Marten Transport is a temperature-sensitive truckload carrier focused on hauling food and consumer packaged goods that require refrigeration or insulation across the U.S. About 59% of Truckload and Dedicated revenue comes from temperature-sensitive freight, with the remaining 41% from dry freight. Marten operates regional services across the Southeast, West Coast, Midwest, South Central, and Northeast, with its primary lanes connecting the Midwest to the coasts. Walmart is Marten's largest customer, and the top 10 customers account for roughly half of revenue. Marten targets shippers with consistent, high-volume freight and aims to become a "core carrier" for key accounts rather than competing on the spot market. Marten operates through three segments: Truckload (core regional hauling), Dedicated (multi-year contracts tied to specific customer needs, providing more stable revenue), and Brokerage (asset-light, arranging freight through third-party carriers via its Marten Transport Logistics subsidiary). Marten earns revenue primarily on a per-mile rate plus fuel surcharges, with profitability driven by loaded miles, rate per mile, and fleet utilization. Key costs include driver wages, diesel fuel, and equipment — Marten runs a young fleet (average tractor age of ~2.3 years) to minimize repairs and attract drivers. The company owns most of its tractors, with independent contractors supplying a small fraction. Marten grows organically by expanding within existing customer relationships and winning new shippers that fit its network.