“The Big Bang Theory,” about a group of nerdy friends ran from 2007 to May 2019. The first spinoff, “Young Sheldon,” ran for seven seasons and concluded last year. “Georgie & Mandy’s First Marriage,” will debut its second season in the fall. Warner Bros. and HBO Max are owned by CNN’s parent company.

A new "Big Bang Theory" spinoff series is in the works at HBO Max following the success of previous offshoots "Young Sheldon" and "Georgie & Mandy’s First Marriage."