634.htm EXHIBIT 10.19 EXHIBIT 10.19 DIRECTOR FEE SUMMARY Set forth below is a summary of the director fee arrangements for non-employee directors serving on the Board of Directors of Mercantile Bank Corporation (“Mercantile”). Director compensation is based on a single retainer figure and meeting fees have been discontinued. The retainer fee is higher to each director who serves as

March 4, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 4, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

March 4, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTI

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTI

March 4, 2022 EX-21

Subsidiaries of the company

EX-21 3 ex340635.htm EXHIBIT 21 EXHIBIT 21 SUBSIDIARIES OF MERCANTILE BANK CORPORATION Mercantile Bank, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each a Delaware business trust subsidiary of Mercantile B

February 23, 2022 LETTER

LETTER

United States securities and exchange commission logo February 23, 2022 Charles E.

February 16, 2022 S-4

Power of Attorney (included on original signature page to this registration statement).

Table of Contents Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 MERCANTILE BANK CORPORATION (Exact name of registrant as specified in its charter) Michigan (State or other jurisdiction of incorporation or organization) 6022 (Primary Standard Industrial Classification Code Number) 38-336

February 16, 2022 EX-25.1

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of Wilmington Trust, National Association, with respect to the Indenture, dated as of December 15, 2021, between Mercantile Bank Corporation and Wilmington Trust, National Association, as trustee, regarding 3.25% Fixed-to-Floating Rate Subordinated Notes due 2032.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 ? Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) WILMINGTON TRUST, NATIONAL ASSOCIATION (Exact name of trustee as specified in its charter) 16-1486454 (I.R.S. employer identification no.) 1100 North Market Street Wilmington, DE 19890-0001 (Address of principal

February 16, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fees Table Form S-4 (Form Type) Mercantile Bank Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit(1) Maximum Aggregate Offering Price(1) Fee Rate Amount of Registration Fee Newly Registered Fees to be Paid Debt 3.

February 16, 2022 EX-99.1

Form of Global Note Letter of Transmittal relating to the 3.25% Fixed-to-Floating Rate Subordinated Notes due 2032.

Exhibit 99.1 THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. If you are in any doubt as to the action to be taken, you should immediately consult your broker, bank manager, lawyer, accountant, investment advisor or other professional advisor. Mercantile Bank Corporation LETTER OF TRANSMITTAL For Tender of All Unregistered Outstanding 3.25% Fixed-to-Floating Rate Subordinated Note

February 16, 2022 EX-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

Exhibit 3.1 Michigan Department of Consumer and Industry Services Filing Endorsement This is to Certify that the ARTICLES OF INCORPORATION - PROFIT for MERCANTILE BANK CORPORATION ID NUMBER: 478801 received by facsimile transmission on July 15, 1997 is hereby endorsed Filed on July 15, 1997 by the Administrator. In testimony whereof, I have hereunto set my hand and affixed the Seal of the Departme

February 14, 2022 SC 13G/A

MBWM / Mercantile Bank Corp. / VISSER BRUCE - SC 13GA Passive Investment

SC 13G/A 1 schedule13ga.txt SC 13GA SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* Mercantile Bank Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 587376104 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the r

February 8, 2022 SC 13G/A

MBWM / Mercantile Bank Corp. / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* Mercantile Bank Corp (Name of Issuer) Common Stock (Title of Class of Securities) 587376104 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 1, 2022 SC 13G/A

MBWM / Mercantile Bank Corp. / BlackRock Inc. Passive Investment

us5873761044020122.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 5) MERCANTILE BANK CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 587376104 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

January 18, 2022 EX-99.1

Mercantile Bank Corporation Announces Strong Fourth Quarter and Full Year 2021 Results Robust core commercial loan growth, very strong operating performance and continued strength in asset quality metrics highlight 2021

Exhibit 99.1 Mercantile Bank Corporation Announces Strong Fourth Quarter and Full Year 2021 Results Robust core commercial loan growth, very strong operating performance and continued strength in asset quality metrics highlight 2021 GRAND RAPIDS, Mich., January 18, 2022 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $11.6 million, or $0.74 per diluted share, for

January 18, 2022 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated January 18, 2022.

