v3.26.1
Share-based Payment Arrangements (Tables)
12 Months Ended
Dec. 31, 2025
Statement [LineItems]  
Summary of Inputs Related to Fair Value of Share Options
Regarding the aforementioned share-based payment arrangements issued during 2024, the fair value at the grant dates of the Company’s second employee restricted stock awards plan and USISH’s 2023 restricted stocks were measured by using the market price basis and the Black-Scholes Option Pricing Model incorporating the effect of the lock-up period, respectively. The inputs to the models were as follows:
Restricted stock plan
 
    
USISH’s
2023 restricted
stocks plan
(2024 granted)
Share price at the grant date
    RMB14.19 per share 
Exercise price
   RMB14.35 per share
Expected volatility (%)
   35.02-37.02
Lock-up periods (years)
   1.0-2.0
Expected dividend yield
   -
Risk free interest rate (%)
   2.11-2.27
ASE Inc. option plans [member]  
Statement [LineItems]  
Summary of Information About Share Options
Information about the share option plans that the Company granted and assumed were as follows:


$
                
$
                
$
                
$
                
$
                
$
                
 
  
For the Year Ended December 31
 
 
  
2023
 
  
2024
 
  
2025
 
 
  
 
 
 
Weighted
 
  
 
 
 
Weighted
 
  
 
 
 
Weighted
 
 
  
 
 
 
Average
 
  
 
 
 
Average
 
  
 
 
 
Average
 
 
  
Number of
 
 
Exercise
 
  
Number of
 
 
Exercise
 
  
Number of
 
 
Exercise
 
 
  
Options
 
 
Price
 
  
Options
 
 
Price
 
  
Options
 
 
Price
 
 
  
(In
 
 
Per Share
 
  
(In
 
 
Per Share
 
  
(In
 
 
Per Share
 
 
  
Thousands)
 
 
(NT$)
 
  
Thousands)
 
 
(NT$)
 
  
Thousands)
 
 
(NT$)
 
Balance at January 1
81,262 $ 50.2 212,240 $ 89.1   188,101 $  89.6
Options granted
150,000   107.0 -   -    -   - 
Options expired
-   - -   -   (213
) 
  73.0
Options forfeited
(1,471
) 
  66.9 (5,873
) 
  103.7   (3,765 )   93.5
Options exercised
(17,551 )   50.9 (18,266 )   48.0   (32,981 )   79.1
  
 
 
      
 
 
      
 
 
   
Balance at December 31
212,240   89.1 188,101   89.6   151,142   87.8
  
 
 
      
 
 
      
 
 
   
Options exercisable, end of year
62,505   46.5 44,242   44.3   66,837   72.9
  
 
 
      
 
 
      
 
 
   
Fair value of options granted (NT$)
29.7-35.1
-   -
  
 
 
      
 
 
      
 
 
   
Summary of Outstanding Share Options
Information about the outstanding share options at each balance sheet date was as follows:
 
    
Range of
Exercise Price
Per Share
(NT$)
    
Remaining
Contractual
Life (Years)
 
December 31, 2024
     
ASE 5
th
share options
   $ 73.0        0.7  
The Company 1
st
share options
     42.7        3.9  
The Company 2
nd
share options
     103.5        8.6  
December 31, 2025
     
The Company 1
st
share options
     41.1        2.9  
The Company 2
nd
share options
     99.7        7.6  
USISH option plans [member]  
Statement [LineItems]  
Summary of Information About Share Options
Information about share options was as follows:
 
$                  $                  $                  $                  $                  $                 
   
For the Year Ended December 31
 
   
2023
   
2024
   
2025
 
   
Number of
Options
(In
Thousands)
   
Weighted
Average
Exercise
Price
Per Share
(RMB)
   
Number of
Options
(In
Thousands)
   
Weighted
Average
Exercise
Price
Per Share
(RMB)
   
Number of
Options
(In
Thousands)
   
Weighted
Average
Exercise
Price
Per Share
(RMB)
 
Balance at January 1
 
 
20,246
 
 
$
 14.5
 
 
 
29,728
 
 
$
 14.7
 
 
 
17,001
 
 
$
 15.1
 
Options granted
 
 
14,506
 
 
 
14.5
 
 
 
-
 
 
 
- 
 
 
 
-
 
 
 
- 
 
Options expired
 
 
(1,204
) 
 
 
14.1
 
 
 
(1,027
) 
 
 
14.2
 
 
 
(3,719
) 
 
 
15.2
 
Options forfeited
 
 
(695
) 
 
 
13.6
 
 
 
(7,855
) 
 
 
14.3
 
 
 
(185
) 
 
 
15.4
 
Options exercised
 
 
(3,125
) 
 
 
12.1
 
 
 
(3,845
) 
 
 
12.7
 
 
 
(13,097
) 
 
 
15.0
 
 
 
 
     
 
 
     
 
 
   
Balance at December 31
 
 
29,728
 
 
 
14.7
 
 
 
17,001
 
 
 
15.1
 
 
 
-
 
 
 
- 
 
 
 
 
     
 
 
     
 
 
   
Options exercisable, end of year
 
 
 15,310
 
 
 
14.9
 
 
 
 17,001
 
 
 
15.1
 
 
 
-
 
 
 
- 
 
 
 
