Ownership of the shares would probably have to be transferred to "the group", otherwise "the group" would not be the owner of the shares and thus not entitled to a board seat.
Any other arrangement, I believe, would be at the discretion of the current board.
... comes down to language ....
if /the group/ speaks unisono it already is transfered into the group.
retroactivly adding this one address nonsense without prior written statement
from friedcat should put everyone on edge.
For all I know /the group/ has always been one and has done the most elaborated
"sockpuppet theatre" known to forum history

Noone should EVER give private keys or company secrets away.