Form
SCHEDULE 13G/A
Passive or exempt beneficial ownership filing.
WELLINGTON MANAGEMENT GROUP LLP - 31 Mar 2026 SCHEDULE 13G/A Report for Dianthus Therapeutics, Inc. Common Stock (DNTH)
- Filing manager
- WELLINGTON MANAGEMENT GROUP LLP
- Reporting owner
- Wellington Management Group LLP
- Beneficially owned shares
- 2,595,783 shares
- Class ownership
- 4.8%
- Large-stake signal
-
Ownership
4.8%
Beneficial ownership of this reported class.
Shares
2,595,783 shares
Shares beneficially owned as disclosed.
Event date
31 Mar 2026
Date tied to the ownership event or amendment.
Accepted by SEC
15 May 2026
EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Symbol
- DNTH
- Shares outstanding
- 54,078,813 shares
- Form type
- SCHEDULE 13G/A
- Accepted by SEC
- 15 May 2026, 07:24:39 UTC
- Event date
- 31 Mar 2026
- Previous filing
- 12 Nov 2025
- SEC filing
- View on sec.gov
Ownership signal
2 signals
Subject security
2 source fields
SEC evidence
5 source fields
Key filing fact
WELLINGTON MANAGEMENT GROUP LLP disclosed 4.8% ownership in Dianthus Therapeutics, Inc. Common Stock (DNTH) on 31 Mar 2026.
Key facts
- WELLINGTON MANAGEMENT GROUP LLP filed SCHEDULE 13G/A for Dianthus Therapeutics, Inc. Common Stock (DNTH).
- Disclosed ownership: 4.8%.
- Date of event: 31 Mar 2026.
Change
- Previous schedule filing date: 12 Nov 2025.
- Current filing was accepted on 15 May 2026, 07:24.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (3)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Wellington Management Group LLP | 4.8% | 2,595,783 | 0 | 2,358,243 | Matthew Revell | Compliance Manager | |
| Wellington Group Holdings LLP | 4.8% | 2,595,783 | 0 | 2,358,243 | Matthew Revell | Compliance Manager | |
| Wellington Investment Advisors Holdings LLP | 4.8% | 2,595,783 | 0 | 2,358,243 | Matthew Revell | Compliance Manager |
CIK / CUSIP context first