Mr Wilson, who has been at the company for 29 years, handed over his managing director role to Andrew Coppin in October 2011.
Along with his position on the Wilson HTM board, Mr Wilson will continue as a director of Pinnacle Investment Management (the funds management arm of the business) and chair of the Wilson HTM Priority Funds Investment Committee.
Wilson HTM is a listed financial services company with $1.4 million in funds under management as of 31 May 2013.
