expenses 690.1 107.2% 567.9 93.8% -122.2 -17.7% Profit (loss) from operating activities -46.4 -7.2% 37.3 6.2% 83.6 - Finance costs 10.9 1.7% 7.0 1.2% 3.9 -35.6% Share of loss of associate accounted for using

-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

-2841-5925 Website: www.kiatnakin.co.th http://www.kiatnakin.co.th/ 2 Management Discussion and Analysis (MD&A) For the first quarter ended March 31, 2018 comparing operating performance and financial

Website: www.kiatnakin.co.th http://www.kiatnakin.co.th/ 2 Management Discussion and Analysis (MD&A) For the first quarter ended March 31, 2018 comparing operating performance and financial position for the

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

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

1 (Translation) MD. 108/2017 Aug 7, 2017 Re: Management Discussion and Analysis For the Operating Results ended June, 2017 To: President The Stock Exchange of Thailand Management Discussion and