PTT Public Company Limited appoint Directors in replacement of the vacant positions, effective from 1 December 2023 onwards as follows: Mrs. Phongsaward Neelayodhin to be an Independent Director in replacement of Mr. Krisada Chinavicharana. Mr. Chatchai Phromlert to be an Independent Director in replacement of Mr. Danucha Pichayanan. To appoint Members of Specific Committees as follows; The Audit Committee: Mr. Krishna Boonyachai Independent Director as the Chairman (unchanged), Air Chief Marshal Chanon Mungthanya Independent Director as a member (unchanged) Assoc.

Prof. Dr. Narongdech Srukhosit Independent Director as a member (newly appointed). The Remuneration Committee: GEN.Teerawat Boonyawat Independent Director as the Chairman (unchanged) Mr. Lavaron Sangsnit Director as a member (newly appointed) Mr. Phongsthorn Thavisin Independent Director as a member (newly appointed). The Corporate Governance and Sustainability Committee Mr. Jatuporn Buruspat Independent Director as the Chairman (unchanged), Assoc.

Prof. Dr. Chayodom Sabhasri Independent Director as a member (newly appointed), Mrs. Phongsaward Neelayodhin Independent Director as a member (newly appointed). The Enterprise Risk Management Committee: Mr. Chatchai Phromlert Independent Director as the Chairman (newly appointed) Prof. Dr.Thosaporn Sirisumphand Independent Director as a member (newly appointed), Mr. Chansin Treenuchagron Independent Director as a member (newly appointed). The appointment of new members of Specific Committees is effective from December 1, 2023 onwards.