Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018


		Options Outstanding
			Weighted-		Weighted-
	Options and		Average		Average
	Awards		Exercise		Remaining	Aggregate
	Available for	Number of	Price Per		Contractual	Intrinsic
	Grant	Options	Share		Life (years)	Value
						(In thousands)
Balance—December 31, 2017	83,929	1,593,195	$	8.88	6.6	$	1,997
Immaterial prior period adjustment	(1,026)	13,784		4.54
Options authorized	1,084,516	—		—
RSUs granted	(75,700)	—		—
RSUs cancelled/forfeited	1,900	—		—
Options granted	(384,165)	384,165		8.73
Options exercised	—	(446,141)		4.95		$	1,903
Options cancelled/forfeited	44,784	(50,469)		7.68
Balance—September 30, 2018	754,238	1,494,534	$	7.70	8.3	$	992
Options exercisable—September 30, 2018		567,298	$	6.52	7.2	$	877

Schedule of Restricted Stock Unit Activity


	RSUs Outstanding
		Weighted-
		Average
	Number of	Grant Date
	Restricted Stock	Fair Value Per
	Units	Share
Balance—December 31, 2017	30,680	$	10.55
Granted	75,700		8.59
Vested	(10,000)		16.25
Cancelled/forfeited	(1,900)		8.39
Balance—September 30, 2018	94,480	$	8.42

Summary of Stock-Based Compensation Expense

The Company recognized stock-based compensation expense from awards granted to employees and non-employees under its equity incentive plans and from its ESPP as follows, excluding amounts related to GLOBALFOUNDRIES, Inc. (GF) (in thousands):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Research and development	$	132	$	122	$	378	$	367
General and administrative		504		499		1,403		938
Sales and marketing		86		51		283		206
Total	$	722	$	672	$	2,064	$	1,511

Schedule of Fair Value Assumptions


	Option Plan				ESPP
	Nine Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Expected volatility	51.9-53.5	%	47.2-61.1	%	59.5 - 87.8	%	49.3 - 66.2	%
Risk-free interest rate	2.64-2.94	%	1.93-2.10	%	0.94-2.11	%	0.5 - 1.0	%
Expected term (in years)	5.7-6.1		5.8-6.1		0.5 - 1.0		0.5 - 0.6
Dividend yield	—	%	—	%	—	%	—	%