Taysha Gene Therapies, Inc. SEC filings TSHA
Taysha Gene Therapies, Inc. has 401 filings in SEC EDGAR's recent list, going back to May 4, 2020. Its latest annual report, Form ARS, was filed on Apr 22, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 11, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 4 | Insider transaction | Jul 10, 2026 | Jul 10, 2026 |
| 144 | Notice of proposed sale | Jul 10, 2026 | — |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | Apr 13, 2026 | Apr 10, 2026 |
| 144 | Notice of proposed sale | Apr 10, 2026 | — |
| 144 | Notice of proposed sale | Feb 27, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 144 | Notice of proposed sale | Feb 4, 2026 | — |
| 4 | Insider transaction | Jan 27, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 27, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 27, 2026 | Jan 23, 2026 |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| 144 | Notice of proposed sale | Jan 23, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 144 | Notice of proposed sale | Jan 12, 2026 | — |
| 4 | Insider transaction | Dec 1, 2025 | Nov 28, 2025 |
| 144 | Notice of proposed sale | Nov 28, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 144 | Notice of proposed sale | Sep 22, 2025 | — |
| 4 | Insider transaction | Sep 12, 2025 | Sep 10, 2025 |
| 144 | Notice of proposed sale | Sep 10, 2025 | — |
| 4 | Insider transaction | Aug 22, 2025 | Aug 21, 2025 |
| 4 | Insider transaction | Aug 22, 2025 | Aug 21, 2025 |
| 144 | Notice of proposed sale | Aug 21, 2025 | — |
| 144 | Notice of proposed sale | Aug 21, 2025 | — |
| 144 | Notice of proposed sale | Aug 21, 2025 | — |
| 144 | Notice of proposed sale | Aug 21, 2025 | — |
| 144 | Notice of proposed sale | Aug 21, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 16, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 3, 2025 | — |
| 4 | Insider transaction | Jun 4, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 4, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 4, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 4, 2025 | Jun 2, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 3, 2025 | — |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 4/A | Filing | Apr 10, 2025 | May 31, 2023 |
| 4 | Insider transaction | Mar 13, 2025 | Mar 11, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 5, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 5, 2025 | — |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| 144 | Notice of proposed sale | Jul 5, 2024 | — |
| 144 | Notice of proposed sale | Jul 5, 2024 | — |
| 144 | Notice of proposed sale | Jul 5, 2024 | — |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| 4 | Insider transaction | Feb 6, 2024 | Feb 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Dec 18, 2023 | Dec 14, 2023 |
| 4 | Insider transaction | Dec 18, 2023 | Dec 14, 2023 |
| 4 | Insider transaction | Dec 18, 2023 | Dec 14, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 4 | Insider transaction | Nov 3, 2023 | Nov 1, 2023 |
| 3 | Initial insider ownership | Nov 3, 2023 | Nov 1, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 11, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Aug 28, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Aug 25, 2023 | — |
| 4 | Insider transaction | Aug 25, 2023 | Aug 24, 2023 |
| SC 13G | Ownership over 5% (passive) | Aug 25, 2023 | — |
| 144 | Notice of proposed sale | Aug 24, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 21, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 18, 2023 | — |
| 4 | Insider transaction | Aug 16, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Jul 14, 2023 | Jul 12, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 22, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 22, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 22, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 22, 2023 |
| 3 | Initial insider ownership | Jun 26, 2023 | Jun 22, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 22, 2023 |
| 4 | Insider transaction | Jun 22, 2023 | Jun 20, 2023 |
