Goodman Fielder New Zealand managing director Tim Deane has resigned.
Australia chief executive Julie Coates will take charge of the food manufacturer's New Zealand operation, making her role trans-Tasman.
Goodman Fielder's brands include Edmonds, Ernest Adams, Meadowfresh, Puhoi and Molenberg.
The company is Fonterra's main competitor at the supermarket chiller and sources its milk supply at a regulated price from Fonterra under the Dairy Industry Restructuring Act.
Before joining Goodman Fielder, Deane was a senior Fonterra executive.