 
     
 
 
     
 
 
   
Fair value of options granted (RMB)
 
 
3.8-4.7
 
   
 
      -
 
   
 
-
 
 
 
 
 
     
 
 
     
 
 
   
Summary of Outstanding Share Options
Information about USISH’s outstanding share options at balance sheet date was as follows:
 
    
Range of
Exercise Price
Per Share
(RMB)
    
Remaining
Contractual
Life (Years)
December 31, 2024
     
2015 share options
   $ 15.5      0.9
2023 share options
     14.3      1.8
Summary of Information About Restricted Shares
Information about restricted stocks was as follows:

$
                
$
                
$
                
$
                
$
                
$
                
 
 
For the Year Ended December 31
 
 
 
2023
 
 
2024
 
 
2025
 
 
 
Number of
Options
(In
Thousands)
 
 
Weighted
Average
Exercise
Price
Per Share
(RMB)
 
 
Number of
Options
(In
Thousands)
 
 
Weighted
Average
Exercise
Price
 Per Share 
(RMB)
 
 
Number of
Options
(In
Thousands)
 
 
Weighted
Average
Exercise
Price
 Per Share 
(RMB)
 
Balance at January 1
 
 
 1,984
 
$
 10.7
 
 
 
 372
 
$
 14.5
 
 
 
   2,919
 
 
 
$ 14.4
 
Stocks granted
 
 
372
 
 
 14.5
 
 
 
5,722
 
 
14.4
 
 
 
-
 
 
 
-
Stocks exercised
 
 
(1,966
)
 
 
10.8
 
 
 
-
 
 
- 
 
 
 
(2,907
) 
 
 
 14.4
  
Stocks forfeited
 
 
(18
) 
 
 
- 
 
 
 
(3,175
) 
 
 
14.4
 
 
 
(12
) 
 
 
 14.5
   
 
 
       
 
 
       
 
 
   
 
Balance at December 31
 
 
372
  
 
 
14.5
 
 
 
   2,919
 
 
 14.4
 
 
 
-
 
 
 
- 
   
 
 
       
 
 
       
 
 
   
 
Options exercisable, end of year
 
 
-
 
 
- 
 
 
 
-
 
 
- 
 
 
 
-
 
 
 
- 
   
 
 
       
 
 
       
 
 
   
 
Fair value of restricted stocks granted (RMB)
 
 
12.2-
13.0
 
 
 
 
11.6-
12.4
 
 
 
 
-
 
 
 
 
 
       
 
 
       
 
 
   
Summary of Outstanding Restricted Shares
Information about USISH’s outstanding restricted stocks at balance sheet date was as follows:
 
    
Range of
Exercise Price
Per Share
(RMB)
    
Remaining
Contractual
Life (Years)
December 31, 2024
     
2023 restricted stocks (2024 granted)
   $ 14.4      2.0
2023 restricted stocks (2023 granted)
     14.5      1.9
Employee Restricted Stock Award [Member]  
Statement [LineItems]  
Summary of Information About Restricted Shares
Information about employee restricted stock awards was as follows:
 
    
For the Year Ended December 31
 
    
2023
   
2024
   
2025
 
    
(in thousand
shares)
   
(in thousand
shares)
   
(in thousand
shares)
 
Balance at January 1
     10,000       4,965         16,500  
Shares granted
     -       16,500       -  
Shares unrestricted
     (4,950 )      -       (5,375 ) 
Shares forfeited
     (70 )      (4,965 )      (255 ) 
Shares awaiting canceled
     (15 )      -       -  
  
 
 
   
 
 
   
 
 
 
Balance at December 31
       4,965         16,500       10,870  
  
 
 
   
 
 
   
 
 
 
AMPI Option Plans [Member]  
Statement [LineItems]  
Summary of Information About Share Options Information about share options was as follows:

$                    $                    $                    $                    $                    $                   
   
For the Year Ended December 31
 
   
2023
   
2024
   
2025
 
   
Number of
Options
(In
Thousands)
   
Exercise
Price
Per Share
(NT$)
   
Number of
Options
(In
Thousands)
   
Exercise
Price
Per Share
(NT$)
   
Number of
Options
(In
Thousands)
   
Exercise
Price
Per Share
(NT$)
 
Balance at January 1
 
 
3,100
 
 
$
 30.0
 
 
 
3,100
 
 
$
 30.0
 
 
 
3,100
 
 
$
 29.7
 
 
 
 
     
 
 
     
 
 
   
Balance at December 31
 
 
   3,100
 
 
 
30.0
 
 
 
3,100
 
 
 
29.7
 
 
 
3,100
 
 
 
29.7
 
 
 
 
     
 
 
     
 
 
   
Options exercisable, end of year
 
 
-
 
 
 
- 
 
 
 
   1,550
 
 
 
29.7
 
 
 
   2,325
 
 
 
29.7
 
 
 
 
     
 
 
     
 
 
   
Summary of Outstanding Share Options
Information about AMPI’s outstanding share options at each balance sheet date was as follows:
 
    
Range of
Exercise Price
Per Share
(NT$)
    
Remaining
Contractual
Life (Years)
December 31, 2024
     
2022 share options
   $ 29.7      7.3
December 31, 2025
     
2022 share options
     29.7      6.3