Founded in 1973 in France and built through a series of major combinations, including Synthélabo in 1999 and Aventis in 2004, Sanofi S.A. has developed into one of the world’s leading biopharmaceutical companies. Headquartered in Paris, the company focuses on innovative medicines and vaccines, with core strengths in immunology, neurology, rare diseases, oncology, and vaccines, while continuing to expand as an R&D-driven, AI-powered biopharma group. Sanofi operates in more than 70 countries, employs more than 83,000 people worldwide, and reported full-year 2025 sales of €43.6 billion.
Updated 2026-03-19