He is the founder and former CEO of Groupon, a Chicago-based website offering users discounts on local businesses and scholarships.

Lebanon High School in 1999 and started a Saturday morning delivery service called "Bagel Express" when he was aged 15.

[4] After graduating from Northwestern University in 2003 with a degree in music,[1] Mason worked in web design for Chicago entrepreneur Eric Lefkofsky.

[3][5] Mason stopped working with Lefkofsky to attend the University of Chicago's Harris School of Public Policy after he was awarded a scholarship.

[13] Mason was dismissed as Groupon's CEO on February 28, 2013, the day after the company missed analysts' expectations for sales, and fell far short of the mark when it came to profit.

As CEO, I am accountable....[15]Journalists estimated that his severance pay was just $378.36—six months' worth of salary—based on his employment agreement and his latest public salary information.

One thing that surprised me was that many would arrive at orientation with minimal understanding of basic business wisdom....It was with this in mind that I spent a week in LA earlier this month recording Hardly Workin’, a seven song album of motivational business music targeted at people newly entering the workforce.

"[20]In February 2015, Mason released an iPhone app, Detour, selling unconventional audio tours of major cities.