Succession could end after Season 4 or 5

Indiewire

“I think the maximum would be five seasons, but possibly more like four,” Succession writer and executive producer Georgia Pritchett tells The Times of London while promoting her memoir My Mess Is a Bit of a Life. “We’re at the end of filming season three, so at this point Jesse is saying only one more. But that happens every time. We’ve got a good end in sight.”