Synlogic, Inc. SEC filings SYBX
Synlogic, Inc. has 627 filings in SEC EDGAR's recent list, going back to Aug 23, 2011. Its latest annual report, Form 10-K, was filed on Mar 12, 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 Jul 29, 2026 (material agreement, change to shareholder rights, change in control, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 425 | Filing | Nov 5, 2026 | — |
| 425 | Filing | Nov 2, 2026 | — |
| 4 | Insider transaction | Aug 14, 2026 | Jul 27, 2026 |
| 10-Q | Quarterly report | Aug 11, 2026 | Jun 30, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 29, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 29, 2026 | — |
| 425 | Filing | Jul 29, 2026 | — |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Change in control, Regulation FD disclosure
|
Jul 29, 2026 | Jul 27, 2026 |
| 25-NSE | Delisting notice | May 18, 2026 | — |
| 10-Q | Quarterly report | May 14, 2026 | Mar 31, 2026 |
| 10-K/A | Amended annual report | Apr 30, 2026 | Dec 31, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 6, 2026 | — |
| 10-K | Annual report | Mar 12, 2026 | Dec 31, 2025 |
| 8-K/A |
Amended current report
Listing notice, Other events
|
Jan 29, 2026 | Jan 16, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 23, 2026 | — |
| 8-K |
Current report
Listing notice
|
Jan 20, 2026 | Jan 16, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Dec 16, 2025 | Dec 15, 2025 |
| 8-K |
Current report
Listing notice
|
Nov 26, 2025 | Nov 21, 2025 |
| 10-Q | Quarterly report | Nov 13, 2025 | Sep 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| ARS | Annual report to shareholders | Nov 12, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Nov 12, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Oct 31, 2025 | Oct 29, 2025 |
| EFFECT | Filing | Aug 20, 2025 | — |
| CORRESP | Letter to the SEC | Aug 18, 2025 | — |
| S-3/A | Filing | Aug 15, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 13, 2025 | — |
| S-3 | Shelf registration | Aug 8, 2025 | — |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 10-K/A | Amended annual report | Apr 30, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Apr 29, 2025 | Apr 26, 2025 |
| 4 | Insider transaction | Apr 29, 2025 | Apr 26, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 2, 2025 |
| 10-K | Annual report | Mar 6, 2025 | Dec 31, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 25, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Feb 21, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 14, 2025 | Jan 10, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2024 | Dec 17, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Dec 5, 2024 | Dec 4, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| S-8 | Employee stock plan registration | Nov 12, 2024 | — |
| S-8 | Employee stock plan registration | Nov 12, 2024 | — |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 12, 2024 |
| DEF 14A | Proxy statement | Nov 6, 2024 | Dec 4, 2024 |
| ARS | Annual report to shareholders | Nov 5, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Oct 30, 2024 | Oct 29, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | May 16, 2024 | — |
| 10-Q | Quarterly report | May 14, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 14, 2024 | May 14, 2024 |
| 10-K/A | Amended annual report | Apr 29, 2024 | Dec 31, 2023 |
| 144 | Notice of proposed sale | Apr 22, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Apr 18, 2024 | — |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 3 | Initial insider ownership | Mar 21, 2024 | Mar 18, 2024 |
| 4 | Insider transaction | Mar 21, 2024 | Mar 19, 2024 |
| 3 | Initial insider ownership | Mar 21, 2024 | Mar 19, 2024 |
| 8-K |
Current report
Officer or director change
|
Mar 21, 2024 | Mar 19, 2024 |
| 144 | Notice of proposed sale | Mar 21, 2024 | — |
| 10-K | Annual report | Mar 19, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 19, 2024 | Mar 19, 2024 |
| 8-K |
Current report
Officer or director change
|
Feb 22, 2024 | Feb 17, 2024 |
| 8-A12B | Filing | Feb 20, 2024 | — |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Feb 20, 2024 | Feb 20, 2024 |
| 3 | Initial insider ownership | Feb 16, 2024 | Feb 9, 2024 |
| SC 13D | Ownership over 5% (active) | Feb 16, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 8-K |
Current report
Results of operations, Exit or restructuring costs, Officer or director change, Other events
|
Feb 12, 2024 | Feb 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 8-K |
Current report
Officer or director change
|
Dec 29, 2023 | Dec 29, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 17, 2023 | Nov 17, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 15, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Nov 14, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Nov 14, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Nov 14, 2023 | Nov 10, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Other events
|
Nov 7, 2023 | Nov 7, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 13, 2023 | — |
| 3 | Initial insider ownership | Oct 6, 2023 | Oct 3, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 4, 2023 | — |
| 424B4 | Prospectus | Oct 2, 2023 | — |
| 8-K |
Current report
Material agreement, Other events
|
Sep 29, 2023 | Sep 28, 2023 |
| EFFECT | Filing | Sep 28, 2023 | — |
| S-1MEF | Filing | Sep 28, 2023 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Sep 28, 2023 | Sep 27, 2023 |
