Chief financial officer Doug Warden and chief project delivery officer Pieter Vermeulen are leaving CBH Group, six weeks after chief executive Jimmy Wilson resigned.
The grain co-operative said Mr Warden resigned to purse another employment opportunity and would leave the group at the end of August.
CBH did not give a reason for Mr Vermeulen's departure but said he would leave by the end of October.
The personnel changes have led to a leadership team restructure.
In a statement, CBH said given the growing importance it places on data, analytics and systems, chief information officer Tamour Azam would join the group’s leadership team and start reporting to the chief executive officer.
Mr Azam, who joined CBH in December 2018 as chief information officer, previously reported to the chief financial officer.
“Doug has been with CBH for almost three years leading the finance and IT teams, and I would like to thank Doug for his contribution to CBH during his time with us, it has been great to have him as part of the team,” Mr Macnamara said.
“During Pieter’s time, the project delivery team has delivered 2.7 million tonnes of new storage to the CBH network, 80 throughput enhancements and many sustaining capital projects.
“This is no mean feat, and the team should be proud of what they have delivered under Pieter’s guidance.”
CBH said recruitment for a chief financial officer and chief project delivery officer would commence shortly.