April 27 (Reuters) - Aimia Inc AIM.TO :
* AIMIA ANNOUNCES DEPARTURE OF DAVID JOHNSTON
* GROUP CHIEF EXECUTIVE TO LEAVE COMPANY ON APPOINTMENT OF SUCCESSOR
* BOARD OF DIRECTORS AND GROUP CHIEF EXECUTIVE DAVID JOHNSTON HAVE MUTUALLY AGREED ON HIS DEPARTURE FROM COMPANY
* BOARD OF DIRECTORS HAS BEEN ENGAGED IN A PROCESS TO IDENTIFY A SUCCESSOR