Comments on: “Trading costs on the Stock Exchange of Thailand” Authors: Charoenwong C., Ding D.K., Jenwittayaroje N. Comments on: “Risk-taking behaviour during downturn: evidence of loss-chasing and

entitled to the right to attend the Extraordinary General Meeting of Shareholders No. 1/2019 (Record Date) To: Director and Manager The Stock Exchange of Thailand Reference is made to the notification which

Ref Ref. HF 0021 / 2018 February 23rd, 2018 Subject : Notification of the resolution of the Board of Directors No. 1/2018 (Edit) To : Director and Manager of The Stock Exchange of Thailand We, Hwa

/2018) To : Director and Manager of The Stock Exchange of Thailand We, Hwa Fong Rubber (Thailand) Public Company Limited, would like to notify the resolution of the Board of Directors Meeting No.1/2018

Ref Ref. HF 0021 / 2018 February 23rd, 2018 Subject : Notification of the resolution of the Board of Directors No. 1/2018 To : Director and Manager of The Stock Exchange of Thailand We, Hwa Fong

ที่ ITV / 2545 - Translation - AIS-CP 015/2020 18 June 2020 Subject: Establishment of new joint venture and subsidiary company To: President The Stock Exchange of Thailand Advanced Info Service Plc

(-Translation-) Ref. No. U.SET 027/2018 June 4, 2018 Subject: Acquisition of 50 percent of ordinary shares in the subsidiaries of Sansiri Public Company Limited To: The President The Stock Exchange

Page 1 of 4 Ocean Commerce Public Company Limited 148/1 Soi Raminthra 14, Raminthra Road, Tharang Sub-district, Bang Khen District, Bangkok 10230 Tel: 02-943-6663-4 Fax: 02-943-6343 02-943-7740 No

, Srinakarin Road, Huamak Sub- district, Bangkapi District, Bangkok 10240 Postponed to Within January 2020, the time and venue of meeting will be further notified via the system of the Stock Exchange of Thailand

_ Page 1 of 5 OCEAN COMMERCE PUBLIC COMPANY LIMITED 99/290 Floor 1, Soi Sukhumvit 43, Sukhumvit Road, Khlong Tan Nuea Sub-district, Watthana District Bangkok Tel: 0-2258-5565 No. OCMSET-6211-001 Date