Old Dominion Freight Line(ODFL) - 2021 Q1 - Quarterly Report

FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED STATES SECURITIES AND EXCHANGE COMMISSION For the quarterly period ended March 31, 2021 For the transition period from ________ to ________ . Washington, D.C. 20549 or Commission File Number: 0-19582 OLD DOMINION FREIGHT LINE, INC. (Exact name of registrant as specified in its charter) VIRGINIA 56-0751714 (State ...