GroupM North America CEO Brian Lesser leaves agency for AT&T

Brian Lesser is leaving his position as chief executive of GroupM North America to take on a role at AT&T.
Kelly Clark, global chief executive of WPP’s GroupM, will take on his responsibilities while the company searches for a replacement.
Lesser took on the role of GroupM North America chief executive two years ago. He’d previously served as global chief executive of Xaxis.
“Brian has been a key contributor to 24/7, Xaxis and most recently GroupM, and we are sorry to see h