EXTRAORDINARY DISCLOSURE REGARDING THE PURCHASE OF OWN SHARES

Gloster Digital Group Public Limited Company (company registration number: 01-10-143270; registered office: 1038 Budapest, Fürdő u. 2.; hereinafter: the Company) hereby provides the following information in accordance with applicable laws, in particular Section 55 of Act CXX of 2001 on the Capital Market (“Tpt.”) and Decree No. 24/2008. (VIII. 15.) PM on the detailed rules governing disclosure obligations for publicly traded securities, as well as the General Rules of the Budapest Stock Exchange, hereby informs the Esteemed Investors of the following.

Implementation of the decision No. 1/2026.06.12., as well as to fulfill obligations arising from stock option programs and the granting of Shares to employees of the Company or its affiliates, or to members of its executive, decision-making, or supervisory bodies, pursuant to General Meeting Resolution No. 16/2026. (04.30.), the Company purchased on June 23, 2026, a total of 844 (eight hundred forty-four) dematerialized common shares with a par value of 10 HUF each, with ISIN code HU0000189600, issued by the Company and in dematerialized form, at an average price of 546.8 forints on the spot market of the Budapest Stock Exchange from SPB Befektetési Zrt. (registered office: 1051 Budapest, Vörösmarty tér 7-8, 3rd floor; company registration number: Cg.01-10-044420; tax ID number: 12517091-2-41), acting as an investment service provider.

As a result of these transactions, upon the crediting of the purchased shares to the Company’s securities account—that is, following the T+2 stock exchange settlement date—the total number of treasury shares held by the Company will be 8,953, or eight thousand nine hundred fifty-three.

Following the transactions described above, the ratio of the total par value of the Company’s treasury shares to its share capital is 0.0492561%.

Budapest, June 23, 2026

Gloster Digital Group Plc.

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