Dawson Geophysical Company
Ownership
Ownership Structure
Who owns Dawson Geophysical Company (DWSN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 19.7% of the shares are freely tradable; institutional investors hold 86.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Grace & White Inc | 2.26 | 702,917 | -9.8 | 06/30/2026 |
| RBF LLC | 1.36 | 423,797 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 0.51 | 156,877 | +38.5 | 06/30/2026 |
| Gabelli Funds LLC | 0.47 | 145,200 | +0.0 | 06/30/2026 |
| Marshall Wace Asset Management Ltd | 0.28 | 86,797 | +111.6 | 06/30/2026 |
| Geode Capital Management, LLC | 0.27 | 83,645 | +3.0 | 06/30/2026 |
| Hillsdale Investment Management Inc. | 0.18 | 54,404 | +58.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 0.50 | 156,016 | +0.0 | 09/30/2026 |
| Gabelli ABC I | 0.26 | 79,200 | +0.0 | 06/30/2026 |
| Gabelli Entpr Mergers & Acquisitions Y | 0.21 | 66,000 | +0.0 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Clark William Anthony | CEO & President | 139,675 | 223,480 $ | Oct 27, 2026 | direct |
| Mays Ray L | EVP & Chief Operating Officer | 100,534 | 160,854 $ | Oct 27, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 27, 2026 | Mays Ray L | EVP & Chief Operating Officer | Other | 8,116 | 2.09 | 16,962 |
| Oct 27, 2026 | Clark William Anthony | CEO & President | Other | 12,175 | 2.09 | 25,446 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 5, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.