---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-012888"
form_type: "8-K"
ticker: "MBWM"
cik: "0001042729"
company_name: "MERCANTILE BANK CORP"
filed_at: "2026-04-21T23:59:59+00:00"
generated_at: "2026-05-15T05:02:47.206358+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Mercantile Bank Q1 net income $22.7M ($1.32 diluted); adjusted EPS $1.46, revenue up 18% YoY

## Summary
- GAAP net income $22.7M ($1.32 diluted) vs $19.5M ($1.21) a year ago; adjusted net income $25.2M ($1.46).
- Net revenue $67.6M (+18.1% YoY); net interest margin 3.55% vs 3.47%.
- Negative provision for credit losses $1.8M vs positive $2.1M last year.
- Loan-to-deposit ratio 89% vs 91% at Dec 2025 and 99% at Mar 2025; local deposits grew 14.6% annualized.
- Tangible book value $37.34/share, up $0.56 from Dec 2025; asset quality remains low NPAs at 0.1% of assets.

## SEC filing metadata
- accession: 0001437749-26-012888
- form_type: 8-K
- ticker: MBWM
- cik: 0001042729
- company_name: MERCANTILE BANK CORP
- filed_at: 2026-04-21T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1042729/000143774926012888/0001437749-26-012888-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1042729/000143774926012888/mbwm20260306_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-012888
- JSON: https://secwatch.observer/filing/0001437749-26-012888.json
- Plain text: https://secwatch.observer/filing/0001437749-26-012888.txt

## Key facts
- Earnings Releases
  MERCANTILE BANK CORP reported the first quarter of 2026 results: revenue $67.6 million, net income $22.7 million, EPS $1.32 per diluted share.
  - Period: the first quarter of 2026
  - Revenue: $67.6 million
  - Net income: $22.7 million
  - EPS: $1.32 per diluted share
  - Result: reported results
  source text: robust local deposit growth ● Strong tangible and regulatory capital positions Operating Results Net revenue, consisting of net interest income and noninterest income, was $67.6 million during the first quarter of 2026, up $10.3 million, or 18.1 percent, from $57.3 million during the prior-year first quarter. Net interest income during the first three months of
  evidence_url: https://www.sec.gov/Archives/edgar/data/1042729/000143774926012888/0001437749-26-012888-index.htm

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