Dyne Therapeutics, Inc. SEC filings DYN
Dyne Therapeutics, Inc. has 796 filings in SEC EDGAR's recent list, going back to Jul 23, 2020. Its latest annual report, Form ARS, was filed on Apr 23, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 22, 2026 | Oct 20, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 2, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 29, 2026 | Sep 29, 2026 |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| 4 | Insider transaction | Sep 8, 2026 | Sep 4, 2026 |
| 4 | Insider transaction | Sep 8, 2026 | Sep 4, 2026 |
| 4 | Insider transaction | Sep 8, 2026 | Sep 8, 2026 |
| 144 | Notice of proposed sale | Sep 4, 2026 | — |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| 4 | Insider transaction | Jul 29, 2026 | Jul 27, 2026 |
| 10-Q | Quarterly report | Jul 29, 2026 | Jun 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 28, 2026 | — |
| 144 | Notice of proposed sale | Jul 27, 2026 | — |
| 424B5 | Prospectus supplement | Jul 22, 2026 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jul 22, 2026 | Jul 21, 2026 |
| 424B5 | Prospectus supplement | Jul 21, 2026 | — |
| 8-K |
Current report
Other events
|
Jul 20, 2026 | Jul 20, 2026 |
| 4 | Insider transaction | Jul 8, 2026 | Jul 6, 2026 |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 144 | Notice of proposed sale | Jul 6, 2026 | — |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 144 | Notice of proposed sale | Jun 29, 2026 | — |
| 144 | Notice of proposed sale | Jun 29, 2026 | — |
| 144 | Notice of proposed sale | Jun 29, 2026 | — |
| 144 | Notice of proposed sale | Jun 26, 2026 | — |
| 144 | Notice of proposed sale | Jun 26, 2026 | — |
| 144 | Notice of proposed sale | Jun 26, 2026 | — |
| 4 | Insider transaction | Jun 26, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 26, 2026 | Jun 23, 2026 |
| 144 | Notice of proposed sale | Jun 25, 2026 | — |
| 144 | Notice of proposed sale | Jun 25, 2026 | — |
| 144 | Notice of proposed sale | Jun 25, 2026 | — |
| 144 | Notice of proposed sale | Jun 25, 2026 | — |
| 144 | Notice of proposed sale | Jun 24, 2026 | — |
| 144 | Notice of proposed sale | Jun 24, 2026 | — |
| 144 | Notice of proposed sale | Jun 24, 2026 | — |
| 4 | Insider transaction | Jun 24, 2026 | Jun 22, 2026 |
| 144 | Notice of proposed sale | Jun 23, 2026 | — |
| 144 | Notice of proposed sale | Jun 23, 2026 | — |
| 144 | Notice of proposed sale | Jun 23, 2026 | — |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 3 | Initial insider ownership | Jun 23, 2026 | Jun 22, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 22, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 144 | Notice of proposed sale | Jun 17, 2026 | — |
| 8-K |
Current report
Material agreement, New debt
|
Jun 17, 2026 | Jun 16, 2026 |
| 144 | Notice of proposed sale | Jun 16, 2026 | — |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 9, 2026 | Jun 5, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 3, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 26, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 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 14, 2026 | May 13, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 13, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 13, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 13, 2026 |
| 144 | Notice of proposed sale | May 13, 2026 | — |
| 144 | Notice of proposed sale | May 13, 2026 | — |
| 8-K |
Current report
Results of operations
|
May 11, 2026 | May 11, 2026 |
| 10-Q | Quarterly report | May 11, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| 144 | Notice of proposed sale | May 6, 2026 | — |
| 144 | Notice of proposed sale | May 6, 2026 | — |
| 144 | Notice of proposed sale | May 6, 2026 | — |
| 144 | Notice of proposed sale | May 6, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 6, 2026 | — |
| 144 | Notice of proposed sale | May 5, 2026 | — |
| 144 | Notice of proposed sale | May 5, 2026 | — |
| 144 | Notice of proposed sale | May 5, 2026 | — |
| 144 | Notice of proposed sale | May 5, 2026 | — |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| 144 | Notice of proposed sale | May 4, 2026 | — |
