UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ . Commission File Number: 0-19582 OLD DOMINION FREIGHT LINE, INC. (Exact name of registrant as specified in its charter) VIRGINIA 56-0751714 (State o ...

Financial Data and Key Metrics Changes - The company reported a record quarterly revenue of $1.1 billion, representing a 2.6% increase compared to the previous year [7][18] - Diluted earnings per share increased by 8.5% to $2.16, supported by an 80 basis point improvement in the operating ratio to 77.9% [7][18] - Cash flow from operations totaled $255.7 million for the second quarter, with capital expenditures of $159.2 million [25][26] Business Line Data and Key Metrics Changes - LTL revenue per hundredweight improved by 9.5%, while LTL tons per day decreased by 6.3% compared to the same quarter last year [18][19] - LTL shipments per day decreased by 2.6%, reflecting a softer freight environment [19] - Productivity metrics showed a 1.6% improvement in P&D shipments per hour and a 5.4% increase in dock shipments per hour [10] Market Data and Key Metrics Changes - The company experienced a 7% decrease in tons in June, following a 5.8% decrease in both April and May [49] - The tonnage trends have been below normal seasonality, with expectations for a slight recovery in August [50][69] Company Strategy and Development Direction - The company plans to continue significant investments in capacity, technology, and employee training, despite potential short-term increases in expenses [16] - The long-term strategic plan focuses on maintaining superior service and price discipline to capture market share [15][17] Management's Comments on Operating Environment and Future Outlook - Management noted mixed signals from the economy but remains confident in the ability to maintain market share and profitability [8][15] - The company anticipates continued softer demand but is prepared to respond to any potential acceleration in volumes [15][56] Other Important Information - The effective tax rate for the second quarter was 26.1%, consistent with the previous year [27] - The company returned $147.8 million to shareholders in the second quarter, including $164.7 million in share repurchases year-to-date [26] Q&A Session Summary Question: Update on pricing and competitive behavior - Management indicated that the pricing environment remains stable, with consistent increases in contractual renewals [30] Question: Resource adjustments due to softer demand - Management confirmed necessary labor adjustments have been made to align with tonnage levels, resulting in improved productivity [32] Question: Tonnage outlook and macroeconomic conditions - Management expressed that tonnage is expected to remain soft, but there is hope for improvement as macroeconomic conditions stabilize [56] Question: Impact of tariffs on customer volumes - Management acknowledged that tariffs have been a topic of discussion but noted that overall retail business performance remains strong [80] Question: Capacity additions and their impact on operating ratio - Management stated that while capacity additions may impact depreciation costs, they are critical for long-term growth and market share [87][114]

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ . Commission File Number: 0-19582 OLD DOMINION FREIGHT LINE, INC. (Exact name of registrant as specified in its charter) | VIRGINIA | 56-0751714 | | ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ____________ to ____________. Commission File Number: 0-19582 OLD DOMINION FREIGHT LINE, INC. (Exact name of registrant as specified in its charter) VIRGINIA 56-0751714 (Stat ...

Financial Data and Key Metrics Changes - The company reported significant growth in revenue and operating income for Q4 2018, with revenue increasing to $1.01 billion, a rise of 20.5% year-over-year [2] - Operating income for the quarter was $174.5 million, reflecting a 24.2% increase compared to the same period last year [2] Business Line Data and Key Metrics Changes - The LTL (Less-than-Truckload) segment showed strong performance, contributing to the overall revenue growth, with an increase in shipments and revenue per shipment [2] - The company continued to invest in its infrastructure and technology to enhance operational efficiency and service quality [2] Market Data and Key Metrics Changes - The overall freight market remained competitive, with demand for LTL services increasing, which positively impacted the company's performance [2] - The company noted a favorable pricing environment, allowing for improved margins despite rising costs [2] Company Strategy and Development Direction - The company emphasized its commitment to expanding its service network and enhancing customer service capabilities as part of its long-term growth strategy [2] - Management highlighted the importance of technology investments to improve operational efficiency and customer experience [2] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about the future, citing strong demand in the freight market and the company's ability to adapt to changing market conditions [2] - The company acknowledged potential challenges, including rising costs and competitive pressures, but remained confident in its strategic initiatives to drive growth [2] Other Important Information - The company reiterated its focus on maintaining a strong balance sheet and disciplined capital allocation to support growth initiatives [2] - Management indicated that they would continue to monitor economic indicators and adjust strategies accordingly [2] Q&A Session Summary Question: What are the expectations for revenue growth in 2019? - Management indicated that they expect continued revenue growth driven by strong demand in the LTL market and effective pricing strategies [2] Question: How is the company addressing rising operational costs? - The company is focusing on operational efficiencies and technology investments to mitigate the impact of rising costs on margins [2] Question: What are the key areas of investment for the company moving forward? - Management highlighted investments in infrastructure, technology, and workforce development as key areas to support future growth [2]