SUBMISSION OF REQUEST FOR THE REVISION OF THE VOLUNTARY SHARE EXCHANGE TENDER OFFER MADE BY EURONEXT N.V. (“OFFEROR” OR “EURONEXT”) FOR THE ORDINARY REGISTERED SHARES OF HELLENIC EXCHANGES-ATHENS STOCK EXCHANGE S.A. (“ATHEX”) - CORRECTION

Core Viewpoint - Euronext has revised its voluntary tender offer for the ordinary registered shares of Hellenic Exchanges-Athens Stock Exchange S.A. (ATHEX), lowering the minimum number of shares required for the offer's completion from 38,759,500 to 28,925,001 shares, which corresponds to 50% plus one share of ATHEX's total voting rights [4][5]. Group 1: Tender Offer Details - On July 30, 2025, Euronext submitted a voluntary tender offer to acquire all ordinary registered shares of ATHEX [2]. - The Hellenic Capital Market Commission (HCMC) approved the information circular related to the tender offer on October 3, 2025 [3]. - The original prerequisite for the tender offer required at least 67% of ATHEX's total voting rights to be tendered [4]. - The revised terms submitted on November 7, 2025, require a reduced minimum of 28,925,001 shares to be tendered for the offer to complete [5]. - The acceptance period for the tender offer remains unchanged, starting on October 6, 2025, and ending on November 17, 2025 [6]. Group 2: Shareholder Acceptance - Shareholders who have accepted the original tender offer will also be considered as having accepted the revised terms [7]. Group 3: Advisory Statement - Deutsche Bank AG is acting as the advisor to Euronext for the tender offer, confirming the offer's credibility based on the Offeror's ability to issue and deliver the required shares [8][10].