X0508 4 2026-02-03 false 0001690585 Dianthus Therapeutics, Inc. /DE/ DNTH 0001992260 Randhawa Simrat C/O DIANTHUS THERAPEUTICS, INC. 7 TIMES SQUARE, 43RD FLOOR NEW YORK NY 10036 false true false false EVP, Head of R&D false Stock Option (Right to Buy) 52.46 2026-02-03 4 A false 150000 0 A 2036-02-03 Common Stock 150000 150000 D The shares of common stock underlying this stock option award will vest in equal monthly installments over the four years after January 1, 2026, subject to the Reporting Person's continued service to the Issuer on each such vesting date. /s/ Adam Veness, as attorney-in-fact for Simrat Randhawa 2026-02-04