As of October 03, 2026, the three largest insider holders of GEOS are Gary D Owens (Director, 336.80K shares), Gary D Owens (Director, 253.32K shares), Walter R. Wheeler (President Ceo, 172.01K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Gary D Owens | Director | 253,324 | 0 | 253,324 | 26.2% | 08 Feb, 2024 |
| 2 | Walter R. Wheeler | President Ceo | 172,006 | 0 | 172,006 | 17.8% | 09 Feb, 2026 |
| 3 | Michael J Sheen | Svp Chief Technical Officer | 85,881 | 0 | 85,881 | 8.9% | 21 Nov, 2022 |
| 4 | Robbin B. Adams | Svp Chief Technical Officer | 74,921 | 0 | 74,921 | 7.8% | 22 Nov, 2024 |
| 5 | Thomas L Davis | Director | 65,454 | 0 | 65,454 | 6.8% | 09 Feb, 2026 |
| 6 | Robert L. Curda | Vice President Cfo | 61,112 | 0 | 61,112 | 6.3% | 05 Dec, 2025 |
| 7 | Richard F Miles | Director | 48,100 | 0 | 48,100 | 5.0% | 09 Feb, 2026 |
| 8 | Edgar R. Jr. Giesinger | Director | 43,000 | 0 | 43,000 | 4.5% | 09 Feb, 2026 |
| 9 | Richard James Kelley | President Ceo | 41,977 | 0 | 41,977 | 4.3% | 05 Dec, 2025 |
| 10 | Margaret Ashworth | Director | 34,400 | 0 | 34,400 | 3.6% | 09 Feb, 2026 |
| 11 | Tina M Langtry | Director | 31,975 | 0 | 31,975 | 3.3% | 10 Feb, 2023 |
| 12 | Ronald Todd Bushey | Chief Technical Officer | 24,529 | 0 | 24,529 | 2.5% | 05 Dec, 2025 |
| 13 | Stephen C Jumper | Director | 14,900 | 0 | 14,900 | 1.5% | 09 Feb, 2026 |
| 14 | Kenneth Asbury | Director | 13,530 | 0 | 13,530 | 1.4% | 03 Feb, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 09 Feb, 2025 | Stephen C Jumper | Director | Acquired A | 3,500 | $0.00 | $0 | 14,900 | Direct |
| 09 Feb, 2025 | Margaret Ashworth | Director | Acquired A | 3,500 | $0.00 | $0 | 34,400 | Direct |
| 09 Feb, 2026 | Thomas L Davis | Director | Acquired A | 3,500 | $0.00 | $0 | 65,454 | Direct |
| 09 Feb, 2026 | Edgar R. Jr. Giesinger | Director | Acquired A | 3,500 | $0.00 | $0 | 43,000 | Direct |
| 09 Feb, 2025 | Walter R. Wheeler | Director | Acquired A | 3,500 | $0.00 | $0 | 172,006 | Direct |
| 09 Feb, 2026 | Richard F Miles | Director | Acquired A | 3,500 | $0.00 | $0 | 48,100 | Direct |
| 05 Dec, 2025 | Robert L. Curda | Vice President Cfo | Disposed F | 165 | $0.00 | $0 | 61,112 | Direct |
| 02 Dec, 2025 | Ronald Todd Bushey | Chief Technical Officer | Disposed F | 275 | $0.00 | $0 | 12,127 | Direct |
| 20 Nov, 2025 | Ronald Todd Bushey | Chief Technical Officer | Acquired A | 3,600 | $0.00 | $0 | 8,600 | Direct |
| 05 Dec, 2025 | Richard James Kelley | President Ceo | Disposed F | 275 | $0.00 | $0 | 41,977 | Direct |
| 20 Nov, 2025 | Ronald Todd Bushey | Chief Technical Officer | Disposed F | 198 | $0.00 | $0 | 8,402 | Direct |
| 25 Nov, 2025 | Ronald Todd Bushey | Chief Technical Officer | Acquired A | 4,000 | $0.00 | $0 | 12,402 | Direct |
| 25 Nov, 2025 | Robert L. Curda | Vice President Cfo | Acquired A | 4,000 | $0.00 | $0 | 61,277 | Direct |
| 20 Nov, 2025 | Richard James Kelley | President Ceo | Acquired A | 4,500 | $0.00 | $0 | 34,500 | Direct |
| 20 Nov, 2025 | Richard James Kelley | President Ceo | Disposed F | 298 | $0.00 | $0 | 34,252 | Direct |
| 25 Nov, 2025 | Richard James Kelley | President Ceo | Acquired A | 8,000 | $0.00 | $0 | 42,252 | Direct |
| 20 Nov, 2025 | Ronald Todd Bushey | Chief Technical Officer | Acquired A | 3,600 | $0.00 | $0 | 3,600 | Direct |
| 20 Nov, 2025 | Robert L. Curda | Vice President Cfo | Acquired A | 3,600 | $0.00 | $0 | 57,475 | Direct |
| 20 Nov, 2025 | Ronald Todd Bushey | Chief Technical Officer | Disposed F | 198 | $0.00 | $0 | 3,402 | Direct |
| 20 Nov, 2025 | Robert L. Curda | Vice President Cfo | Disposed F | 198 | $0.00 | $0 | 57,277 | Direct |