August 10, 2018 SET-18-AC-002 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the three months ended 30 June 2018 According to the resolution of

November 8, 2018 SET-18-AC-003 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the three months ended 30 September 2018 According to the resolution

(Translation) (Translation) IR 024/18 November 14, 2018 President and Director The Stock Exchange of Thailand Subject : To explain the reasons on the company’s net profit (net loss) more than 20

(Translation) (Translation) IR 014/19 November 12, 2019 President and Director The Stock Exchange of Thailand Subject : To explain the reasons on the company’s net profit (net loss) more than 20

Our Ref: APURE 019/2023 12 May 2023 Subject Clarification on First Quarter’s Operating Performance (1/2023) Attn. To The Director and President of the Stock Exchange of Thailand The company clarifies

Our Ref: APURE 016/2024 10 May 2024 Subject Clarification on First Quarter’s Operating Performance (1/2024) Attn. To The Director and President of the Stock Exchange of Thailand The company clarifies

and introducing provisions for Digital Infrastructure Main Operator;  (2) Supervision of Securities and Derivatives Business Operators: revising regulations for major shareholders of business operators

@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

Owner of the Company before exchange rate 1,660.42 1,097.85 562.57 51.2 Gain (loss) on exchange rate 200.65 (256.34) 456.99 178.3 Profit Attributable to Owner of the Company 1,861.07 841.51 1,019.56 121.2

May 15, 2019 Subject : Management Discussion and Analysis for quarter ended March 31, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated