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Equity Incentive Plans - (Tables)

9 Months Ended

Oct. 31, 2019

Share-based Payment Arrangement [Abstract]

A summary of 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 as of January 31, 2019	35,465,543	$	8.34	5.4	$	339,591

Options exercised	(4,797,359)	5.42
Options forfeited/canceled	(468,544)	15.78
Balance as of October 31, 2019	30,199,640	$	8.69	3.9	$	325,184
Vested and exercisable as of October 31, 2019	25,550,655	$	7.71	4.6	$	300,257

Restricted Stock Units

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


	Number of RSUs Outstanding	Weighted- Average Grant Date Fair Value		Aggregate Intrinsic Value (in thousands)
Unvested balance as of January 31, 2019	21,917,550	$	17.94	$	392,515
Granted	10,889,807	19.35
Vested	(6,910,339)	17.21
Forfeited	(2,239,739)	18.76

Unvested balance as of October 31, 2019	23,657,279	$	18.72	$	460,371

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 as of January 31, 2019	2,267,569	$	18.70	$	40,612
Granted	1,399,688	20.30
Vested	(1,063,977)	19.32


Unvested balance as of October 31, 2019	2,603,280	$	19.42	$	50,660

Stock-Based Compensation

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


	Three Months Ended October 31,						Nine Months Ended October 31,
	2018		2019		2018		2019
Cost of revenue—product	$	862	$	912	$	2,190	$	2,843
Cost of revenue—support subscription	3,327		3,517		8,940		11,101
Research and development ⁽¹⁾	24,634		27,827		67,956		85,180
Sales and marketing	18,681		16,802		49,890		51,171
General and administrative	10,825		5,171		26,962		24,495
Total stock-based compensation expense	$	58,329	$	54,229	$	155,938	$	174,790

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⁽¹⁾ Included in the three and nine months ended October 31, 2019 were $1.9 million and $4.2 million in deferred payments related to the Compuverde acquisition. See Note 4 for further details.