Live feed18:17:23·1605dINSIDERFilingvia QuantisnowSEC Form 4: Morrison Michael L covered exercise/tax liability with 781 shares, decreasing direct ownership by 0.60% to 129,190 units (for withholding tax)ByQuantisnow·Wall Street's wire, on your screen.IO· Ion Geophysical CorporationEnergyOriginal source