Sept 29 (Reuters) - Westpac Banking Corp WBC.AX :
* CURT ZUBER TO RETIRE, JOANNE DAWSON APPOINTED TO GROUP TREASURER ROLE
* ANNOUNCED THAT ACTING CHIEF EXECUTIVE, WESTPAC INSTITUTIONAL BANK (WIB), CURT ZUBER, WILL BE RETIRING FROM WESTPAC IN 2021
* JOANNE DAWSON HAS BEEN APPOINTED GROUP TREASURER, EFFECTIVE IMMEDIATELY.