David Steinberg

Prior to founding Zeta, Mr. Steinberg founded InPhonic, the largest seller of wireless phones and communications products and services on the Internet, with annual revenue in excess of $400 million. InPhonic was #1 on Inc. 500 list of fastest growing companies in 2004, the year it went public on the NASDAQ. Mr. Steinberg also served as chairman and Chief Executive Officer of Sterling Cellular, a B2B and retail wireless communications provider, and Sterling Communications, a communications telemarketing company. Mr. Steinberg was named the Greater Washington Ernst & Young Entrepreneur of the Year for communications in 2002. He currently sits on the Board of Directors of Faster Cures of the Milken Institute, the Greater Washington Sports Alliance, Cupcake Digital, and the Board of Trustees of Washington & Jefferson College and previously served on the Board of Directors of the U.S. Chamber of Commerce. Mr. Steinberg holds a B.S. from Washington & Jefferson College.