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Stock-based compensation (Tables)

9 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement [Abstract]

A summary of our stock option activity is as follows (in thousands except per share and contractual life amounts):



	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Options outstanding as of June 30, 2019	3,409		$	6.49
Granted	55		4.92
Exercised	(1,343	)	6.27
Canceled or expired	(402	)	6.58
Options outstanding as of March 31, 2020	1,719		$	6.60	5.25	$	—
As of March 31, 2020:
Options vested and expected to vest	1,695		$	6.62	5.21	$	—
Options exercisable	1,442		$	6.86	4.76	$	—

Restricted stock units award activity

A summary of our restricted stock unit, or RSU, activity is as follows (in thousands except contractual life amounts):



	Number of Shares		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
RSUs outstanding as of June 30, 2019	2,637
Granted	1,584
Vested	(991	)
Canceled	(629	)
RSUs outstanding as of March 31, 2020	2,601		1.58	$	11,237
As of March 31, 2020:
RSUs expected to vest	2,232		1.47	$	9,643

Summary of shares available for grant activity

A summary of our shares available for grant activity is as follows (in thousands):



	Number of Shares
Shares available for grant as of June 30, 2019	4,472
Annual share increase authorized under 2009 Plan	1,667
Granted	(1,681	)
RSUs withheld for taxes in net share settlements	251
Canceled	633
Expired under 2009 and 2011 Plans	(5,342	)
Shares available under 2009 and 2011 Plans upon termination on November 20, 2019	—
Initial shares authorized under 2019 Plan on November 20, 2019	5,700
Shares added from 5,800,000 reserved share pool available⁽¹⁾	483
Granted	(1,019	)
Shares available for grant as of March 31, 2020	5,164
⁽¹⁾ Additional shares are available up to a maximum of 5,800,000 shares only to the extent shares subject to grants under the 2009 Plan were outstanding as of November 20, 2019 but later expire or otherwise terminate without having been exercised in full.

Stock-based compensation expense

The following table summarizes the stock-based compensation expense for continuing operations recorded for stock options, RSUs, including performance-based RSUs, and ESPP purchase rights (in thousands):



	Three Months Ended March 31,				Nine Months Ended March 31,
	2020		2019		2020		2019
Stock option awards	$	156	$	378	$	690	$	1,211
RSU awards	1,672		1,310		4,368		4,400
ESPP	131		—		131		—
Total stock-based compensation expense	$	1,959	$	1,688	$	5,189	$	5,611

Assumptions used to estimate weighted average fair value of options

The weighted average assumptions used to value stock option awards granted and the resulting weighted average grant date fair value per share were as follows:



	Nine Months Ended March 31,
	2020			2019
Expected volatility	48		%	39		%
Expected term (in years)	5.65			6.87
Risk-free interest rate	1.58		%	2.99		%
Dividend yield	—		%	—		%
Weighted average grant date fair value per share	$	2.27		$	2.32

Weighted average assumptions used to value ESPP purchase rights

The weighted average assumptions used to value ESPP purchase rights during the initial offering period beginning March 1, 2020 were as follows:



Expected volatility	93	%
Expected term (in years)	0.75
Risk-free interest rate	0.92	%
Dividend yield	—	%