Exhibit 99.2

January 18, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 18, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

January 14, 2022 EX-99.1

Mercantile Bank Corporation Raises Additional $15 Million of Subordinated Notes

Exhibit 99.1 Mercantile Bank Corporation Raises Additional $15 Million of Subordinated Notes GRAND RAPIDS, Mich., January 14, 2022 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile? or the "Company?) today announced that it has issued an additional $15 million of its 3.25% fixed-to-floating rate subordinated notes due 2032 (the ?Notes?) in a private placement. The offering is an expansion

January 14, 2022 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 14, 2022 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

December 30, 2021 EX-99.1

Mercantile Bank of Michigan Establishes The Mercantile Bank Foundation

Exhibit 99.1 Mercantile Bank of Michigan Establishes The Mercantile Bank Foundation GRAND RAPIDS, Mich., December 30, 2021 ? Mercantile Bank Corporation?s (NASDAQ: MBWM) subsidiary bank Mercantile Bank of Michigan (?Mercantile Bank?) announced today that it has formed The Mercantile Bank Foundation, a private charitable foundation to fund and administer Mercantile Bank?s charitable giving activiti

December 30, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 30, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Comm

December 17, 2021 EX-4.2

First Supplemental Indenture to Subordinated indenture, dated December 15, 2021, by and between Mercantile Bank Corporation and Wilmington Trust, National Association, as trustee, incorporated by reference to our Current Report on Form 8-K filed December 17, 2021

Exhibit 4.2 FIRST SUPPLEMENTAL INDENTURE between MERCANTILE BANK CORPORATION and WILMINGTON TRUST, NATIONAL ASSOCIATION DATED AS OF DECEMBER 15, 2021 First Supplemental Indenture to Subordinated Indenture dated as of December 15, 2021 3.25% Fixed-to-Floating Rate Subordinated Notes due January 30, 2032 Table of Contents Article One SCOPE OF SUPPLEMENTAL INDENTURE 1 Article Two DEFINITIONS 1 Sectio

December 17, 2021 EX-10.2

Form of Registration Rights Agreement dated December 15, 2021, by and among Mercantile Bank Corporation and the Purchasers, incorporated by reference to our Current Report on Form 8-K filed December 17, 2021

Exhibit 10.2 FORM OF REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (the ?Agreement?) is dated as of December 15, 2021 and is made by and among Mercantile Bank Corporation, a Michigan corporation (the ?Company?), and the several purchasers of the Subordinated Notes (as defined below) identified on the signature pages to the Purchase Agreement (as defined below) (collectively, the

December 17, 2021 EX-99.1

Mercantile Bank Corporation Closes Private Placement of $75 Million of Subordinated Notes

Exhibit 99.1 Final Draft Mercantile Bank Corporation Closes Private Placement of $75 Million of Subordinated Notes GRAND RAPIDS, Mich., December 15, 2021 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile? or the "Company?) today announced the pricing of its issuance, offer, and sale of $75 million aggregated principal amount of fixed-to-floating rate subordinated notes due 2031 (the ?Notes

December 17, 2021 EX-4.1

Subordinated indenture, dated December 15, 2021, by and between Mercantile Bank Corporation and Wilmington Trust, National Association, as trustee, incorporated by reference to our Current Report on Form 8-K filed December 17, 2021

Exhibit 4.1 MERCANTILE BANK CORPORATION As Issuer, and WILMINGTON TRUST, NATIONAL ASSOCIATION As Trustee SUBORDINATED INDENTURE Dated as of December 15, 2021 (Subordinated Debt Securities) Table of Contents ARTICLE I DEFINITIONS 1 Section 1.1 Definitions. 1 Section 1.2 Other Definitions. 4 Section 1.3 Incorporation by Reference of Trust Indenture Act. 5 Section 1.4 Rules of Construction. 5 ARTICLE

December 17, 2021 EX-99.2

Investor Presentation of Mercantile Bank Corporation.

