Change in share capital and new by-laws

Prysmian S.p.A. (the “Company”) shares an update to its share capital structure, following the issuance of shares for the purpose of the plans reserved to employees of the Company, and its subsidiaries and specifically:

• regarding the “BE IN” share plan, approved by the Ordinary Shareholders’ Meeting on April 12, 2022, no. 228,593 ordinary shares were issued on May 20, 2026, pursuant to the resolution for the share capital increase free of charge adopted by the Extraordinary Shareholders’ Meeting of April 16, 2026;
• regarding “BE IN” share plan, approved by the Ordinary Shareholders’ Meeting April 16, 2025, no. 130,238 ordinary shares were issued on May 20, 2026, pursuant to the resolution for the share capital increase free of charge adopted by the Extraordinary Shareholders’ Meeting of April 16, 2025;
• regariding the “LTI – GROW” incentive plan, approved by the Ordinary Shareholders’ Meeting on April 19, 2023, no. 5,074,189 ordinary shares were issued on May 25, 2026, pursuant to the resolution for the share capital increase free of charge adopted by the Extraordinary Shareholders’ Meeting of April 16, 2026.

The notice of this change in the share capital has been filed today with the relevant Companies’ Register.

The updated Company by-laws are available from today on the Company's website - www.prysmian.com and in the mechanism for the central storage of regulated information for Italian listed companies - www.emarketstorage.com.