As of June 02, 2026, the three largest insider holders of DWSN are Brothers, Llc Wilks (Director, 24.61Mn shares), William Anthony Clark (Ceo President, 151.85K shares), Ray L Mays (Evp Chief Operating Officer, 108.50K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Ray L Mays | Evp Chief Operating Officer | 108,500 | 0 | 28 Oct, 2025 |
| William Anthony Clark | Ceo President | 151,850 | 0 | 28 Oct, 2025 |
| Sergei Krylov | - | 28,415 | 0 | 20 May, 2025 |
| Brothers, Llc Wilks | - | 0 | 24,609,095 | 30 Oct, 2023 |
| Ian M. Shaw | Chief Financial Officer | 20,000 | 0 | 18 Aug, 2025 |
| Bruce Franklin Bradley | - | 19,165 | 0 | 04 Oct, 2024 |
| Albert S. Conly | - | 19,165 | 0 | 04 Oct, 2024 |
| Jose Carlos Fernandes | - | 19,165 | 0 | 04 Oct, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 31 Dec, 2025 | Farris Wilks | Common Stock, par value $0.01 per share | D | 15,547,010 | - | - | I | J |
| 31 Dec, 2025 | Farris Wilks | Common Stock, par value $0.01 per share | D | 15,547,010 | - | - | I | J |
| 27 Oct, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 100,000 | $0.00 | 108,500 | D | A |
| 27 Oct, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 100,000 | $0.00 | 108,500 | D | A |
| 27 Oct, 2025 | William Anthony Clark | Dawson Geophysical Company-Common Stock $0.01 par value | A | 150,000 | $0.00 | 151,850 | D | A |
| 09 Sep, 2025 | William Anthony Clark | Dawson Geophysical Company-Common Stock $0.01 par value | A | 550 | $1.59 | 1,850 | D | A |
| 20 Aug, 2025 | William Anthony Clark | Dawson Geophysical Company-Common Stock $0.01 par value | A | 500 | $1.40 | 1,300 | D | A |
| 15 Aug, 2025 | Ian M. Shaw | Dawson Geophysical Company-Common Stock $0.01 par value | A | 5,000 | $1.28 | 15,000 | D | A |
| 15 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 500 | $1.29 | 4,950 | D | A |
| 15 Aug, 2025 | Ian M. Shaw | Dawson Geophysical Company-Common Stock $0.01 par value | A | 5,000 | $1.28 | 15,000 | D | A |
| 15 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 500 | $1.29 | 4,950 | D | A |
| 18 Aug, 2025 | Ian M. Shaw | Dawson Geophysical Company-Common Stock $0.01 par value | A | 5,000 | $1.35 | 20,000 | D | A |
| 15 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 500 | $1.28 | 5,450 | D | A |
| 18 Aug, 2025 | Ian M. Shaw | Dawson Geophysical Company-Common Stock $0.01 par value | A | 5,000 | $1.35 | 20,000 | D | A |
| 15 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 500 | $1.28 | 5,450 | D | A |
| 18 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 1,000 | $1.38 | 6,450 | D | A |
| 18 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 1,000 | $1.38 | 6,450 | D | A |
| 18 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 1,000 | $1.39 | 7,450 | D | A |
| 18 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 1,000 | $1.39 | 7,450 | D | A |
| 18 Aug, 2025 | Ray L Mays | Dawson Geophysical Company-Common Stock $0.01 par value | A | 1,050 | $1.40 | 8,500 | D | A |