Exhibit 99.2

December 17, 2021 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): December 15, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS E

December 17, 2021 EX-10.1

Form of Subordinated Note Purchase Agreement dated December 15, 2021, by and among Mercantile Bank Corporation and the Purchasers, incorporated by reference to our Current Report on Form 8-K filed December 17, 2021

Exhibit 10.1 SUBORDINATED NOTE PURCHASE AGREEMENT This SUBORDINATED NOTE PURCHASE AGREEMENT (this ?Agreement?) is dated as of December 15, 2021, and is made by and among Mercantile Bank Corporation, a Michigan corporation and registered financial holding company under the Bank Holding Company Act of 1956 (the ?Company?), and the several purchasers of the Subordinated Notes (as defined herein) iden

December 17, 2021 EX-4.3

Form of 3.25% Fixed-to-Floating Rate Subordinated Note due 2032, incorporated by reference to our Current Report on Form 8-K filed December 17, 2021

Exhibit 4.3 SUBORDINATED NOTE CERTIFICATE MERCANTILE BANK CORPORATION 3.25% FIXED-TO-FLOATING RATE SUBORDINATED NOTES DUE JANUARY 30, 2032 THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE ?SECURITIES ACT?), OR SECURITIES LAWS OF ANY STATE AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT (A) PURSUANT TO, AND IN

November 5, 2021 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BAN

October 19, 2021 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated October 19, 2021.

Exhibit 99.2

October 19, 2021 EX-99.1

Mercantile Bank Corporation Reports Strong Third Quarter 2021 Results Sustained strength in core commercial loan originations, asset quality metrics, and operating performance highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Reports Strong Third Quarter 2021 Results Sustained strength in core commercial loan originations, asset quality metrics, and operating performance highlight quarter GRAND RAPIDS, Mich., October 19, 2021 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $15.1 million, or $0.95 per diluted share, for the third quarter of 2021

October 19, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 19, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Em

August 6, 2021 10-Q

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 O

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK COR

July 20, 2021 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated July 20, 2021.

Exhibit 99.2

July 20, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 20, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction of incorporation) (Commissi

July 20, 2021 EX-99.1

Mercantile Bank Corporation Reports Strong Second Quarter 2021 Results Solid core commercial loan growth, sustained strength in mortgage banking income, and ongoing sound asset quality metrics highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Reports Strong Second Quarter 2021 Results Solid core commercial loan growth, sustained strength in mortgage banking income, and ongoing sound asset quality metrics highlight quarter GRAND RAPIDS, Mich., July 20, 2021 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $18.1 million, or $1.12 per diluted share, for the second

July 15, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 15, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Emplo

July 15, 2021 EX-10.1

2021 Mercantile Executive Officer Bonus Plan, incorporated by reference to exhibit 10.1 of our Form 8-K filed July 15, 2021*

Exhibit 10.1 MERCANTILE BANK CORPORATION/MERCANTILE BANK OF MICHIGAN 2021 MERCANTILE EXECUTIVE OFFICER BONUS PLAN 1. Purpose of this Plan This 2021 Mercantile Executive Officer Bonus Plan (this ?Plan?) is designed to reflect that the directors of Mercantile Bank Corporation (the ?Company?) and Mercantile Bank of Michigan (the ?Bank?) believe that the Company?s shareholders are willing to share fin

June 25, 2021 11-K

SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 11-K ☑ ANNUAL REPORT Pursuant to Section 15 (d) of the Securities Exchange Act of 1934 ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal

Table of Contents SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 11-K ? ANNUAL REPORT Pursuant to Section 15 (d) of the Securities Exchange Act of 1934 OR ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 Commission File No. 000-26719 Mercantile Bank of Michigan 401(k) Plan Mercantile Bank Corporation (

May 27, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 27, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 27, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 27, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 27, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 27, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Employ

May 27, 2021 EX-99.1

Mercantile Bank Corporation Announces Renewal of Stock Repurchase Program

Exhibit 99.1 Mercantile Bank Corporation Announces Renewal of Stock Repurchase Program GRAND RAPIDS, Mich., May 27, 2021 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") announced today that its Board of Directors has authorized the renewal of its stock repurchase program. Under this program, Mercantile may repurchase up to $20 million in aggregate value of its shares of Common Stock. ?

