Page 1 of 4 No. RJH – SET 9/2020 10 August 2020 Subject : Management’s Discussion and Analysis for the Second Quarter of 2020 To : The President The Stock Exchange of Thailand Rajthanee Hospital

@halcyon.co.th No. CS-2563/013 14 August 2020 Subject: Management Discussion and Analysis for the 3-Month Period Ended 31 March 2020 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology

[COMPANY NAME] Ref.: EFORL IR037/2020 September 11, 2020 Subject: Management Discussion and Analysis Quarter 2 Ending 30 June 2020 To President The Stock Exchange of Thailand 1. Overview financial

2019-11-14 - ชี้แจงเปลี่ยนแปลงมากกว่า 20% Q3-2562 - ENG November 14, 2019 Subject: The clarification of the quarter 3/2019’s profit changing more than 20% Attention: The President The Stock Exchange

(Translation) IR 003/20 February 28, 2020 President and Director The Stock Exchange of Thailand Subject : To explain the

จดหมายชี้แจงQ160e May 15, 2017 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 31 March 2017 Summary of the 1 st Quarter

Translation August 9, 2017 Subject: Management explanation and analysis for Quarter ended 30 June 2017 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company Limited

1 - TRANSLATION - VS/PC (Q-Con) 032/2017 October 31st, 2017. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis the third quarter ended 30

% Attention: The President of The Stock Exchange of Thailand M Pictures Entertainment Public Company Limited (“the Company”) would like to submit the Financial Statement for the quarter ended September 30, 2017

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