Ankit Gupta, who only joined the firm six months ago, will lead the region from New Zealand.
Nadine Bell will be based in Auckland and commences her role in mid-April.
Fund management expert Rebecca Thomas will replace Sir Henry van der Heyden on the board.
Andrew Peskett will be acting chief executive from April 1, until Earl Gasparich takes over this year.
Currently chief distribution officer, Adrian Riminton will move into the CRO role from April 1, 2021.
Brent Pattison joined Oceania as its chief financial officer in January 2020.
Kim Hegarty has been appointed to the newly created role.
Global enterprise software executive Bruce Gordon will lead development of cloud-native retail energy solutions.
Anthony Beverley will replace Peter Wilson after the AGM.
Another executive leaves the airline.