Sanofi: Information concerning the total number of voting rights and shares – May 2026

Information concerning the total number of voting rights and shares, provided pursuant to article L. 233-8 II of the Code de commerce (the French Commercial Code) and article 223-16 of the Règlement général de l’Autorité des Marchés Financiers (Regulation of the French stock market authority) Sanofi a French société anonyme with a registered share capital of €2,424,365,088 Registered office : 46, avenue de la Grande Armée - 75017 Paris - France Registered at the Paris Commercial and Companies Registry under number 395 030 844 Date Total number of issued shares Number of real voting rights (excluding treasury shares) Theoretical number of voting rights (including treasury shares)* May 31, 2026 1,214,099,027 1,333,575,416 1,349,603,933 * Pursuant to Article 223-11 of the Règlement général de l’Autorité des Marchés Financiers. This information is also available on the internet website of sanofi: https://www.sanofi.com/en/investors/sanofi-share-and-adrs/shares-structure-vote Investor Relations Department e-mail: investor.relations@sanofi.com Attachment EN_number_of_voting_rights_and_shares_MAY_2026