Notification the exercise of securities/ Notification the conversion of 
securities

Subject                                  : Notification the exercise of 
securities
Date announced                           : 26-Feb-2020
Name of securities                       : ALT-W1
Exercise date                            : 13-Mar-2020
The notification period for the exercise : From 04-Mar-2020 to 12-Mar-2020
 of the securities
Exercise price (baht per share)          : 3
Exercise ratio (Warrants : common        : 1 : 1
shares)
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