Company’s Net Income Climbs 20% to $26.7 Million; NIM Reaches 4.19% FAIRFAX, Va., Jan. 23, 2023 /PRNewswire/ — MainStreet Bancshares, Inc. (Nasdaq: MNSB & MNSBP), the holding company for MainStreet Bank, reported record net income of $26.7 million for 2022, a 20.3% increase from a year…