v3.26.1
Share-based compensation (Tables)
6 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-Based Payment Arrangement, Option, Activity
Weighted average strike price per share (in $ per share)
Number of
awards
Weighted average remaining life in yearsAggregate Intrinsic Value (in $ thousands)
Outstanding as of December 31, 2025
$8.4010,414,305 6.77$5,025 
Granted3.96515,400 
Forfeited3.17(294,954)
Expired16.69(455,971)
Exercised2.01(187,379)
Outstanding as of June 30, 2026
$8.079,991,401 6.41$109 
Exercisable as of June 30, 2026
$9.567,628,328 5.80$70 
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions
Three Months Ended
June 30,
Six Months Ended
June 30,
2026202520262025
Expected volatility
100%
100%
100 %100 %
Expected life, (years)
6.086.086.086.08
Risk-free interest rate
4.07-4.12%
 3.97-4.14%
3.73-4.12%
3.97-4.43%
Expected dividend yield
— — — — 
Schedule of Share-Based Payment Arrangement, Restricted Stock Unit, Activity
The following table summarizes the RSU awards outstanding as of June 30, 2026:
Number of awardsWeighted average grant date fair value (in $ per share)
December 31, 20254,624,427 $1.74
Granted9,103,195 3.15
Vested (1)
(1,764,821)1.94
Forfeited(571,614)2.61
June 30, 202611,391,187 $2.79
(1) Includes 262,789 shares withheld to cover tax withholding obligations in connection with the vesting of RSUs previously granted.