Larimar Therapeutics, Inc. SEC filings LRMR
Larimar Therapeutics, Inc. has 696 filings in SEC EDGAR's recent list, going back to Aug 28, 2006. Its latest annual report, Form ARS, was filed on Apr 20, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 4, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 29, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 1, 2026 | Sep 29, 2026 |
| 3 | Initial insider ownership | Oct 1, 2026 | Sep 29, 2026 |
| 8-K |
Current report
Officer or director change
|
Sep 29, 2026 | Sep 29, 2026 |
| 10-Q | Quarterly report | Aug 4, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
Aug 4, 2026 | Aug 4, 2026 |
| 4 | Insider transaction | Jul 8, 2026 | Jul 6, 2026 |
| 8-K |
Current report
Other events
|
Jun 29, 2026 | Jun 29, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 20, 2026 | May 19, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 19, 2026 | May 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 10-Q | Quarterly report | May 14, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
May 14, 2026 | May 14, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2026 | — |
| ARS | Annual report to shareholders | Apr 20, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 20, 2026 | Apr 17, 2026 |
| PRE 14A | Preliminary proxy statement | Apr 10, 2026 | May 19, 2026 |
| S-8 | Employee stock plan registration | Mar 19, 2026 | — |
| 10-K | Annual report | Mar 19, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 19, 2026 | Mar 19, 2026 |
| 8-K |
Current report
Other events
|
Mar 9, 2026 | Mar 9, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 2, 2026 | — |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 8-K |
Current report
Material agreement
|
Feb 27, 2026 | Feb 25, 2026 |
| 424B5 | Prospectus supplement | Feb 26, 2026 | — |
| 424B5 | Prospectus supplement | Feb 25, 2026 | — |
| 8-K |
Current report
Other events
|
Feb 24, 2026 | Feb 24, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2026 | — |
| 4 | Insider transaction | Jan 27, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 27, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 27, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 27, 2026 | Jan 26, 2026 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change
|
Jan 22, 2026 | Jan 21, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
Jan 12, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change
|
Dec 17, 2025 | Dec 16, 2025 |
| 8-K |
Current report
Other events
|
Nov 10, 2025 | Nov 10, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 6, 2025 | — |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| 8-K |
Current report
Other events
|
Oct 14, 2025 | Oct 14, 2025 |
| 8-K |
Current report
Other events
|
Sep 29, 2025 | Sep 29, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 29, 2025 | — |
| 10-Q | Quarterly report | Aug 14, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 8-K |
Current report
Results of operations, Other events
|
Aug 14, 2025 | Aug 14, 2025 |
| 4 | Insider transaction | Aug 4, 2025 | Jul 31, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 31, 2025 | — |
| 8-K |
Current report
Material agreement
|
Jul 31, 2025 | Jul 29, 2025 |
| 424B5 | Prospectus supplement | Jul 31, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jul 29, 2025 | Jul 29, 2025 |
| 424B5 | Prospectus supplement | Jul 29, 2025 | — |
| 8-K |
Current report
Other events
|
Jun 23, 2025 | Jun 23, 2025 |
| 8-K |
Current report
Other events
|
Jun 23, 2025 | Jun 23, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 17, 2025 | — |
| 4 | Insider transaction | May 15, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 13, 2025 | May 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 13, 2025 | — |
| 8-K |
Current report
Other events
|
May 5, 2025 | May 5, 2025 |
| 10-Q | Quarterly report | Apr 30, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2025 | Apr 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 22, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 16, 2025 | — |
| ARS | Annual report to shareholders | Apr 11, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 11, 2025 | Apr 9, 2025 |
| S-8 | Employee stock plan registration | Mar 24, 2025 | — |
| 10-K | Annual report | Mar 24, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Mar 24, 2025 | Mar 24, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 4, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Jan 27, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 8-K |
Current report
Other events
|
Jan 10, 2025 | Jan 10, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 8, 2025 | — |
| 8-K |
Current report
Other events
|
Dec 16, 2024 | Dec 16, 2024 |
| 8-K |
Current report
Other events
|
Nov 18, 2024 | Nov 18, 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/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 6, 2024 | — |
| 10-Q | Quarterly report | Oct 30, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 30, 2024 | Oct 30, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
Aug 7, 2024 | Aug 7, 2024 |
| 8-K |
Current report
Other events
|
Jun 10, 2024 | Jun 10, 2024 |
| 4 | Insider transaction | Jun 3, 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 |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| 4 | Insider transaction | May 31, 2024 | Feb 16, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 31, 2024 | May 29, 2024 |
