SP Plus Corp. engages in the development and integration of technology for mobility solutions. The firm operates through the Commercial and Aviation segments. The Commercial segment includes the provision of services in healthcare facilities, municipalities, meter revenue collection and enforcement, government facilities, hotels, commercial real estate, residential communities, retail, colleges and universities, and ancillary services. The Aviation segment involves the solutions in aviation, ancillary, shuttle and ground transportation, valet services, baggage handling, repair and replacement, remote air check-in, wheelchair assist and other services. The company was founded in 1929 and is headquartered in Chicago, IL.