Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Stock-Based Compensation

Summary of Stock Option Activity

		Options Outstanding
			Weighted-		Weighted-
			Average		Average
	Options		Exercise		Remaining	Aggregate
	Available for	Number of	Price Per		Contractual	Intrinsic
	Grant	Options	Share		Life (years)	Value
						(In thousands)
Balance—December 31, 2016	342,500	1,414,730	$	5.28	7.6	$	4,267
Options granted	(74,000)	74,000		7.88
Options exercised	—	(2,050)		4.42		$	8
Options cancelled/forfeited	5,048	(5,048)		4.97
Balance—March 31, 2017	273,548	1,481,632	$	5.41	7.5	$	4,406
Options exercisable—March 31, 2017		773,583	$	4.55	6.0	$	2,963
Options vested and expected to vest—March 31, 2017		1,481,634	$	5.41	7.5	$	4,406

Summary of Stock-Based Compensation Expense

The Company recognized stock-based compensation expense from options granted to employees and non-employees and from its ESPP as follows, exluding amounts related to GLOBALFOUNDRIES, Inc. (“GF”) (in thousands):

	Three Months Ended
	March 31,
	2017		2016
Research and development	$	172	$	45
General and administrative		226		54
Sales and marketing		33		12
Total	$	431	$	111

Schedule of Fair Value Assumptions of Stock Options

	Three Months Ended
	March 31,
	2017		2016
Expected volatility	47.2 - 47.3	%	—
Risk-free interest rate	2.0 - 2.1	%	—
Expected term (in years)	5.8 - 6.0		—
Dividend yield	—	%	—