In a statement to the ASX, Hunter Hall International said chief executive and managing director, David Deverall, will depart the firm in February.
Hunter Hall executive chairman Peter Hall said Mr Deverall has "decided to pursue other opportunities”.
“I would like to thank David for his contribution to the group over the last three and a half years and wish him well in his future endeavours,” Mr Hall said.
Mr Hall will act as interim chief executive from 5 February while the firm sources a permanent replacement.
Mr Deverall will also retire from the company's board of directors.