Type	Name	Date
Indenture	Indenture, among ION Geophysical Corporation, the subsidiary guarantors named therein, Wilmington Savings Fund Society, FSB, as trustee and collateral agent	04/28/2016
Indenture	Indenture, among ION Geophysical Corporation, the subsidiary guarantors named therein, Wilmington Trust, National Association, as trustee, and U.S. Bank National Association, as collateral agent	05/13/2013
Credit agreement	Credit Agreement, by and among ION Geophysical Corporation, ION International S.À R.L. and China Merchants Bank Co., Ltd., New York Branch, as administrative agent and lender	03/31/2010

Type	Name	Date
By-Laws	Amended and Restated Bylaws of ION Geophysical Corporation	07/07/2021

Type	Name	Date
Employment agreement	Employment Agreement, between ION Geophysical Corporation and Steven Bate	04/01/2022
Separation agreement	Separation Agreement between the Company and Steve Bate	01/03/2020
Separation agreement	Separation Agreement between the ION Geophysical Corporation and R. Brian Hanson	06/04/2019
Equity incentive plans	Amendment to Amended and Restated 2004 Long-Term Incentive Plan	09/02/2011