Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No ONEE Miss Poramaporn Prasarttongosoth Disposition Stock

Stock 0 0 0 05/10/2021 61.16 0 61.16   246013792110-1 Stock: common stock or preferred stock or depository receipt (DR). Convertible Securities: warrant or convertible debenture or other

Stock 34.1912 0.1224 34.3136 03/03/2023 34.974 0.1224 35.0965   246023442303-1 Stock: common stock or preferred stock or depository receipt (DR). Convertible Securities: warrant or convertible debenture

Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No OR PTT PUBLIC COMPANY LIMITED Acquisition Stock 71.75

securities 0.7808 6.6667 7.4474 09/12/2021 0.7808 6.6667 7.4474   246015072112-1 SAAM Mr. Soros Kongkamee Disposition Stock 5.0599 0.1832 4.8766 10/11/2021 5.0599 0.1832 4.8766   246014452111-1 Stock: common

Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No MASTER Mr. Pongsak Thammathataree Acquisition Stock

Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No SECURE HUDSON ASIA HOLDINGS PTE. LTD Disposition Stock

Stock 0 6.1904 6.1904 08/08/2023 10.7142 6.1904 16.9047   246025702308-1 Stock: common stock or preferred stock or depository receipt (DR). Convertible Securities: warrant or convertible debenture or

Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No SAF Mr. Pisit Ariyadejwanich Acquisition Stock 19.9492

Bangkok, August 7, 2013 ? The SEC will organize four rounds of half-day seminars on ?Revised Rules Governing Preparation of Reports under Section 56 and Annual Registration Statement (Form 56-1