Page 1 of 3 AC6302/004 February 26, 2020 Subject Clarification of the operating results for the year end ended December 31, 2019 To Director/ Managing Director The Stock Exchange of Thailand

Page 1 of 2 August 14, 2019 เรื่อง Clarification of the operating results for the second quarter ended June 30, 2019 เรียน Director/ Managing Director The Stock Exchange of Thailand According to

Page 1 of 2 No. ACC1805/02 May 31, 2018 Subject: Explanation of Financial Performance for the Quarter 1/2018 ended March 31, 2018 To: President, The Stock Exchange of Thailand According to the

Page 1 of 2 No. ACC6108/02 August 14, 2018 Subject: Explanation of Financial Performance for the Quarter 2/2018 ended June 30, 2018 To: President, The Stock Exchange of Thailand According to the

Page 1 of 2 November 13, 2019 Subject Clarification of the operating results for the quarter 3/2019 ended September 30, 2019 To Director/ Managing Director The Stock Exchange of Thailand According to

which the Company informed the Stock Exchange of Thailand on 13 September 2017. Today (6 October 2017), Advanced Wireless Network Co., Ltd. (“AWN”), a subsidiary of the Company has entered into the Share

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หน้า 1 ของ 3 (Translation) No. ACC6702/001 February 28, 2024 Subject: Clarification of operating results for the Annual Year 2023 (Revised) To: The President, The Stock Exchange of Thailand Advanced

1 2Q20 MD&A Advanced Info Service Plc. Executive Summary 2Q20 reflected the full effect of COVID-19 The effect from COVID-19 pandemic which had begun since Feb- 20 continued to fully develop in 2Q20