Heartland Express, Inc. is a holding company, which engages in the provision of short-to-medium haul truckload carrier services. The company is headquartered in North Liberty, Iowa and currently employs 4,710 full-time employees. The Company, through its subsidiaries, is engaged in short, medium, and long-haul truckload carrier and transportation services. The firm provides truckload services across the United States, Mexico, and parts of Canada. These truckload services are primarily asset-based transportation services in the dry van truckload market, and it also offer truckload temperature-controlled transportation services and Mexico logistics services. Its primary customers include retailers, manufacturers and parcel carriers. Its over-the-road tractors are equipped with mobile communication systems. The company operates approximately 33 terminal facilities throughout the United States and one in Mexico. The Company’s subsidiaries include Heartland Express, Inc. of Iowa, Heartland Express Services, Inc., Heartland Express Maintenance Services, Inc., Midwest Holding Group, LLC, Millis Transfer, LLC, Smith Transport, Inc., Smith Trucking, Inc. and others.