Jeffrey Citron has been the Chairman of the Board since January 2001. Mr. Citron was also the Chief Executive Officer from January 2001 through February 2006. He served as the Chief Strategist from February 2006 to July 2008 and assumed the additional role of Interim Chief Executive Officer from April 2007, upon the resignation of Vonage's & prior Chief Executive Officer, until July 2008. In 1995, Mr. Citron founded The Island ECN, a computerized trading system designed to automate the order execution process. Mr. Citron became the Chairman and CEO of Datek Online Holdings Corp. in February 1998 and departed The Island ECN and Datek Online Holdings Corp. in October 1999.