Bert Allen

Express Scripts, Inc. provides pharmacy benefit management services The company was founded by Howard L. Waltman in September 1986 and is headquartered in St. Louis, MO.

ACNielsen Corp. provides market research, information and analysis services. The company was founded by Arthur C. Nielsen in 1923 and is headquartered in New York, NY.

Zekelman Industries, Inc. engages in the manufacture and sale of industrial steel pipe and tube products. Its brands include Atlas, Wheatland, Sharon Tube, Western Tube & Conduit, Picoma, and Z Modular. It operates through the following segments: Atlas; Electrical Conduit, Fittings and Couplings, Fence Pipe, and Mechanical Tubing (EFM); and Pipe. The Atlas segment includes structural tubing. The Pipe segment refers to the standard pipe and fire sprinkler pipe. The company was founded by John Maneely in 1877 and is headquartered in Chicago, IL.

Medical Staffing Network Healthcare LLC provided employment and staffing solutions. It specialized in placing nurses and other health care professionals at facilities throughout the US. The firm also provided outsourced administrative support, vendor management, and regulatory documentation services. The company was founded in 1980 and was headquartered in Boca Raton, FL.

Exelon Enterprises Co. LLC provides energy, infrastructure services, integrated communications, thermal technologies, energy-efficient offerings, turnkey solutions and capital funding. The company was founded on December 29, 2000 and is headquartered in Philadelphia, PA.