Alex S. Fisher

Madison Dearborn Partners LLC (Madison Dearborn Partners) is a private equity firm founded in 1992 by John A. Canning Jr., Paul J. Finnegan, Samuel M. Mencoff, Robin P. Selati, James N. Perry Jr. and Timothy P. Sullivan. The firm is headquartered in Chicago, Illinois.

Lightspeed Systems, Inc. develops network security and management solutions. It offers integrated solution for mobile management, safety, and collaborative learning. The firm's services include solutions include network security, internet filtering, monitoring, management, and optimization. The company was founded by Robert E. McCarthy III in 2000 and is headquartered in Austin, TX.

Carnegie Learning, Inc. provides transformational mathematics education products and services. It offers research-proven mathematics software, textbooks, professional learning, and data analysis services for middle, high school, and college students. The company was founded by Kenneth R. Koedinger, John Anderson, Albert Corbett, William Hadley, and Steven Ritter and is headquartered in Pittsburgh, PA.

Unison Software, Inc. provides consulting, software, engineering and program management services. The firm offers software solutions for federal, defense, and intelligence agencies, and contractor organizations with the visibility, control and transparency and government agencies and contractors. Its products include TopVue, PRISM and Spectrum Suites, CDRL, PM, RISK, CMvues, FedConnect, Acquisition Management Module, and Spectrum CLM. The company was founded in 1983 and is headquartered in Dulles, VA.

Complete Innovations, Inc. provides mission critical fleet, asset and mobile workforce management solutions. Its products include fleet tracker, asset tracker, electronic logging device, task tracker and dispatch. The company was founded by Tony Lourakis and Andrew Merisanu in 1998 and is headquartered in Toronto, Canada.

William Blair & Co. LLC (William Blair) is a SEC-registered broker/dealer firm headquartered in Chicago, Illinois. The firm was founded by William McCormick Blair in 1935 and is a subsidiary of WBC Holdings LP. Until 1941, they were known as Blair, Bonner & Co. William Blair provides broking services to individual, institutional and issuing clients.