Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No NCL Miss Montira Charoenwal Disposition Stock 5.9915

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

13 November 2020 Subject Management Discussion and Analysis for the Nine months ended September 30, 2020 To The President The Stock Exchange of Thailand Do Day Dream Public Company Limited (the

. 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

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

;)) colluded with others used an inside information material to negative changes in the price of STARK's share to commit offense in using Miss Yosabavorn Amarit's securities trading account to sell

information material to negative changes in the price of STARK's share to commit offense in using Miss Yosabavorn Amarit's securities trading account to sell STARK shares on February 2023 before STARK

;)'s share to commit offense in using her securities trading account to sell STARK shares on February 2023 before STARK disclosed the inside information to the Stock Exchange of Thailand. This case is

| Stock in SET100 | Offering Date - 04/10/2019 - 17/03/2020

Derivative Warrants | SCC19C2003B | DERIVATIVE CALL WARRANTS ON THE SIAM CEMENT PUBLIC COMPANY LIMITED ISSUED BY YUANTA SECURITIES (THAILAND) COMPANY LIMITED LAST TRADING IN MARCH 2020 # B | Stock in