Material Event (Form 8-K)

Item 8.01 Other Events.

On March 3, 2026, MainStreet Bancshares, Inc. (the "Company") the holding company for MainStreet Bank, announced that since the beginning of the year, the Company has repurchased 174,280 shares of outstanding common stock at an average price of $22.45 per share under its current stock repurchase program. The shares were repurchased in accordance with the limitations set forth in Rule 10b-18 of the Securities and Exchange Commission and other applicable legal requirements. As of December 31, 2025, our tangible book value was $25.52. The share repurchase program does not obligate the Company to repurchase any dollar amount or number of shares, and the program may be extended, suspended, or discontinued at any time.