Oroton Group CEO Mark Newman has resigned immediately.
Newman has been managing director and CEO for the last four years.
Oroton Group director Ross Lane has been appointed to the position on an interim basis.
Oroton Group chairman John Schmoll said Lane, who is a majority shareholder together with his family, has an intimate knowledge of the business.
"This knowledge together with Ross's broad retail experience from active participation in the successful growth of an number of other retail businesses means Ross is ideally qualified to lead the company during this important period of transition."