| 144/A | Filing | Jun 20, 2023 | — |
| 144 | Notice of proposed sale | Jun 20, 2023 | — |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 144 | Notice of proposed sale | Jun 1, 2023 | — |
| 144 | Notice of proposed sale | Jun 1, 2023 | — |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 144 | Notice of proposed sale | May 11, 2023 | — |
| 4 | Insider transaction | Mar 8, 2023 | Mar 6, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 6, 2023 | Feb 2, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Dec 30, 2022 |
| 4 | Insider transaction | Jan 4, 2023 | Dec 30, 2022 |
| 4 | Insider transaction | Dec 23, 2022 | Nov 10, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 10, 2022 | — |
| 4 | Insider transaction | Nov 2, 2022 | Oct 31, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 2, 2022 | — |
| 3 | Initial insider ownership | Oct 31, 2022 | Oct 21, 2022 |
| SC 13D | Ownership over 5% (active) | Oct 31, 2022 | — |
| 4 | Insider transaction | Aug 24, 2022 | Aug 23, 2022 |
| 4 | Insider transaction | Aug 22, 2022 | Aug 18, 2022 |
| SC 13G | Ownership over 5% (passive) | Jul 8, 2022 | — |
| 4 | Insider transaction | Jul 7, 2022 | Jul 5, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Feb 25, 2022 | Feb 23, 2022 |
| 4 | Insider transaction | Feb 25, 2022 | Feb 23, 2022 |
| 4 | Insider transaction | Feb 25, 2022 | Feb 23, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2022 | — |
| 4 | Insider transaction | Feb 4, 2022 | Feb 2, 2022 |
| 4 | Insider transaction | Feb 3, 2022 | Feb 2, 2022 |
| 4 | Insider transaction | Feb 3, 2022 | Feb 2, 2022 |
| 4 | Insider transaction | Dec 8, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 29, 2021 | Nov 24, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 23, 2021 |
| SC 13G | Ownership over 5% (passive) | Sep 24, 2021 | — |
| 4 | Insider transaction | Aug 20, 2021 | Aug 18, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jun 29, 2021 |
| 4 | Insider transaction | Jun 21, 2021 | Jun 17, 2021 |
| 4 | Insider transaction | Jun 21, 2021 | Jun 17, 2021 |
| 4 | Insider transaction | Jun 21, 2021 | Jun 17, 2021 |
| 4 | Insider transaction | Jun 21, 2021 | Jun 17, 2021 |
| 4 | Insider transaction | Jun 21, 2021 | Jun 17, 2021 |
| 4 | Insider transaction | Jun 21, 2021 | Jun 17, 2021 |
| 4 | Insider transaction | May 24, 2021 | May 20, 2021 |
| 4 | Insider transaction | May 17, 2021 | May 14, 2021 |
| 5 | Annual insider ownership | Feb 16, 2021 | Dec 31, 2020 |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 2, 2021 | — |
| 4 | Insider transaction | Jan 20, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 20, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 20, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Nov 24, 2020 | Nov 23, 2020 |
| 4 | Insider transaction | Nov 24, 2020 | Nov 23, 2020 |
| 3 | Initial insider ownership | Nov 24, 2020 | Nov 23, 2020 |
| 3 | Initial insider ownership | Nov 24, 2020 | Nov 23, 2020 |
| SC 13G | Ownership over 5% (passive) | Oct 13, 2020 | — |
| SC 13D | Ownership over 5% (active) | Oct 5, 2020 | — |
| SC 13D | Ownership over 5% (active) | Oct 5, 2020 | — |
| 4 | Insider transaction | Sep 30, 2020 | Sep 28, 2020 |
| 4 | Insider transaction | Sep 30, 2020 | Sep 28, 2020 |
| 4 | Insider transaction | Sep 30, 2020 | Sep 28, 2020 |
| 4 | Insider transaction | Sep 30, 2020 | Sep 28, 2020 |
| 4 | Insider transaction | Sep 25, 2020 | Sep 23, 2020 |
| 4 | Insider transaction | Sep 25, 2020 | Sep 23, 2020 |
| 4 | Insider transaction | Sep 25, 2020 | Sep 23, 2020 |
| 4 | Insider transaction | Sep 25, 2020 | Sep 23, 2020 |
| 4 | Insider transaction | Sep 25, 2020 | Sep 23, 2020 |
| 4 | Insider transaction | Sep 25, 2020 | Sep 23, 2020 |
| 3 | Initial insider ownership | Sep 23, 2020 | Sep 23, 2020 |
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
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- TSHA (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Dallas, TX
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1806310
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.