In the last 12 months, insiders at Dawson Geophysical neither bought nor sold shares on the open market.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Brothers, Llc Wilks | Director, TenPercentOwner | 0 | 24,609,095 | 24,609,095 | 98.6% | 30 Oct, 2023 |
| 2 | William Anthony Clark | Ceo President | 139,675 | 0 | 139,675 | 0.6% | 29 Oct, 2026 |
| 3 | Ray L Mays | Evp Chief Operating Officer | 100,534 | 0 | 100,534 | 0.4% | 29 Oct, 2026 |
| 4 | Sergei Krylov | Director | 28,415 | 0 | 28,415 | 0.1% | 20 May, 2025 |
| 5 | Ian M. Shaw | Chief Financial Officer | 20,000 | 0 | 20,000 | 0.1% | 18 Aug, 2025 |
| 6 | Bruce Franklin Bradley | Director | 19,165 | 0 | 19,165 | 0.1% | 04 Oct, 2024 |
| 7 | Albert S. Conly | Director | 19,165 | 0 | 19,165 | 0.1% | 04 Oct, 2024 |
| 8 | Jose Carlos Fernandes | Director | 19,165 | 0 | 19,165 | 0.1% | 04 Oct, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 27 Oct, 2026 | William Anthony Clark | Ceo President | Disposed F | 12,175 | $2.09 | $25.45K | 139,675 | Direct |
| 27 Oct, 2026 | Ray L Mays | Evp Chief Operating Officer | Disposed F | 8,116 | $2.09 | $16.96K | 100,534 | Direct |
| 30 Jun, 2026 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 150 | $0.00 | $0 | 108,650 | Direct |
| 31 Dec, 2025 | Farris Wilks | Director, TenPercentOwner | Disposed J | 15,547,010 | — | — | — | Indirect |
| 27 Oct, 2025 | William Anthony Clark | Ceo President | Acquired A | 150,000 | $0.00 | $0 | 151,850 | Direct |
| 27 Oct, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 100,000 | $0.00 | $0 | 108,500 | Direct |
| 09 Sep, 2025 | William Anthony Clark | Ceo President | Acquired A | 550 | $1.59 | $875 | 1,850 | Direct |
| 20 Aug, 2025 | William Anthony Clark | Ceo President | Acquired A | 500 | $1.40 | $700 | 1,300 | Direct |
| 15 Aug, 2025 | Ian M. Shaw | Chief Financial Officer | Acquired A | 5,000 | $1.28 | $6.40K | 15,000 | Direct |
| 15 Aug, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 500 | $1.29 | $645 | 4,950 | Direct |
| 18 Aug, 2025 | Ian M. Shaw | Chief Financial Officer | Acquired A | 5,000 | $1.35 | $6.75K | 20,000 | Direct |
| 15 Aug, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 500 | $1.28 | $640 | 5,450 | Direct |
| 18 Aug, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 1,000 | $1.38 | $1.38K | 6,450 | Direct |
| 18 Aug, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 1,000 | $1.39 | $1.39K | 7,450 | Direct |
| 18 Aug, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 1,050 | $1.40 | $1.47K | 8,500 | Direct |
| 13 Jun, 2025 | William Anthony Clark | Ceo President | Acquired A | 50 | $1.36 | $68 | 800 | Direct |
| 06 Jun, 2025 | William Anthony Clark | Ceo President | Acquired A | 600 | $1.31 | $786 | 750 | Direct |
| 16 May, 2025 | Sergei Krylov | Director | Acquired A | 3,555 | $1.29 | $4.59K | 22,720 | Direct |
| 16 May, 2025 | Ian M. Shaw | Chief Financial Officer | Acquired A | 2,855 | $1.28 | $3.65K | 2,855 | Direct |
| 16 May, 2025 | Ray L Mays | Evp Chief Operating Officer | Acquired A | 600 | $1.28 | $768 | 600 | Direct |