Stockholders' Equity (Tables)

12 Months Ended

Jun. 30, 2020

Equity [Abstract]

Summary of Stock Option Activities

A summary of stock option activity as of June 30, 2020, and changes during the year ended June 30, 2020, is presented below:

	Number of shares (in thousands)			Weighted average exercise price per share		Weighted average remaining contractual term (in years)	Aggregate intrinsic value (in thousands)
Outstanding at June 30, 2019		10,027		$	5.90	8.37	$	75,223
Granted		2,937		$	18.78
Exercised		(3,291	)	$	4.09
Cancelled / forfeited / expired		(654	)	$	8.83
Outstanding at June 30, 2020		9,019		$	10.53	8.26	$	718,563
Vested and expected to vest at June 30,    2020 (1)		8,135		$	10.34	8.21	$	649,756
Vested and exercisable at June 30, 2020		2,584		$	6.23	7.12	$	217,024

^{(1) The expected to vest options are the result of applying the pre-vesting forfeiture rate assumptions to total outstanding options.}

Summary of Fair Value of Options Granted Black-Scholes Option-Pricing Model Assumptions

The fair value of options granted during the years ended June 30, 2020, 2019 and 2018 was estimated at the date of grant using the Black-Scholes option-pricing model with the following assumptions:

	Year ended June 30,
	2020	2019	2018
Expected term (in years)	6.25	6.25	6.25
Expected volatility	50.0% to 100.6%	46.0% to 51.0%	45.0% to 55.1%
Risk-free interest rate	0.35% to 1.88%	2.19% to 2.89%	2.05% to 2.89%
Expected dividend yield	0%	0%	0%

Summary of RSU Activity

A summary of RSU activity during the year ended June 30, 2020 is presented below:

	Number of shares (in thousands)			Weighted average grant date fair value
Nonvested at June 30, 2019		—		$	—
Granted		1,153		$	66.11
Vested		(8	)	$	62.78
Cancelled / forfeited / expired		(4	)	$	58.83
Nonvested at June 30, 2020		1,141		$	66.16

Schedule of Fair Value of ESPP Offerings

The fair value of ESPP offerings was estimated at the date of each offering using the Black-Scholes option-pricing model with the following assumptions during the year ended June 30, 2020:

Expected term (in years)	0.5 to 1.17
Expected volatility		50.0	%
Risk-free interest rate	1.47% to 1.56%
Expected dividend yield		0	%

Summary of Stock Based Compensation Expense from Stock Options, RSUs and ESPP

Stock-based compensation expense from stock options, RSUs and ESPP was included in the following line items in the accompanying consolidated statements of operations during the periods presented (in thousands):

	Year ended June 30,
	2020		2019		2018
Cost of revenue	$	1,257	$	331	$	78
Research and development		5,495		1,128		429
Sales and marketing		2,777		922		508
General and administrative		8,535		1,701		530
Total	$	18,064	$	4,082	$	1,545

Schedule of Warrants Issued and Outstanding

As of June 30, 2020, there were no stock warrants outstanding. As of June 30, 2019 the following warrants were issued and outstanding (in thousands except per share amounts):

	Number of warrants issued and outstanding		Weighted average exercise price		Expiration date
Series B redeemable convertible    preferred stock warrants		51	$	1.46	January 2020
Series D redeemable convertible    preferred stock warrants		12	$	2.50	May 2020
Common stock warrants		63	$	6.40	April 2024
Total		126

Schedule of Outstanding Redeemable Convertible Preferred Stock Warrant Liabilities

The outstanding redeemable convertible preferred stock warrant liabilities as of June 30, 2019 and 2018 were re-measured to fair value using the Black-Scholes option-pricing model. The key inputs used in the valuation were as follows:

	June 30,
	2019			2018
Expected term (in years)		0.58		1.04
Expected volatility		51.0	%		46.0	%
Risk-free interest rate		2.0	%		2.3	%
Expected dividend yield		0	%		0	%