TOULOUSE, France–(BUSINESS WIRE)–Regulatory News: ABIONYX Pharma (Paris:ABNX): Market: Euronext Paris, Compartment C ISIN code: FR0012616852 Date Number of shares outstanding Total voting rights Total gross (1) Total net (2) September 30, 2026 43,736,415 55,932,572 55,671,329 (1) The total number of gross (or “theoretical”) voting rights is used as the basis for calculating threshold crossings. In accordance with Article 223-11 of the AMF General Regulations, this number is calculated on the