Dawson Geophysical Company (DWSN) ownership: Wilks Brothers, LLC 80% · institutions 7% · index and ETF funds 0% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Grace & White Inc /ny | 779143.00 | $2.70M | 2.5% | 2026-03-31 |
| RBF Capital, LLC | 423797.00 | $1.47M | 1.4% | 2026-03-31 |
| Vanguard | 146461.00 | $506755.00 | 0.5% | 2026-03-31 |
| Gabelli (GAMCO) | 145200.00 | $502392.00 | 0.5% | 2026-03-31 |
| Geode Capital Management | 81186.00 | $280944.00 | 0.3% | 2026-03-31 |
| U.S. Bancorp | 53443.00 | $184913.00 | 0.2% | 2026-03-31 |
| Marshall Wace | 41019.00 | $141925.00 | 0.1% | 2026-03-31 |
| Pinnacle Associates Ltd | 40360.00 | $139646.00 | 0.1% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-30 | |
| Sell | null | 2025-12-31 | |
| Sell | null | 2025-10-27 | |
| Sell | null | 2025-10-27 | |
| Sell | null | 2025-09-09 | |
| Sell | null | 2025-08-20 | |
| Sell | null | 2025-08-15 | |
| Sell | null | 2025-08-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.