Dawson Geophysical Co SEC filings DWSN
Dawson Geophysical Co has 1,000 filings in SEC EDGAR's recent list, going back to Nov 29, 2004. Its latest annual report, Form 10-K, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 13, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 29, 2026 | Oct 27, 2026 |
| 4 | Insider transaction | Oct 29, 2026 | Oct 27, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 5, 2026 | — |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 29, 2025 | — |
| 4 | Insider transaction | Oct 28, 2025 | Oct 27, 2025 |
| 4 | Insider transaction | Oct 28, 2025 | Oct 27, 2025 |
| 4 | Insider transaction | Sep 9, 2025 | Sep 9, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 20, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 13, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 6, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | Jan 21, 2025 | Jun 28, 2024 |
| 4 | Insider transaction | Oct 4, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 4, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 4, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 4, 2024 | Oct 1, 2024 |
| 3 | Initial insider ownership | Oct 4, 2024 | Apr 12, 2022 |
| 3 | Initial insider ownership | Oct 4, 2024 | Apr 12, 2022 |
| 3 | Initial insider ownership | Apr 19, 2024 | Nov 20, 2023 |
| 3 | Initial insider ownership | Apr 19, 2024 | Nov 20, 2023 |
| 3 | Initial insider ownership | Nov 2, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Oct 30, 2023 | Sep 13, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 30, 2023 | — |
| 4/A | Form 4/a submission | Jun 30, 2023 | Jun 14, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 29, 2023 | — |
| 4 | Insider transaction | Jun 16, 2023 | Jun 14, 2023 |
| 4/A | Form 4/a submission | Jun 16, 2023 | Jun 12, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Mar 24, 2023 |
| 4 | Insider transaction | Jun 14, 2023 | Jun 9, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2023 | — |
| 4 | Insider transaction | Aug 18, 2022 | Aug 16, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 16, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 16, 2022 |
| 3 | Initial insider ownership | Mar 11, 2022 | Jan 18, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 17, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 28, 2022 | — |
| 3 | Initial insider ownership | Jan 27, 2022 | Jan 18, 2022 |
| 3 | Initial insider ownership | Jan 27, 2022 | Jan 18, 2022 |
| 3 | Initial insider ownership | Jan 27, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 20, 2022 | Jan 18, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Jan 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Dec 21, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Dec 7, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 25, 2021 | — |
| SC 13D | Ownership over 5% (active) | Oct 8, 2021 | — |
| 4 | Insider transaction | Oct 1, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Oct 1, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Oct 1, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Oct 1, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Aug 17, 2021 | Aug 16, 2021 |
| 4 | Insider transaction | Aug 17, 2021 | Aug 16, 2021 |
| 4 | Insider transaction | Aug 17, 2021 | Aug 16, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | Jun 2, 2021 | Jun 1, 2021 |
| 4 | Insider transaction | Jun 2, 2021 | Jun 1, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2021 | — |
| SC 13D | Ownership over 5% (active) | Jan 19, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Dec 10, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Oct 19, 2020 | — |
| 4 | Insider transaction | Sep 17, 2020 | Sep 15, 2020 |
| 4 | Insider transaction | Aug 11, 2020 | Aug 10, 2020 |
| 4 | Insider transaction | Aug 11, 2020 | Aug 10, 2020 |
| 4 | Insider transaction | Aug 11, 2020 | Aug 10, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 9, 2020 | — |
| 4 | Insider transaction | Mar 12, 2020 | Mar 10, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2020 | — |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Oct 1, 2019 | Sep 30, 2019 |
| 4 | Insider transaction | Oct 1, 2019 | Sep 30, 2019 |
| 4 | Insider transaction | Oct 1, 2019 | Sep 30, 2019 |
| 4 | Insider transaction | Oct 1, 2019 | Sep 30, 2019 |
| 4 | Insider transaction | Oct 1, 2019 | Sep 30, 2019 |
| 4 | Insider transaction | Oct 1, 2019 | Sep 30, 2019 |
