 HOUSTON, March 05, 2021 GLOBE NEWSWIRE -- ION Geophysical Corporation NYSE: IO announced today that it is proceeding with steps to launch its previously announced rights offering Rights Offering for its New Second Lien Convertible Notes New Notes or its Common Stock, as part of its restructuring transactions the Restructuring Transactions approved by shareholders on February 23, 2021. The Company has filed a registration statement on Form S-1 with the Securities and Exchange Commission SEC. The Company expects to launch the rights offering after the Registration Statement is declared effective by the SEC. 