Nierenberg Investment Management Company Inc. 13D and 13G filings for Geospace Technologies Corporation:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2020-08-26 5:14 pm Sale | 2020-08-24 | 13D | Geospace Technologies Corporation GEOS | Nierenberg Investment Management Company Inc. | 552,765 4.000% | -146,475 (-20.95%) | Filing |
| 2020-05-27 5:15 pm Unchanged | 2020-05-26 | 13D | Geospace Technologies Corporation GEOS | Nierenberg Investment Management Company Inc. | 699,240 5.100% | 0 (Unchanged) | Filing |
| 2020-05-18 3:41 pm Purchase | 2020-05-15 | 13G | Geospace Technologies Corporation GEOS | Nierenberg Investment Management Company Inc. | 699,240 5.100% | 303,906 (+76.87%) | Filing |