Jack Martin is global chairman and chief executive officer of Hill+Knowlton Strategies. Prior to leading H+K Strategies, he was founding chairman of Public Strategies, Inc., which was acquired by WPP of London in 2006 and merged with Hill+Knowlton in 2010. Martin founded Public Strategies in 1988 and directed the rapid growth of the firm. He serves on the board of the Smithsonian National Museum of American History.