Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No ICN Mr. Sompong Chonecadeedumrongkul Acquisition Stock

. Jirawud Kuvanant Acquisition Stock 39.5696 1.5301 41.0997 19/12/2019 39.5696 1.5301 41.0997   246002852003-1 B52 นาย ทวี โฆษิตจิรนันท์ Acquisition Stock 0 6.327 6.327 17/05/2019 0 6.327 6.327   2562-0201

. Suthipot Ariyasuthivong Disposition Stock 6.0215 2.1428 3.8787 09/08/2021 6.0215 2.1428 3.8787   246012502108-1 OTO Mr. Suthipot Ariyasuthivong Disposition Stock 10.3072 0.7142 9.593 01/06/2021 10.3072

) THB 3,895 mill ion | 69% Gross Profit 5,650 Very Small Power Producer (VSPP) THB 245 mill ion | 4% Independent Power Producer (IPP) THB 1,511 mill ion | 27% GPSC - Q2/2020 Management Discussion and

of Governors of the Stock Exchange of Thailand Reference is made to the resolutions of the Board of Directors’ Meeting No. 6/2018 of Master Ad Public Company Limited (the “Company”), held on May 17

(Additional) To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Asset Acquisition (Addendum 1) regarding acquisition of shares of S-TREK (Thailand) Co., Ltd. in the

September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary General Meeting of Shareholders No. 1/2017 (Amended) To: The President The Stock Exchange of Thailand

September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary General Meeting of Shareholders No. 1/2017 (Amended 2) To: The President The Stock Exchange of

September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary General Meeting of Shareholders No. 1/2017 (Amended 3) To: The President The Stock Exchange of

Jarunun Asavadumrongchai Acquisition Stock 4.4857 6.262 10.7477 16/07/2021 4.4857 6.262 10.7477   246012192107-1 AEC Mr. Luchai Pukananan Disposition Stock 10.4711 6.262 4.2091 16/07/2021 10.4711 6.262