Abivax to Join CAC Mid 60 and SBF 120 Indices Following Euronext Paris Annual Review PARIS, France, September 12, 2025, 5:45 p.m. CEST – Abivax SA (Euronext Paris: FR0012333284 – ABVX / Nasdaq – ABVX) (“Abivax” or the “Company”), a clinical-stage biotechnology company focused on developing therapeutics that harness the body’s natural regulatory mechanisms to modulate the inflammatory response in patients with chronic inflammatory diseases, announces today that following the annual review of the Euronext Par ...