| 4 | Insider transaction | Apr 30, 2026 | Apr 28, 2026 |
| 4 | Insider transaction | Apr 28, 2026 | Apr 24, 2026 |
| 144 | Notice of proposed sale | Apr 28, 2026 | — |
| 144 | Notice of proposed sale | Apr 28, 2026 | — |
| 144 | Notice of proposed sale | Apr 28, 2026 | — |
| 144 | Notice of proposed sale | Apr 28, 2026 | — |
| 4 | Insider transaction | Apr 27, 2026 | Apr 23, 2026 |
| 144 | Notice of proposed sale | Apr 27, 2026 | — |
| 144 | Notice of proposed sale | Apr 27, 2026 | — |
| 144 | Notice of proposed sale | Apr 27, 2026 | — |
| 144 | Notice of proposed sale | Apr 27, 2026 | — |
| 144 | Notice of proposed sale | Apr 24, 2026 | — |
| 144 | Notice of proposed sale | Apr 24, 2026 | — |
| 144 | Notice of proposed sale | Apr 24, 2026 | — |
| 144 | Notice of proposed sale | Apr 24, 2026 | — |
| 144 | Notice of proposed sale | Apr 23, 2026 | — |
| 144 | Notice of proposed sale | Apr 23, 2026 | — |
| 144 | Notice of proposed sale | Apr 23, 2026 | — |
| 144 | Notice of proposed sale | Apr 23, 2026 | — |
| 4 | Insider transaction | Apr 23, 2026 | Apr 21, 2026 |
| ARS | Annual report to shareholders | Apr 23, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 23, 2026 | — |
| DEF 14A | Proxy statement | Apr 23, 2026 | Apr 22, 2026 |
| 4 | Insider transaction | Apr 22, 2026 | Apr 20, 2026 |
| 144 | Notice of proposed sale | Apr 22, 2026 | — |
| 144 | Notice of proposed sale | Apr 22, 2026 | — |
| 144 | Notice of proposed sale | Apr 22, 2026 | — |
| 144 | Notice of proposed sale | Apr 22, 2026 | — |
| 144 | Notice of proposed sale | Apr 21, 2026 | — |
| 144 | Notice of proposed sale | Apr 21, 2026 | — |
| 144 | Notice of proposed sale | Apr 21, 2026 | — |
| 144 | Notice of proposed sale | Apr 21, 2026 | — |
| 4 | Insider transaction | Apr 21, 2026 | Apr 17, 2026 |
| 144 | Notice of proposed sale | Apr 20, 2026 | — |
| 144 | Notice of proposed sale | Apr 20, 2026 | — |
| 144 | Notice of proposed sale | Apr 20, 2026 | — |
| 144 | Notice of proposed sale | Apr 20, 2026 | — |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| PRE 14A | Preliminary proxy statement | Apr 9, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 30, 2026 |
| 144 | Notice of proposed sale | Apr 1, 2026 | — |
| S-8 | Employee stock plan registration | Mar 27, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 13, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 144 | Notice of proposed sale | Mar 9, 2026 | — |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 6, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| S-8 | Employee stock plan registration | Mar 2, 2026 | — |
| 8-K |
Current report
Results of operations
|
Mar 2, 2026 | Mar 2, 2026 |
| 10-K | Annual report | Mar 2, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 12, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 8, 2026 | — |
| 4 | Insider transaction | Dec 23, 2025 | Dec 22, 2025 |
| 3 | Initial insider ownership | Dec 23, 2025 | Dec 22, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2025 | Dec 22, 2025 |
| 424B5 | Prospectus supplement | Dec 10, 2025 | — |
| 8-K |
Current report
Material agreement, Other events
|
Dec 10, 2025 | Dec 9, 2025 |
| 424B5 | Prospectus supplement | Dec 8, 2025 | — |
| 8-K |
Current report
New debt
|
Dec 8, 2025 | Dec 8, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 8, 2025 | Dec 8, 2025 |
| 144 | Notice of proposed sale | Dec 5, 2025 | — |
| 144 | Notice of proposed sale | Dec 5, 2025 | — |
| 4 | Insider transaction | Dec 5, 2025 | Dec 5, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 5, 2025 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 3 | Initial insider ownership | Oct 2, 2025 | Oct 1, 2025 |
| 8-K |
Current report
Officer or director change
|
Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Sep 9, 2025 | Sep 5, 2025 |
| 4 | Insider transaction | Sep 8, 2025 | Sep 4, 2025 |
| 4 | Insider transaction | Sep 8, 2025 | Sep 4, 2025 |
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- DYN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Waltham, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1818794
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.