Stock-Based Compensation (Tables)

12 Months Ended

Apr. 30, 2021

Share-based Payment Arrangement [Abstract]

A summary of the Company’s option activity during the periods indicated was as follows:


	Options Outstanding
	Number of Stock Options Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
	(in thousands)				(in thousands)
Balance as of April 30, 2019	23,372	$	2.46	7.98	$	50,679
Options granted	16,619	$	4.86
Options exercised	(1,809)	$	2.34
Options cancelled	(5,305)	$	3.84
Balance as of April 30, 2020	32,877	$	3.48	8.03	$	116,962
Options granted	14,504	11.50
Options exercised	(5,799)	2.90
Options cancelled	(3,095)	5.89
Balance as of April 30, 2021	38,487	$	6.39	7.98	$	2,304,714
Vested and exercisable as of April 30, 2021	13,290	$	3.35	6.55	$	835,990
Vested and expected to vest as of 4/30/2021(1)	39,578	$	6.35	7.98	$	2,371,708

(1) The number of options vested and expected to vest as of April 30, 2021 includes early exercised, unvested Class A common stock. Refer to Note 9. Stockholders’ Equity for more information.

Schedule of Valuation Assumptions

The weighted average assumptions underlying the fair value estimation are provided in the following table:


	Fiscal Year Ended April 30,
	2021		2020
Valuation assumptions:
Expected dividend yield	—	%	—	%
Expected volatility	43.8	%	38.6	%
Expected term (years)	6.3		6.3
Risk-free interest rate	0.4	%	1.7	%

Schedule of Restricted Stock Unit Activity

A summary of the Company’s RSU activities and related information is as follows:


	RSUs Outstanding
	Number of RSUs	Weighted Average Grant Date Fair Value Per Share
	(in thousands)
Unvested Balance as of April 30, 2020	—	$	—
RSUs granted	447	$	74.52
RSUs vested	—	$	—
RSUs forfeited	—	$	—
Unvested Balance as of April 30, 2021	447	$	74.52

Summary of Effects of Stock-Based Compensation

The following table summarizes the effects of stock-based compensation on the Company’s consolidated statements of operations (in thousands):


	Fiscal Year Ended April 30,
	2021		2020		2019
Cost of subscription	$	828	$	370	$	149
Cost of professional services	376		122		69
Sales and marketing	9,080		3,074		1,739
Research and development	2,950		1,223		781
General and administrative	8,506		3,521		1,529
Total stock-based compensation expense	$	21,740	$	8,310	$	4,267