Geron Corp SEC filings GERN
Geron Corp has 1,001 filings in SEC EDGAR's recent list, going back to Nov 23, 2009. Its latest annual report, Form ARS, was filed on Apr 7, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 7, 2026 | — |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 8, 2026 | — |
| 4 | Insider transaction | Apr 14, 2026 | Apr 13, 2026 |
| 3 | Initial insider ownership | Apr 14, 2026 | Apr 13, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 26, 2026 | Mar 25, 2026 |
| 3 | Initial insider ownership | Mar 26, 2026 | Mar 25, 2026 |
| 4 | Insider transaction | Mar 26, 2026 | Mar 25, 2026 |
| 3 | Initial insider ownership | Mar 26, 2026 | Mar 25, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 3, 2026 | — |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 144 | Notice of proposed sale | Dec 15, 2025 | — |
| 4 | Insider transaction | Oct 20, 2025 | Oct 20, 2025 |
| 3 | Initial insider ownership | Oct 20, 2025 | Oct 20, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 8, 2025 | Aug 7, 2025 |
| 3 | Initial insider ownership | Aug 8, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 4 | Insider transaction | May 13, 2025 | May 9, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Mar 31, 2025 |
| 4/A | Filing | Apr 2, 2025 | Dec 31, 2024 |
| 4/A | Filing | Apr 2, 2025 | Sep 30, 2024 |
| 4/A | Filing | Apr 2, 2025 | Mar 29, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 25, 2025 | — |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Jan 2, 2025 | Dec 31, 2024 |
| 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 | — |
| 3 | Initial insider ownership | Nov 12, 2024 | Nov 11, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 11, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Sep 30, 2024 |
| 3 | Initial insider ownership | Sep 9, 2024 | Sep 9, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 9, 2024 |
| 4 | Insider transaction | Jul 10, 2024 | Jul 8, 2024 |
| 144 | Notice of proposed sale | Jul 8, 2024 | — |
| 4 | Insider transaction | Jun 28, 2024 | Mar 29, 2024 |
| 4 | Insider transaction | Jun 12, 2024 | Jun 10, 2024 |
| 4 | Insider transaction | Jun 12, 2024 | Jun 10, 2024 |
| 144 | Notice of proposed sale | Jun 10, 2024 | — |
| 144 | Notice of proposed sale | Jun 10, 2024 | — |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 5, 2024 | Jun 4, 2024 |
| 144 | Notice of proposed sale | Jun 4, 2024 | — |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 144 | Notice of proposed sale | May 15, 2024 | — |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | May 10, 2024 | May 9, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 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 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2024 | — |
| 4 | Insider transaction | Jan 3, 2024 | Dec 29, 2023 |
| 4 | Insider transaction | Jan 3, 2024 | Dec 29, 2023 |
| 4 | Insider transaction | Jan 3, 2024 | Dec 29, 2023 |
| 4 | Insider transaction | Nov 28, 2023 | Nov 26, 2023 |
| 3 | Initial insider ownership | Nov 28, 2023 | Nov 26, 2023 |
| 4 | Insider transaction | Oct 2, 2023 | Sep 29, 2023 |
| 4 | Insider transaction | Oct 2, 2023 | Sep 29, 2023 |
| 3/A | Amended initial statement of beneficial ownership of securities | Sep 27, 2023 | Aug 1, 2023 |
| 4 | Insider transaction | Sep 27, 2023 | Sep 25, 2023 |
| 3 | Initial insider ownership | Sep 27, 2023 | Sep 25, 2023 |
| 4 | Insider transaction | Sep 21, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Sep 21, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Sep 21, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Sep 21, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 24, 2023 |
| 4 | Insider transaction | Aug 3, 2023 | Aug 1, 2023 |
| 3 | Initial insider ownership | Aug 3, 2023 | Aug 1, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 11, 2023 |
| 144 | Notice of proposed sale | May 11, 2023 | — |
| 4 | Insider transaction | May 1, 2023 | May 1, 2023 |
| 144 | Notice of proposed sale | May 1, 2023 | — |
| 4 | Insider transaction | Apr 3, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | Apr 3, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| 4 | Insider transaction | Feb 24, 2023 | Feb 22, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| 4 | Insider transaction | Feb 10, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Feb 10, 2023 | Feb 8, 2023 |
| 4 | Insider transaction | Feb 10, 2023 | Feb 8, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 3, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 1, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 31, 2023 | — |
| 4 | Insider transaction | Jan 17, 2023 | Jan 13, 2023 |
| SC 13G | Ownership over 5% (passive) | Jan 13, 2023 | — |
| 4 | Insider transaction | Jan 3, 2023 | Dec 30, 2022 |
| 4 | Insider transaction | Jan 3, 2023 | Dec 30, 2022 |
| 4 | Insider transaction | Oct 3, 2022 | Sep 30, 2022 |
| 4 | Insider transaction | Sep 14, 2022 | Sep 12, 2022 |
| 4 | Insider transaction | Sep 8, 2022 | Sep 7, 2022 |
| 3 | Initial insider ownership | Sep 8, 2022 | Sep 7, 2022 |
| 4 | Insider transaction | Jul 12, 2022 | Jul 8, 2022 |
| 3 | Initial insider ownership | Jul 12, 2022 | Jul 9, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jun 30, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jun 30, 2022 |
| 4 | Insider transaction | May 11, 2022 | May 10, 2022 |
| 4 | Insider transaction | May 11, 2022 | May 10, 2022 |
| 4 | Insider transaction | May 11, 2022 | May 10, 2022 |
| 4 | Insider transaction | May 11, 2022 | May 10, 2022 |
| 4 | Insider transaction | May 11, 2022 | May 10, 2022 |
| 4 | Insider transaction | May 11, 2022 | May 10, 2022 |
| 4 | Insider transaction | Apr 21, 2022 | Apr 20, 2022 |
| SC 13G | Ownership over 5% (passive) | Apr 8, 2022 | — |
| 4 | Insider transaction | Apr 1, 2022 | Mar 31, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 16, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 16, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 16, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 16, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 16, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 16, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2022 | — |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Oct 1, 2021 | Sep 30, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jun 30, 2021 |
| 4 | Insider transaction | May 13, 2021 | May 11, 2021 |
| 4 | Insider transaction | May 13, 2021 | May 11, 2021 |
| 4 | Insider transaction | May 13, 2021 | May 11, 2021 |
| 4 | Insider transaction | May 13, 2021 | May 11, 2021 |
| 4 | Insider transaction | May 13, 2021 | May 11, 2021 |
| 4 | Insider transaction | May 13, 2021 | May 11, 2021 |
| 4 | Insider transaction | Apr 2, 2021 | Mar 31, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2021 | — |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| 4 | Insider transaction | Feb 4, 2021 | Feb 2, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2021 | — |
| 4 | Insider transaction | Jan 11, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Oct 2, 2020 | Sep 30, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 10, 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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- GERN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Foster City, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 886744
- Former names
- GERON CORPORATION (until Aug 5, 2005)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.