Page 1 of 1 ACC6606/003 May 15, 2023 Subject: Clarification of operating results for the first quarter of 2023 ended March 31, 2023 Dear Directors and Managers Stock Exchange of Thailand According to

customers’ assets in its possession to have at least 2 audit responsible for recipience notified from the auditor that may report doubtful behavior which directors or managers have committed an offense as

accordance with the specified qualifications and prohibited characteristics.  In addition, the revised rules require directors and managers of securities and derivatives business operators to pass training

. (66)2-9063242-50 e-mail: info@halcyon.co.th No. CS-2563/002 27 February 2020 Subject: Resolution of the Board of Directors’ Meeting No.1/2020 Attention: Directors and Managers, The Stock Exchange of

: Clarification of the Company’s operation for year 2018 compared to 2017 To: Directors and Managers The Stock Exchange of Thailand PAE (Thailand) Public Company Limited and its subsidiaries would like to clarify

: Clarification of the Company’s operation for 6 month period of 2019 compared to year 2018 To: Directors and Managers The Stock Exchange of Thailand PAE (Thailand) Public Company Limited and its subsidiaries would

Ref. 0347/2018 Date August 14, 2018 Subject 20% Performance Growth in the second quarter of 2018 Attention: Directors and Managers The Stocks Exchange of Thailand QTC Energy Public Company Limited

Page 1 of 2 ACC6711/003 November 14, 2024 Subject: Clarification of operating results for the third quarter of 2024 ended September 30, 2024 Dear Directors and Managers Stock Exchange of Thailand

Forms and Procedures for Filing or Changing Information on Issuing Company Directors and Executives

Offer for Sale of Newly Issued Securities to Directors or Employees (No. 2)