Stephen P. Master

Protection One, Inc. provides electronic security alarm monitoring systems. Its services include installation, maintenance, electronic monitoring of alarm systems to single family residential, commercial, multifamily and wholesale customers. The firm also offers energy management, video surveillance and remote access services. The company was founded in 1988 and is headquartered in Romeoville, IL.

Inteliquent, Inc. engages in the provision of voice telecommunication services. It offers these services using an all-IP network, which enables the delivery of global connectivity for media, including voice, data, and video. The company was founded by James P. Hynes, David Russell Wojcik, Christopher Swenson, and Ronald W. Gavillet on April 19, 2001 and is headquartered in Chicago, IL.

Simplifi Holdings, Inc. provides a demand side platform that integrates search and display advertising. It offers search retargeting, site retargeting, contextual targeting, geographic targeting and reporting solutions. The firm develops a programmatic platform for use in localized display, mobile, video and social campaigns. It serves various brands, agencies, networks and trading desks. The company was founded by Frost R. Prioleau, Paul R. Harrison, Donald C. Epperson and Armin Roehrl in 2010 and is headquartered in Fort Worth, TX.

GTCR LLC (GTCR) is a private equity firm founded in 1980 by Charlie Thomas. The firm is headquartered in Chicago, Illinois.

Vocus, Inc. provides cloud-based marketing and public relations software that enables companies to acquire and retain customers. It offers products and services to help customers attract and engage prospects, capture and keep customers and measure and improve marketing effectiveness. The company's cloud solutions address key areas of digital marketing and public relations, including social media marketing, search marketing and news distribution, email marketing and publicity. Its software is designed for marketers to attract customers through search engines, increase and engage their followers on social networks such as facebook, linkedin and twitter, communicate with prospects and customers via email and generate and track visibility in traditional and online media. The company's buyers primarily consist of marketing and public relations professionals that share a common goal of marketing. Vocus was founded by Richard E. Rudman and Robert William Lentz in 1988 and is headquartered in Chicago, IL.

Onvoy LLC provides telecommunications solutions. It products include VoIP origination service, wholesale long distance, tandem and transit, toll free, SS7 and database services, call management, iowa integrated switched service, and MIEAC tandem services. The company was founded in 1991 and is headquartered in Chicago, IL.

Beeline.com, Inc. provides human resource services. It specializes in solutions that optimize the non-employee workforce. The firm?s technical and business services include implementation, integrations, support, training, vendor administration and account management, global strategy and governance, consulting and custom data analysis. The company is headquartered in Jacksonville, FL.

UBS Investment Bank provides investment banking and securities brokerage services. Its clients include institutional and corporate clients, intermediaries, governments, and hedge funds. The firm also provides merger and acquisition advisory, private placement, investment research, foreign exchange, equity, and leverage finance advisory services. The firm is headquartered in San Francisco, CA.

Park Place Technologies LLC engages in the provision of data center hardware maintenance services. It offers storage, server and network maintenance, and proactive monitoring services. The company was founded by Dan Grajzl and John Warcaba in 1991 and is headquartered in Cleveland, OH.