-Defined Network and DNS server for Internet / Intranet zone of the Stock Exchange of Thailand, etc. Rental income from equipment for lease Rental income from equipment for lease in Q1-2022 increased from Q1

Eng_MD&A Final Q3'19 November 13, 2019 Ref: SET-2019-011 Re: Management Discussion and Analysis for Quarter 3’ 2019 Attn. to: President The Stock Exchange of Thailand Filter Vision Public Company

operational staffs as well as allowing supporting staffs to work from home for instance. For Q1/2020, the EBITDA of the company was at Baht 4,951 million, increased by Baht 835 million or 20% from Q4/2019, and

Ref. DBP. 153 / 2019 November 11, 2019 Subject : Clarification on Operating Results for the 3rd quarter and 9-month Period ending September 30, 2019 To : President The Stock Exchange of Thailand

increased from business expansion. For the 9M/2018, the net profit improved by Baht 420 million or 17% from 9M/2017. The gain was primarily due to start-up of IRPC-CP Phase 2 and ISP1 in Q4/2017 and the

1 Ref: AC.004/2018 26 February 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

No. CAZ 017/2020 07 August 2020 Subject: Management Discussion and Analysis for the 2nd Quarter ended 30 June 2020 Attention: The President, The Stock Exchange of Thailand CAZ (Thailand) Public

(Translation) UAC.CS/021/2020 November 11, 2020 Subject: Explanation of the operating results for the third quarter period ended September 30, 2020 To: President The Stock Exchange of Thailand

-1- AIT (VP-SEC) 035E/2023 November 7, 2023 Subject: Management's Discussion and Analysis of Operating Results for Q3-2023 To: The President of the Stock Exchange of Thailand Summary of Operations Q3

- ร่าง - 1 May 28, 2018 Subject Management Discussion and Analysis for the year ended 31st March 2018 To President of the Stock Exchange of Thailand Secretary of the Office of Securities and Exchange