Live feed17:38:56·1226dINSIDERFilingvia QuantisnowSEC Form 4: Dvorak Kerrie converted options into 3,271 shares and covered exercise/tax liability with 1,450 shares, increasing direct ownership by 71% to 4,381 units to cover taxesByQuantisnow·Wall Street's wire, on your screen.GRPN· Groupon Inc.Consumer DiscretionaryOriginal source