GroupM North America CEO departs for new role at AT&T

Brian Lesser to lead AT&T’s new advertising & analytics businessNEW YORK and DALLAS — Global media-buying agency GroupM announced Friday morning Brian Lesser, CEO of GroupM North America, is leaving the company for a position at AT&T.GroupM’s director of global communications, David Grabert, emailed Cartt.ca a company statement regarding Lesser’s departure, in which the company said Lesser had been a key contributor to its 24/7 Real Media and Xaxis programmatic advertising business units, prior to becoming CEO of GroupM North America in 2015.“We are sorry to see him go, but wish him every success in his new role. We will...