Live feed17:18:48·300dINSIDERFilingvia QuantisnowFormer 10% Owner Butterfield Shelby J converted options into 41,929 shares and sold $5,000,033 worth of shares (41,929 units at $119.25) (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NNI· Nelnet Inc.FinanceOriginal source