Ashley Conn will be based in Sydney.
Chris Ireland will also head Christchurch operations as GM.
Managing director and a portfolio manager in the team, Will Thomson will be based in Auckland.
Dr Jeremy Helson is leaving to take up a new position at an Australian marine consulting firm.
Lisa Nelson is currently based in the United States.
Sam McIvor takes up the role in August.
Mat Mullany joins the Taiwhenua from the Office of the Auditor-General where he delivered the first Te Ao Māori Strategy and established a roopu of Māori leaders to advise the Auditor-General.
Former NZ Super Fund boss appointed to Jarden/JBWere wealth management tie-up.
Millward was credited for helping to steady the business after successive resignations and board ructions.
