Page 1 of 2 No. ACC6101/003 January 22, 2018 Subject: Approval to enter into Contract to sell of Land (Revised) To: President The Stock Exchange of Thailand According to the Board of Director’s

1 12 February 2018 Subject: Explanation of operating result in the financial statement ended 31 December 2017 To: Directors and Managers of the Stock Exchange of Thailand With reference to the

February 22, 2018 SET-18-AC-001 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the year ended 31 December 2017 According to the resolution of BKD’s

than 20% To : President The Stock Exchange of Thailand Global Service Center Public Company Limited (“the Company”) would like to inform that the Company has already disclosed financial statements for

) ( Translation ) Ref. AIT/19 - 246 July 5, 2019 Subject : Report on the Board of Directors’ resolution to sell shares in subsidiary To : The President The Stock Exchange of Thailand JCK International Public

Manager of The Stock Exchange of Thailand Union Petrochemical Public Company Limited and its subsidiaries ("the Company") would like to clarify the operating results for the Quarter 2/2019 ended June 30

. To : The director of the Stock Exchange of Thailand Ramkhamhaeng Hospital Public Company Limited would like to clarify the operation results, as follows: 1. Ramkhamhaeng Hospital Public Company Limited

1 11 February 2020 Subject: Explanation of operating result in the financial statement ended 31 December 2019 To: President of the Stock Exchange of Thailand With reference to the financial statement

August 11, 2020 SET-20-AC-003 Dear : The President The Stock Exchange of Thailand Subject : Clarification of Result’s Operation for the six months ended June 30, 2020 According to the resolution of

ที่ ITV / 2545 - Translation - AIS-CP 015/2020 18 June 2020 Subject: Establishment of new joint venture and subsidiary company To: President The Stock Exchange of Thailand Advanced Info Service Plc