INFORMATION RELATING TO THE TOTAL NUMBER OF VOTING RIGHTS AND SHARES FORMING THE SHARE CAPITAL

In Bernin, on June 1, 2023

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)

1. Representing 35,589,417 ordinary shares of €2.00 par value each, listed on the Euronext Paris regulated market under ISIN code FR0013227113 and the mnemonic "SOI”.
2. The total number of theoretical voting rights (or "gross” voting rights) is used as the basis for calculating the crossing of shareholding thresholds. In accordance with article 223-11 of the AMF General Regulation, this number is calculated on the basis of all shares to which single or double voting rights are attached, including shares without voting rights (for example, treasury shares). In accordance with Article L. 233-14 of the French Commercial Code, 36,556 shares have been stripped of their voting rights until May 31, 2023.
3. The total number of exercisable voting rights (or "net” voting rights) is calculated after taking into account the number of shares entitled to double voting rights, and after deduction of the shares without voting rights (for example, treasury shares).

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About Soitec

Soitec (Euronext, Tech 40 Paris) is a world leader in designing and manufacturing innovative semiconductor materials. The company uses its unique technologies to serve the electronics markets. With more than 3,700 patents worldwide, Soitec’s strategy is based on disruptive innovation to meet its customers’ needs for high performance, energy efficiency and cost competitiveness. Soitec has manufacturing facilities, R&D centers and offices in Europe, the United States and Asia. Fully committed to sustainable development, Soitec adopted in 2021 its corporate purpose to reflect its engagements: "We are the innovative soil from which smart and energy efficient electronics

grow into amazing and sustainable life experiences.”

Soitec, SmartSiC™ and SmartCut™ are registered trademarks of Soitec.

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For more information, please visit www.soitec.com and follow us on Twitter: @Soitec_EN

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Soitec is a French joint-stock corporation with a Board of Directors (Société Anonyme à Conseil d’administration) with a share capital of €71,178,834 having its registered office located at Parc Technologique des Fontaines - Chemin des Franques - 38190 Bernin (France), and registered with the Grenoble Trade and Companies Register under number 384 711 909.

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• DDV May 2023 EN