
Ad Hoc Announcement Pursuant to Art. 53 LR Geneva, Switzerland, October 8, 2026 - Addex Therapeutics (SIX: ADXN and Nasdaq: ADXN), a clinical-stage biopharmaceutical company focused on developing a portfolio of novel small molecule allosteric modulators for neurological disorders, today announced that its spin-out company, Neurosterix, in which Addex holds a 20% equity interest, has completed its Phase 1 clinical studies evaluating NTX-253 and plans to advance NTX-253 into Phase 2 clinical development.










