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Equity Compensation Plans (Tables)
9 Months Ended
Feb. 28, 2022
Summary of Stock Option Activity A summary of stock option activity during the nine months ended February 28, 2022 follows:
 
           
Weighted-
 
           
Average
 
(Options in thousands)
  
Shares
    
Exercise Price
 
Options outstanding June 1, 2021
     2,957      $ 30.38  
Granted
     393        40.93  
Exercised
     (276      22.69  
Forfeited
     (27      31.18  
    
 
 
          
Options outstanding February 28, 2022
     3,047      $ 32.43  
Summary of Fair Value of Stock Options Granted Estimated Weighted-Average Assumptions The fair value of stock options granted was estimated using the following weighted-average assumptions.
    
FY 2022
 
FY 2021
Risk-free interest rate
   0.4%   0.2%
Expected dividend yield
   0.0%   0.0%
Expected stock price volatility
   32.8%   31.3%
Expected option life
   3.12 years   3.25 years
Restricted Stock Units (RSUs) [Member]  
Schedule of Nonvested Restricted Stock Units Activity
           
Weighted-
 
           
Average
 
(Options in thousands)
  
Shares
    
Fair Value
 
RSUs outstanding June 1, 2021
     121      $ 34.21  
Granted
     120        40.91  
Released
     (25      34.24  
Forfeited
     (4      35.61  
    
 
 
          
RSUs outstanding February 28, 2022
     212      $ 37.98