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Equity (Tables)
6 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Common Stock Reserved for Issuance
The Company has shares of common stock reserved for issuance as follows (in thousands):
September 30, 2023
Common stock warrants641 
2010 Plan
Options outstanding16,664 
2021 Plan
Awards outstanding
2,159 
Shares available for future grant41,195 
2021 ESPP8,104 
Options outstanding outside the plans2,655 
Total71,418 
Stock Option Activity
Stock option activities within the Plans as well as outside of the Plans were as follows:
Number of Shares
(in thousands)
Weighted-Average
Exercise Price
Average Remaining Contractual Term
(in years)
Aggregate Intrinsic Value (in thousands)
Balance, March 31, 202322,407 $4.39 6.56$627,187 
Options exercised(2,380)3.05 
Options forfeited or expired(708)5.47 
Balance, September 30, 202319,319 4.51 6.12322,735 
Vested and exercisable as of September 30, 202311,804 2.93 5.40215,941 
Vested and expected to vest as of September 30, 202318,740 4.44 6.09314,519 
Restricted Stock Unit Activity
The following table summarizes RSU activity (in thousands, except per share information):
Number of SharesWeighted-
Average
Grant Date Fair Value
Unvested balance, March 31, 20231,951 $40.08 
Granted749 30.02 
Vested(392)38.44 
Forfeited(372)44.59 
Unvested balance, September 30, 20231,936 35.46 
Performance-Based Stock Unit Activity
The following table summarizes PSU activity (in thousands, except per share information):
Number of SharesWeighted-
Average
Grant Date Fair Value
Unvested balance, March 31, 2023206 $34.68 
Granted156 33.74 
Vested(78)36.96 
Forfeited(61)35.07 
Unvested balance, September 30, 2023223 33.10 
Stock-Based Compensation Expense
Total stock-based compensation expense recognized in the condensed consolidated statements of operations was as follows (in thousands):
Three Months Ended September 30,Six Months Ended September 30,
2023202220232022
Cost of revenue$2,278 $2,392 $4,739 $4,514 
Research and development2,538 2,862 5,794 5,414 
Sales and marketing2,697 3,982 8,692 7,056 
General and administrative2,288 2,117 4,577 3,875 
Restructuring3,646 — 3,646 — 
Total stock-based compensation expense$13,447 $11,353 $27,448 $20,859