v3.26.1
Stock-based compensation (Tables)
 12 Months Ended
Mar. 31, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of stock-based compensation expense
The following table summarizes the classification of stock-based compensation expense in the consolidated statements of operations for the years ended March 31, 2026 and 2025 as follows:
Year ended March 31,
20262025
Research and development$16,734 $18,439 
Selling, general and administrative15,538 16,605 
$32,272 $35,044 
The following table summarizes stock-based compensation expense by award type for the years ended March 31, 2026 and 2025 as follows:
Year ended March 31,
20262025
Stock options$15,312 $19,885 
Restricted and performance stock units
16,960 15,159 
$32,272 $35,044 
Schedule of assumptions used to determine the grant-date fair value of stock options granted
The following table presents, on a weighted-average basis, the assumptions that the Company used to determine the grant-date fair value of stock options granted to employees and directors:
Year ended March 31,
20262025
Risk-free interest rate3.97 %4.35 %
Expected term (in years)6.06.0
Expected volatility77.2 %76.3 %
Expected dividend yield0 %0 %
Summary of stock option activity
A summary of stock option activity under the Company’s equity incentive plans for the year ended March 31, 2026 is as follows:
Number of SharesWeighted Average Exercise PriceWeighted Average Contractual Term (Years)Aggregate Intrinsic Value
Outstanding as of March 31, 202510,214,878 $15.22 6.24$10,652 
Granted2,201,239 8.41 
Exercised(111,218)3.43 
Cancelled(519,441)13.97 
Outstanding as of March 31, 202611,785,458 14.12 5.63$4,323 
Options exercisable as of March 31, 20268,222,796 $16.01 4.40$4,282 
Options vested and expected to vest as of March 31, 202611,785,458 $14.12 5.63$4,323 
Schedule of share-based payment arrangement, restricted stock and restricted stock unit, activity
A summary of the changes in the Company’s RSUs and PSUs during the year ended March 31, 2026 is as follows:
Number of Shares
Weighted Average Grant Date Fair Value
Outstanding as of March 31, 20253,611,774 $12.40 
Granted3,499,956 8.81 
Vested(1,003,362)15.94 
Cancelled(599,486)10.44 
Outstanding as of March 31, 20265,508,882 $9.69