Five owners earned their undergraduate degrees there, including embattled Los Angeles Dodgers owner Frank McCourt and Washington's TedLeonsis, who owns the Wizards and Capitals.
Groupon's executive chairman Eric Lefkofsky and vice chairman TedLeonsis are stepping in as temporary joint chief executives until a replacement for Mr Mason can be found.
Director Eric Lefkofsky, another founder, and Director TedLeonsis, it was announced, were going to run the company as the Board BEGAN a search for a successor.
The daily deals company said Executive Chairman Eric Lefkofsky and Chairman TedLeonsis have been named to the newly created office of the Chief Executive, replacing Mason, effective immediately.
Mr Lefkofsky and TedLeonsis were named as temporary joint chief executives at the end of February when founder Andrew Mason was ousted after the group posted another quarterly loss.