/2561 November 12, 2018 Subject: Management’s discussion and analysis of the Company’s operating results for Q3/2018 period To: President The Stock Exchange of Thailand DOD Biotech Public Company Limited

@halcyon.co.th No. CS-2563/003 27 February 2020 Subject: Management Discussion and Analysis for the Year Ended December 31, 2019 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public

1 Ref: CK-18-0000-AFD(AC)-L-0022 May 15, 2018 Subject: Clarification on Operating Result and Financial Position for the three-month ended March 31, 2018 Attention: President The Stock Exchange of

14 November 2019 Subject: Management Discussion and Analysis for the 9-Month Period Ended September 30, 2019 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public

3323 No. PACE IR 2020/01 Date: 25 August 2020 Subject: Explanation of the Operating Results for the three-month period ended 30 September 2019 changing over 20% To: The President The Stock Exchange of

E141117 Our Ref: TL034/17 November 14, 2017 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng, Bangkok 10400 Attention: The President Dear Sir

Our Ref: TL015/02 Our Ref: TL014/18 November 13, 2018 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng Bangkok 10400 Attention: The President

Ref. No. 156/2020 August 14, 2020 SUBJECT : Management Discussion and Analysis ending June 30, 2020 ATTN : The President Stock Exchange of Thailand Nam Seng Insurance Plc would like to clarify the

(amend To : President of the Stock Exchange of Thailand Ua Withya Public Company Limited ("Company") would like to describe and analyze the financial position and operating results for quarter 2-2019 are

1 Translation CEN 001-2021 March 1, 2021 Subject Management Discussion and Analysis for the year 2020 To The Manager and President The Stock Exchange of Thailand Capital Engineering Network Public