Born in 1966, Mr. Cao is an Executive Vice President of the Company and a professor-level senior economist. Mr. Cao obtained a master degree of Business Administration from the University of Wales in 2003. From June 1989 to September 1999, Mr. Cao served as a geological delegate of the Contract Area of CNOOC Donghai Company & Caltex and the deputy manager of Exploration Department of CNOOC Donghai Company. From September 1999 to February 2004, he served as Exploration Manager of Exploration Department, Assistant Manager, Acting Manager and Manager of Human Resources Department of CNOOC China Limited Shanghai Branch. From February 2004 to October 2006, he served as Deputy Director of the CNOOC Group Talent Work Leading Group’s Office. From October 2006 to April 2013 he served as Deputy General Manager of CNOOC China Limited Shanghai Branch. From July 2009 to April 2013, he also served as Deputy Director of Donghai Petroleum Administration Bureau of CNOOC. From April 2013 to March 2017, he served as Deputy General Manager and General Manager of Human Resources Department of CNOOC Group and the Company. From March 2017 to February 2020, he served as the Director of Bohai Petroleum Administration Bureau of CNOOC. From March 2017 to December 2021, he has served as General Manager of CNOOC China Limited Tianjin Branch. From August 2017, he was appointed as an Executive Vice President of the Company. In September 2017, he was appointed as Assistant President of CNOOC Group. Since April 2023, he has served as the Director of Overseas Oil & Gas Corporation, Ltd. and CNOOC China Limited. Mr. Cao was appointed as the Safety Director of the Company with effect from November 30, 2023.

Born in 1965. Mr. Sun is a professor-level senior engineer. He graduated from China University of Petroleum (Beijing) with a Doctor Degree of Engineering in Oil and Gas Field Development. From July 1988 to April 1998, he serviced as Engineer of Development Office, Deputy Director of 1st Development Office, Deputy Director of Development Office and Deputy Chief Engineer and Deputy Director of Research Institute of CNOOC Bohai Company. From April 1998 to July 1999, he served as Chief Engineer of Development Department of CNOOC Bohai Company. From July 1999 to January 2002, he served as Deputy Chief Geologist of Tianjin Branch of CNOOC China Limited. From January 2002 to December 2011, he served as Chief Development Engineer, Chief Development and Design Engineer and Manager of Development and Design Department, Chief Development and Design Engineer of CNOOC Research Center, and Chief Development and Design Engineer of CNOOC Research Institute. From December 2011 to December 2013, he served as Chief Engineer of Development, Deputy General Manager and Chief Engineer of Development of Development and Production Department of the Company. From December 2013 to February 2017, he served as General Manager of Science and Technology Development Department of CNOOC Group and the Company. From February 2017 to December 2020, he served as Executive Deputy Director of CNOOC Group Consulting Center. Mr. Sun was appointed as a Vice President of the Company with effect from December 2020.

Born in 1969, Mr. Xu is a doctor of Tsinghua University and a professor-level senior economist. Mr. Xu was an assistant researcher (lecturer) of the 21st Century Development Research Institute of Tsinghua University, He served as staff and strategic project manager of Strategic Planning Department of China Oilfield Services Limited (COSL), the Policy Research Manager of the Development Research Office of CNOOC Group, CFO of CNOOC Oil Base Group Co., Ltd., Vice President and CFO of CNOOC Energy Technology & Services Limited. From August 2013 to May 2016, he served as General Manager of the Legal Department of CNOOC Group and the Company. From May 2016 to July 2018, he served as Director of the Policy Research Office of CNOOC Group. From July 2018 to June 2020, he served as President of CNOOC Group Institute for Executive Development. Since June 2020, he has been serving as the General Manager of International Cooperation Department and Director of Foreign Affairs Department of CNOOC Group and the Company. Since April 2021, he has been serving as the Deputy General Legal Officer of CNOOC. Since May 2021, he has been serving as the Deputy General Counsel of CNOOC Group, the General Counsel and the Chief Compliance Officer of the Company. Mr. Xu has been appointed as a Joint Company Secretary, Secretary to the Board and Domestic Representative for Information Disclosure of the Company with effect from December 2022. Mr. Xu was appointed as the Chief Compliance Officer of CNOOC Group in May 2023.

Born in 1970, Mr. Yan Hongtao is a senior engineer and graduated from China University of Petroleum (Beijing) with a master’s degree in petroleum storage and transportation. Mr. Yan has served as 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, a subsidiary of the Company, and Deputy General Manager, General Manager, Deputy Safety Director and General Manager of Development and Production Department of the Company. Mr. Yan served as General Manager of CNOOC (China) Limited Tianjin Branch from January 2022. Mr. Yan was appointed as a Vice President of the Company on April 2022.

Born in 1970, Mr. Xu Changgui is a professor-level senior engineer. He graduated from China University of Geosciences (Beijing) and obtained a Ph.D. degree. From June 1998 to May 2014, Mr. Xu successively served various positions at Bohai Oil Research Institute and CNOOC (China) Limited Tianjin Branch. From June 2014 to April 2020, he served as the Chief Geologist of Bohai Oil Research Institute and as the manager of Exploration Department of CNOOC Bohai Petroleum Administration Bureau (CNOOC (China) Limited Tianjin Branch). From April 2020 to May 2021, he served as the Deputy General Manager and the Chief Geologist of CNOOC (China) Limited Zhanjiang Branch and the Deputy General Manager and the Chief Geologist of Hainan Energy Co., Ltd. Meanwhile, from October 2020 to May 2021, he also served as the Deputy General Manager and the Chief Geologist of CNOOC (China) Limited Hainan Branch. From May 2021 to September 2022, he served as the General Manager of the Exploration Department of the Company. Mr. Xu was appointed as the Deputy Chief Exploration Engineer of the Company on October 27, 2022.

Born in 1975, Ms. Wang is a senior economist. In 2005, she received a Master of Economics degree in finance from Central University of Finance and Economics. From July 1998 to October 1999, Ms. Wang served as the Finance and Risk Manager of the Treasury Department of CNOOC Limited. From October 1999 to November 2009, she worked as a debt management officer, a financing and risk management officer and a financing and risk management manager in the Financial Department of CNOOC China Limited. From November 2009 to October 2015, she served as the Vice President of CNOOC Southeast Asia Limited. From October 2015 to June 2016, she served as the Vice President and the Chief Financial Officer of CNOOC International Limited. Since June 2016, Ms. Wang has been serving as the General Manager of the Controllers Department of CNOOC Limited. Ms. Wang was appointed as the Chief Financial Officer of the Company on August 2023.