- Bio: David Siegel is the Chief Executive Officer (CEO) of Meetup, where he took the helms two years ago. He was previously the CEO of Investopedia. Siegel became a director at DoubleClick at age 25, and later the company’s CEO at age 40. According to various sources including Wikipedia, Siegel has also served as the President of SeekingAlpha and as a Senior Vice President for 1-800 Flowers. He earned both a Bachelor of Arts in Philosophy, Politics and Economics and an Master of Business Administration (MBA) in Finance and Marketing from the University of Pennsylvania.