SCHEDULE: Fourthstone LLC Discloses 5.22% Stake in MainStreet

Investment adviser Fourthstone LLC and affiliated entities have reported a 5.22% beneficial ownership stake in MainStreet Bancshares, Inc.

Summary

• Fourthstone LLC and its affiliates have filed a Schedule 13G reporting beneficial ownership of 384,802 shares of MainStreet Bancshares, Inc. common stock.
• This holding represents 5.22% of the issuer's total outstanding common stock, based on 7,366,049 shares outstanding as of March 6, 2026.
• The reporting group includes Fourthstone LLC, Fourthstone Master Opportunity Fund Ltd., Fourthstone GP LLC, Fourthstone QP Opportunity Fund LP, Fourthstone Small-Cap Financials Fund LP, and L. Phillip Stone, IV.
• The shares are held in the ordinary course of business for investment purposes, with no intent to influence or change control of the issuer.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral regulatory disclosure reflecting standard portfolio management activity rather than a strategic shift or performance-related event.

Positives

• The filing indicates institutional interest in MainStreet Bancshares, Inc. from an investment adviser specializing in financial sector equities.

Negatives

• None identified; this is a standard regulatory disclosure of beneficial ownership.

Risks

• The investment is subject to market volatility and the general performance of the banking sector.

Future Outlook

The reporting persons state that the securities were acquired in the ordinary course of business and are not held for the purpose of changing or influencing the control of the issuer.

Industry Context

StockSavvy.ai notes that Schedule 13G filings are standard disclosures for institutional investors crossing the 5% ownership threshold. This activity is typical for investment advisers managing small-cap financial portfolios and does not signal a change in corporate strategy or activist intervention.

Comparison to Industry Standards

• The filing adheres to standard SEC regulatory requirements for institutional investment managers.
• The disclosure format is consistent with typical 13G filings for passive investment positions in regional banking institutions.

Stakeholder Impact

• Shareholders may view the accumulation of a 5% stake by an institutional investor as a sign of confidence in the company's long-term value.

Next Steps

• The reporting persons will continue to monitor their investment in the ordinary course of business.

Key Dates

Keywords

MainStreet Bancshares, Fourthstone LLC, Schedule 13G, Beneficial Ownership, Institutional Investor, Banking Sector