Communiqué regarding the availability of the Half-Year Report for the six months ended 30 June 2026

ALUM S.A. (“ALUM”)informs shareholders and investors on the release of the financial results of ALUM for the six months ended 30 June 2026, as follows:

• The Half-Year Report for the six months ended 30 June 2026 (unaudited), prepared in compliance with the provisions of the Regulation no. 5/2018 regarding the Issuers of financial instruments and market operations and with the provisions of the Bucharest Stock Exchange Code will be available starting on 31 August 2026, after 18:00 (Bucharest time).

The Half-Year Report for the six monthsended 30 June 2026, wasprepared in accordance with the Ministry of Public Finance Order no. 1802/2014 for the approval of the Accounting Regulations on individual annual financial statements and consolidated annual financial statements, with subsequent amendments.

ALUMHalf-Year Report for the six months ended 30 June 2026 is not audited and will be available on the Company’s website, category “Investor Relations”, section “Reports”:  http://www.alum.ro/en/ir/alum/reports and on the Bucharest Stock Exchange’s website, www.bvb.ro – symbol BBGA.

This communiqué was simultaneously sent to the Bucharest Stock Exchange and to the Financial Supervisory Authority.

Genoveva NĂSTASE                                                                        Gigi PÎRLOG

Chairman of the Board of Directors                                               General Director