May 12, 2026

Publication of the Notice of the Meeting, of the proxy forms and of the information on the share capital, as well as of the Explanatory Report of the Board of Directors on the following items on the ordinary part of the agenda: fourth item (Determination of the number of the members of the Board of Directors) on the agenda, fifth item (Determination of the term of the Board of Directors), sixth item (Election of the members of the Board of Directors), seventh item (Election of the Chairman of the Board of Directors) and eighth item (Determination of the remuneration of the members of the Board of Directors)

Publication of the extract of the Notice of the Meeting on at least one newspaper

Deadline for the supplementation of the agenda and for the submission of resolution proposals on the part of Shareholders holding at least 2.5% of the share capital (Article 126-bis, paragraph 1, first period, of Legislative Decree no. 58 of February 24, 1998) 

Deadline for the publication of the Explanatory Reports of the Board of Directors on the following items on the ordinary part of the agenda: first item (Financial statements as of December 31, 2025. Reports of the Board of Directors, of the Board of Statutory Auditors and of the External Auditor. Related resolutions. Presentation of the consolidated financial statements for the year ended on December 31, 2025 including the Consolidated sustainability statement related to the financial year 2025), second item (Allocation of the annual net income and distribution of available reserves) and ninth item (Long term incentive Plan 2026 reserved to the management of Enel S.p.A. and/or of its subsidiaries pursuant to Article 2359 of the Italian Civil Code, together with the Information Document related to the aforementioned Plan)

Deadline, for Shareholders holding at least 0.5% of the share capital, for filing candidate slates for the office of Director (Article 147-ter, paragraph 1-bis, of Legislative Decree no. 58 of February 24, 1998)

Deadline for the publication of the following documents:

• Annual Financial Report 2025, including the Consolidated sustainability statement related to the financial year 2025
• Report on the corporate governance and on the ownership structure 2025

Deadline for the publication of the Explanatory Reports of the Board of Directors on the following items on the ordinary part of the agenda: third item (Authorization for the acquisition and the disposal of treasury shares, subject to the revocation of the authorization granted by the ordinary Shareholders’ Meeting held on May 22, 2025. Related and consequent resolutions) and tenth item (Report on the remuneration policy and compensations paid: First section: report on the remuneration policy for 2026 (binding resolution); Second section: report on the compensations paid in 2025 (non-binding resolution), together with the Report on the remuneration policy for 2026 and compensations paid in 2025)

Deadline for the publication of the Explanatory Reports of the Board of Directors on sole item on the extraordinary part of the agenda (Cancellation of treasury shares without reduction of share capital and consequent amendment of Article 5 of the corporate bylaws; related and consequent resolutions) 

Deadline for:

• submission, by the Shareholders who have filed candidate slates for the office of Director, of the notice certifying their shareholding in order to submit the same slates (Article 147-ter, paragraph 1-bis of Legislative Decree no. 58 of February 24, 1998)
• publication by the Company of the candidate slates for the office of Director, filed by April 17, by Shareholders holding at least 0.5% of the share capital (147-ter, paragraph 1-bis of Legislative Decree no. 58 of February 24, 199)

Deadline for the publication, on the part of the Company, of the items added on the agenda and/or of the resolution proposals (if any) submitted by April 10 on the part of the Shareholders holding at least 2.5% of the share capital (Article 126-bis, paragraph 2, of Legislative Decree no. 58 of February 24, 1998)

Deadline for the submission to the Company of resolution proposals on items on the agenda (if any) on the part of those entitled to vote (Article 126-bis, paragraph 1, third period, of Legislative Decree no. 58 of February 24, 1998)

Deadline for the publication on the part of the Company, on its website, of resolution proposals on the items on the agenda (if any) submitted by those entitled to vote (Article 126-bis, paragraph 1, third period, of Legislative Decree no. 58 of February 24, 1998)

Record date for the right to attend the Meeting and exercise the voting rights

Deadline for filing with the Company, on the part of those entitled to vote, questions before the Meeting on the items on the agenda (Article 127-ter of Legislative Decree no. 58 of February 24, 1998)

Deadline for the notification of the proxy to the Exclusive Proxy Computershare S.p.A., in its capacity as “representative appointed” pursuant to Article 135-undecies of Legislative Decree no. 58 of February 24, 1998

Deadline for the publication on the part of the Company, on its website, of the answers to the questions on the items on the agenda received by April 30 from those entitled to vote

Recommended deadline for the submission of “ordinary” proxies and/or sub-proxies to the Exclusive Proxy Computershare S.p.A. pursuant to Article 135-novies of Legislative Decree no. 58 of February 24, 1998 and Article 106, paragraph 4, of Law-Decree no. 18 of March 17, 2020 converted with amendments by law no. 27 of April 24, 2020

Ordinary and extraordinary Shareholders’ Meeting

Deadline for the publication, on the part of the Company, of the summary of the Meeting resolutions and voting results (Article 125-quater, paragraph 2, of Legislative Decree no. 58 of February 24, 1998)

Deadline for the publication, on the part of the Company, of the minutes of the Meeting (Article 125-quater, paragraph 2, of Legislative Decree no. 58 of February 24, 1998)