GC One Report 2023 [EN]

Board of Directors The Board of Directors as of February 15, 2024, comprises the following members: Name Position Date of appointment 1. Mr. Predee Daochai(1) Chairman/Chairman of the Independent Director Nov 15, 2023 2. Mr. Thanwa Laohasiriwong(2) Independent Director/Chairman of the Audit Committee Nov 1, 2023 3. Mr. Pakorn Nilprapunt(3) Independent Director/Chairman of the Nomination & Remuneration Committee and Director to the Audit Committee April 9, 2018 4. Professor Somkit Lertpaithoon Independent Director/Chairman of the Corporate Governance and Sustainability Committee April 9, 2018 5. Mr. Grisada Boonrach Independent Director/ Chairman of the Risk Management Committee June 2, 2020 6. Lieutenant General Nimit Suwannarat(4) Independent Director/Director to the Audit Committee and Director to the Nomination & Remuneration Committee Jan 1, 2023 7. Mr. Somkiat Prajamwong Independent Director/Director to the Nomination & Remuneration Committee April 4, 2022 8. Mr. Surachai Achalaboon(5) Independent Director/Director to the Corporate Governance and Sustainability Committee May 22, 2023 9. Police Colonel Dusadee Aryawuit(6) Independent Director/Director to the Corporate Governance and Sustainability Committee Nov 1, 2023 10. Mr. Patchara Anuntasilpa(7) Director/Director to the Corporate Governance and Sustainability Committee April 7, 2023 11. Mr. Chadil Chavanalikikorn Director/Director to the Corporate Governance and Sustainability Committee Dec 19, 2022 12. Mr. Petai Mudtham(8) Director/Director to the Risk Management Committee Feb 12, 2024 13. Mr. Noppadol Pinsupa(9) Director/Director to the Risk Management Committee Jan 23, 2023 14. Mr. Cherdchai Boonchoochauy Director/Director to the Risk Management Committee Dec 19, 2022 15. Mr. Kongkrapan Intarajang Director/Secretary to the Board of Directors/ Director to the Risk Management Committee/ Chief Executive Officer and President Oct 1, 2019 Remarks: (1) Mr. Predee Daochai, Independent Director, replaced Mrs. Watanan Petersik, effective November 15, 2023. (2) Mr. Thanwa Laohasiriwong, Independent Director, replaced Mr. Apisak Tantivorawong, effective November 1, 2023. (3) Mr. Pakorn Nilprapunt, Chairman of the Nomination & Remuneration Committee, replaced General Nithi Chungcharoen, effective January 1, 2023. (4) Lieutenant General Nimit Suwannarat, Independent Director, replaced General Nithi Chungcharoen, effective January 1, 2023. (5) Mr. Surachai Achalaboon, Independent Director, replaced M.L. Chayotid Kridakon, effective May 22, 2023. (6) Police Colonel Dusadee Aryawuit, Independent Director, replaced Mr. Piyasvasti Amranand, effective November 1, 2023. (7) Mr. Patchara Anuntasilpa, Director, replaced Mrs. Pantip Sripimol, effective April 7, 2023. (8) Mr. Petai Mudtham, Director, replaced Mr. Sarawut Kaewtathip, effective February 12, 2024 (9) Mr. Noppadol Pinsupa, Director, replaced Mr. Disathat Panyarachun, effective January 23, 2023. Directors who resigned during the period from January 1, 2023 to January 31, 2024: Name Position Term of appointment 1. M.L. Chayotid Kridakon Independent Director/Director to the Corporate Governance and Sustainability Committee May 14, 2022 - March 21, 2023 2. Mrs. Pantip Sripimol Director/Director to the Corporate Governance and Sustainability Committee Nov 22, 2021 - April 7, 2023 3. Mr. Piyasvasti Amranand Chairman/Chairman of the Independent Director April 9, 2018 - July 11, 2023 4. Mr. Apisak Tantivorawong Independent Director/Chairman of the Audit Committee Jan 24, 2020 - Aug 28, 2023 5. Mrs. Watanan Petersik Independent Director/Director to the Audit Committee/ Director to the Corporate Governance and Sustainability Committee Sep 22, 2014 - Sep 21, 2023 6. Mr. Sarawut Kaewtathip Director/Director to the Risk Management Committee July 20, 2020 - Jan 3, 2024 151 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023

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