Dianthus Therapeutics, Inc. /DE/ SEC filings DNTH
Dianthus Therapeutics, Inc. /DE/ has 658 filings in SEC EDGAR's recent list, going back to Nov 23, 2016. Its latest annual report, Form ARS, was filed on Apr 9, 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 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 30, 2026 | — |
| 4 | Insider transaction | Sep 18, 2026 | Sep 17, 2026 |
| S-3ASR | Automatic shelf registration | Sep 18, 2026 | — |
| 144 | Notice of proposed sale | Sep 17, 2026 | — |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 4 | Insider transaction | Aug 19, 2026 | Aug 19, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 13, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 13, 2026 | — |
| 4 | Insider transaction | Aug 11, 2026 | Aug 10, 2026 |
| 4 | Insider transaction | Aug 11, 2026 | Aug 10, 2026 |
| 4 | Insider transaction | Aug 11, 2026 | Aug 7, 2026 |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 4 | Insider transaction | Aug 7, 2026 | Aug 7, 2026 |
| 144 | Notice of proposed sale | Aug 7, 2026 | — |
| 144 | Notice of proposed sale | Aug 7, 2026 | — |
| 144 | Notice of proposed sale | Aug 7, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 7, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 7, 2026 | — |
| 10-Q | Quarterly report | Aug 4, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2026 | Aug 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 144 | Notice of proposed sale | Jul 9, 2026 | — |
| 4 | Insider transaction | Jun 18, 2026 | Jun 17, 2026 |
| 144 | Notice of proposed sale | Jun 17, 2026 | — |
| 8-K |
Current report
Other events
|
Jun 12, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2026 | May 21, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 4 | Insider transaction | May 11, 2026 | May 8, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 27, 2026 | — |
| 4 | Insider transaction | Apr 10, 2026 | Apr 9, 2026 |
| 144 | Notice of proposed sale | Apr 9, 2026 | — |
| ARS | Annual report to shareholders | Apr 9, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 9, 2026 | — |
| DEF 14A | Proxy statement | Apr 9, 2026 | May 21, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| 144 | Notice of proposed sale | Mar 31, 2026 | — |
| 144 | Notice of proposed sale | Mar 31, 2026 | — |
| 4 | Insider transaction | Mar 26, 2026 | Mar 24, 2026 |
| 8-K |
Current report
Other events
|
Mar 26, 2026 | Mar 26, 2026 |
| 144 | Notice of proposed sale | Mar 24, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 12, 2026 |
| 144 | Notice of proposed sale | Mar 12, 2026 | — |
| 144 | Notice of proposed sale | Mar 12, 2026 | — |
| 144 | Notice of proposed sale | Mar 12, 2026 | — |
| 8-K |
Current report
Material agreement
|
Mar 12, 2026 | Mar 10, 2026 |
| 424B5 | Prospectus supplement | Mar 11, 2026 | — |
| S-3MEF | Filing | Mar 10, 2026 | — |
| 424B5 | Prospectus supplement | Mar 9, 2026 | — |
| S-8 | Employee stock plan registration | Mar 9, 2026 | — |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Mar 9, 2026 | Mar 9, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| EFFECT | Filing | Jan 30, 2026 | — |
| CORRESP | Letter to the SEC | Jan 29, 2026 | — |
| UPLOAD | Letter from the SEC | Jan 29, 2026 | — |
| S-3 | Shelf registration | Jan 28, 2026 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 4, 2025 |
| 144 | Notice of proposed sale | Dec 4, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 25, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 19, 2025 | — |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 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 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 144 | Notice of proposed sale | Nov 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 12, 2025 | — |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 8-K |
Current report
Other events
|
Nov 3, 2025 | Nov 3, 2025 |
| 8-K |
Current report
Material agreement, Results of operations, Other events
|
Oct 16, 2025 | Oct 16, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Sep 25, 2025 | Sep 23, 2025 |
| 4 | Insider transaction | Sep 25, 2025 | Sep 23, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 12, 2025 | — |
| 4 | Insider transaction | Sep 11, 2025 | Sep 9, 2025 |
| 8-K |
Current report
Material agreement
|
Sep 11, 2025 | Sep 9, 2025 |
| 424B5 | Prospectus supplement | Sep 11, 2025 | — |
| 144 | Notice of proposed sale | Sep 9, 2025 | — |
| 424B5 | Prospectus supplement | Sep 8, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 8, 2025 | Sep 8, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 22, 2025 |
| 3 | Initial insider ownership | May 22, 2025 | May 22, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 22, 2025 | May 22, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 24, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 17, 2025 | — |
| ARS | Annual report to shareholders | Apr 10, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 10, 2025 | — |
| DEF 14A | Proxy statement | Apr 10, 2025 | May 22, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 24, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 19, 2025 | — |
| S-8 | Employee stock plan registration | Mar 11, 2025 | — |
| 10-K | Annual report | Mar 11, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 11, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 4, 2025 |
| 3 | Initial insider ownership | Mar 5, 2025 | Mar 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2025 | Mar 4, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2025 | — |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 8-K |
Current report
Other events
|
Dec 12, 2024 | Dec 12, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 3, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 22, 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 8, 2024 | — |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| SC 13G | Ownership over 5% (passive) | Oct 24, 2024 | — |
| RW | Filing | Oct 21, 2024 | — |
| 424B5 | Prospectus supplement | Oct 11, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 11, 2024 | — |
| 424B3 | Prospectus | Oct 11, 2024 | — |
| EFFECT | Filing | Oct 9, 2024 | — |
| EFFECT | Filing | Oct 9, 2024 | — |
| CORRESP | Letter to the SEC | Oct 7, 2024 | — |
| CORRESP | Letter to the SEC | Oct 7, 2024 | — |
| UPLOAD | Letter from the SEC | Oct 7, 2024 | — |
| UPLOAD | Letter from the SEC | Oct 7, 2024 | — |
| 4 | Insider transaction | Oct 1, 2024 | Sep 27, 2024 |
| S-3 | Shelf registration | Oct 1, 2024 | — |
| S-3 | Shelf registration | Oct 1, 2024 | — |
| 4 | Insider transaction | Sep 18, 2024 | Sep 16, 2024 |
| 3 | Initial insider ownership | Sep 18, 2024 | Sep 16, 2024 |
| 424B3 | Prospectus | Sep 16, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Sep 16, 2024 | Sep 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 12, 2024 | — |
| S-8 | Employee stock plan registration | Aug 8, 2024 | — |
| 424B3 | Prospectus | Aug 8, 2024 | — |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 6, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
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
- DNTH (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- New York, NY
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1690585
- Former names
- Magenta Therapeutics, Inc. (until Sep 8, 2023)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.