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Capital stock (Tables)
12 Months Ended
Dec. 31, 2020
Text block [abstract]  
Movement of Ordinary Shares Issued
Movements in the number of the Company’s ordinary shares outstanding are as follows:
   
2018
  
2019
  
2020
 
   
in thousands
  
in thousands
  
in thousands
 
January 1
   856,059   727,265   727,240 
Restricted shares – cancelled
   (349  (25  —   
Restricted shares – uncancelled
   (23  —     —   
Capital reduction
   (128,422  —     —   
  
 
 
  
 
 
  
 
 
 
December 31
  
 
727,265
 
 
 
727,240
 
 
 
727,240
 
  
 
 
  
 
 
  
 
 
 
Movement of Treasury Stock
On March 7, 2019 and August 6, 2019, the Company’s Board of Directors approved the cancellation of treasury stock 25,570 thousand shares amounted to NT$962,503 thousand. As of December 31, 2019, all of the Company’s treasury stocks were cancelled. As of December 31, 2018, the reasons for share repurchases and movements in the number of the Company’s treasury stock is as follows:
   
2018
 
   
Shares
  
Amount
 
   
in thousands
  
NT$000
 
January 1
   30,085   1,007,654 
Capital reduction
   (4,515  (45,151
  
 
 
  
 
 
 
December 31
  
 
25,570
 
 
 
962,503