0000878927 2026-09-22 2026-09-22 0000878927 false 8-K 2026-09-22 OLD DOMINION FREIGHT LINE, INC. VA 0-19582 56-0751714 500 Old Dominion Way Thomasville NC 27360 (336) 889-5000 Not Applicable false false false false Common Stock ($0.10 par value) ODFL NASDAQ false