Investor reminding

Subject                                  : Reminding of warrants' last trading 
date
Security Symbol
  - Warrant of PROSPER ENGINEERING PUBLIC COMPANY LIMITED No. 1 (PROS-W1)
Last trading date                        : 20-Apr-2026
Book closing date of warrant             : From 23-Apr-2026 to 14-May-2026
Last exercise date                       : 14-May-2026
Date of post "SP" sign                   : From 21-Apr-2026 to 14-May-2026
Notification period for the exercise of  : From 29-Apr-2026 to 13-May-2026
the warrant
Delisting date of warrant                : 15-May-2026
______________________________________________________________________