Quick Takeaways
- GEOS - GEOSPACE TECHNOLOGIES CORP has 14 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 14 Insiders of GEOSPACE TECHNOLOGIES CORP
- Symbol
- GEOS on Nasdaq
- Location
- Houston, TX
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 14 Apr 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
GEOSPACE TECHNOLOGIES CORP executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Walter R. Wheeler | Director | $3,914,856 | Mixed | 09 Feb 2026 | ||
| Gary D. Owens | Director | $3,245,693 | Mixed | 07 Feb 2024 | ||
| Robert L. Curda | Vice President & CFO | $1,588,300 | Mixed | 05 Dec 2025 | ||
| Thomas L. Davis | Director | $1,489,733 | Mixed | 09 Feb 2026 | ||
| Richard F. Miles | Director | $1,140,276 | Mixed | 09 Feb 2026 | ||
| Richard James Kelley | President & CEO | $1,090,982 | Mixed | 05 Dec 2025 | ||
| Edgar R. Giesinger Jr. | Director | $978,680 | Mixed | 09 Feb 2026 | ||
| Robbin B. Adams | SVP & Chief Technical Officer | $902,049 | Mixed | 21 Nov 2024 | ||
| Margaret Ashworth | Director | $782,944 | Mixed | 09 Feb 2026 | ||
| Michael J. Sheen | SVP & Chief Technical Officer | $472,346 | Mixed | 21 Nov 2022 | ||
| Stephen C. Jumper | Director | $339,124 | Mixed | 09 Feb 2026 | ||
| Ronald T. Bushey | Chief Technical Officer | $315,180 | Mixed | 05 Dec 2025 | ||
| Tina M. Langtry | Director | $175,863 | Mixed | 09 Feb 2023 | ||
| Kenneth Asbury | Director | $74,415 | Mixed | 02 Feb 2022 |
Top shareholders of GEOSPACE TECHNOLOGIES CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| DISCIPLINED GROWTH INVESTORS INC /MN |
13D/G
13F
|
Company |
8.8%
|
1,131,568
|
$25,754,488 | -$501,198 | 31 Dec 2025 | |
| Tieton Capital Management, LLC |
13F
13D/G
|
Company |
6.9%
from 13D/G
|
884,176
|
$14,951,000 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
5%
|
648,222
|
$10,961,434 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
|
Company |
4.9%
|
628,404
|
$10,412,654 | -$356,736 | 30 Sep 2025 | |
| Moors & Cabot, Inc. |
13F
|
Company |
4.5%
|
575,950
|
$9,739,315 | — | 31 Dec 2025 | |
| First Eagle Investment Management, LLC |
13F
|
Company |
3.3%
|
430,273
|
$7,275,916 | — | 31 Dec 2025 | |
| GRACE & WHITE INC /NY |
13F
|
Company |
2.4%
|
307,795
|
$5,204,813 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13D/G
13F
|
Company |
2.7%
|
341,602
|
$4,871,245 | $0 | 30 Jun 2025 | |
| Walter R. Wheeler |
3/4/5
|
Director |
1.3%
|
172,006
|
$3,914,856 | — | 09 Feb 2026 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
1.8%
|
231,285
|
$3,911,029 | — | 31 Dec 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
1.5%
|
196,956
|
$3,330,526 | — | 31 Dec 2025 | |
| Gary D. Owens |
3/4/5
|
Director |
—
class O/S missing
|
590,126
|
$3,245,693 | — | 07 Feb 2024 | |
| Glenorchy Capital Ltd |
13F
|
Company |
1.3%
|
170,992
|
$2,891,490 | — | 31 Dec 2025 | |
| De Lisle Partners LLP |
13F
|
Company |
1.1%
|
147,133
|
$2,482,134 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.1%
|
146,107
|
$2,472,074 | — | 31 Dec 2025 | |
| US BANCORP \DE\ |
13F
|
Company |
0.99%
|
127,134
|
$2,149,836 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.98%
|
125,936
|
$2,129,578 | — | 31 Dec 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.89%
|
114,707
|
$1,939,695 | — | 31 Dec 2025 | |
| Robert L. Curda |
3/4/5
|
Vice President & CFO |
0.48%
|
61,112
|
$1,588,300 | — | 05 Dec 2025 | |
| Thomas L. Davis |
3/4/5
|
Director |
0.51%
|
65,454
|
$1,489,733 | — | 09 Feb 2026 | |
| Richard F. Miles |
3/4/5
|
Director |
0.39%
|
50,100
|
$1,140,276 | — | 09 Feb 2026 | |
| Richard James Kelley |
3/4/5
|
President & CEO |
0.33%
|
41,977
|
$1,090,982 | — | 05 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.48%
|
62,020
|
$1,048,758 | — | 31 Dec 2025 | |
| EagleClaw Capital Managment, LLC |
13F
|
Company |
0.48%
|
61,150
|
$1,034,047 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.47%
|
60,136
|
$1,016,900 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.46%
|
58,726
|
