---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-039072"
form_type: "8-K"
ticker: "MBWM"
cik: "0001042729"
company_name: "MERCANTILE BANK CORP"
filed_at: "2025-12-31T23:59:59+00:00"
generated_at: "2026-05-16T11:52:40.829579+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Mercantile Bank closes merger with Eastern Michigan Financial for $32.32/share + 0.7116 shares

## Summary
- Merger completed Dec 31, 2025; Eastern shareholders get $32.32 + 0.7116 MBWM shares per share.
- Entered $30M term loan with U.S. Bank to fund purchase price and expenses; matures Dec 24, 2028.
- Steve Schweihofer appointed to board, increasing size to 12, effective Dec 31, 2025.
- Eastern Michigan Bank to operate separately until Q1 2027, then consolidate into Mercantile Bank.
- Credit agreement includes financial covenants: NPAs/OREO to tangible capital ≤12%, ROAA ≥0.80%.

## SEC filing metadata
- accession: 0001437749-25-039072
- form_type: 8-K
- ticker: MBWM
- cik: 0001042729
- company_name: MERCANTILE BANK CORP
- filed_at: 2025-12-31T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 2.03, 3.03, 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1042729/000143774925039072/0001437749-25-039072-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1042729/000143774925039072/mbwm20251231_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-039072
- JSON: https://secwatch.observer/filing/0001437749-25-039072.json
- Plain text: https://secwatch.observer/filing/0001437749-25-039072.txt

## Key facts
- Debt Financings
  MERCANTILE BANK CORP incurred term loan of $30.0 million with U.S. Bank National Association at 1.70% plus the greater of (a) zero percent (0.0%) and (b) the one-month forward- maturing December 24, 2028.
  - Instrument: term loan
  - Principal: $30.0 million
  - Counterparty: U.S. Bank National Association
  - Rate: 1.70% plus the greater of (a) zero percent (0.0%) and (b) the one-month forward-
  - Maturity: December 24, 2028
  - Event: incurrence
  source text: On December 24, 2025, Mercantile Bank Corporation, a Michigan corporation (“Mercantile”) entered into a Credit Agreement (the “Credit Agreement”) with U.S. Bank National Association, a national banking association. The Credit Agreement is for a $30.0 million term loan to fund the purchase price and related expenses of the Merger (defined below) and for working capital purposes. The term loan bears interest at an annual rate equal to 1.70% plus the greater of (a) zero percent (0.0%) and (b) the one-month forward-looking term rate based on SOFR. Interest and principal are payable beginning March 15, 2026, and on the same date of each third month thereafter, plus a final payment equal to all unpaid interest and principal. Principal shall be paid in installments of $2.5 million each. The term loan matures on December 24, 2028.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1042729/000143774925039072/0001437749-25-039072-index.htm
- Material Agreements
  MERCANTILE BANK CORP entered into Credit Agreement with U.S. Bank National Association valued at $30.0 million (effective 2025-12-24).
  - Action: entry
  - Agreement: credit facility
  - Counterparty: U.S. Bank National Association
  - Value: $30.0 million
  - Effective: 2025-12-24
  source text: On December 24, 2025, Mercantile Bank Corporation, a Michigan corporation (“Mercantile”) entered into a Credit Agreement (the “Credit Agreement”) with U.S. Bank National Association, a national banking association. The Credit Agreement is for a $30.0 million term loan to fund the purchase price and related expenses of the Merger (defined below) and for working capital purposes.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1042729/000143774925039072/0001437749-25-039072-index.htm

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