Live feed18:15:50·1607dINSIDERFilingvia QuantisnowSEC Form 4: Rodermund Sheila M covered exercise/tax liability with 523 shares, decreasing direct ownership by 0.78% to 66,463 units to satisfy withholding taxByQuantisnow·Wall Street's wire, on your screen.IO· Ion Geophysical CorporationEnergyOriginal source