Rubin remained in the chairman's office and on the board of the company, acting as chairman of the executive committee.

FORBES: Street Quakes As Another Chief Falls

Rubin has remained in the chairman's office and on the board of the company, acting as chairman of the executive committee.

FORBES: Another Wall Street Chief Falls

Prior to that, Mr. Sillerman served as the Executive Chairman, a Member of the Office of the Chairman and a director of SFX Entertainment, Inc. from its formation in December 1997 through its sale to Clear Channel Communications, in August 2000.

FORBES: Robert F.X. Sillerman

The daily deals company said Executive Chairman Eric Lefkofsky and Chairman Ted Leonsis have been named to the newly created office of the Chief Executive, replacing Mason, effective immediately.

FORBES: Groupon Ousts Andrew Mason