Russell Horowitz

Mr. Horowitz is a founding officer and has served as the Chairman of the Marchex board of directors, Chief Executive Officer and Treasurer since their inception in January 2003. From January 2001 to December 2002, Mr. Horowitz and founding officers jointly reviewed new business opportunities in the retail, media, finance and technology industries. Mr. Horowitz was previously a founder of Go2Net, a provider of online services to merchants and consumers, including merchant web hosting, online payment authorization technology, and Web search and directory services. He served as its Chairman and Chief Executive Officer from its inception in February 1996 until its merger with InfoSpace, a provider of online services focused on Web search, online payment solutions for merchants, mobile infrastructure applications and content for wireless carriers, in October 2000, at which time Mr. Horowitz served as the Vice Chairman and President of the combined company through the merger integration process until January 2001. Additionally, Mr. Horowitz served as the Chief Financial Officer of Go2Net from its inception until May 2000. Prior to Go2Net, Mr. Horowitz served as the Chief Executive Officer and a director of Xanthus Management, LLC, the general partner of Xanthus Capital, a merchant bank focused on investments in early-stage companies, and was a founder and Chief Financial Officer of Active Apparel Group, now Everlast Worldwide. Mr. Horowitz received a B.A. in Economics from Columbia College of Columbia University.