May 27, 2021 EX-99.1

Mercantile Bank Corporation Shareholder Presentation dated May 27, 2021.

Exhibit 99.1

May 7, 2021 10-Q

Quarterly Report - FORM 10-Q

Table of Contents U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File No. 000-26719 MERCANTILE BANK CO

April 20, 2021 EX-99.1

Mercantile Bank Corporation Announces Strong First Quarter 2021 Results Continued strength in mortgage banking income and asset quality metrics, along with solid core commercial loan growth, highlight quarter

Exhibit 99.1 Mercantile Bank Corporation Announces Strong First Quarter 2021 Results Continued strength in mortgage banking income and asset quality metrics, along with solid core commercial loan growth, highlight quarter GRAND RAPIDS, Mich., April 20, 2021 ? Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $14.2 million, or $0.87 per diluted share, for the first qu

April 20, 2021 EX-99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated April 20, 2021.

Exhibit 99.2

April 20, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 20, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

April 8, 2021 DEF 14A

- FORM DEF 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14

April 2, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 31, 2021 Mercantile Bank Corporation (Exact name of registrant as specified in its charter) Michigan 000-26719 38-3360865 (State or other jurisdiction (Commission File (IRS Empl

March 5, 2021 10-K

Annual Report - FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-26719 MERCANTI

March 5, 2021 EX-21

Subsidiaries of the company

EXHIBIT 21 SUBSIDIARIES OF MERCANTILE BANK CORPORATION Mercantile Bank of Michigan, a Michigan banking corporation Wholly-owned bank subsidiary of Mercantile Bank Corporation Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV Each a Delaware business trust subsidiary of Mercantile Bank Corporation Mercantile Insurance Center, Inc.

March 5, 2021 EX-10.17

Form of Performance-Based Restricted Stock Award Agreement, in connection with the Mercantile Bank Corporation Stock Incentive Plan of 2020, incorporated by reference to exhibit 10.17 of our Form 10-K for the year ended December 31, 2020*

EXHIBIT 10.17 MERCANTILE BANK CORPORATION STOCK INCENTIVE PLAN OF 2020 PERFORMANCE-BASED RESTRICTED STOCK AWARD AGREEMENT NOTIFICATION OF AWARD AND TERMS AND CONDITIONS OF AWARD (20) Name of Grantee: Grant Date: Number of Shares: (?Target Award?) Performance Period: January 1, 20 - December 31, 20 This Performance-Based Restricted Stock Award Agreement (the ?Agreement?) contains the terms and cond

March 5, 2021 EX-10.19

Director Fee Summary*

EXHIBIT 10.19 DIRECTOR FEE SUMMARY Set forth below is a summary of the director fee arrangements for non-employee directors serving on the Board of Directors of Mercantile Bank Corporation (?Mercantile?). Director compensation is based on a single retainer figure and meeting fees have been discontinued. The retainer fee is higher to each director who serves as Chairman of our Audit Committee, Comp

February 16, 2021 SC 13G/A

SCHEDULE 13GA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Mercantile Bank Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 587376104 (CUSIP Number) April 16, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this schedule* is

February 12, 2021 SC 13G/A

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* Mercantile Bank Corp (Name of Issuer) Common Stock (Title of Class of Securities) 587376104 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 11, 2021 SC 13G/A

SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* MERCANTILE BANK CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 587376104 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant t

January 29, 2021 SC 13G/A

SC 13G/A

us5873761044012921.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 4) MERCANTILE BANK CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 587376104 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

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