v3.25.2
Stock-based compensation plans (Tables)
 12 Months Ended
Mar. 31, 2025
Text Block1 [Abstract]  
Summary of the Stock Option Plan A summary of the activities regarding the stock option plan during the fiscal years ended March 31, 2023, 2024 and 2025 is as follows:
 
 
 
Fiscal year ended March 31
 
 
 
2023
 
 
2024
 
 
2025
 
 
 
Number of

shares
 
 
 
Weighted-

average
exercise

price
 
 
Number of

shares
 
 
 
Weighted-

average
exercise

price
 
 
Number of

shares
 
 
 
Weighted-

average
exercise

price
 
 
 
Yen
 
 
Yen
 
 
Yen
 
Outstanding at beginning of the fiscal year
  
 
82,721,500
 
  
 
1,879
 
  
 
98,457,500
 
  
 
2,062
 
  
 
97,809,500
 
  
 
2,330
 
 
 
 
      
 
 
      
 
 
    
Granted
  
 
23,721,500
 
  
 
2,196
 
  
 
12,190,500
 
  
 
2,533
 
  
 
4,302,800
 
  
 
2,927
 
Exercised
  
 
6,304,000
 
  
 
1,113
 
  
 
10,608,500
 
  
 
1,359
 
  
 
18,930,500
 
  
 
1,843
 
Forfeited or expired
  
 
1,681,500
 
  
 
2,531
 
  
 
2,230,000
 
  
 
2,660
 
  
 
2,012,500
 
  
 
2,796
 
 
 
 
      
 
 
      
 
 
    
Outstanding at end of the fiscal year
  
 
98,457,500
 
  
 
2,062
 
  
 
97,809,500
 
  
 
2,330
 
  
 
81,169,300
 
  
 
2,442
 
 
 
 
      
 
 
      
 
 
    
Exercisable at end of the fiscal year
  
 
48,415,000
 
  
 
1,607
 
  
 
59,409,500
 
  
 
2,166
 
  
 
59,515,500
 
  
 
2,403
 
Summary of Unexercised Stock Acquisition Rights
A summary of unexercised stock acquisition rights as of March 31, 2023, 2024 and 2025 is as follows:
 
Series
 
Date of grant
 
Exercise term
 
Exercise price
 
 
Outstanding at end of the

fiscal year

(shares)
 
 
2023
 
 
2024
 
 
2025
 
26
th
   November 20, 2013  
November 20, 2014
to November 19, 2023
   ¥ 402       72,000       -       -  
27
th
   November 20, 2013  
November 20, 2014
to November 19, 2023
   $ 4.01       553,500       -       -  
28
th
   November 20, 2014  
November 20, 2015
to November 19, 2024
   ¥ 483       662,500       417,500       -  
29
th
   November 20, 2014  
November 20, 2015
to November 19, 2024
   $ 4.14       677,500       613,500       -  
30
th
   November 19, 2015  
November 19, 2016
to November 18, 2025
   ¥ 681       934,500       445,000       230,500  
31
st
   November 19, 2015  
November 19, 2016
to November 18, 2025
   $ 5.51       741,000       656,500       337,000  
32
nd
   November 22, 2016  
November 22, 2017
to November 21, 2026
   ¥ 673       1,952,000       1,157,000       755,500  
33
rd
   November 22, 2016  
November 22, 2017
to November 21, 2026
   $ 6.22       1,652,500       1,430,500       983,000  
34
th
   November 21, 2017  
November 21, 2018
to November 20, 2027
   ¥ 1,047       2,171,000       1,401,000       944,500  
35
th
   November 21, 2017  
November 21, 2018
to November 20, 2027
   $ 9.15       3,102,500       2,528,500       1,486,500  
36
th
   February 28, 2018  
February 28, 2019
to February 27, 2028
   ¥ 1,089       19,500       7,500       4,500  
38
th
   November 20, 2018  
November 20, 2019
to November 19, 2028
   ¥ 1,288       4,199,500       2,983,500       2,308,500  
39
th
   November 20, 2018  
November 20, 2019
to November 19, 2028
   $ 11.25       3,802,500       3,271,500       1,926,500  
40
th
   November 20, 2019  
November 20, 2020
to November 19, 2029
   ¥ 1,341       6,050,500       4,373,000       2,799,000  
41
st
   November 20, 2019  
November 20, 2020
to November 19, 2029
   $ 12.20       5,381,500       4,582,000       2,736,000  
42
nd
   April 17, 2020  
April 17, 2021
to April 16, 2030
   $ 12.75       66,500       -       -  
43
rd
   November 18, 2020  
November 18, 2021
to November 17, 2030
   ¥ 1,848       10,302,000       8,270,000       6,386,000  
44
th
   November 18, 2020  
November 18, 2021
to November 17, 2030
   $ 17.50       9,310,500       8,573,000       5,641,000  
45
th
   November 18, 2021  
November 18, 2022
to November 17, 2031
   ¥ 2,870       11,837,500       11,656,000       10,635,000  
46
th
   November 18, 2021  
November 18, 2022
to November 17, 2031
   $ 24.98       11,385,500       10,689,000       10,119,500  
47
th
   November 16, 2022  
November 16, 2023
to November 15, 2032
   ¥ 2,278       12,135,500       12,006,000       10,686,500  
48
th
   November 16, 2022  
November 16, 2023
to November 15, 2032
   $ 15.58       11,447,500       10,620,000       7,836,500  
49
th
   November 27, 2023  
November 27, 2024
to November 26, 2033
   ¥ 2,589       -       6,471,000       6,392,000  
50
th
   November 27, 2023  
November 27, 2024
to November 26, 2033
   $ 17.10       -       5,657,500       4,658,500  
51
st
   November 25, 2024  
November 25, 2025
to November 24, 2034
   ¥ 2,948       -       -       2,867,000  
52
nd
   November 25, 2024  
November 25, 2025
to November 24, 2034
   $ 18.93       -       -       1,435,800  
Summary of the restricted stock unit plan during the fiscal years
A summary of the activities regarding the restricted stock unit plan during the fiscal years ended March 31, 2023, 2024 and 2025 is as follows:
    
Fiscal year ended March 31
  
    
2023
     
2024
     
2025
  
    
Number of units
     
Number of units
     
Number of units
  
Outstanding at beginning of the fiscal year
      -        2,443,150        8,255,925  
  
 
 
     
 
 
     
 
 
  
Granted
      2,499,210        6,913,640        10,215,944  
Vesting
      -        757,040        2,746,775  
Forfeited
      56,060        343,825        635,243  
  
 
 
     
 
 
     
 
 
  
Outstanding at end of the fiscal year
         2,443,150          8,255,925           15,089,851  
  
 
 
     
 
 
     
 
 
  
Summary of The weighted-average fair value of the units on the grant date of the restricted stock units The weighted-average fair value per share on the grant date of the restricted stock units during the fiscal years ended March 31, 2023, 2024 and 2025 is as follows:
 
 
 
Fiscal year ended March 31
 
 
 
2023
 
 
2024
 
 
2025
 
Date of grant   November 25,
2022		     July 25,
2023		     November 27,
2023		     July 25,
2024		     November 25,
2024		  
The weighted-average fair value (Yen)
        2,295          2,587          2,532          2,644          2,944