Ad Hoc Announcement Pursuant to Art. 53 LR Geneva, Switzerland, August 26, 2026 - Addex Therapeutics (SIX 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 it has raised gross proceeds of USD 2.8 million (CHF 2.2 million) through the sale of 437,869 ADSs representing 52,544,280 shares, through it's At the Market (ATM) offering agreement with H.C.