| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2022-02-10 | VANGUARD GROUP INC | MIND TECHNOLOGY, INC | 677,560 | 4.9% | EDGAR |
| SC 13G/A | 2021-11-10 | ARIEL INVESTMENTS, LLC | MIND TECHNOLOGY, INC | - | - | EDGAR |
| SC 13G/A | 2021-07-09 | ARIEL INVESTMENTS, LLC | MIND TECHNOLOGY, INC | - | - | EDGAR |
| SC 13G/A | 2021-03-10 | ARIEL INVESTMENTS, LLC | MIND TECHNOLOGY, INC | - | - | EDGAR |
| SC 13G | 2021-02-12 | ARIEL INVESTMENTS, LLC | MIND TECHNOLOGY, INC | - | - | EDGAR |
| SC 13G | 2021-02-10 | VANGUARD GROUP INC | MIND TECHNOLOGY, INC | 663,672 | 5.2% | EDGAR |
| SC 13G/A | 2020-08-04 | WASATCH ADVISORS INC | MITCHAM INDUSTRIES INC | - | - | EDGAR |
| SC 13G/A | 2020-02-14 | ARIEL INVESTMENTS, LLC | MITCHAM INDUSTRIES INC | - | - | EDGAR |
| SC 13G/A | 2020-02-12 | DIMENSIONAL FUND ADVISORS LP | MITCHAM INDUSTRIES INC | 910,584 | 7.5% | EDGAR |
| SC 13G | 2020-02-10 | WASATCH ADVISORS INC | MITCHAM INDUSTRIES INC | - | - | EDGAR |
| SC 13G/A | 2019-10-11 | AEGIS FINANCIAL CORP | MITCHAM INDUSTRIES INC | 0 | 0.0% | EDGAR |
| SC 13G/A | 2019-02-14 | ARIEL INVESTMENTS, LLC | MITCHAM INDUSTRIES INC | - | - | EDGAR |
| SC 13G/A | 2019-02-08 | AEGIS FINANCIAL CORP | MITCHAM INDUSTRIES INC | 637,831 | 5.3% | EDGAR |
| SC 13G/A | 2019-02-08 | DIMENSIONAL FUND ADVISORS LP | MITCHAM INDUSTRIES INC | 923,913 | 7.6% | EDGAR |
| SC 13G/A | 2018-02-13 | ARIEL INVESTMENTS, LLC | MITCHAM INDUSTRIES INC | - | - | EDGAR |
| SC 13G/A | 2018-02-13 | AEGIS FINANCIAL CORP | MITCHAM INDUSTRIES INC | 826,707 | 6.8% | EDGAR |
| SC 13G/A | 2018-02-09 | DIMENSIONAL FUND ADVISORS LP | MITCHAM INDUSTRIES INC | 946,447 | 7.8% | EDGAR |
| SC 13G/A | 2017-02-14 | ARIEL INVESTMENTS, LLC | MITCHAM INDUSTRIES INC | - | - | EDGAR |
| SC 13G/A | 2017-02-13 | AEGIS FINANCIAL CORP | MITCHAM INDUSTRIES INC | 890,187 | 7.4% | EDGAR |
| SC 13G/A | 2017-02-09 | DIMENSIONAL FUND ADVISORS LP | MITCHAM INDUSTRIES INC | 955,915 | 7.9% | EDGAR |