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

Brian Lesser was one of the architects of GroupM's adtech arm Xaxis

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 him go, but wish him every success in his new role,” GroupM said in a statement.

According to the Wall Street Journal, Lesser will be tasked with “building an advertising and analytics business using the company’s customer data and content assets” at AT&T.

Minda Smiley

Minda Smiley is a reporter at The Drum covering creativity and advertising. Based in Philadelphia, she primarily covers independent agencies and B2B marketing. She also oversees The Drum’s “Independent Influence,” a weekly series that spotlights the work, perspectives and inspirations behind independent agencies. During her time at The Drum, she has covered industry events including SXSW, ANA Masters of Marketing, 4A’s Transformation and C2 Montréal. She is a graduate of the City University of New York’s Graduate School of Journalism.

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