Brian Lesser Unexpectedly Steps Down as Xandr CEO

Industry titan exits AT&T ad unit just hours after unveiling its expanded audience targeting platform

brian lesser
Brian Lesser spent two and a half year's heading up AT&T's ad-tech unit. Getty Images

Brian Lesser has unexpectedly stepped down from his role as CEO of AT&T’s ad-tech unit Xandr.

@ronan_shields ronan.shields@adweek.com Ronan Shields is a programmatic reporter at Adweek, focusing on ad-tech.