Common Stock and Stockholders' Equity (Tables)

12 Months Ended

Jan. 31, 2022

Equity [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity under the Company’s 2006 Stock Plan and the 2016 Plan during the year ended January 31, 2022 (aggregate intrinsic value in thousands):

	Options Outstanding
	Outstanding Stock Options	Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value
Balance, January 31, 2021	2,608,640	$	20.65	5.6	$	754,478
Options exercised	(759,390)	$	12.42	—	—
Options forfeited	(8,303)	$	70.45	—	—
Balance, January 31, 2022	1,840,947	$	23.82	4.7	$	203,339
Exercisable at January 31, 2022	1,784,435	$	22.13	4.7	$	200,107

(1)The above table includes 711,839 stock options with market and service based conditions.

Summary of Activity Related to RSUs

The following table summarizes the activity related to the Company’s RSUs during the year ended January 31, 2022:

	Number of RSUs Outstanding	Weighted- Average Grant Date Fair Value
Awarded and unvested at January 31, 2021	2,530,280	$	123.56
Awards granted	1,153,149	$	238.07
Awards vested	(1,235,810)	$	109.21
Awards forfeited	(322,970)	$	186.22
Awarded and unvested at January 31, 2022	2,124,649	$	184.56

(1)The above table includes 199,822 restricted share units with market and service based conditions.

Total Stock-Based Compensation Expense

The Company’s total stock-based compensation expense was as follows (in thousands):

	For the year ended January 31,
	2022		2021		2020
Cost of revenue:
Subscription	$	14,920	$	11,438	$	6,982
Professional services and other	16,991		15,563		7,773
Research and development	44,119		37,685		20,159
Sales and marketing	52,109		48,414		23,352
General and administrative	71,756		55,750		23,110
Total	$	199,895	$	168,850	$	81,376

Assumptions used to Estimate Fair Values of Stock Options Granted

The fair values of the Company’s stock options, ESPP and market-based awards granted during the years ended January 31, 2022, 2021 and 2020 were estimated using the following assumptions:

	For the year ended January 31,
	2022				2021				2020
Employee Stock Options:
Expected term (in years)	—				—				6.0
Volatility	—				—				42.7%
Risk-free interest rate	—				—				2.4%
Dividend yield	—				—				—
Employee Stock Purchase Plan:
Expected term (in years)	0.5		-	2.0	0.5		-	2.0	0.5		-	2.0
Volatility	42.1	%	-	61.2 %	48.6	%	-	60.7 %	44.4	%	-	65.9 %
Risk-free interest rate	0.0%		-	0.2 %	0.1	%	-	0.4 %	1.7	%	-	2.5 %
Dividend yield	—				—				—
Market-Based Awards:
Expected term (in years)	3.0				3.0				—
Volatility	54.6%				48.4%				—
Risk-free interest rate	0.3%				0.4%				—
Dividend yield	—				—				—