Alro S.A.

Registration Form • Sep 18, 2023

No. 77/18.09.2023

To: Financial Supervisory Authority Bucharest Stock Exchange

Current report in compliance with the stipulations of the Law no. 24/2017 and of the FSA Regulation no.5/2018 regarding the Issuers of financial instruments and market operations

Date of report: September 18, 2023 Name of issuer: Alro S.A. Headquarters: Slatina, 116 Pitesti Street, Olt County Telephone/ fax number: +40 249 431 901 / +40 249 437 500 Sole registration number at the Trade Register Office: RO 1515374 Trade Register Number: J28/8/1991 The European Unique Identifier (EUID): ROONRCJ28/8/1991 Legal Entity Identifier (LEI): 5493008G6W6SORM2JG98 Subscribed and paid-in share capital: 356,889,567.5 RON Regulated market on which the issued shares are traded: Bucharest Stock Exchange – Premium Tier Category (market symbol: ALR)

Important event to be reported: the registration of the company CCGT Power Isalnita SA

The company hereby informs the investors and general public that today, 18th September 2023, it was received the document certifying the registration of the company CCGT Power Isalnita SA, company where Alro SA holds 40.1% of the shareholding (the difference of 59.9% is held by Complexul Energetic Oltenia), and which, as SPV (Special Purpose Vehicle), will develop a gasfired power production capacity of a total installed power of 850 MW.

Marian-Daniel Năstase Gheorghe Dobra President of the Board of Directors Chief Executive Officer

Slatina, Romania Fax: +(40) 249 437 500 www.alro.ro

Alro S.A. 116 Pitesti Street Phone: +(40) 249 431 901 alro@alro.ro