X0508 4 2025-10-01 0001693577 MainStreet Bancshares, Inc. MNSB 0002013171 Manouchehri Ali R 10089 FAIRFAX BLVD FAIRFAX VA 22030 1 Director - MainStreet Bank 0 Common Stock 2025-10-01 4 A 0 577 20.83 A 7810 D Depositary Shares 500 D In lieu of cash fees, directors may elect to receive an equivalent value of equity in restricted stock awards under the existing equity incentive plan. This amount reflects the fair value of restricted stock awards received in lieu of cash based upon the stock price on the date of grant. /s/ Richard A. Vari, attorney-in-fact 2025-10-01