View Post Agencies | People WPP’s Maxus Appoints New North American CEO By Patrick Coffee on May. 12, 2014 - 11:46 AM This morning in news that has nothing to do with the Omnicom/Publicis collapse, WPP/GroupM media agency Maxus poached a top executive from Omnicom’s PHD. Steve Williams, who spent two years as president at PHD, will be Maxus ...