Geron Corp SEC filings GERN
Geron Corp has 1,002 filings in SEC EDGAR's recent list, going back to Nov 16, 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 |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2026 | Nov 4, 2026 |
| 8-K |
Current report
Other events
|
Oct 28, 2026 | Oct 28, 2026 |
| 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 | — |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 5, 2026 |
| S-8 | Employee stock plan registration | Aug 5, 2026 | — |
| 10-Q | Quarterly report | Aug 5, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 27, 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 |
| 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 | — |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 14, 2026 | Apr 13, 2026 |
| 3 | Initial insider ownership | Apr 14, 2026 | Apr 13, 2026 |
| ARS | Annual report to shareholders | Apr 7, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 7, 2026 | — |
| DEF 14A | Proxy statement | Apr 7, 2026 | May 20, 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 |
| 8-K |
Current report
Officer or director change
|
Mar 26, 2026 | Mar 25, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 3, 2026 | — |
| S-3ASR | Automatic shelf registration | Mar 2, 2026 | — |
| 10-K | Annual report | Mar 2, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2026 | Feb 25, 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 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Material agreement
|
Jan 6, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Exit or restructuring costs
|
Dec 16, 2025 | Dec 10, 2025 |
| 144 | Notice of proposed sale | Dec 15, 2025 | — |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| 4 | Insider transaction | Oct 20, 2025 | Oct 20, 2025 |
| 3 | Initial insider ownership | Oct 20, 2025 | Oct 20, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 14, 2025 | Oct 10, 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 |
| S-8 | Employee stock plan registration | Aug 6, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Aug 6, 2025 | Aug 1, 2025 |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| S-8 | Employee stock plan registration | Jun 30, 2025 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 27, 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 |
| 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 |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 7, 2025 | May 7, 2025 |
| ARS | Annual report to shareholders | Apr 8, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 8, 2025 | — |
| DEF 14A | Proxy statement | Apr 8, 2025 | May 21, 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 | — |
| 8-K/A |
Amended current report
Officer or director change
|
Mar 17, 2025 | Mar 10, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 11, 2025 | Mar 10, 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 |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2025 | Feb 26, 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 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| S-8 | Employee stock plan registration | Jan 10, 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 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, Results of operations, New debt, Regulation FD disclosure
|
Nov 7, 2024 | Nov 1, 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 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Acquisition or sale of assets, Results of operations
|
Aug 8, 2024 | Aug 8, 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 |
| 8-K |
Current report
Other events
|
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 | — |
| 8-K |
Current report
Shareholder vote results
|
May 13, 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 | May 10, 2024 | May 9, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Mar 27, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 27, 2024 | — |
| DEF 14A | Proxy statement | Mar 27, 2024 | May 9, 2024 |
| 8-K |
Current report
Material agreement
|
Mar 20, 2024 | Mar 19, 2024 |
| 424B5 | Prospectus supplement | Mar 20, 2024 | — |
| 8-K |
Current report
Other events
|
Mar 19, 2024 | Mar 19, 2024 |
| 8-K |
Current report
Other events
|
Mar 14, 2024 | Mar 14, 2024 |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2024 | Feb 28, 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 | — |
| 8-K |
Current report
Other events
|
Jan 30, 2024 | Jan 30, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2024 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 8, 2024 | Jan 8, 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 |
| 8-K |
Current report
Material agreement, New debt, Change to shareholder rights, Bylaw or fiscal year change
|
Dec 15, 2023 | Dec 14, 2023 |
| 4 | Insider transaction | Nov 28, 2023 | Nov 26, 2023 |
| 3 | Initial insider ownership | Nov 28, 2023 | Nov 26, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 28, 2023 | Nov 26, 2023 |
| 424B5 | Prospectus supplement | Nov 2, 2023 | — |
| 8-K |
Current report
Material agreement, Results of operations
|
Nov 2, 2023 | Nov 1, 2023 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 4 | Insider transaction | Oct 2, 2023 | Sep 29, 2023 |
| 4 | Insider transaction | Oct 2, 2023 | Sep 29, 2023 |
| 8-K |
Current report
Other events
|
Sep 29, 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 |
| 8-K |
Current report
Officer or director change
|
Sep 12, 2023 | Sep 11, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 24, 2023 |
| 8-K |
Current report
Other events
|
Aug 22, 2023 | Aug 21, 2023 |
| 4 | Insider transaction | Aug 3, 2023 | Aug 1, 2023 |
| 3 | Initial insider ownership | Aug 3, 2023 | Aug 1, 2023 |
| S-8 | Employee stock plan registration | Aug 3, 2023 | — |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 10-Q | Quarterly report | Aug 3, 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 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 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results, Other events
|
Jun 2, 2023 | May 31, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 11, 2023 |
| 144 | Notice of proposed sale | May 11, 2023 | — |
| 8-K |
Current report
Results of operations
|
May 11, 2023 | May 11, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | May 1, 2023 | May 1, 2023 |
| 144 | Notice of proposed sale | May 1, 2023 | — |
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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.