Apple TV has confirmed that "Silo," its acclaimed sci-fi drama, will return for a fourth and final season around summer 2027. The announcement came during a Hall H panel at San Diego Comic-Con 2026, with star Rebecca Ferguson teasing that the concluding season will finally answer the show's biggest mysteries, capping off a story that has built a devoted following since its debut.

The confirmation follows a strong run for the show's third season, which premiered on 3 July 2026 and has kept "Silo" in Apple TV's US top ten for more than 500 days. The series holds a 93% average score on Rotten Tomatoes, with the latest season currently sitting at a perfect 100%, and six episodes remain before it concludes. The Comic-Con panel, moderated by Josh Horowitz, featured cast and crew including Graham Yost, Ferguson, Common, Tim Robbins, Ashley Zukerman, Jessica Henwick and Alexandria Riley.