Mark Leiter is Chairman and Chief Strategy Officer of Leiter & Company. He was previously Chief Strategy Officer at Nielsen. Prior to serving as Chief Strategy Officer, he served as Nielsen's Global President of Practices and Consulting Services while concurrently serving as Chief Executive Officer of The Cambridge Group, a Nielsen division specializing in growth strategy consulting. Earlier in his career, he was with McKinsey & Company where he was a founder of McKinsey's business-to-business marketing and branding practices, and author of several McKinsey Quarterly articles. He is Chairman of the Board of Directors of The Demand Institute. In addition to serving as chairman of The Demand Institute, he is a member of The Global Counsellors and the Global Advisory Board of The Conference Board and serves on a Board of Overseers for Bard College. He serves as a Partner of Pereg Ventures, a venture capital firm based in NYC.