The Board of CNOOC Limited announced that with effect from November 27, 2024, Mr. Zhou Xinhuai (?Mr. Zhou?) ceased to serve as the President of the Company due to work commitments. Mr. Zhou remains as the Vice Chairman, an Executive Director and the Chief Executive Officer of the Company; Mr. Yan Hongtao (?Mr. Yan?) was appointed as an Executive Director, the President and a member of the Strategy and Sustainability Committee of the Company, and ceased to serve as the Vice President of the Company. Born in 1970, Mr. Yan is a senior engineer.

Mr. Yan graduated from China University of Petroleum (Beijing) majoring in Oil and Gas Storage and Transportation Engineering and received a Master's degree in Engineering. Mr. Yan served as the Deputy General Manager of the Company's Development and Production Department, Deputy Director of the CNOOC Eastern South China Sea Petroleum Administrative Bureau, Deputy General Manager of the CNOOC (China) Limited Shenzhen Branch, and concurrently served as Deputy General Manager of CNOOC Deepwater Development Limited. From April 2020 to December 2021, Mr. Yan served as the General Manager of the Company's Development and Production Department, Deputy Safety Director and General Manager of the Company's Development and Production Department.

Mr. Yan served as General Manager of CNOOC (China) Limited Tianjin Branch from December 2021 to August 2024. Mr. Yan served as a Vice President of the Company from April 2022 to November 2024, and the Deputy General Manager of China National Offshore Oil Corporation (the ?CNOOC Group?) from August 2024. Mr. Yan will hold office until the 2024 annual general meeting of the Company.

The Board announced that Ms. Wen Dongfen (?Ms. Wen?) ceased to serve as a Non- executive Director and a member of the Audit Committee of the Company due to retirement. The Board announced that Mr. Wang Dehua (?Mr. Wang?) was appointed as a Non-Executive Director and a member of the Remuneration Committee of the Company. Born in 1966, Mr. Wang is a senior accountant.

Mr. Wang graduated from Renmin University of China majoring in Financial Accounting and received a Bachelor's degree in Economics. Mr. Wang previously served as Chief Financial Officer of China Petroleum & Chemical Corporation, Director of Finance Department of China Petrochemical Corporation, and Chairman of the Board of Directors of Shengjun International Investment Limited, Vice Chairman of Sinopec Finance Co. Ltd., etc.

Mr. Wang served as the Chief Accountant of China Oil & Gas Pipeline Network Corporation from November 2019 to August 2024. Mr. Wang served as a Director of CNOOC Group from August 2024. The Board announced that Ms. Mu Xiuping (?Ms. Mu?) was appointed as a Non-Executive Director and a member of the Audit Committee of the Company.

Born in 1974, Ms. Mu is a professor-level senior accountant. Ms. Mu received a Master's degree in Business Administration from Tsinghua University. Ms. Mu previously served as the Vice President of Bank of Kunlun Co.

Ltd. From October 2018 to May 2022, Ms. Mu served as the Chief Accountant of China Petroleum Engineering Corp. Ltd., and a member of the Coordination Committee of Support and Services Business Group of China National Petroleum Corporation. From May 2022 to October 2024, Ms. Mu served as the General Manager of the Finance Department of PetroChina Company Limited and concurrently served as the Vice Chairwoman of CNPC Exploration and Development Company Limited, Chief Financial Officer of CNPC Taihu Lake Investment (Beijing) Company Limited, etc.

during the period. Ms. Mu served as the Chief Accountant of CNOOC Group from October 2024. The Board announced that Mr. Cao Xinjian (?Mr. Cao?) ceased to serve as an Executive Vice President and the Safety Director of the Company due to work commitments, Mr. Sun Dalu (?Mr. Sun?) was appointed as an Executive Vice President of the Company, and Mr. Yan Hongtao was appointed as the Safety Director of the Company.

Born in 1968, Mr. Sun is a senior economist. Mr. Sun graduated from the University of International Business and Economics majoring in Business Administration and received a Master's degree in Business Administration. Mr. Sun successively served as General Manager of China Offshore Oil (Singapore) International Pte Ltd, General Manager of the Sales Department and General Manager of the Crude Oil and Natural Gas Sales Department of the Company, General Manager of CNOOC Petrochemical Import & Export Co.

Ltd., General Manager of the Sales Branch of CNOOC Group, Deputy General Manager of CNOOC Oil & Petrochemicals Co. Ltd., General Manager of the Strategy & Planning Department of CNOOC Group and the Company. From March 2020 to February 2022, Mr. Sun concurrently served as Chairman of CNOOC Oil & Petrochemicals Co.

Ltd., Chairman of CNOOC and Shell Petrochemicals Company Limited and Chairman of CNOOC Petrochemical Investment Co. Ltd. Mr. Sun served as Assistant to the General Manager of CNOOC Group from September 2017.