Positions of Directors and Executives in Subsidiaries/ Associated Companies/ Related Companies as of December 31, 2021 Notes: X = Chairman / = Director // = Executive 1. Mr. Sukrit Surabotsopon was appointed as a director on January 20, 2021 2. Miss Peangpanor Boonklum was appointed as a director on January 20, 2021 3. Asst. Prof. Dr. Chaiyaporn Puprasert was appointed as a director at the AGM meeting on March 31, 2021 4. Mr. Supot Laosuarpha was appointed as a director at the AGM meeting on March 31, 2021 5. Mr. Chansak Chuenchom was appointed as a director on October 1, 2021 6. Mr. Chansin Treenuchagron resigned as the chairman on January 1, 2021 7. Mr. Charcrie Buranakanonda completed his term at the AGM on March 31, 2021 8. Mr. Nuttachat Charuchinda completed his term at the AGM on March 31, 2021 9. Mr. Wattanapong Kurovat resigned as the director on May 1, 2021 10. Mr. Noppadol Pinsupa resigned as the director on October 1, 2021 11. Mr. Veerawat Srinoradithlert resigned as management on April 30, 2021 12. Mr. Poramet Junwichit has been appointed as Senior Executive Vice President, Corporate Organization Effectiveness on January 1, 2022 No. Name Com- pany Subsidiaries Joint Ventures Associated Companies Related Companies 1. Mr. Kris Imsang x // / x 2. Mr. Somnuk Bomrungsalee / 3. Air Mshl. Boonsuib Prasit / x 4. Mr. Anusorn Sangnimnuan / 5. Mr. Woothisarn Tanchai / 6. Mr. Jumpol Sumpaopol / 7. Miss Siriwan Chierapong / 8. Mr. Ekniti Nitithanprapas / 9. Mr. Sukrit Surabotsopon (1) / 10. Miss Peangpanor Boonklum (2) / // / 11. Asst. Prof. Dr. Chaiyaporn Puprasert (3) / 12. Mr. Supot Laosuarpha (4) / 13. Mr. Chansak Chuenchom (5) // x 14. Mr. Chawalit Tippawanich /, // x x x x x x / // 15. Mr. Chansin Treenuchagron (6) 16. Mr. Charcrie Buranakanonda (7) 17. Mr. Nuttachat Charuchinda (8) 18. Mr. Wattanapong Kurovat (9) 19. Mr. Noppadol Pinsupa (10) 20. Mr. Woravuth Sivapetranart // / / / / / 21. Mr. Somkiat Lertritpuwadol // / / / / / x / 22. Mrs. Nidcha Jirametthanakij // / / / / / / / / 23. Miss Wanida Utaisomnapa // / / / / / 24. Mr. Veerawat Srinoradithlert (11) // 25. Mr. Poramet Junwichit (12) // IRPC PLC IRPC Oil Co., Ltd. IRPC Technology Co., Ltd. IRPC A&L Co., Ltd. iPolymer Co., Ltd. IRPC Polyol Co., Ltd. WHA Industrial Estate (Rayong) Co., Ltd. Mytex Polymers (Thailand) Co., Ltd. PTT Energy Solutions Co., Ltd. UBE Chemical (Asia) PLC IRPC Clean Power Co., Ltd. PTT PLC Sport Services Alliances Co., Ltd. PTT Oil and Retail Business PLC. The Energy Complex Co., Ltd. PTT Tank Terminal Co., Ltd. 245 Corporate Governance Structure and Important Information about the Board of Directors, Sub-committees, Executives, Employees and Others IRPC PUBLIC COMPANY LIMITED
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