IRPC Annual Report 2023

No. Name Board of Directors Board without Executives Independent Directors The Audit Committee The Risk Management Committee The Corporate Governance and Sustainability Committee The Nomination and Remuneration Committee General Meeting of Shareholders 2023 (15 members) Number of meetings 13 (14 members) Number of meetings 1 (7 members) Number of meetings 2 (3 members) Number of meetings 13 (5 members) Number of meetings 12 (3 members) Number of meetings 6 (3 members) Number of meetings 5 (15 members) Number of meetings 1 1. Dr. Siri Jirapongphan 13/13 1/1 2/2 - - - - 1/1 2. Miss Siriwan Chierapong 13/13 1/1 2/2 3/3 9/9 - - 1/1 3. Miss Piangpanor Boonklam 13/13 1/1 - - 11/12 - 1/1 4. Mr. Prasong Inthonongphai 13/13 1/1 - - 12/12 - - 1/1 5. Mr. Phonchai Teerawet 9/9 1/1 - - 9/9 - - - 6. Asst. Prof. Dr. Chaiyaporn Phuprasert 13/13 1/1 2/2 - - 6/6 - 1/1 7. Mrs. Pranot Tirasai 9/9 1/1 - - - 5/5 - - 8. Mr. Chansak Chuenchom 13/13 1/1 - - - - 5/5 1/1 9. Mr. Petai Mudtham 13/13 1/1 - - - - 5/5 1/1 10. General Aittipol Suwannarat 13/13 1/1 2/2 - - 1/1 2/2 1/1 11. Mr. Yordchat Tasarika 13/13 1/1 2/2 10/10 - - 3/3 1/1 12. Mr. Somchai Rangsithananon 9/9 1/1 2/2 9/10 - - - - 13 M.D. Korn Pongjittham 9/9 1/1 2/2 10/10 - - - - 14. Mr. Krit Imsang 13/13 - - - 12/12 - - 1/1 15. Mr. Supot Laosuarpha * (deceased December 26, 2023) 13/13 1/1 - - - 6/6 - 1/1 Directors who retired or resigned in 2023 16. Dr. Anusorn Sangnimnuan (1) 4/4 - - - 3/3 - - 1/1 17. Mr. Somnuk Bamrungsalee (2) 4/4 - - 3/3 - - - 1/1 18. Mr. Jumpol Samphaophon (3) 4/4 - - 3/3 - - - 1/1 19. Dr. Ekniti Nitithanprapas (4) 4/4 - - - 3/3 - - 1/1 Meeting attendance of the Board of Directors and Board’s committees in 2023 Notes: (1) Dr. Anusorn Sangnimnuan Independent Director, completed term on 5 April 2023. (2) Mr. Somnuk Bamrungsalee Independent Director, completed term on 5 April 2023. (3) Mr. Jumpol Samphaophon Independent Director, completed term on 5 April 2023. (4) Dr. Ekniti Nitithanprapas, Director completed term on 5 April 2023. (Unit: times) 259 Report on Key Corporate Governance Activities 56-1 ONE REPORT 2023

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