ANNOUNCEMENT ON RESOLUTIONS PASSED AT THE 2024 FIRST EXTRAORDINARY GENERAL MEETING

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) ANNOUNCEMENT ON RESOLUTIONS PASSED AT THE 2024 FIRST EXTRAORDINARY GENERAL MEETING Important Note: * Resolution voted down at the 2024 first extraordinary general meeting (the “EGM”): None The 2024 first EGM of Maanshan Iron & Steel Company Limited (the “Company”) was held at the Magang Office Building No. 8 Jiu Hua Xi Road Maanshan City Anhui Province the PRC at 1:30 p.m. on Wednesday 29 May 2024. All the resolutions listed in the notice of the 2024 first EGM dated 6 May 2024 were approved.I. CONVOCATION AND ATTENDANCE OF THE EGM (i) Date of the EGM: 29 May 2024 (ii) Venue of the EGM: Magang Office Building No. 8 Jiu Hua Xi Road Maanshan City Anhui Province – 1 –(iii) Details of holders of ordinary shares and holders of preference shares with restored voting rights present at the EGM and their shareholdings: 1. Number of shareholders attending either in person or by proxy 13 Among which: Number of holders of A shares 12 Number of holders of overseas listed foreign shares (H shares) 1 2. Total number of shares with voting rights held by shareholders present at the EGM (shares) 5413295289 Among which: To tal number of shares held by holders of A shares 3695574936 Total number of shares held by holders of overseas listed foreign shares (H shares) 1717720353 3. Percentage of shares with voting rights held by holders present at the EGM to total number of shares with voting rights of the Company (%) 69.877 Among which: Sha res held by holders of A shares to total number of shares (%) 47.704 Shares held by holders of overseas listed foreign shares (H shares)to total number of shares (%) 22.173 (iv) Voting was held in compliance with stipulations of the Company Law and the Articles of Association of the Company. The EGM was presided over by Mr. Mao Zhanhong the vice chairman of the Company.(v) Directors supervisors and secretary to the board of directors present at the EGM 1. 6 directors being Mao Zhanhong Ren Tianbao Guan Bingchun He Anrui Liao Weiquan and Qiu Shengtao out of 7 current directors of the Company were present at the EGM. Mr. Ding Yi the chairman of the Company entrusted Mr. Mao Zhanhong to attend and preside over the meeting on his behalf due to other business arrangements; 2. 3 out of 3 current supervisors of the Company were present at the EGM; 3. The general manager deputy general manager and secretary to the board of directors of the Company were present at the EGM; 4. Mr. Chen Hao and Ms. Yi Feifan lawyers from Beijing Zhong Lun Law Firm (Shanghai Office) appointed by the Company attended the EGM.KPMG Huazhen LLP acted as the scrutineer of the EGM and Ms.Yin Xiangyu attended the EGM on behalf of the institute.– 2 –II. DELIBERATION OF THE RESOLUTIONS (i) Resolutions for non-cumulative voting 1. Resolution: To consider and approve the resolution regarding the change of non-independent director Result: Approved Voting results: For Against Number Number Type of shareholders of votes Percentage of votes Percentage (%)(%) A shareholders 3693993336 99.96 1581600 0.04 H shareholders 70404274 97.53 1784062 2.47 Total number of ordinary shares: 3764397610 99.91 3365662 0.09 2. Resolution: To consider and approve the amendments to the Articles of Association of Maanshan Iron & Steel Company Limited and its appendices Result: Approved Voting results: For Against Number Number Type of shareholders of votes Percentage of votes Percentage (%)(%) A shareholders 3664960715 99.17 30614221 0.83 H shareholders 862278 1.19 71326058 98.81 Total number of ordinary shares: 3665822993 97.29 101940279 2.71 – 3 –(ii) Explanation regarding voting on the resolutions As at the date of the EGM save as disclosed herein no shareholder entitled to attend the EGM was required to abstain from voting in favour of the resolutions pursuant to Rule 13.40 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited. There was no restriction on shareholders as to their votes on any resolution at the EGM and no shareholder entitled to attend the EGM was required to vote only against the proposed resolutions at the EGM. Shareholders present in person or by proxy were entitled to one vote for each share they held. Resolution 2 is subject to consideration and approval at the 2024 first class meeting of the holders of A shares and the 2024 first class meeting of the holders of H shares.III. LAWYER ATTESTATION 1. Attesting law firm for the EGM: Beijing Zhong Lun Law Firm (Shanghai Office) Lawyers: Chen Hao and Yi Feifan 2. Legal opinion after attestation: The convocation and convening procedures of the EGM the qualifications of the attendees the voting procedures and voting results were all in compliance with the relevant provisions of laws regulations normative documents such as the Company Law the Rules of Procedures for General Meetings and the Articles of Association of the Company which were lawful and valid.By Order of the Board Maanshan Iron & Steel Company Limited Ren Tianbao Secretary to the Board 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.–4–