---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-031750"
form_type: "8-K"
ticker: "MNSB"
cik: "0001693577"
company_name: "MainStreet Bancshares, Inc."
filed_at: "2025-10-27T23:59:59+00:00"
generated_at: "2026-05-17T02:11:46.582478+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# MainStreet Bancshares beats Q3 expectations, initiates $10M buyback

## Summary
- Q3 2025 net income $4.52M, EPS $0.52, beating consensus of $4.48M and $0.51.
- Core net interest margin of 3.54%; balance sheet structured for rate changes.
- Board authorized $10M common stock repurchase program, replacing 2022 program.
- Management notes strong asset quality and continued lending opportunities.

## SEC filing metadata
- accession: 0001437749-25-031750
- form_type: 8-K
- ticker: MNSB
- cik: 0001693577
- company_name: MainStreet Bancshares, Inc.
- filed_at: 2025-10-27T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1693577/000143774925031750/0001437749-25-031750-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1693577/000143774925031750/main20250814_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-031750
- JSON: https://secwatch.observer/filing/0001437749-25-031750.json
- Plain text: https://secwatch.observer/filing/0001437749-25-031750.txt

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