Institutional Ownership
Geospace Technologies Corp
CUSIP 37364X109COMGEOSQ1 2026
13D / 13G Filings
46
Schedule 13D/13G on record
Beneficial Filers
13
Distinct reporting persons
Largest Stake
15.1%
Max % of class reported
Institutional Holders
83
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
46 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Disciplined Growth Investors Inc /Mn | 13G/A | 8.8% | 1.13M | SEC |
| 2 | Jan 30, 2026 | The Vanguard Group | 13G | 5.0% | 648.2K | SEC |
| 3 | Nov 14, 2025 | Disciplined Growth Investors Inc /Mn | 13G/A | 9.0% | 1.15M | SEC |
| 4 | Oct 30, 2025 | The Vanguard Group | 13G/A | 4.9% | 634.5K | SEC |
| 5 | Oct 9, 2025 | Dimensional Fund Advisors LP | 13G/A | 4.9% | 628.4K | SEC |
| 6 | Aug 14, 2025 | Disciplined Growth Investors Inc /Mn | 13G/A | 9.7% | 1.24M | SEC |
| 7 | Jul 17, 2025 | Blackrock, Inc. | 13G/A | 2.7% | 341.6K | SEC |
| 8 | May 15, 2025 | Disciplined Growth Investors Inc /Mn | 13G/A | 9.9% | 1.27M | SEC |
| 9 | Feb 14, 2025 | Disciplined Growth Investors Inc /Mn | 13G/A | 11.2% | 1.43M | SEC |
| 10 | Feb 11, 2025 | Tieton Capital Management, LLC | 13G/A | 6.9% | 885.7K | SEC |
36 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Geospace Technologies Corp.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Disciplined Growth Investors Inc /Mn | 1.10M | $13.44M |
| 2 | Dimensional Fund Advisors LP | 491.0K | $5.99M |
| 3 | Grace & White Inc /Ny | 473.2K | $5.77M |
| 4 | Sei Investments Co | 410.9K | $5.01M |
| 5 | First Eagle Investment Management, LLC | 240.0K | $2.93M |
| 6 | Blackrock, Inc. | 225.6K | $2.75M |
| 7 | Moors & Cabot, Inc. | 190.6K | $2.33M |
| 8 | Marshall Wace, LLP | 188.8K | $2.30M |
| 9 | Glenorchy Capital Ltd | 173.3K | $2.11M |
| 10 | Geode Capital Management, LLC | 152.2K | $1.86M |