Wellington Management Group LLP Increases Stake in Dianthus Therapeutics, Inc. to 4.8%

On May 15, 2026, Wellington Management Group LLP, along with its affiliates Wellington Group Holdings LLP and Wellington Investment Advisors Holdings LLP, filed a Schedule 13G/A regarding their holdings in Dianthus Therapeutics, Inc. (DNTH). The filing indicates that as of March 31, 2026, the group beneficially owns 2,595,783 shares of common stock, representing a 4.8% ownership stake in the company. This reflects an increase from a previous 0.0% position as reported in the supplementary data. The shares are held of record by various investment advisers owned directly or indirectly by Wellington Management Group LLP, including Wellington Management Company LLP. The filing was made under Rule 13d-1(b), certifying that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The reporting entities share dispositive power over all 2,595,783 shares, while sharing voting power over 2,358,243 shares.