---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-031227"
form_type: "8-K"
ticker: "MBWM"
cik: "0001042729"
company_name: "MERCANTILE BANK CORP"
filed_at: "2026-09-25T20:15:49+00:00"
generated_at: "2026-10-12T13:23:11.786080+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Mercantile Bank approves $3M bonus pool tied to Eastern Michigan Bank merger, Jack Henry conversion

## Summary
- Board approved the 2026-2027 Merger Integration and Core Conversion Bonus Plan on Sept. 24, 2026, creating a $3,000,000 aggregate cash bonus pool.
- Pool rewards employees, including executive officers, for integrating the Eastern Michigan Bank merger and converting Mercantile's core and digital banking systems to the Jack Henry platform.
- Compensation Committee has sole discretion over participants and award amounts; no minimum award is guaranteed and none, part or all of the pool may be granted.
- Earned awards pay on or before March 31, 2027; recipients must be active employees (medical leave excepted), while suspended or final-written-warning employees are ineligible.
- Awards are subject to recovery under the company's Oct. 2, 2023 Dodd-Frank/Nasdaq Rule 5608 clawback policy; the plan is effective immediately and governed by Michigan law.

## SEC filing metadata
- accession: 0001437749-26-031227
- form_type: 8-K
- ticker: MBWM
- cik: 0001042729
- company_name: MERCANTILE BANK CORP
- filed_at: 2026-09-25T20:15:49+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1042729/000143774926031227/0001437749-26-031227-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1042729/000143774926031227/mbwm20260921_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-031227
- JSON: https://secwatch.observer/filing/0001437749-26-031227.json
- Plain text: https://secwatch.observer/filing/0001437749-26-031227.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.