Longtime HBO executive Michael Lombardo is leaving his job as the pay-cable network's programming president.
No successor has been named and no departure date is set for Lombardo, who has been with HBO for 33 years.
HBO spokesman Jeff Cusson confirmed the planned exit and said Lombardo made the decision to leave.
Lombardo has been an executive at HBO as it transformed itself into an original programming power. During his tenure as program chief, the network has enjoyed success with such series as True Blood, Girls, Veep, Silicon Valley, Last Week Tonight with John Oliver and Game of Thrones, HBO's biggest audience hit to date.
He also has overseen such miniseries as Olive Kitteridge and Generation Kill and many HBO films, including The Normal Heart, Behind the Candelabra, Grey Gardens and Game Change, along with the Cinemax series, The Knick.
HBO recently has hit some bumps, too, with rock-oriented drama Vinyl not yet breaking out; production issues delaying the arrival of much-awaited Westworld; a poorly reviewed second-season of True Detective after an award-winning inaugural outing; and the cancellation of horse-racing drama Luck.
HBO's most recent significant programming executive move came early this year, when comedy chief Casey Bloys assumed oversight of drama series and other programming, taking over from departing drama head Michael Ellenberg.
Variety first reported the news of Lombardo's impending departure.
Contributing: Gary Levin
