TMDb/Tulsa King Celebrity Season 4 wraps! Stallone's mafia capo returns in the Taylor Sheridan hit. Cast celebrates as the Tulsa King universe expands with a new spin-off. April 13, 2026 AceShowbiz - Tulsa King has officially completed filming for its Season 4. Among the cast, Garrett Hedlund, who portrays Mitch Keller, took to social media to announce the wrap. His post, "That is an Official Wrap on TULSA KING SEASON 4! What a Cast! What a Crew!!!", indicates that Mitch Keller remains in the game heading into the new season of this Taylor Sheridan-created Paramount+ hit.