Brian Lesser Unexpectedly Steps Down as Xandr CEO

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

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

A Xandr spokesperson declined to comment on the news, which Reuters broke this afternoon. Additional speculation indicated that Lesser had recently interviewed for the vacant CEO position at sibling company WarnerMedia.

The exit shocked the ad-tech industry, given that Lesser was prominently quoted in this morning’s announcement detailing what the company had expected to be its big news story of the day: Xandr Invest has partnered



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