| 8-K |
Current report
Other events
|
May 30, 2024 | May 30, 2024 |
| EFFECT | Filing | May 24, 2024 | — |
| CORRESP | Letter to the SEC | May 22, 2024 | — |
| 8-K |
Current report
Other events
|
May 20, 2024 | May 20, 2024 |
| UPLOAD | Letter from the SEC | May 16, 2024 | — |
| S-3 | Shelf registration | May 9, 2024 | — |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Other events
|
May 9, 2024 | May 9, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 29, 2024 | May 29, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 12, 2024 | May 29, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 15, 2024 | — |
| S-8 | Employee stock plan registration | Mar 14, 2024 | — |
| S-8 | Employee stock plan registration | Mar 14, 2024 | — |
| 10-K | Annual report | Mar 14, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 14, 2024 | Mar 14, 2024 |
| 8-K |
Current report
Other events
|
Mar 11, 2024 | Mar 11, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 26, 2024 | — |
| 8-K |
Current report
Material agreement
|
Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 16, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 15, 2024 | — |
| 4 | Insider transaction | Feb 15, 2024 | Feb 14, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| 424B5 | Prospectus supplement | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| 8-K |
Current report
Agreement ended
|
Feb 14, 2024 | Feb 13, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 424B5 | Prospectus supplement | Feb 13, 2024 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 12, 2024 | Feb 12, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 17, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 17, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 17, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 17, 2024 |
| 4 | Insider transaction | Dec 8, 2023 | Dec 7, 2023 |
| 10-Q | Quarterly report | Nov 14, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 14, 2023 | Nov 14, 2023 |
| 4 | Insider transaction | Oct 5, 2023 | Oct 3, 2023 |
| 3 | Initial insider ownership | Oct 5, 2023 | Oct 3, 2023 |
| 8-K |
Current report
Officer or director change
|
Oct 3, 2023 | Oct 3, 2023 |
| SC 13G | Ownership over 5% (passive) | Aug 18, 2023 | — |
| 8-K |
Current report
Other events
|
Aug 14, 2023 | Aug 14, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Other events
|
Jul 25, 2023 | Jul 25, 2023 |
| 144 | Notice of proposed sale | Jul 24, 2023 | — |
| 4 | Insider transaction | Jul 18, 2023 | Jul 17, 2023 |
| 3 | Initial insider ownership | Jul 18, 2023 | Jul 17, 2023 |
| 8-K |
Current report
Other events
|
Jul 17, 2023 | Jul 17, 2023 |
| 8-K |
Current report
Other events
|
Jun 1, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 17, 2023 |
| 10-Q | Quarterly report | May 15, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
May 15, 2023 | May 15, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 12, 2023 | May 9, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 9, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 9, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 9, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 9, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 9, 2023 |
| ARS | Annual report to shareholders | Apr 11, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Apr 11, 2023 | May 9, 2023 |
| 8-K |
Current report
Officer or director change
|
Apr 6, 2023 | Apr 3, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 17, 2023 | — |
| S-8 | Employee stock plan registration | Mar 14, 2023 | — |
| S-8 | Employee stock plan registration | Mar 14, 2023 | — |
| 10-K | Annual report | Mar 14, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Mar 14, 2023 | Mar 14, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| 4 | Insider transaction | Feb 9, 2023 | Feb 7, 2023 |
| 3 | Initial insider ownership | Feb 9, 2023 | Feb 7, 2023 |
| 8-K |
Current report
Other events
|
Feb 7, 2023 | Feb 7, 2023 |
| 4 | Insider transaction | Feb 2, 2023 | Jan 31, 2023 |
| 4 | Insider transaction | Feb 2, 2023 | Jan 31, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2023 | — |
| 8-K |
Current report
Other events
|
Jan 9, 2023 | Jan 9, 2023 |
| EFFECT | Filing | Nov 21, 2022 | — |
| CORRESP | Letter to the SEC | Nov 18, 2022 | — |
| UPLOAD | Letter from the SEC | Nov 16, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2022 | — |
| S-3 | Shelf registration | Nov 10, 2022 | — |
| 10-Q | Quarterly report | Nov 10, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 10, 2022 | Nov 10, 2022 |
| 8-K |
Current report
Other events
|
Oct 20, 2022 | Oct 20, 2022 |
| 4 | Insider transaction | Sep 20, 2022 | Sep 16, 2022 |
| 3 | Initial insider ownership | Sep 20, 2022 | Sep 16, 2022 |
| 4 | Insider transaction | Sep 20, 2022 | Sep 16, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 16, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 16, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 16, 2022 | — |
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
- LRMR (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Bala Cynwyd, PA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1374690
- Former names
- ZAFGEN, INC. (until May 19, 2020); ZAFGEN INC (until Nov 3, 2008)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.