Form 10-K/A ION GEOPHYSICAL CORP For: Dec 31
Exhibit 31.3
Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350,
As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
I, Christopher Usher, hereby certify that:
1. | I have reviewed this report on Form 10-K of ION Geophysical Corporation. |
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: April 30, 2021 | |
/s/ Christopher Usher | |
Christopher Usher | |
President and Chief Executive Officer (Principal Executive Officer) |
Exhibit 31.4
Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350,
As Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
I, Michael Morrison, certify that:
1. | I have reviewed this report on Form 10-K of ION Geophysical Corporation. |
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: April 30, 2021 | |
/s/ Michael Morrison | |
Michael Morrison | |
Executive Vice President and Chief Financial Officer (Principal Financial Officer) |
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