The event brings together 400 executive women and men from the corporate and government worlds to consider, learn and discuss how they can thrive professionally and personally.
"I am disappointed that the concerns Mr Rudd has publicly expressed this evening were never personally raised with me, nor did he contact me to discuss his resignation prior to his decision, " she said in a statement.
For example, a CEO whose personally closest colleague is the financial director will be more likely to discuss human resources questions with him than with the H.