INSIDE INFORMATION - POSITIVE PROFIT ALERT

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.CMOC Group Limited* (a joint stock company incorporated in the People’s Republic of China with limited liability) (Stock Code: 03993) INSIDE INFORMATION POSITIVE PROFIT ALERT This announcement is made by CMOC Group Limited* (the “Company” together with its subsidiaries the “Group”) pursuant to Rule 13.09 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited and the Inside Information Provisions under Part XIVA of the Securities and Futures Ordinance (Chapter 571 Laws of Hong Kong).The board of directors of the Company (the “Board”) hereby informs the shareholders and potential investors of the Company that based on the preliminary estimation by the financial department of the Company during the period of advance notice for results from 1 January 2024 to 30 June 2024: 1. It is estimated that the net profit attributable to shareholders of the Company for the first half of 2024 will be RMB5189 million to RMB5735 million representing an increase of RMB4486 million to RMB5032 million or 638% to 716% as compared with the same period of last year. 2. It is estimated that the net profit attributable to the shareholders of the Company after deduction of non-recurring loss/profit for the first half of 2024 will be RMB5375 million to RMB5941 million representing an increase of RMB5155 million to RMB5721 million or 2343% to 2600% as compared with the same period of last year. 3. For the first half of 2024 the output of the Company’s copper and cobalt mineral products recorded an increase and the comprehensive economies of scale gradually emerged. The output of copper metal was 313788 tonnes representing an increase of 101% as compared with the same period of last year; the output of cobalt metal was 54024 tonnes representing an increase of 178% as compared with the same period of last year.The significant increase in the results of the Company for the first half of 2024 as compared with the same period of last year is attributable to the significant increase in the output and sales of copper and cobalt products as compared with the same period of last year the effective initiatives such as cost optimization and technology upgrade and improvement as well as the improvement of performance resulted from the higher market price of copper in 2024. 1The information contained in this announcement is only based on the preliminary assessment by the Company’s management according to the unaudited management accounts of the Group which have not been audited by accounting firms. Detailed financial information of the Company will be disclosed in its 2024 interim report.Shareholders and potential investors of the Company are advised to exercise caution when dealing in the securities of the Company.By Order of the Board CMOC Group Limited* Yuan Honglin Chairman Luoyang City Henan Province the People’s Republic of China 12 July 2024 As at the date of this announcement the executive directors of the Company are Mr. Sun Ruiwen and Mr. Li Chaochun; the non-executive directors of the Company are Mr. Yuan Honglin Mr.Lin Jiuxin and Mr. Jiang Li; and the independent non-executive directors of the Company are Mr.Wang Kaiguo Ms. Gu Hongyu and Mr. Cheng Gordon.* For identification purpose only 2