Simon Mordant AO is an Australian-based investment banker, art collector, and philanthropist. He started his career as an investment banker, before specializing in M&A. He co-founded Caliburn Partnership before it was acquired by Greenhill & Co. in 2010. He remained at Greenhill Australia for four years, leaving in 2014. In 2015, he co-founded Luminis Partners.
Mordant has been heavily involved in The Arts in Australia. From Wikipedia