Hemab Therapeutics Holdings, Inc. Common StockPositive clinical data for HMB-002 and new HMB-003 program presented at ISTH 2026.

Hemab Therapeutics presented new clinical data from HMB-002 in Von Willebrand disease and announced the HMB-003 program at the ISTH 2026 Congress. HMB-002 demonstrated proof of mechanism with dose-dependent, greater than or equal to 2.4-fold peak increases in Von Willebrand Factor and Factor VIII, normalization of peak thrombin generation and APTT, and durability supporting potential monthly subcutaneous dosing. The single ascending dose part of the study showed that 8 of 9 evaluable patients had zero treated bleeds in the 28 days following dosing, with a mean annualized treated bleed rate of 1.6 compared to a baseline mean of 20.1. HMB-003 is a novel non-hormonal direct plasmin inhibitor with potent, selective and extended antifibrinolytic activity, designed to reduce bleeding across multiple settings beginning in heavy menstrual bleeding. Preclinical data showed sustained antifibrinolytic activity for approximately one week after a single subcutaneous dose in minipigs, supporting cycle-matched dosing.
Hemab Therapeutics Holdings, Inc. Common StockPositive clinical data for HMB-002 and new HMB-003 program presented at ISTH 2026.