-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

to 1) consolidated operating loss of Baht 273 million during the year; 2) the recorded transaction of treasury shares from shareholders’ equity for financial management of 4 million shares during Q1

operating results for the 3-month period and 6-month period ending June 30, 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its Subsidiary (together

Ref. DBP. 141 / 2017 November 13, 2017 Subject : Clarification on Operating Results for the 3-Month Period and 9-Month Period ending September 30, 2017 To : President The Stock Exchange of Thailand

-2495-1366 Website: www.kiatnakin.co.th http://www.kiatnakin.co.th/ 2 Management Discussion and Analysis (MD&A) For the first quarter ended March 31, 2019 comparing operating performance and financial

ที่ กตพ Ref. DBP. 108 / 2019 August 13, 2019 Subject : Clarification on Operating Results for the 2nd quarter and 6-month Period ending June 30, 2019 To : President The Stock Exchange of Thailand

CPN’s operating results despite the impact on its revenue from rent and services from the major renovation at CentralWorld, the transfer of CentralFestival Pattaya Beach to CPN Retail Growth Leasehold

growth resiliency of CPN’s operating results despite the ongoing major renovation at CentralWorld and the transfer of CentralFestival Pattaya Beach to CPN Retail Growth Leasehold REIT (“CPNREIT”) in

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

Disposal”). By calculating on a Net Operating Profit basis after tax deduction, the highest transaction size is 33.63 percent of the Value of the Net Profit of the Company according to the consolidated