Valneva Provides Update on Chikungunya Vaccine IXCHIQ®

Saint Herblain (France), January 19, 2026 – Valneva SE (Nasdaq: VALN; Euronext Paris: VLA), a specialty vaccine company, today announced that the Company has decided to voluntarily withdraw the biologics license application (BLA) and Investigational New Drug (IND) application for its chikungunya vaccine, IXCHIQ®, in the United States, following suspension of the license by the U.S. Food and Drug Administration (FDA) in August 2025. The Company had been awaiting further information with respect to its formal response to the vaccine license suspension. Valneva was recently informed of the FDA’s further decision to now place the Investigational New Drug (IND) on clinical hold pending an investigation of a newly reported foreign Serious Adverse Event (SAE).