SOITEC - INFORMATION RELATING TO THE TOTAL NUMBER OF VOTING RIGHTS AND SHARES FORMING THE SHARE CAPITAL AS OF MAY 31, 2026

Bernin, on June 3, 2026 INFORMATION RELATING TO THE TOTAL NUMBER OF VOTING RIGHTS AND SHARES FORMING THE SHARE CAPITAL (Article L. 233-8 II of the French Commercial Code and article 223-16 of the General Regulation of the French financial markets authority (AMF)) Corporate name and address of the company:     SOITEC Parc Technologique des Fontaines - Chemin des Franques 38190 Bernin (FRANCE) Statement date Total number of shares forming the share capital Total number of voting rights 05/31/2026   35,772,015(1)   Number of theoretical (gross) voting rights (2): 44,782,133 Number of exercisable (net) voting rights (3): 44,756,111 (1)   35,772,015 ordinary shares of €2.00 par value each, listed on the Euronext Paris regulated market under ISIN code FR0013227113 and the mnemonic “SOI”.