SES SA Global Cert Fiduciary Deposit Receipts 1-A Shs · SGBAF

Exhibit 99.1 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 MARIA…

6-K · 2026-10-06 · 0001193125-26-414949

Exhibit 99.1 SES Successfully Prices €500 million Eurobond 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 …

6-K · 2026-09-30 · 0001193125-26-408346

Exhibit 99.1 SES Confirms Interim Dividend of EUR 0.25 Interim dividend approved as part of SES’s continued commitment to shareholder returns intended to be at least EUR 0.50 total dividend for FY2026 Luxembourg, 23 September 2026 - The SES Board of Directors has approved the payment of an interim dividend of EUR 0.25 per A-share (EUR 0.10 per B-share) to be paid to shareholders on October 15, 2026, in line with SES’s commitment to shareholder returns. The interim dividend to be paid in Octo…

6-K · 2026-09-24 · 0001193125-26-400198

Exhibit 99.2 SES Appoints Michel Scholer to Board of Directors Michel brings extensive leadership, governance and strategic policy experience through his roles with the Luxembourg government Luxembourg, 23 September 2026 - SES today announced the appointment of Mr. Michel Scholer, Secretary General of the Luxembourg Government and Chief of Staff to the Prime Minister, to its Board of Directors effective immediately. This appointment is part of SES’s Board succession planning and ongoing commi…

6-K · 2026-09-24 · 0001193125-26-400198

Exhibit 99.1 Press Release SES’s Final Three O3b mPOWER Satellites Successfully Launched Additional O3b mPOWER satellites complete constellation and strengthen performance, resiliency and reach of SES’s MEO network Luxembourg, September 13, 2026 - SES today announced the successful launch of its eleventh, twelfth and thirteenth O3b mPOWER satellites, further expanding its second-generation medium Earth orbit (MEO) system designed to offer high-performance connectivity services around the w…

6-K · 2026-09-15 · 0001193125-26-391352

Exhibit 99.1 SES Expands into Global Direct-to-Device Services through Strategic Collaboration with Elveo Mobile Luxembourg, August 17, 2026 - SES, a global leader in space solutions, today announced an expanded strategic investment and collaboration with Elveo Mobile (Elveo), the new company created through the completion of the Lynk and Omnispace merger. Elveo unites the heritage of two pioneers in direct-to-device (D2D) services and will deliver mobile connectivity from space to mobile pho…

6-K · 2026-08-18 · 0001193125-26-354739