Live feed21:32:32·1836dINSIDERFilingvia QuantisnowSEC Form 4: Williamson Ken disposed of $50,941 worth of Common Stock (23,584 units at $2.16), decreasing direct ownership by 14% to 140,524 units to satisfy withholding taxByQuantisnow·Wall Street's wire, on your screen.IO· Ion Geophysical CorporationEnergyOriginal source