v3.26.1
Equity (Tables)
12 Months Ended
May 31, 2026
Equity  
Schedule of assumptions used in the Black-Scholes option pricing model to estimate the fair value of stock option grant

Stock Options Granted In Fiscal Year

 

  ​ ​ ​

2026

  ​ ​ ​

2025

  ​ ​ ​

2024

 

Risk-free interest rate

3.9

%  

4.2

%   

4.1

Expected volatility of common stock

 

34.1

%  

36.0

%  

42.3

%

Dividend yield

 

0.0

%  

0.0

%  

0.0

%

Expected option term in years

 

4.8

4.9

5.1

Schedule of stock option activity

A summary of stock option activity for the three years ended May 31, 2026 consisted of the following (shares in thousands):

2026

2025

2024

Weighted

Weighted

Weighted

Average

Average

Average

  ​ ​ ​

Shares

  ​ ​ ​

Exercise Price

  ​ ​ ​

Shares

  ​ ​ ​

Exercise Price

  ​ ​ ​

Shares

  ​ ​ ​

Exercise Price

Outstanding at beginning of year

935

$

44.94

1,004

$

38.49

1,573

$

33.24

Granted

 

160

80.17

 

157

67.02

 

142

58.27

Exercised

 

(474)

40.42

 

(212)

29.81

 

(706)

30.67

Cancelled

 

(27)

72.61

 

(14)

60.59

 

(5)

48.40

Outstanding at end of year

 

594

$

54.24

 

935

$

44.94

 

1,004

$

38.49

Options exercisable at end of year

 

318

$

39.94

 

635

$

38.13

 

696

$

33.95

Schedule of restricted share activity

Restricted share activity during fiscal 2026 was as follows (shares in thousands):

  ​ ​ ​

  ​ ​ ​

Weighted Average

Number of

Fair Value

  ​ ​ ​

Shares

  ​ ​ ​

on Grant Date

Nonvested at May 31, 2025

 

536

$

56.47

Granted

 

287

68.05

Vested

 

(268)

44.16

Forfeited

 

(49)

68.93

Nonvested at May 31, 2026

 

506

68.31