The shares must be traded off market at the price the share was at on the day of signing the transfer.
There is a rule about using a price the share traded at in the last 90 days but I am not sure if it still applies as it was to do with stamp duty, anyway, it does not matter as ISX has been at $1.07 for the last 90 days.
I am not sure if anyone would be willing to give you $1.07 but hey, you never know.