Stephen J. Hawrysz

The company provides software and management services to aid sales teams in their interactions with customers and each other. Participate Systems' technology provides access to the experience and practices of other sales professionals and can be integrated into automation tools, portals, or other platforms. Among its clients are Microsoft, IBM, and SAP. Participate.com was founded as Extranet Solutions by former CEO Alan Warms in 1997, and changed its name in 1999 and again in 2002 to the current name. The company's owners include Warms, Interwest Partners, Seaport Capital, TL Ventures, and Participate employees

Wisconsin Central Ltd. operates regional railroads. The company is headquartered in Homewood, IL.

Arthur Andersen LLP used to provide accounting services. It was also into consulting services for clients that operate businesses throughout the United States and around the world. Arthur Andersen was founded in 1913 and was headquartered in Chicago, IL.

Eagle Test Systems, Inc. designs, manufactures and distributes test systems for the analog, mixed signal and wireless semiconductor markets. The company was founded in 1970 and is headquartered in Mundelein, IL.