Fulcrum Therapeutics, Inc. SEC filings FULC
Fulcrum Therapeutics, Inc. has 520 filings in SEC EDGAR's recent list, going back to Jul 25, 2016. Its latest annual report, Form ARS, was filed on Apr 30, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 30, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 17, 2026 (material agreement, unregistered share sale, change in control, officer or director change, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| EFFECT | Filing | Nov 4, 2026 | — |
| 424B3 | Prospectus | Nov 4, 2026 | — |
| S-4/A | Filing | Nov 3, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 28, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 27, 2026 | — |
| S-4/A | Filing | Oct 20, 2026 | — |
| S-4/A | Filing | Oct 8, 2026 | — |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| S-4 | Registration for a merger or exchange | Sep 2, 2026 | — |
| 425 | Filing | Aug 17, 2026 | — |
| 425 | Filing | Aug 17, 2026 | — |
| 425 | Filing | Aug 17, 2026 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change in control, Officer or director change, Regulation FD disclosure
|
Aug 17, 2026 | Aug 16, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Aug 10, 2026 | Aug 7, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 3, 2026 | — |
| 10-Q | Quarterly report | Jul 30, 2026 | Jun 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 20, 2026 | Jul 16, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 15, 2026 | — |
| 4 | Insider transaction | Jul 15, 2026 | Jul 13, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 13, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 144 | Notice of proposed sale | Jun 26, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 25, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 25, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 25, 2026 | Jun 24, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 11, 2026 | Jun 5, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 10, 2026 | — |
| 8-K |
Current report
Exit or restructuring costs, Other events
|
Jun 4, 2026 | May 31, 2026 |
| 8-K |
Current report
Other events
|
Jun 1, 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 | May 1, 2026 | Apr 23, 2026 |
| 3 | Initial insider ownership | May 1, 2026 | Apr 23, 2026 |
| DEFA14A | Additional proxy material | Apr 30, 2026 | — |
| ARS | Annual report to shareholders | Apr 30, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 30, 2026 | Jun 24, 2026 |
| 10-Q | Quarterly report | Apr 27, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Agreement ended, Results of operations, Officer or director change
|
Apr 27, 2026 | Apr 23, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| S-8 | Employee stock plan registration | Feb 24, 2026 | — |
| 10-K | Annual report | Feb 24, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2026 | Feb 24, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 4/A | Filing | Feb 4, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 144 | Notice of proposed sale | Dec 15, 2025 | — |
| 8-K |
Current report
Material agreement, Other events
|
Dec 11, 2025 | Dec 10, 2025 |
| 424B5 | Prospectus supplement | Dec 11, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 10, 2025 | — |
| 4 | Insider transaction | Dec 10, 2025 | Dec 8, 2025 |
| FWP | Free writing prospectus | Dec 10, 2025 | — |
| 144 | Notice of proposed sale | Dec 8, 2025 | — |
| 424B5 | Prospectus supplement | Dec 8, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 8, 2025 | Dec 8, 2025 |
| 4 | Insider transaction | Nov 21, 2025 | Nov 19, 2025 |
| 144 | Notice of proposed sale | Nov 19, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| 10-Q | Quarterly report | Oct 29, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2025 | Oct 29, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 17, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 28, 2025 | Aug 28, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Jul 29, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 29, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | Jun 30, 2025 | Jun 26, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 27, 2025 | Jun 26, 2025 |
| 4 | Insider transaction | May 9, 2025 | May 8, 2025 |
| DEFR14A | Filing | May 7, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 2, 2025 | — |
| 10-Q | Quarterly report | May 1, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| ARS | Annual report to shareholders | Apr 30, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 30, 2025 | — |
