General form for registration of securities under the Securities Act of 1933

Equity Incentive Plan - Stock options (Details)

v3.26.1
Equity Incentive Plan - Stock options (Details) - Stock Options - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
9 Months Ended 12 Months Ended
Feb. 28, 2026
Feb. 28, 2025
May 31, 2025
May 31, 2024
May 31, 2023
Number of shares          
Options outstanding at the beginning of the period 38,324 25,849 25,849 19,823  
Granted 925   13,025 14,251  
Exercised (100)   (500)    
Forfeited, expired, and cancelled (905)   (50) (8,225)  
Options outstanding at the end of the period 38,244   38,324 25,849 19,823
Options outstanding and exercisable (in shares) 31,322   28,594    
Weighted average exercise price          
Options outstanding at the beginning of the period (in dollars per share) $ 0.46 $ 0.6 $ 0.6 $ 0.99  
Granted (in dollars per share) 0.29   0.17 0.21  
Exercised (in dollars per share) 0.21   0.21    
Forfeited, expired, and cancelled (in dollars per share) 1.14   0.66 0.87  
Options outstanding at the end of the period (in dollars per share) 0.44   0.46 $ 0.6 $ 0.99
Options outstanding and exercisable (in dollars per share) $ 0.44   $ 0.54    
Additional Information          
Weighted average remaining contractual life in years 6 years 11 months 23 days   7 years 7 months 24 days 7 years 9 months 7 days 7 years 10 months 13 days
Weighted average remaining contractual life in years exercisable 6 years 7 months 28 days   7 years 2 months 23 days    
Aggregate intrinsic value in exercised $ 6   $ 72    
Aggregate intrinsic value in outstanding 1,794   4,039    
Aggregate intrinsic value in outstanding and exercisable $ 1,320   $ 2,653    
Stock option granted, Shares 900 11,700