Known for her innovative approach to media (and less so for a short voiceover career), UM’s U.S. CEO, Kasha Cacy, oversaw a 9% increase in revenue for the firm’s U.S. business last year, with a slew of new clients and successful defenses of existing ones. Since she assumed the CEO role a year ago, the group has won accounts including Accenture, GoPro, Hulu and Fitbit. Cacy, who began her career as a computer programmer at Accenture, joined UM in 2007 and became president of its U.S. business in 2014.