Carolyn F. Katz

NII Holdings, Inc. engages in the development and provision of wireless communication services. It offers mobile telephone voice, wireless data, push-to-talk services, business solutions, and voice and data roaming solutions. It operates through the Brazil segment. The company was founded in 1995 and is headquartered in Arlington, VA.

Universal Access Global Holdings, Inc. is a communications services company that provides communications circuits. The company provides internet network infrastructure services through its network solutions for communication providers. The company is headquartered in Chicago, IL.

IWO Holdings, Inc. provides digital wireless personal communications services and products. Its network includes most of upstate New York, New Hampshire, Vermont and areas in western Massachusetts and north central Pennsylvania. It is headquartered in Albany, NY.

Vonage Holdings Corp. engages in the provision of communication services through cloud-connected devices. It operates through the Business and Consumer segments. The Business segment provides cloud-based Unified Communications as a Service (UCaaS) solutions, which consist of integrated voice, text, video, data, collaboration, and mobile applications over its scalable Session Initiation Protocol based Voice over Internet Protocol network. The Consumer segment offers UCaaS services and features, via a single identity. The company was founded by Jeffrey Adam Citron on May 1, 2000 and is headquartered in Holmdel, NJ.

Goldman Sachs & Co. LLC (GS&Co.) is a securities brokerage firm headquartered in New York City. Founded in 1927, the firm is a subsidiary of The Goldman Sachs Group, Inc. (NYSE: GS). GS&Co. provides services to help hedge funds manage risk, monitor portfolios, maintain liquidity and build their businesses. They offer clients access to global equity and derivatives markets, as well as foreign exchange, commodities, European Lefts, rates and credit across the Americas, Europe and Asia. The firm proactively monitors capital markets, searching for pockets of liquidity and news that may require changes to those strategies. Integration with the Goldman Sachs network gives clients access to the firm's sectored block trades and their insights into price discovery. Their electronic trading program provides clients with tools to manage their trades from pre-trade analytics to post-trade analysis.

Providence Equity Partners LLC (Providence Equity Partners) is a private equity firm founded in 1989 by Glenn Creamer and Jonathan M. Nelson. The firm is headquartered in Providence, Rhode Island.

Author & Co. LLC is a publishing company that specializes in publishing books. The private company is based in Cheshire, CT. The company was founded by Laura Van Wormer, who has been the CEO since incorporation.