David Margolese (b. 1957) is the co-founder of Sirius XM Radio, America's largest radio broadcaster. He served as the company's Chairman and CEO from 1993 to 2002. Prior to operation, Sirius raised approximately $2 billion, the largest amount of start-up capital raised in the history of finance. In 1980, he co-founded Rogers Wireless, Canada's largest cellular telephone company. He has been nominated as Entrepreneur of the Year by Harvard Business School and inducted into NASA's Space Technology Hall of Fame.