Investor reminding

Subject                                  : Reminding of warrants' last trading 
date
Name of securities
  - Warrant of ALT TELECOM PUBLIC COMPANY LIMITED No. 1 (ALT-W1)
Last trading date                        : 24-Nov-2020
Book closing date of warrant             : From 27-Nov-2020 to 18-Dec-2020
Last exercise date                       : 18-Dec-2020
Date of post SP sign                     : From 25-Nov-2020 to 18-Dec-2020
Notification period for the exercise of  : From 03-Dec-2020 to 17-Dec-2020
the warrant
Delisting date of warrant                : 19-Dec-2020
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