OVERSEAS REGULATORY ANNOUNCEMENT - ANNOUNCEMENT ON RESOLUTIONS OF THE BOARD OF DIRECTORS

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.马鞍山钢铁股份有限公司 Maanshan Iron & Steel Company Limited (A joint stock limited company incorporated in the People’s Republic of China) (Stock Code: 00323) OVERSEAS REGULATORY ANNOUNCEMENT ANNOUNCEMENT ON RESOLUTIONS OF THE BOARD OF DIRECTORS This announcement is made pursuant to Rule 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.I. CONVENING OF THE MEETING OF THE BOARD OF DIRECTORS On Wednesday 29 May 2024 the 23rd meeting of the tenth session of the board of directors of Maanshan Iron & Steel Company Limited (the “Company”) was held at Magang Office Building. There were seven directors eligible for attending the meeting and seven of them attended it. The meeting was presided over by Jiang Yuxiang the chairman. The meeting was convened in compliance with the provisions of the laws regulations and requirements under the Articles of Association.II. CONSIDERATION OF THE BOARD OF DIRECTORS (1) To approve the resolution in relation to election of the chairman. Voting results: 7 voted in favour 0 voted against and 0 abstained from voting. Mr. Jiang Yuxiang was elected as the chairman of the board of directors of the Company. (2) To approve the resolution in relation to by-election of member of the strategic and sustainable development committee of the board of directors.Voting results: 7 voted in favour 0 voted against and 0 abstained from voting. Mr. Jiang Yuxiang was elected as a member of the strategic and sustainable development committee of the board of directors.– 1 –(3) To approve the resolution in relation to by-election of member of the nomination committee of the board of directors.Voting results: 7 voted in favour 0 voted against and 0 abstained from voting. Mr. Jiang Yuxiang was elected as a member of the nomination committee of the board of directors of the Company. (4) To approve the resolution in relation to appointment of the chairman of the strategic and sustainable development committee of the board of directors.Voting results: 7 voted in favour 0 voted against and 0 abstained from voting. Mr. Jiang Yuxiang the chairman of the board of directors was appointed as the chairman of the strategic and sustainable development committee of the board of directors. (5) To approve the resolution in relation to the change of the authorized representative.Voting results: 7 voted in favour 0 voted against and 0 abstained from voting. Mr. Jiang Yuxiang the chairman of the board of directors was appointed as the authorized representative of the Company who shall act as one of the contact persons of the Company with the Hong Kong Stock Exchange. Mr. Ding Yi ceased to be the authorized representative of the Company and one of the contact persons of the Company with the Hong Kong Stock Exchange. (6) To approve the agenda of the 2024 first class meeting of the holders of A shares and 2024 first class meeting of the holders of H shares.Voting results: 7 voted in favour 0 voted against and 0 abstained from voting. The said class meetings will be held in succession at the Magang Office Building No. 8 Jiu Hua Xi Road Maanshan City Anhui Province at 2:30 p.m. on Wednesday 19 June 2024 (or immediately following the conclusion of the 2023 annual general meeting). For details please refer to the notices of general meetings to be issued separately by the Company in due course.Maanshan Iron & Steel Company Limited The Board of Directors 29 May 2024 Maanshan City Anhui Province the PRC As at the date of this announcement the directors of the Company include executive directors Jiang Yuxiang Mao Zhanhong and Ren Tianbao; and independent non-executive directors Guan Bingchun He Anrui Liao Weiquan and Qiu Shengtao.–2–