AT&T Taps GroupM North America CEO Brian Lesser To Build A Video And TV Ad Platform
Brian Lesser, CEO of GroupM North America, will leave the company for a role at AT&T, the WPP-owned media buying giant announced on Friday. “Brian has been a key contributor to 24/7, Xaxis and most recently GroupM, and we are sorry to see him go, but wish him every success in his new role,” GroupM […]