Executives
Ann Sarnoff (Chairman, WarnerMedia Studios & Networks Group)Gerhard Zeiler (President, WarnerMedia International)John K. Billock (President, HBO U.S. Group)
Casey Bloys (President of Programming)
Elana Loewenthal (Chief Marketing Officer) Networks and
Ventures Defunct and Miscellaneous
1 Except where otherwise noted, HBO's international services are operated by Home Box Office, Inc. through WarnerMedia International. 2 Owned by Bell Media ; Warner Bros. Discovery licenses HBO programming and branding to Bell for the service. 3 Home Box Office, Inc. (through Time, Inc./Time Warner) maintained a minority stake in BET Holdings. 4 Originally operated as a 50/50 equity split with Viacom , which bought HBO/Time Warner's stake in Comedy Central in 2004. 5 Originally named Selecciones en Español de HBO y Cinemax from 1989 to 1993. 6 HBO Home Entertainment was transferred to Warner Bros. Home Entertainment Group in 2019. 7 TriStar was founded and initially operated as a joint venture between HBO/Time, Inc., CBS and Columbia Pictures ; Columbia and TriStar are both currently owned by Sony Pictures Entertainment .8 Operated as a joint venture between HBO and HGTV Canada (owned by Corus Entertainment ). 
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