THIS ANNOUNCEMENT RELATES TO THE DISCLOSURE OF INFORMATION THAT QUALIFIED OR MAY HAVE QUALIFIED AS INSIDE INFORMATION WITHIN THE MEANING OF ARTICLE 7(1) OF THE MARKET ABUSE REGULATION (EU) 596/2014.

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN OR INTO OR TO ANY PERSON LOCATED OR RESIDENT IN, OR AT ANY ADDRESS IN, THE UNITED STATES OF AMERICA, ITS TERRITORIES AND POSSESSIONS (INCLUDING PUERTO RICO, THE U.S. VIRGIN ISLANDS, GUAM, AMERICAN SAMOA, WAKE ISLAND AND THE NORTHERN MARIANA ISLANDS), ANY STATE OF THE UNITED STATES OF AMERICA OR THE DISTRICT OF COLUMBIA (THE UNITED STATES) OR TO ANY U.S. PERSON (AS DEFINED IN REGULATION S OF THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE SECURITIES ACT)) OR IN OR INTO ANY JURISDICTION WHERE IT IS UNLAWFUL TO RELEASE, PUBLISH OR DISTRIBUTE THIS ANNOUNCEMENT.

On 11 March 2026, SES (the “Offeror”) announced its invitation to holders of its outstanding €625,000,000 Deeply Subordinated Fixed Rate Resettable Securities issued on 27 May 2021 (ISIN: XS2010028343) (the “Securities”) to tender their Securities for purchase by the Offeror for cash subject to the satisfaction (or waiver) of the New Issue Condition (such invitation, the “Offer”).

The Offer is being made by the Offeror upon the terms and subject to the conditions contained in the tender offer memorandum dated 11 March 2026 (the “Tender Offer Memorandum”) prepared by the Offeror in connection with the Offer, and is subject to the offer restrictions set out below and as more fully described in the Tender Offer Memorandum. Capitalised terms used but not otherwise defined in this announcement shall have the meanings given to them in the Tender Offer Memorandum.

The Offerer announces today that it is exercising its right to extend the previously announced Expiration Deadline in respect of the Offer, as described under “Amendment and Termination” in the Tender Offer Memorandum. The Offer was scheduled to expire at 5.00 p.m. (CET) on 18 March 2026 and will instead expire at 5.00 p.m. (CET) on 25 March 2026 (the “New Expiration Deadline”). The date of announcement of the results of the Offer, originally expected to be 19 March 2026, is now expected to be 26 March 2026 (the “New Announcement Date”). The Settlement Date, originally expected to be 23 March 2026, is now expected to be 30 March 2026 (the “New Settlement Date”).

All references to the Expiration Deadline, the announcement of results and the Settlement Date in the Tender Offer Memorandum (and any other materials relating to the Offer) shall be deemed to refer to the New Expiration Deadline, the New Announcement Date and the New Settlement Date, as set forth in the immediately preceding paragraph.

Holders who have previously validly tendered their Securities pursuant to the Offer are not required to take any further action with respect to such Securities and such tenders constitute a valid tender for purposes of the Offer. Holders who have not already tendered their Securities may validly do so until the New Expiration Deadline.

The above dates are, in any case, subject to the right of the Offeror, in its sole and absolute discretion, to extend, re-open, amend, waive any condition of and/or terminate the Offer at any time, as described in the Tender Offer Memorandum.