Media Super chief executive Ross Martin will leave his post with the $3 billion industry fund at the end of the year.
The decision to move comes after nine years with the fund.
Media Super chairman Gerard Noonan said Martin had done a great job during his tenure, guiding the fund through multiple licensing and legislative issues, as well as the Print Super/JUST Super merger.
"He will be leaving the fund in a great position for continued growth," Noonan said.
Martin said he was in search of new opportunities, having spent almost a decade with Media Super.
"Nine years is a long time to be chief executive. I need new challenges and the board needs new ideas. This is very much an amicable parting. I will miss the fantastic staff and the culture that is Media Super," he said.
The board is currently on the hunt for a replacement for Martin, who will stay on until 31 December 2012.
The fund has hired a former ART executive as its new head of group strategy.
The sovereign wealth fund has revealed six internal hires to support the execution of key strategies.
The fund has announced the departure of a second senior executive in as many months, with its chief member officer to finish up mid-December.
The $89 billion fund has announced a new leadership role within its private markets team.