The Man Who Turned a $1 Million Groupon Investment into $4 Billion - WSJ
Groupon's billionaire cofounder Eric Lefkofsky just raised $70 million for his new company | TechCrunch
JOBS Act Jeopardizes Safety Net for Investors - The New York Times
Eric Lefkofsky, Groupon Backer, on Why Social Media Is Hot - The New York Times
Groupon Cofounders About To Become Billionaires?
The richest people in Illinois, according to Forbes - The San Diego Union-Tribune
ERIC LEFKOFSKY — lightbank
Groupon co-founder pays $19.5 million for Glencoe mansion
Zell Chicago's richest again; Lefkofsky nearly doubles wealth: Forbes - Chicago Sun-Times
Life after Groupon: Brad Keywell and Eric Lefkofsky | Crain's Chicago Business
Chicago Inno - Eric Lefkofsky's Self-Funded Mission to Cure Cancer Through Data
Eric Lefkofsky: A Significantly Better World – Brewminate: A Bold Blend of News and Ideas
Eric Lefkofsky Net Worth (2023) | wallmine
Eric Lefkofsky
Eric Lefkofsky
Groupon CEO Lefkofsky latest to make the Giving Pledge | Crain's Detroit Business
Eric Lefkofsky
Glencoe Billionaire Buys $30.7M Penthouse In Florida: Report | Winnetka, IL Patch
Eric Lefkofsky Net Worth: A Look at the Billionaire's Wealth and Philanthropy!
Russian investors, Facebook Connect and Groupon's sprint to a $1 billion valuation | by Brian Mohr | Medium
Healthcare Unicorn CEO Is Now A Billionaire
Forbes' billionaires list: Here are the richest people in Illinois | Crain's Chicago Business
Top 10 People Who Got Filthy Rich In 2011
Glencoe Billionaire Buys $30.7M Penthouse In Florida: Report | Winnetka, IL Patch
Chicago billionaire identified as mystery buyer who paid $24 million for 3.3 acres in Winnetka
