IO - ION Geophysical to divest its stake in INOVA Geophysical Equipment JV March, 20 2020 12:39 PM Ion Geophysical Corporation ION Geophysical (IO -0.3%) agrees to sell its 49% equity stake in INOVA Geophysical Equipment ("INOVA") for $12MMore news on: ION Geophysical Corporation, Merger & acquisition news, Read more ...