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Equity Compensation Plans (Tables)
6 Months Ended
Nov. 30, 2022
Summary of Stock Option Activity A summary of stock option activity during the six months ended November 30, 2022 follows:
(options in thousands)
  
Shares
 
  
Weighted-
Average
Exercise Price
 
Options outstanding June 1, 2022
     3,244      $ 32.13  
Granted
     1,687        14.63  
Exercised
     (4      10.75  
Forfeited/Expired
     (592      29.75  
    
 
 
          
Options outstanding November 30, 2022
     4,335      $ 25.66  
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 2023
   
FY 2022
 
Risk-free interest rate
     3.3     0.4
Expected dividend yield
     0.0     0.0
Expected stock price volatility
     34.0     32.8
Expected option life
     4.61 years       3.12 years  
Schedule of Nonvested Restricted Stock Units Activity A summary of RSU activity during the six months ended November 30, 2022 follows:
 
(RSUs in thousands)
  
Shares
    
Weighted-
Average
Fair Value
 
RSUs outstanding June 1, 2022
     257      $ 36.14  
Granted
     584        13.72  
Released
     (47      37.62  
Forfeited/Cancelled
     (5      37.63  
    
 
 
          
RSUs outstanding November 30, 2022
     789      $ 19.46