Annual report [Section 13 and 15(d), not S-K Item 405]

Equity Incentive Plan - Stock options (Details)

v3.26.1
Equity Incentive Plan - Stock options (Details) - Employee Stock Option - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Number of shares      
Options outstanding at the beginning of the period 38,324 25,849  
Granted 18,221 13,025  
Exercised (714) (500)  
Forfeited, expired, and cancelled (5,675) (50)  
Options outstanding at the end of the period 50,156 38,324 25,849
Options outstanding and exercisable (in shares) 26,945    
Weighted average exercise price      
Options outstanding at the beginning of the period (in dollars per share) $ 0.46 $ 0.6  
Granted (in dollars per share) 0.28 0.17  
Exercised (in dollars per share) 0.21 0.21  
Forfeited, expired, and cancelled (in dollars per share) 0.75 0.66  
Options outstanding at the end of the period (in dollars per share) 0.36 $ 0.46 $ 0.6
Options outstanding and exercisable (in dollars per share) $ 0.45    
Additional Information      
Weighted average remaining contractual life in years 7 years 11 months 19 days 7 years 7 months 24 days 7 years 9 months 7 days
Weighted average remaining contractual life in years exercisable 6 years 9 months    
Aggregate intrinsic value in exercised $ 74 $ 72  
Aggregate intrinsic value in outstanding 3,146 $ 4,039 $ 0
Aggregate intrinsic value in outstanding and exercisable $ 2,131