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

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

Ref. DBP. 111 / 2020 August 10, 2020 Subject : Clarification on Operating Results for the 2nd quarter and 6-month period ending June 30, 2020 To : President The Stock Exchange of Thailand Diamond

increased by Baht 63 million or 6% from Q1/2018. The increase in NNP was mainly due to improved performances of the company’s Independent Power Producer (IPP), Small Power Producer (SPP) and Very Small Power

. Suriyon Poolvoralaks Disposition Stock 4.5093 2.766 1.7433 28/05/2021 7.5311 2.766 4.7651   246011152106-1 MJD Mr. Suriyon Poolvoralaks Disposition Stock 7.4149 2.9055 4.5093 27/05/2021 10.4367 2.9055

. Jirat Tritrakulchai Disposition Stock 6.3018 1.7105 4.5912 19/05/2021 6.3018 1.7105 4.5912   246010802105-1 OCEAN Mr. Jirat Tritrakulchai Disposition Stock 11.1402 1.515 9.6251 28/04/2021 11.1402 1.515

Miss Paranya Rudjanapornpajee Acquisition Stock 4.9625 0.1244 5.0869 11/02/2022 4.9625 0.1244 5.0869   246016772202-1 SABUY Miss Paranya Rudjanapornpajee Disposition Stock 5.2414 0.4994 4.7419 18/01/2022

FOREVER ZILLION LIMITED Disposition Stock 16.4136 6.6394 9.7742 21/08/2020 16.4136 6.6394 9.7742   246005392008-1 NINE Mr. Weng sam Lam Acquisition Stock 0 6.6394 6.6394 21/08/2020 0 6.6394 6.6394