Sam Register is stepping down as president of Warner Bros. Animation, Cartoon Network Studios, and Hanna-Barbera Studios Europe next week. The departure follows a mutual agreement not to renew his contract, according to an internal memo distributed by Warner Bros. Television Group Chair Channing Dungey.
Career Legacy and Key Credits
Register concludes a tenure spanning nearly three decades within the Warner Bros. Discovery corporate structure, which includes 18 years at the helm of Warner Bros. Animation. During his leadership, the division produced numerous high-profile and long-running properties. His executive credits cover major titles such as Teen Titans Go!, Young Justice, and Harley Quinn, shaping the studio's output across both kids and adult animation sectors.
Interim Leadership Structure
Parent company Warner Bros. Discovery has initiated a formal search for a permanent successor to fill the executive vacancy. During the transition period, operations will be managed collectively by existing division executives. Matt Matzkin will continue to oversee Business Operations, working alongside creative department heads Jay Bastian, Jason DeMarco, Audrey Diehl, Sarah Fell, Peter Girardi, and Sammy Perlmutter.
This leadership transition places three of the industry's most prominent animation houses under interim management while Warner Bros. Discovery evaluates candidates to direct the future production strategy of the studios.
The upcoming exit of such a long-standing executive marks a significant turning point for the company's animation division, especially given the shifting landscape of linear television and streaming platforms. Over the past decade, Register navigated the studios through profound industry disruptions, adapting traditional production pipelines to meet the surging demands of direct-to-consumer services and digital-first content strategies.
Industry analysts are closely watching how the media conglomerate will approach the recruitment process for his successor, as the appointee will inherit a diverse portfolio that ranges from iconic heritage cartoon characters to cutting-edge adult animation and action franchises. Finding a leader capable of balancing commercial viability across multiple global platforms with creative risk-taking remains paramount for the future health of these legacy studios.
As the studio prepares for this new chapter, the collective expertise of the interim team—spanning business affairs and creative development—ensures that ongoing projects will proceed without immediate disruption. However, the eventual appointment of a permanent president will ultimately set the tone for how these historic animation brands evolve in an increasingly competitive global marketplace, cementing a legacy that will define the next era of animated storytelling.
