Agencies | People Terkelsen Takes CEO Post at MediaVest By Kiran Aditham on Jun. 13, 2012 - 10:46 AM Nine-year Starcom MediaVest Group vet Brian Terkelsen has been promoted to CEO of New York-based MediaVest USA. Terkelsen (pictured) has spent his career at SMG as president of its branded content practice, LiquidThread, which he ...