result of a constant growth of the local and international patient base due to the openings of a new hospital (Kasemrad Hospital Ramkamhaeng) and new specialized center in the existing hospital branches

15 May 2018 Subject: Management Discussion and Analysis for the 3-Month Period Ended March 31, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

duty which related to the registration of land transfer. The local maintenance tax and property tax will be borne by the Company. - Total Value of transactions and criteria on pricing : The purchase

renovation of the hospitals and adding more specialized centers led to the expansion of both local and international patients based to the group. In addition, the rainy season arrived early this year resulted

14 August 2018 Subject: Management Discussion and Analysis for the Six-Month Period Ended June 30, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company

14 November 2018 Subject: Management Discussion and Analysis for the Nine-Month Period Ended September 30, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public

September 3rd,2019 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Thonburi Healthcare Group PLC. The board of directors of Ramkhamhaeng Hospital Public Co

local distributor of beverage products in Vietnam) to carry out a trading business of energy drink product in Vietnam. The purpose of this investment is to expand the overseas business of the Company. The

Connected Transaction_Subordinated loan Translation No. 24/2019 December 30, 2019 To: The President The Stock Exchange of Thailand Subject: Notification of the connected transaction relating to

January 9th, 2020 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Vibharam Co.,Ltd.’s new ordinary shares, and elder ordinary share which purchases from