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Equity Incentive Plans - (Tables)

9 Months Ended

Oct. 31, 2021

Share-based Payment Arrangement [Abstract]

A summary of the stock option activity under our equity incentive plans and related information is as follows:


	Options Outstanding
	Number of Shares	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (In Years)	Aggregate Intrinsic Value (in thousands)
Balance at the end of fiscal 2021	18,558,974	$	9.60	4.3	$	251,503

Options exercised	(3,983,273)	8.42
Options forfeited	(286,550)	11.24
Balance at the end of the third quarter of fiscal 2022	14,289,151	$	9.90	3.6	$	242,811
Vested and exercisable at the end of the third quarter of fiscal 2022	13,250,654	$	10.32	3.4	$	219,225

Restricted Stock Units and Performance Restricted Stock Units

A summary of the RSU activity under our equity incentive plans and related information is as follows:


	Number of RSUs Outstanding	Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value (in thousands)
Unvested balance at the end of fiscal 2021	30,830,082	$	15.77	$	712,657
Granted	14,808,923	22.11

Vested	(9,875,551)	16.77
Forfeited	(4,845,679)	16.25

Unvested balance at the end of the third quarter of fiscal 2022	30,917,775	$	18.36	$	830,451

Restricted Stock

A summary of the restricted stock activity under our 2015 Plan and related information is as follows:


	Number of Restricted Stock Outstanding	Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value (in thousands)
Unvested balance at the end of fiscal 2021	557,836	$	19.06	$	12,903

Vested	(385,711)	18.60
Forfeited	(62,172)	20.22

Unvested balance at the end of the third quarter of fiscal 2022	109,953	$	20.04	$	2,953

Stock-Based Compensation

The following table summarizes the components of stock-based compensation expense recognized in the condensed consolidated statements of operations (in thousands):


	Third Quarter of Fiscal				First Three Quarters of Fiscal
	2021		2022		2021		2022
Cost of revenue—product	$	1,027	$	1,634	$	3,013	$	4,547
Cost of revenue—subscription services	3,883		5,555		10,961		15,098
Research and development	29,220		36,797		87,770		102,343
Sales and marketing	14,898		19,151		48,018		54,317
General and administrative	10,581		12,863		29,993		31,458
Total stock-based compensation expense	$	59,609	$	76,000	$	179,755	$	207,763