---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-032974"
form_type: "8-K"
ticker: "MBWM"
cik: "0001042729"
company_name: "MERCANTILE BANK CORP"
filed_at: "2026-10-20T13:00:18+00:00"
generated_at: "2026-10-20T13:01:17.744500+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Mercantile Q3 net income rises to $24.1M but diluted EPS falls to $1.39 from $1.46

## Summary
- Net income $24.1M, or $1.39 per diluted share, vs $23.8M/$1.46 a year ago; adjusted EPS $1.42 vs $1.50. Nine-month adjusted EPS $4.41, up 7.8% YoY.
- Net revenue $73.2M, up 17.3%; net interest income $60.9M (+17.1%); NIM 3.73% vs 3.49%; noninterest income $12.3M (+18.4%) on ~28% higher treasury management fees.
- Noninterest expense $43.6M vs $34.8M, including $4.1M from Eastern Michigan Bank; Q3 conversion costs $0.4M, acquisition costs $0.2M; provision $0.7M vs $0.2M.
- Deposits $5.61B; local deposits up $438M (11.4% annualized) in first nine months, brokered deposits down $110M to $20.1M; loan-to-deposit ratio 88.3% vs 91.2% at year-end 2025.
- NPAs $9.8M (0.1% of assets); net recoveries $0.3M; tangible book value $37.81/share, up nearly 4% annualized; Mercantile Bank risk-based capital 13.4%; system conversion set for Q1 2027.

## SEC filing metadata
- accession: 0001437749-26-032974
- form_type: 8-K
- ticker: MBWM
- cik: 0001042729
- company_name: MERCANTILE BANK CORP
- filed_at: 2026-10-20T13:00:18+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1042729/000143774926032974/0001437749-26-032974-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1042729/000143774926032974/mbwm20260827_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-032974
- JSON: https://secwatch.observer/filing/0001437749-26-032974.json
- Plain text: https://secwatch.observer/filing/0001437749-26-032974.txt

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