The four will join Tom Harley, Joel Corey and Cameron Ling in the group.
Paul Chapman, Cameron Mooney and Max Rooke have all stepped aside.
Ling will once again be Harley’s official deputy, while Corey will become deputy vice captain for the first time.
Geelong general manager of football Neil Balme said it was important to have the right people in leadership positions as the Cats look to wrestle back the flag from Hawthorn.
“We feel that this is a strong area of the club and that the players that have been involved in the program should take a lot of pride in that. Three players have stepped aside to allow some of our younger leaders to step forward,” Balme said.
Balme paid tribute to the outgoing members of the leadership group but said the introduction of four new leaders would strengthen the club.
“It would have been easy to simply continue with the same group, and it is a credit to Cameron, Max and Paul that they recognised that it is important for new players to be involved in the process,” he said.
“We believe that in Gary, Jimmy, Corey and Joel we have an excellent group of players join the group.”
