Enel informs about the purchase of treasury shares between August 10ᵗʰ and 11ᵗʰ, 2026 serving its Long-Term Incentive Plan 2026 and about the conclusion of the share buyback program

Enel S.p.A. (“Enel” or the “Company”) announces that between August 10 ^th and 11 ^th, 2026 it purchased 1,171,000 treasury shares at a volume-weighted average price of 9.9000 euros per share on the Euronext Milan, market organized and managed by Borsa Italiana S.p.A., for a total consideration of 11,592,944.057 euros.

The transaction follows up on the announcement on July 30 ^th, 2026 concerning the start of a share buyback program (the “Program”), implementing the authorization granted by the Shareholders’ Meeting held on May 12 ^th, 2026 and resolved to serve the Long-Term Incentive Plan 2026.

On the basis of the information provided by the intermediary engaged to execute the purchases, the following table summarizes, in daily and aggregate form, Enel ordinary shares’ purchases carried out by the intermediary on the Euronext Milan market during the period indicated above:

Date / Number of shares purchased / Weighted average price (euros) / Total consideration (euros)

10/08/2026 - 645,562 - 9.9218 - 5,187,807.005

11/08/2026 - 525,438 - 9.8733 - 5,187,807.005

Total - 1,171,000 - 9.9000 - 11,592,944.057

The attachment to this press release gives a daily breakdown of the purchases carried out.

As a result of the above transactions, the Program, started on August 3 ^rd, 2026, under which 2,600,000 Enel shares (equal to approximately 0.0256% of the total number of shares into which the share capital is currently divided) have been bought at a volume-weighted average price of 9.9339 euros per share, for a total consideration of 25,828,146.557 euros, has been completed. Considering the treasury shares already owned, Enel holds as of August 11 ^th, 2026 a total of 246,016,292 treasury shares, equal to approximately 2.4198% of the total number of shares into which the share capital is currently divided.

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For the dissemination to the public and the storage of regulated information made available to the public, Enel S.p.A. has decided to use respectively the platforms “eMarket SDIR” and “eMarket Storage”, both available at the address www.emarketstorage.com and managed by Teleborsa S.r.l. - with registered office in Rome, at 4 Piazza Priscilla - as per CONSOB authorization and resolutions n. 22517 and 22518 of November 23, 2022.

From May 19 ^th 2014 to June 30 ^th 2015, Enel S.p.A. used the authorized mechanism for the storage of regulated information denominated “1Info”, available at the address www.1info.it, managed by Computershare S.p.A. with registered office in Milan and authorized by Consob with resolution No. 18852 of April 9 ^th, 2014.