Last August, I wrote about Groupon co-founders Eric Lefkofsky and Brad Keywell intent on purchasing Chicago's Wrigley Building. It is official. The building has been sold to a consortium of investors including Zeller Realty Group and Groupon co-founders.


Read More: Groupon Co-Founders Among the Buyers of Wrigley Building

The co-founders of Groupon, Brad Keywell and Eric Lefkofsky, are negotiating the possibility of buying the historic Wrigley Building in Chicago, according to several media reports.


Read More: Groupon Looks to Buy Wrigley Building?