Quest Software, Inc.

ManpowerGroup, Inc. engages in the provision of workforce solutions and services. It operates through the following segments: Americas, Southern Europe, Northern Europe, Asia Pacific Middle East, and Right Management. The Americas segment offers services as Manpower, Experis, and ManpowerGroup Solutions through both branch and franchise offices. The Southern Europe segment provides permanent, temporary and contract recruitment, assessment and selection, training and outsourcing services. The Northern Europe includes comprehensive suite of workforce solutions and services through Manpower, Experis, ManpowerGroup Solutions in the United Kingdom, the Nordics, Germany, and the Netherlands. The Asia Pacific Middle East segment operates in Japan, Australia, Korea, China, and India. The Right Management segment delivers talent and career management workforce solutions. The company was founded by Elmer Winter and Aaron Scheinfeld in 1948 and is headquartered in Milwaukee, WI.

Arrow Electronics is a global provider of products, services and solutions to industrial and commercial users of electronic components and enterprise computing solutions, with 2011 sales of $21.4 billion. Arrow serves as a supply channel partner for more than 120,000 original equipment manufacturers, contract manufacturers and commercial customers through a global network of more than 390 locations in 53 countries. A Fortune 200 company with 15,700 employees worldwide, Arrow brings technology solutions to a breadth of markets, including telecommunications, information systems, transportation, medical, industrial and consumer electronics.

CDW Corp. engages in the provision of information technology solutions including mobility, security, data center optimization, cloud computing, virtualization and collaboration. It operates through the following segments: Corporate, Small Business, and Public. The Corporate segment serves the private sector business customers. The Small Business segment also caters to the private sector businesses but with smaller number of employees. The Public segment involves government agencies, education, and healthcare institutions. The company was founded in 1984 by Michael P. Krasny and is headquartered in Lincolnshire, IL.