 HOUSTON, May 04, 2021 GLOBE NEWSWIRE -- ION Geophysical Corporation NYSE: IO today announced the Company will participate in the Oppenheimer 6th Annual Emerging Growth Conference to be held virtually on May 11-12, 2021. Chris Usher, President and Chief Executive Officer, Mike Morrison, Executive Vice President and Chief Financial Officer, and Rachel White, Vice President of Investor Relations, will participate in one-on-one meetings on May 12th. To learn more or request an invitation to the event, please visit oppenheimer.comevents. 