-1- AIT (VP-SEC) 014E/2023 May 8, 2023 Subject: Management's Discussion and Analysis of Operating Results for Q1-2023 To: The President of the Stock Exchange of Thailand Summary of Operations Q1-2023

-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

วันที่ 10 พฤษภาคม พ -Translation- 1 Ref. LPN/SorKor/109/2561 10th May, 2018 Re: Report on Financial Analysis in Q1/2018 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co

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

-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

-1- AIT (VP-SEC) 016E/2019 May 7, 2019 Subject: Management's Discussion and Analysis of Operating Results for Q1-2019 To: The President of The Stock Exchange of Thailand Summary of Operations Q1

1 Ref: AC.017/2018 14 May 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

-1- AIT (VP-SEC) 018E/2018 August 9, 2018 Subject: Management's Discussion and Analysis of Operating Results for Q2-2018 To: The President of The Stock Exchange of Thailand Summary of Operations Q2

MDA Q2_61 EN -Translation- No. ECF2 033/2018 August 15, 2018 Subject: Management Discussion and Analysis of the 2nd quarter ended June 30, 2018 To President The Stock Exchange of Thailand East Coast

-1- AIT (VP-SEC) 024E/2018 November 6, 2018 Subject: Management's Discussion and Analysis of Operating Results for Q3–2018 To: The President of The Stock Exchange of Thailand Summary of Operations Q3