IRPC One Report EN

No. Name As of Dec. 31, 2020 Shareholding Percentage/ Number of shares As of Dec. 31, 2021 Shareholding Percentage/ Number of shares Number of Shares Increased (Decreased) During the Year WARRANT/ NVDR/ TSR/ DW (2021) Notes 9. Mr. Chawalit Tippawanich 0.00220% 450,000 0.00220% 450,000 No Change None Spouse None None No Change None Minor child None None No Change None 10. Mr. Sukrit Surabotsopon N/A None No Change None New Director from January 20, 2021 Spouse N/A None No Change None Minor child N/A None No Change None 11. Ms. Peangpanor Boonklum N/A None No Change None New Director from January 20, 2021 Spouse N/A None No Change None Minor child N/A None No Change None 12. Asst. Prof. Dr. Chaiyaporn Puprasert N/A None No Change None New Director at AGM meeting March 31, 2021 Spouse N/A None No Change None Minor child N/A None No Change None 13. Mr. Supot Laosuarpha N/A 0.00024% No Change None New Director at the AGM meeting March 31, 2021 Spouse N/A 50,000 No Change None Minor child N/A 0.00024% No Change None 14. Mr. Chansak Chuenchom N/A None No Change None New Director from October 1, 2021 Spouse N/A None No Change None Minor child N/A None No Change None Directors who completed term/ resigned during the year 1. Mr. Chansin Treenuchagron None None No Change None Resigned as the company’s Director from January 1, 2021 Spouse None None No Change None Minor child None None No Change None 241 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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