David Brenner founded Marathon Ventures in October 2000. He also founded HalfthePlanet.com, a gateway Internet site for the disability community where he served as President and Chief Executive Officer from its inception until July 2000. He concluded a 16-year career with MCA/Universal Studios, Inc. in 1997 as Senior Vice President, Sales and Marketing of Advertiser-Supported Programming for the MCA/Universal Television and Home Entertainment Groups. He served on the executive committee of the USA Networks and as Executive Vice President of Premier Advertiser Sales, a joint advertising sales venture of MCA/Universal and Paramount Pictures Television. A graduate of Stanford University, he is a past president and current chairman of the board of directors of Richmond Community Services, a nonprofit organization serving people with severe disabilities in Westchester County, New York.