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

Quarterly Ending June 30, 2018 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 3/2018 dated August 3, 2018

Baht 46.6 million or 4.9% Respectfully Yours, (Mr. Charoen Rujirasopon, Mrs. Niramon Rujirasopon) Authorized Directors

Exchange of Thailand The Board of Directors’ Meeting of Ladprao General Hospital Public Company Limited (the “Company”), No.6/2018, held on August 10, 2018, has approved the financial statements of the

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

57,983.99 55,401.38 2,582.61 4.66 Shareholders' equity 23,801.56 23,873.08 (71.52) (0.30) Please be informed accordingly Sincerely yours (Mr. Prasert Marittanaporn) (Mr. Anukool Tuntimas) Directors

ordinary shares. The board of directors of Rmakhamhaeng Hospital Public Company Limited held on August 15th, 2018 passed the following resolution the acquisition of Muengloei-Ram( remainder share in the

. Attention: President The Stock Exchange of Thailand The Meeting of the Board of Directors of KGI Securities (Thailand) Public Company Limited (“the Company”) No. 5/2018, held on 23rd August 2018, has approved

, (Mr. Charoen Rujirasopon, Mrs. Niramon Rujirasopon) Authorized Directors

: President The Stock Exchange of Thailand The Meeting of the Board of Directors of KGI Securities (Thailand) Public Company Limited (“the Company”) No. 6/2018, held on 8th November 2018, has approved the