. To: President The Stock Exchange of Thailand The Board of Directors of Eastern Water Resources Development and Management Public Company Limited (“Company / EASTW”) at the meeting No.9/2020 held on May

October 2017 Subject: Notification of the Board of Directors No. 9/2017 on the Company Investment in SUT Hydro Company Limited To: The President The Stock Exchange of Thailand Pursuant Following Hydrotek

fees The Company’s brokerage fees in 2Q2018 were Baht 223 million, an increase of 15% from 2Q2017, mainly due to an increase in the SET average daily trading volume. 1.2 Fees and Service income The

- Translation - Ref : LPH/SET 2018/014 May 11, 2018 Subject : Clarification on the Operating Results for the three-month period ended March 31, 2017 (Q1/2017) To : President The Stock Exchange of

- Translation - Ref : LPH/SET 2019/007 May 15, 2017 Subject : Clarification on the Operating Results for the three-month period ended March 31, 2019 (Q1/2019) To : President The Stock Exchange of

August 10, 2018 SET-18-AC-002 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for the three months ended 30 June 2018 According to the resolution of

- Translation - Ref : LPH/SET 2020/009 May 13, 2020 Subject : Clarification on the Operating Results for the three-month period ended March 31, 2020 (Q1/2020) To : President The Stock Exchange of

" included: SET and mai listed companies passed the assessment conducted by the Stock Exchange of Thailand: THSI (SET) and THSI (mai) SET listed companies passed the assessment conducted by the Dow Jones

Baht. 4.1.2 The service rate of office area is 20,000 Baht per month. To set an one year contract fee, it is from the cost value plus the processing fee - the total is 240,000 Baht. 4.2 Payment term

requirements.  In addition, listed companies may submit the reports through the Stock Exchange of Thailand (SET)'s electronic system while the original may be filed with the SEC later. (3) Investor contacts