Live feed15:21:39·1512dINSIDERFilingvia QuantisnowSEC Form 4: Rapp Karen Marie sold $218,394 worth of shares (6,043 units at $36.14), decreasing direct ownership by 5% to 118,448 units (for withholding tax)ByQuantisnow·Wall Street's wire, on your screen.NATI· National Instruments CorporationTechnologyOriginal source