Dundee have revealed chief executive Scot Gardiner will leave the club at the end of June.
Gardiner was recruited in 2012 to help "stabilise" the club and "build a solid platform for the future".
A statement on the Dundee website read: "That work has now been completed and significant new investment secured.
"With the club back in the Premiership and in good hands, Scot feels this is the natural time to move on and pursue other opportunities within the game."
Gardiner said he has enjoyed his time at Dens Park, adding: "It is a fantastic football club and my thanks go to the board, my colleagues and the fans for the tremendous support I have had during my time here.
"I will miss everyone but I leave confident that the club is in good hands and heading in the right direction."
Dundee revealed that as part of a restructuring process, director John Nelms will serve as their managing director, director Ian Crighton has taken an executive role as chief financial officer and director Steve Martin will be commercial director.