| SC 13G | Ownership over 5% (passive) | Sep 9, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2019 | — |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | May 31, 2019 | May 30, 2019 |
| 4 | Insider transaction | Apr 2, 2019 | Mar 29, 2019 |
| 4 | Insider transaction | Apr 2, 2019 | Mar 29, 2019 |
| 4 | Insider transaction | Apr 2, 2019 | Mar 29, 2019 |
| 4 | Insider transaction | Apr 2, 2019 | Mar 29, 2019 |
| 4 | Insider transaction | Apr 2, 2019 | Mar 29, 2019 |
| 4 | Insider transaction | Apr 2, 2019 | Mar 29, 2019 |
| 4 | Insider transaction | Mar 13, 2019 | Mar 13, 2019 |
| 4 | Insider transaction | Feb 19, 2019 | Feb 15, 2019 |
| 4 | Insider transaction | Feb 19, 2019 | Feb 15, 2019 |
| 4 | Insider transaction | Feb 19, 2019 | Feb 15, 2019 |
| 4 | Insider transaction | Feb 19, 2019 | Feb 15, 2019 |
| 4 | Insider transaction | Feb 19, 2019 | Feb 15, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Feb 8, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Jan 25, 2019 | — |
| 4/A | Filing | Jan 18, 2019 | Aug 13, 2018 |
| 4 | Insider transaction | Jan 10, 2019 | Jan 8, 2019 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Oct 2, 2018 | Sep 28, 2018 |
| 4 | Insider transaction | Oct 2, 2018 | Sep 28, 2018 |
| 4 | Insider transaction | Oct 2, 2018 | Sep 28, 2018 |
| 4 | Insider transaction | Oct 2, 2018 | Sep 28, 2018 |
| 4 | Insider transaction | Oct 2, 2018 | Sep 28, 2018 |
| 4 | Insider transaction | Oct 2, 2018 | Sep 28, 2018 |
| 4 | Insider transaction | Aug 16, 2018 | Aug 15, 2018 |
| 4 | Insider transaction | Aug 14, 2018 | Aug 13, 2018 |
| 4 | Insider transaction | Aug 13, 2018 | Aug 10, 2018 |
| 4 | Insider transaction | Aug 10, 2018 | Aug 8, 2018 |
| 4 | Insider transaction | Aug 8, 2018 | Aug 6, 2018 |
| 4/A | Filing | Jul 6, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jul 2, 2018 | Jun 29, 2018 |
| 4 | Insider transaction | Jun 1, 2018 | May 30, 2018 |
| 4 | Insider transaction | Jun 1, 2018 | May 30, 2018 |
| 4 | Insider transaction | Jun 1, 2018 | May 30, 2018 |
| 4 | Insider transaction | Jun 1, 2018 | May 30, 2018 |
| 4 | Insider transaction | Jun 1, 2018 | May 30, 2018 |
| 4 | Insider transaction | Jun 1, 2018 | May 30, 2018 |
| 3 | Initial insider ownership | May 9, 2018 | May 1, 2018 |
| 4 | Insider transaction | Apr 2, 2018 | Mar 29, 2018 |
| 4 | Insider transaction | Apr 2, 2018 | Mar 29, 2018 |
| 4 | Insider transaction | Apr 2, 2018 | Mar 29, 2018 |
| 4 | Insider transaction | Apr 2, 2018 | Mar 29, 2018 |
| 4 | Insider transaction | Apr 2, 2018 | Mar 29, 2018 |
| 4 | Insider transaction | Apr 2, 2018 | Mar 29, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2018 | — |
| 4/A | Filing | Feb 5, 2018 | May 30, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2018 | — |
| 4 | Insider transaction | Jan 2, 2018 | Dec 29, 2017 |
| 4 | Insider transaction | Jan 2, 2018 | Dec 29, 2017 |
| 4 | Insider transaction | Jan 2, 2018 | Dec 29, 2017 |
| 4 | Insider transaction | Jan 2, 2018 | Dec 29, 2017 |
| 4 | Insider transaction | Jan 2, 2018 | Dec 29, 2017 |
| 4 | Insider transaction | Jan 2, 2018 | Dec 29, 2017 |
| 4 | Insider transaction | Dec 18, 2017 | Dec 15, 2017 |
| 4 | Insider transaction | Dec 13, 2017 | Dec 12, 2017 |
| 4 | Insider transaction | Dec 12, 2017 | Dec 11, 2017 |
| 4 | Insider transaction | Dec 7, 2017 | Dec 5, 2017 |
| 4 | Insider transaction | Dec 7, 2017 | Dec 5, 2017 |
| 4 | Insider transaction | Dec 7, 2017 | Dec 5, 2017 |
| 4 | Insider transaction | Oct 3, 2017 | Sep 30, 2017 |
| 4 | Insider transaction | Oct 3, 2017 | Sep 30, 2017 |
| 4 | Insider transaction | Oct 3, 2017 | Sep 30, 2017 |
| 4 | Insider transaction | Oct 3, 2017 | Sep 30, 2017 |
| 4 | Insider transaction | Oct 3, 2017 | Sep 30, 2017 |
| 4 | Insider transaction | Oct 3, 2017 | Sep 30, 2017 |
| 4 | Insider transaction | Aug 11, 2017 | Aug 10, 2017 |
| 4 | Insider transaction | Aug 11, 2017 | Aug 10, 2017 |
| 4 | Insider transaction | Aug 11, 2017 | Aug 10, 2017 |
| 4 | Insider transaction | Aug 11, 2017 | Aug 10, 2017 |
| 4 | Insider transaction | Aug 11, 2017 | Aug 10, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2017 | — |
| 4 | Insider transaction | Jul 5, 2017 | Jun 30, 2017 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Oil & Gas Field Exploration Services (SIC 1382)
- Listed as
- DWSN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- TX
- Headquarters
- Midland, TX
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 799165
- Former names
- TGC INDUSTRIES INC (until Feb 11, 2015)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.