Appointment of Employee Representative Supervisors

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibilities 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.(a joint stock limited company incorporated in the People’s Republic of China with limited liability) (Stock Code: 00386) Appointment of Employee Representative Supervisors Pursuant to relevant provisions in Company Law of People’s Republic of China and the Articles of Association of China Petroleum & Chemical Corporation Mr. Zhang Zheng Mr. Bian Fengming andMr. Zhang Chunsheng were elected as the employee representative supervisors (the “EmployeeRepresentative Supervisor(s)”) of the ninth session of the supervisory committee (the “SupervisoryCommittee”) of China Petroleum & Chemical Corporation (“Company” or “Sinopec Corp.”) through democratic procedure. They will form the ninth session of the Supervisory Committee together with the other supervisors elected at the annual general meeting of the Company for 2023 (the “AGM”) for a term commencing from the conclusion of the AGM and ending on the expiry of the term of the ninth session of the Supervisory Committee.Biography of the Employee Representative Supervisors: Zhang Zheng aged 55. Mr. Zhang is an international business engineer with a bachelor’s degree. In December 2018 he was appointed as Deputy Head of Foreign Affairs Bureau and Deputy Director General of Office of Hong Kong Macau and Taiwan Affairs of China Petrochemical Corporation and Deputy Director General of International Cooperation Department of Sinopec Corp. (chief member level of department); in October 2019 he was appointed as Director General of the Board Secretariat of Sinopec Corp.; in December 2019 he was appointed as Director General of Board Secretariat and Deputy Director General of General Administration Department of Sinopec Corp. (chief member level of department); in January 2020 he was appointed as Representative on Securities Matters of Sinopec Corp.Bian Fengming aged 58. Mr. Bian is a professor level senior engineer with a Ph.D. degree. In January 2017 he was appointed as Chairman General Manager and Deputy Secretary of the CPC Committee of Sinopec Hainan Refining and Chemical Company Limited; in April 2020 he was appointed as Chairman and Secretary of the CPC Committee of Sinopec Hainan Refining and Chemical Company Limited; in December 2020 he was appointed as General Manager of Science & Technology Department of Sinopec Corp. and Chairman of China Petrochemical Technology Co. Ltd.Zhang Chunsheng aged 59. Mr. Zhang is a senior engineer with a bachelor’s degree. In January 2016 he was appointed as Vice Chairman General Manager and Deputy Secretary of the CPC Committee of Sinopec Group Jinling Petrochemical Co. Ltd.; in September 2018 he was appointed as Chairman and Secretary of the CPC Committee of Sinopec Group Jinling Petrochemical Co. Ltd. and Representative of Sinopec Jinling Company; in May 2022 he was appointed as Executive Director and Secretary of the CPC Committee of Sinopec Group Jinling Petrochemical Co. Ltd. and Representative of Sinopec Jinling Company. 1Other than those disclosed in the biography none of the above Employee Representative Supervisors has served as directors of other listed companies in the past three years and none of them has any relationship with any other directors supervisors senior management or substantial shareholders or controlling shareholder of Sinopec Corp. As at the date of this announcement none of the above Employee Representative Supervisors has any interest in the shares of Sinopec Corp. within the meaning of Part XV of the Securities and Futures Ordinance. None of them has received any regulatory sanction imposed by the China Securities Regulatory Commission and other relevant authorities or any disciplinary action by the stock exchanges.Each of the above Employee Representative Supervisors will enter into a service contract with Sinopec Corp. Pursuant to the service contracts the term of the Employee Representative Supervisors shall commence from the conclusion of the AGM and end on the expiry of the term of the ninth session of the Supervisory Committee. The remuneration of the Employee Representative Supervisors consists of annual base salary annual performance-based salary and incentive during the tenure. Sinopec Corp.will disclose in its annual report the remunerations obtained by each of the Employee Representative Supervisors during the relevant reporting period.Other than those disclosed herein there are no other matters in relation to the above Employee Representative Supervisors which should be disclosed to the shareholders of Sinopec Corp. or matters which would require disclosure under Rule 13.51(2)(h) to (v) of The Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.By order of the Board China Petroleum & Chemical Corporation Huang Wensheng Vice President and Secretary to the Board of Directors Beijing the PRC 28 June 2024 As of the date of this announcement directors of the Company are: Ma Yongsheng* Zhao Dong# Zhong Ren* Li Yonglin# Lv Lianggong# Niu Shuanwen# Wan Tao# Yu Baocai# Xu Lin + Zhang Liying+ Liu Tsz Bun Bennett+ and Zhang Xiliang+.# Executive Director * Non-executive Director + Independent Non-executive Director 2