v3.26.1
Share-based Compensation - Hutchmed Share Option Activity (Details) - HUTCHMED Share Option Scheme - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Number of share options        
Outstanding as at beginning of period (in shares)   25,674,233 29,640,273  
Granted (in shares)     1,493,435  
Exercised (in shares)   (7,500) (726,525)  
Cancelled (in shares)   (1,388,236) (1,423,610)  
Expired (in shares)   (1,185,475) (3,309,340)  
Outstanding as at end of period (in shares)   23,093,022 25,674,233 29,640,273
Vested and exercisable (in shares)   19,802,670 20,020,945  
Weighted average exercise price in US$ per share        
Outstanding balance as at beginning of period (in US$ per share)   $ 4.59 $ 4.47  
Granted (in US$ per share)     3.27  
Exercised (in US$ per share)   2.5 2.17  
Cancelled (in US$ per share)   3.61 2.33  
Expired (in US$ per share)   5.44 4.46  
Outstanding balance as at end of period (in US$ per share)   4.6 4.59 $ 4.47
Vested and exercisable (in US$ per share)   $ 4.79 $ 4.94  
Weighted average remaining contractual life (years)        
Outstanding (in years)   4 years 6 months 3 days 5 years 1 month 13 days 5 years 11 months 26 days
Vested and exercisable (in years)   3 years 10 months 24 days 4 years 2 months 23 days  
Aggregate intrinsic value in US$'000        
Outstanding (in US$'000)   $ 5 $ 1,424 $ 3,804
Vested and exercisable (in US$'000)   $ 5 $ 953  
Executive director        
Share-based Compensation        
Vesting period 3 years      
Weighted average grant date fair value of share options (in US$ per share) $ 1.17