0000796534 2026-03-25 2026-03-25 false 0000796534 8-K 2026-03-25 National Bankshares, Inc. VA 0-15204 54-1375874 101 Hubbard Street Blacksburg VA 24060 540 951-6300 false false false false Common Stock, par value $1.25 per share NKSH NASDAQ false