Mercantile Bank Corporation filings document the regulatory record of a Michigan bank holding company and its bank subsidiaries. The company’s 8-K reports furnish earnings releases and Regulation FD presentation materials covering operating results, financial condition, net interest income, funding trends, asset quality, capital measures and fee-based banking activities.
Its SEC record also includes proxy disclosures on board matters, executive compensation and equity awards, along with material-event filings for governance actions such as executive officer bonus plans. Additional filing categories address material agreements, shareholder voting matters and capital-structure disclosure relevant to Mercantile’s common stock and bank holding company operations.
Mercantile Bank Corp executive Tara M. Randall reported several stock transactions. On 12/19/2025, she disposed of 1,500 shares of common stock at $49.45 per share, leaving 13,848 shares directly owned. On 02/05/2026, she acquired 1,820 shares at $0 under a performance-based restricted stock award that may be forfeited if certain metrics are not met, plus an additional 910 shares at $0. Following these transactions, she directly owns 16,578 common shares, including shares accumulated through dividend reinvestment.
Mercantile Bank Corp executive Mark S. Augustyn reported several changes in his common stock holdings. On 02/05/2026 he acquired 2,875 shares of common stock at $0 per share as a performance-based restricted stock award, which may be forfeited if specified performance metrics are not met, and separately acquired 1,437 additional shares at $0 per share. Earlier, on 12/19/2025 he disposed of 1,461 shares at $49.45 per share, and on 12/12/2025 he disposed of 2,022 shares at $0 per share. Following these transactions, he directly holds 32,499 common shares, with an additional 258 shares held indirectly in an IRA and 268 shares held indirectly by his spouse in an IRA.
Dimensional Fund Advisors LP has reported a sizable institutional position in Mercantile Bank Corp. As of the event date of 12/31/2025, Dimensional is deemed to beneficially own 1,031,485 shares of Mercantile Bank Corp common stock, representing 6.0% of the outstanding class.
The firm has sole voting power over 1,014,369 shares and sole dispositive power over 1,031,485 shares. These shares are actually owned by various funds and accounts it advises or manages, and Dimensional disclaims beneficial ownership beyond what is required for Section 13(d) reporting.
Dimensional classifies itself as an investment adviser and states that the securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Mercantile Bank Corp.
Mercantile Bank Corporation amended its previously furnished fourth quarter 2025 earnings materials to correct certain performance metrics in an investor presentation. The revised presentation updates 2026 figures for overhead costs in the first through fourth quarters and fee income in the third and fourth quarters on slide 26. All other information from the original fourth quarter and full-year 2025 materials remains unchanged. The updated Conference Call & Webcast Presentation is being used for the Fourth Quarter 2025 conference call and future investor and stakeholder presentations and is available as an exhibit and on the company’s investor relations website.
Mercantile Bank Corporation filed a current report describing its latest financial communications. The company issued a press release announcing earnings and other financial results for the quarter and year ended December 31, 2025, and furnished this release as Exhibit 99.1.
Management also prepared a Conference Call & Webcast Presentation for use during its previously announced fourth quarter 2025 conference call on January 20, 2026 at 10:00 a.m. Eastern Time and in future investor and stakeholder presentations. This presentation is furnished as Exhibit 99.2 and is also available on the company’s investor relations website.
Mercantile Bank Corporation director Steven Schweihofer reported acquiring 321 shares of the company’s common stock on 01/06/2026. The shares were acquired at a price of $0 per share, increasing his directly held stake to 5,603 common shares following the transaction. The filing was made as a Form 4 for a single reporting person with direct ownership.
Mercantile Bank Corporation reported that it and Eastern Michigan Financial Corporation have received all required regulatory approvals for their planned merger. Eastern will first merge into a Mercantile acquisition subsidiary, which will then merge into Mercantile, leaving Mercantile as the surviving company.
After the transaction, Mercantile will temporarily operate as a two‑bank holding company, with Eastern Michigan Bank running alongside Mercantile Bank. Mercantile currently plans to consolidate Eastern Michigan Bank into Mercantile Bank in the first quarter of 2027. Completion of the merger is targeted for December 31, 2025, but still depends on approval by Eastern’s shareholders and satisfaction of the remaining closing conditions.
Mercantile Bank Corp (MBWM) director reported selling common stock in two open-market transactions. On 11/13/2025, the reporting person sold 3,160 shares of common stock at a price of $45.85 per share and 1,417 shares at $45.81 per share. After these sales, the director beneficially owned 11,898 shares directly, 14,616 shares indirectly through an IRA, and 19,909 shares in a 401(k) plan. The filing notes that the indirect holdings include shares acquired by reinvesting cash dividends under the company’s dividend reinvestment plan.
Mercantile Bank Corporation (MBWM) and Eastern Michigan Financial (EFIN) announced a definitive merger under which each EFIN share will be exchanged for $32.32 in cash plus 0.7116 MBWM shares, with cash paid in lieu of fractional shares. The stock portion’s value will vary with MBWM’s price. On July 21, 2025, the package equated to about $67.01 per EFIN share and roughly $95.8 million in aggregate consideration; on October 16, 2025 it equated to about $63.02 per share and $90.3 million, both inclusive of option conversions.
EFIN will hold a special shareholder meeting on December 19, 2025 to vote; approval requires a majority of outstanding shares. No dissenters’ rights apply under Michigan law. After closing, former EFIN holders are expected to own about 5.4% of the combined company. The exchange ratio is fixed but EFIN may terminate if MBWM’s 10‑day VWAP falls below $40.54 and underperforms the Nasdaq Bank Index by more than 17.5%, unless MBWM increases the ratio per the agreement. The merger is intended to be a tax‑free reorganization for the stock portion; cash received is taxable. A termination fee of $3.68 million may apply in specified circumstances.
Mercantile Bank Corp (MBWM) reported an insider transaction by a director. On 10/31/2025, the director purchased 1,000 shares of common stock at $43.5, recorded as indirect ownership through an IRA.
Following the transaction, reported holdings were 3,502 shares indirect (IRA) and 3,084 shares direct. The filing was submitted by one reporting person.