Hull FC have confirmed chief executive James Rule is leaving the club after handing in his resignation.
Rule has been with the Black and Whites for seven years, five of which have been as chief executive.
He said: "I leave with wonderful memories. Hull FC is a fantastic club and I am proud to have made a contribution to its growth."
Hull have also confirmed that community executive Jon Flatman will be leaving the KC Stadium too.
Club owner Adam Pearson said: "Both James and Jon have played key roles in the running of a club under very tight budget constraints set by the previous board and are to be congratulated on their achievements and commitment to Hull FC."
The chairman of the club's fans group, FC Voices, Pete Allen says there was an inevitability about Rule's departure.
"I don't think it's too much of a surprise to a lot of people because when new owners come in they obviously review organisations and changes are made," said Allen.
"It was something many of us were expecting might happen."