$993,057 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.45%
|
58,288
|
$985,650 | — | 31 Dec 2025 | |
| Cambridge Investment Research Advisors, Inc. |
13F
|
Company |
0.45%
|
58,174
|
$984,000 | — | 31 Dec 2025 | |
| Edgar R. Giesinger Jr. |
3/4/5
|
Director |
0.33%
|
43,000
|
$978,680 | — | 09 Feb 2026 | |
| Robbin B. Adams |
3/4/5
|
SVP & Chief Technical Officer |
—
class O/S missing
|
74,921
|
$902,049 | — | 21 Nov 2024 | |
| Margaret Ashworth |
3/4/5
|
Director |
0.27%
|
34,400
|
$782,944 | — | 09 Feb 2026 | |
| Brooklyn Investment Group |
13F
|
Company |
0.34%
|
43,799
|
$761,665 | — | 31 Dec 2025 | |
| Empowered Funds, LLC |
13F
|
Company |
0.31%
|
40,291
|
$681,321 | — | 31 Dec 2025 | |
| 683 Capital Management, LLC |
13F
|
Company |
0.31%
|
39,252
|
$663,751 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.3%
|
38,938
|
$658,442 | — | 31 Dec 2025 | |
| Peapod Lane Capital LLC |
13F
|
Company |
0.29%
|
37,817
|
$639,485 | — | 31 Dec 2025 | |
| IRONWOOD INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.29%
|
36,776
|
$621,882 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.25%
|
32,251
|
$545,364 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.23%
|
30,141
|
$509,684 | — | 31 Dec 2025 | |
| Michael J. Sheen |
3/4/5
|
SVP & Chief Technical Officer |
—
class O/S missing
|
85,881
|
$472,346 | — | 21 Nov 2022 | |
| AlphaQuest LLC |
13F
|
Company |
0.21%
|
27,604
|
$466,784 | — | 31 Dec 2025 | |
| ExodusPoint Capital Management, LP |
13F
|
Company |
0.19%
|
25,049
|
$423,579 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.19%
|
24,918
|
$421,363 | — | 31 Dec 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.19%
|
24,520
|
$415,000 | — | 31 Dec 2025 | |
| ELEVATION POINT WEALTH PARTNERS, LLC |
13F
|
Company |
0.19%
|
24,271
|
$410,423 | — | 31 Dec 2025 | |
| Vestmark Advisory Solutions, Inc. |
13F
|
Company |
0.19%
|
24,271
|
$410,423 | — | 31 Dec 2025 | |
| Mraz, Amerine & Associates, Inc. |
13F
|
Company |
0.19%
|
24,081
|
$407,210 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.18%
|
23,344
|
$394,747 | — | 31 Dec 2025 | |
| XTX Topco Ltd |
13F
|
Company |
0.18%
|
22,936
|
$387,848 | — | 31 Dec 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.17%
|
22,058
|
$372,000 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for GEOSPACE TECHNOLOGIES CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Richard F. Miles | GEOS | Common Stock | Award | 7.85% | 3,500 | 48,100 | 09 Feb 2026 | Direct | ||
| Thomas L. Davis | GEOS | Common Stock | Award | 5.65% | 3,500 | 65,454 | 09 Feb 2026 | Direct | ||
| Edgar R. Giesinger Jr. | GEOS | Common Stock | Award | 8.86% | 3,500 | 43,000 | 09 Feb 2026 | Direct | ||
| Richard James Kelley | GEOS | Common Stock | Tax liability | -0.65% | -275 | 41,977 | 05 Dec 2025 | Direct | ||
| Robert L. Curda | GEOS | Common Stock | Tax liability | -0.27% | -165 | 61,112 | 05 Dec 2025 | Direct | ||
| Ronald T. Bushey | GEOS | Common Stock | Tax liability | -2.22% | -275 | 12,127 | 02 Dec 2025 | Direct | ||
| Ronald Todd Bushey | GEOS | Comm | Award | 47.6% | 4,000 | 12,402 | 25 Nov 2025 | Direct | ||
| Robert L. Curda | GEOS | Common Stock | Award | 6.98% | 4,000 | 61,277 | 25 Nov 2025 | Direct | ||
| Richard James Kelley | GEOS | Common Stock | Award | 23.4% | 8,000 | 42,252 | 25 Nov 2025 | Direct | ||
| Ronald Todd Bushey | GEOS | Common Stock | Tax liability | -2.3% | -198 | 8,402 | 20 Nov 2025 | Direct | ||
| Ronald Todd Bushey | GEOS | Common Stock | Award | 72% | 3,600 | 8,600 | 20 Nov 2025 | Direct | ||
| Richard James Kelley | GEOS | Common Stock | Tax liability | -0.86% | -298 | 34,252 | 20 Nov 2025 | Direct | ||
| Richard James Kelley | GEOS | Common Stock | Award | 15% | 4,500 | 34,500 | 20 Nov 2025 | Direct | ||
| Robert L. Curda | GEOS | Common Stock | Tax liability | -0.34% | -198 | 57,277 | 20 Nov 2025 | Direct | ||
| Robert L. Curda | GEOS | Common Stock | Award | 6.68% | 3,600 | 57,475 | 20 Nov 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.