| S-1/A | Amended registration statement | Sep 28, 2023 | — |
| S-1/A | Amended registration statement | Sep 27, 2023 | — |
| CORRESP | Letter to the SEC | Sep 26, 2023 | — |
| CORRESP | Letter to the SEC | Sep 26, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 25, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
Sep 22, 2023 | Sep 21, 2023 |
| CORRESP | Letter to the SEC | Sep 20, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 15, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 11, 2023 | — |
| S-1 | Registration statement | Sep 8, 2023 | — |
| DEF 14A | Proxy statement | Sep 1, 2023 | Sep 21, 2023 |
| PRE 14A | Preliminary proxy statement | Aug 21, 2023 | Sep 21, 2023 |
| 8-K |
Current report
Material agreement
|
Aug 16, 2023 | Aug 16, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 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 |
| 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 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 15, 2023 | Jun 15, 2023 |
| 8-K |
Current report
Exit or restructuring costs, Other events
|
Jun 5, 2023 | May 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 11, 2023 | May 11, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| ARS | Annual report to shareholders | May 1, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | May 1, 2023 | — |
| DEF 14A | Proxy statement | May 1, 2023 | Jun 15, 2023 |
| PRE 14A | Preliminary proxy statement | Apr 21, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 424B5 | Prospectus supplement | Apr 4, 2023 | — |
| S-8 | Employee stock plan registration | Mar 29, 2023 | — |
| S-8 | Employee stock plan registration | Mar 29, 2023 | — |
| 8-K |
Current report
Results of operations
|
Mar 29, 2023 | Mar 29, 2023 |
| 10-K | Annual report | Mar 29, 2023 | Dec 31, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Jan 20, 2023 | — |
| 8-K |
Current report
Other events
|
Jan 19, 2023 | Jan 19, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 8-K |
Current report
Other events
|
Dec 15, 2022 | Dec 15, 2022 |
| 8-K |
Current report
Listing notice
|
Dec 9, 2022 | Dec 6, 2022 |
| 8-K |
Current report
Exit or restructuring costs, Other events
|
Nov 30, 2022 | Nov 28, 2022 |
| 8-K |
Current report
Material agreement
|
Nov 23, 2022 | Nov 22, 2022 |
| 10-Q | Quarterly report | Nov 10, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2022 | Nov 10, 2022 |
| 8-K |
Current report
Other events
|
Oct 18, 2022 | Oct 18, 2022 |
| 8-K |
Current report
Other events
|
Sep 6, 2022 | Aug 26, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2022 | Aug 11, 2022 |
| 10-Q | Quarterly report | Aug 11, 2022 | Jun 30, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | May 25, 2022 | May 24, 2022 |
| 8-K |
Current report
Results of operations
|
May 12, 2022 | May 12, 2022 |
| 10-Q | Quarterly report | May 12, 2022 | Mar 31, 2022 |
| DEFA14A | Additional proxy material | Apr 27, 2022 | — |
| DEF 14A | Proxy statement | Apr 27, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Apr 6, 2022 | Apr 4, 2022 |
| 4 | Insider transaction | Apr 6, 2022 | Apr 4, 2022 |
| S-8 | Employee stock plan registration | Mar 17, 2022 | — |
| S-8 | Employee stock plan registration | Mar 17, 2022 | — |
| 8-K |
Current report
Results of operations
|
Mar 17, 2022 | Mar 17, 2022 |
| 10-K | Annual report | Mar 17, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Mar 3, 2022 | Mar 3, 2022 |
| 3 | Initial insider ownership | Mar 3, 2022 | Mar 3, 2022 |
| 8-K |
Current report
Officer or director change, Other events
|
Mar 3, 2022 | Mar 3, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| 4 | Insider transaction | Feb 8, 2022 | Feb 4, 2022 |
| 4 | Insider transaction | Feb 8, 2022 | Feb 4, 2022 |
| 4 | Insider transaction | Feb 1, 2022 | Dec 6, 2021 |
| 8-K |
Current report
Material agreement
|
Jan 24, 2022 | Jan 21, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2021 | Nov 10, 2021 |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Other events
|
Nov 9, 2021 | Nov 9, 2021 |
| SC 13G | Ownership over 5% (passive) | Oct 1, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Sep 29, 2021 | — |
| 8-K |
Current report
Material agreement, Other events
|
Sep 23, 2021 | Sep 22, 2021 |
| 424B5 | Prospectus supplement | Sep 23, 2021 | — |
| 424B5 | Prospectus supplement | Sep 22, 2021 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 20, 2021 | Sep 20, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2021 | Aug 12, 2021 |
| 10-Q | Quarterly report | Aug 12, 2021 | Jun 30, 2021 |
| EFFECT | Filing | Jul 30, 2021 | — |
| 8-K |
Current report
Officer or director change
|
Jul 30, 2021 | Jul 29, 2021 |
| CORRESP | Letter to the SEC | Jul 29, 2021 | — |
| UPLOAD | Letter from the SEC | Jul 28, 2021 | — |
| S-3 | Shelf registration | Jul 23, 2021 | — |
| 8-K |
Current report
Other events
|
Jul 15, 2021 | Jul 15, 2021 |
| 8-K |
Current report
Material agreement, Other events
|
Jun 17, 2021 | Jun 16, 2021 |
| 4 | Insider transaction | Jun 14, 2021 | Jun 10, 2021 |
| 4 | Insider transaction | Jun 14, 2021 | Jun 10, 2021 |
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
- SYBX (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Winchester, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1527599
- Former names
- Mirna Therapeutics, Inc. (until Aug 25, 2017)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.