MDE01_2017_12Jan2018 Final (Translation) No. 01/2018 January 12, 2018 President The Stock Exchange of Thailand Re: Notification of the Resolution of the Board of Directors’ Meeting No. 1/2018 We

February 18, 2019 To: The President The Stock Exchange of Thailand Re: 2018 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s 2018 operating

February 17, 2020 To: The President The Stock Exchange of Thailand Re: 2019 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to report the Company’s 2019 operating

Exercise ratio (warrant: common stock) 1 : 1 Exercise price (baht per share) 2.10 Term of warrants 3 years Exercise period Quarterly First exercise date 30 September 2020 Last exercise date 27 August 2021

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

Following a referral from the Stock Exchange of Thailand (SET) in December 2021 and the SEC’s further investigation, it was found that the two offenders, namely (1) Mr. Suthee Siripornpitak, and (2