| Symbol | Company | Owner | Relationship | Date | Transaction | Cost | # Shares | Value ($) | Total Shares | Filing | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| IO | ION GEOPHYSICAL CORP | ZHENG HUASHENG | Director | Mar 01, 2020 | Option Exercise | $3.52 | 750 | 2,640 | 3,435 | Mar 03, 2020, 04:34 PM | |
| IO | ION GEOPHYSICAL CORP | ZHENG HUASHENG | Director | Mar 01, 2019 | Option Exercise | $13.16 | 563 | 7,409 | 4,185 | Mar 05, 2019, 04:25 PM | |
| IO | ION GEOPHYSICAL CORP | ZHENG HUASHENG | Director | Jun 01, 2018 | Option Exercise | $24.50 | 160 | 3,920 | 373 | Jun 05, 2018, 04:26 PM |
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