Exhibit 99.1 First National Corporation Reports First Quarter Financial Results STRASBURG, Va., April 30, 2024 --- First National Corporation (the “Company” or “First National”) (NASDAQ: FXNC), the bank holding company of First Bank (the “Bank”), reported unaudited consolidated net income of $3.2 million and diluted earnings per common share of $0.51 for the three months ended March 31, 2024. FIRST QUARTER HIGHLIGHTS Key highlights of the three months ended March 31, 2024 are as follows. Comparisons are to ...