Stankey is set to start working in his new role on 1 July. Stephenson will continue to serve as the Executive Chairman of AT&T’s board until January 2021. He worked in his role as CEO for 13 years, contributing to the acquisition of Leap Wirless, WarnerMedia, and DirectTV.
As the company's new CEO, he will oversee Warner Bros., HBO, the Turner cable assets and the company's nascent HBO Max streaming platform. Killar will start working his new role on 1 May and will report to AT&T's President and Chief Operating Officer, John Stankey.