Endesa S.A.

Net Asset Value • Dec 16, 2025

National Storage Mechanism | Additional information

Dividend Declaration

Borja Acha Besga

Secretary of the Board of Directors

Madrid 16 December 2025

In accordance with the provisions of Article 227 of the Spanish Securities Market Act, Endesa, S.A. hereby issues notice of the following Information:

The Company's Board of Directors has adopted the following resolutions:

INTERIM DIVIDEND

To distribute to Endesa, S.A. shareholders an interim dividend against 2025 profits in the amount of €0.50 gross per share.

Payment of this dividend will be made, subject to the provisions of current tax regulations, from 12 January 2026 through Banco Santander, S.A., in accordance with the provisions in force for entities participating in Sociedad de Gestión de los Sistemas de Registro, Compensación y Liquidación de Valores, S.A., (IBERCLEAR).

Consequently, the relevant dates for this corporate transaction are as follows:

- Date from which the shares of Endesa, S.A. will be traded without the right to benefit from the dividend (ex-dividend date): 8 January 2026.

- Date on which the registered shareholders entitled to demand benefits in their favor from Endesa, S.A. will be identified (record date): 9 January 2026.

- Payment date: 12 January 2026.

Secretary to the Board of Directors

Endesa, S.A. Registered offices: Calle Ribera del Loira, 60, Madrid. Registered in the Mercantile Registry of Madrid, page M-6405, volume 323, folio 1, Spanish Tax ID (C.I.F.) A28023430.

“This English-language version has been translated from the original issued in Spanish and is provided for informational purposes only. In the event of discrepancy, the Spanish language version prevails.”

View source version on businesswire.com: https://www.businesswire.com/news/home/20251216813339/en/

Endesa, S.A.