| DEF 14A | Proxy statement | Apr 30, 2025 | Apr 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| 8-K |
Current report
Agreement ended
|
Mar 4, 2025 | Feb 26, 2025 |
| S-8 | Employee stock plan registration | Feb 25, 2025 | — |
| 10-K | Annual report | Feb 25, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2025 | Feb 25, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 12, 2025 | — |
| 4 | Insider transaction | Jan 28, 2025 | Jan 24, 2025 |
| 4 | Insider transaction | Jan 28, 2025 | Jan 24, 2025 |
| 4 | Insider transaction | Jan 28, 2025 | Jan 24, 2025 |
| 4 | Insider transaction | Jan 28, 2025 | Jan 24, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 6, 2025 | — |
| 8-K |
Current report
Agreement ended
|
Dec 23, 2024 | Dec 18, 2024 |
| SC 13G | Ownership over 5% (passive) | Dec 6, 2024 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 4 | Insider transaction | Nov 14, 2024 | Nov 12, 2024 |
| 3 | Initial insider ownership | Nov 14, 2024 | Nov 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2024 | Nov 13, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 12, 2024 | Nov 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 21, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 7, 2024 | — |
| 8-K |
Current report
Exit or restructuring costs
|
Sep 24, 2024 | Sep 24, 2024 |
| 3 | Initial insider ownership | Sep 23, 2024 | Sep 12, 2024 |
| SC 13G | Ownership over 5% (passive) | Sep 20, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 16, 2024 | — |
| 8-K |
Current report
Other events
|
Sep 12, 2024 | Sep 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 23, 2024 | — |
| 4 | Insider transaction | Aug 23, 2024 | Aug 21, 2024 |
| 8-K |
Current report
Unregistered share sale
|
Aug 22, 2024 | Aug 21, 2024 |
| S-8 | Employee stock plan registration | Jul 31, 2024 | — |
| 10-Q | Quarterly report | Jul 31, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| 4 | Insider transaction | Jul 8, 2024 | Jul 3, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 3 | Initial insider ownership | Jun 18, 2024 | Jun 17, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2024 | Jun 17, 2024 |
| 10-Q | Quarterly report | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Material agreement, Results of operations
|
May 13, 2024 | May 11, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
| EFFECT | Filing | Apr 25, 2024 | — |
| CORRESP | Letter to the SEC | Apr 24, 2024 | — |
| ARS | Annual report to shareholders | Apr 19, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 19, 2024 | — |
| DEF 14A | Proxy statement | Apr 19, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Mar 20, 2024 | Mar 18, 2024 |
| 3 | Initial insider ownership | Mar 20, 2024 | Mar 18, 2024 |
| 4 | Insider transaction | Mar 8, 2024 | Mar 8, 2024 |
| 144 | Notice of proposed sale | Mar 8, 2024 | — |
| 4 | Insider transaction | Mar 5, 2024 | Mar 4, 2024 |
| UPLOAD | Letter from the SEC | Mar 1, 2024 | — |
| S-8 | Employee stock plan registration | Feb 27, 2024 | — |
| S-3 | Shelf registration | Feb 27, 2024 | — |
| 10-K | Annual report | Feb 27, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2024 | Feb 27, 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/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2024 | — |
| 4 | Insider transaction | Jan 30, 2024 | Jan 26, 2024 |
| 4 | Insider transaction | Jan 30, 2024 | Jan 26, 2024 |
| 4 | Insider transaction | Jan 30, 2024 | Jan 26, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 17, 2024 |
| 10-Q | Quarterly report | Nov 7, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2023 | Nov 7, 2023 |
| 8-K |
Current report
Officer or director change
|
Oct 2, 2023 | Sep 28, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 22, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Aug 9, 2023 | Aug 7, 2023 |
| 3 | Initial insider ownership | Aug 9, 2023 | Aug 7, 2023 |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Aug 3, 2023 | Aug 2, 2023 |
| 8-K |
Current report
Material agreement
|
Jul 10, 2023 | Jul 5, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 7, 2023 | — |
| 3 | Initial insider ownership | Jul 3, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 10-K/A | Amended annual report | Jun 26, 2023 | Dec 31, 2022 |
| 10-K/A | Amended annual report | Jun 26, 2023 | Dec 31, 2021 |
| 10-K/A | Amended annual report | Jun 23, 2023 | Dec 31, 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
- FULC (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Cambridge, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1680581
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.