operation, supervision of derivatives operation, or research on derivatives, or other similar lines of work regardless of the fact that such function provides services for other persons or for the benefit of

-1- AIT (VP-SEC) 013E/2018 May 8, 2018 Subject: Management's Discussion and Analysis of Operating Results for Q1-2018 To: The President of The Stock Exchange of Thailand Summary of Operations Q3

discussion and analysis for the year ended December 31, 2018 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the audited financial statements of Wiik & Hoeglund Public

1 Ref: AC.006/2019 25 February 2019 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

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Ref: UWC 025/2562 November 13, 2019 Subject: Management Discussion and Analysis 3rd Quarter ended September 30, 2019 To: President The Stock Exchange of Thailand Ua Withya Public Company Limited

SAAM Energy Development Public Company Limited - 1 - 21 February 2020 Subject: Management Discussion and Analysis for the year ended 31 December 2019 To: The President The Stock Exchange of Thailand

1 Ref: AC.008/2020 25 February 2020 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

IP_AC/001/2563 February 24, 2020 Subject Management’ discussion and analysis for the fiscal year ended December 31, 2019 To President The Stock Exchange of Thailand Interpharma Public Company Limited

-1- Ref. POL. 028/2020 February 25, 2020 Re: Management Discussion & Analysis of S & P Syndicate Public Company Limited Dear The President The Stock Exchange of Thailand S & P Syndicate Public