Bernard Yong had an eight-year tenure with Mitchell Corporation
Mark Schollum will join the company in March 2025.
Nick Chapman announced amid firm-wide promotions.
Dame Paula Rebstock will be chair; Paul Reid, deputy chair; and Brodie Stevens and Linley Wood will be new directors.
Stephanie Creasy will be chief technology officer, and an internal promotion sees Renee Kinloch take the chief financial officer role.
Mark Ryland has been CEO and director of Milford Asset Management for the past six years.
Sarah Russell beat more than 200 global applicants for the job.
Experienced director Mary-Jane Daly will replace John Minto in the new year.
The Icehouse strengthens board with new members Duncan McFarlane, Rewa Willis, and Mark Synnott.
Lauren Quaintance was appointed to the board in 2023 and has been the deputy chair as well as chair of the People and Culture Committee.