Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Stok Based Compensation

Schedule of stock-based compensation related to stock option and RSU

The following table presents the stock-based compensation related to stock option and RSU awards for the periods presented (in thousands):

	Three Months Ended March 31,
	2022		2021
Stock options expense
Cost of revenues	$	5	$	5
Selling, general and administrative		192		57
Research and development		9		6
Total stock options expense	$	206	$	68
Restricted stock units expense
Cost of revenues	$	54	$	—
Selling, general and administrative		666		—
Research and development		46		—
Total restricted stock units expense	$	766	$	—
Total stock-based compensation	$	972	$	68

Schedule of unrecognized expense for stock options and RSUs

Stock options unrecognized expense (in thousands)	$	1,826
Stock options weighted-average remaining requisite service period (in years)		2.2
Restricted stock units unrecognized expense (in thousands)	$	6,123
Restricted stock units weighted-average remaining requisite service period (in years)		2.6

Schedule of stock options

		Weighted		Aggregate		Weighted
		Average		Intrinsic		Average
	Number of	Exercise Price		Value		Remaining Life
	Options	per Share		(in thousands)		(in years)
Outstanding at January 1, 2022	3,209,517	$	1.66
Granted	—	$	—
Exercised	(24,434)	$	0.23
Forfeited	(37,920)	$	0.22
Expired	(1,469)	$	0.58
Outstanding at March 31, 2022	3,145,694	$	1.69	$	13,394	7.1
Vested and exercisable at March 31, 2022	1,516,647	$	0.56	$	7,859	5.6

Schedule of non-vested share awards

		Weighted
		Average
	Non-vested	Grant Date
	Shares Under	Fair Value per
	Option	Share
Non-vested at January 1, 2022	2,137,050	$	1.21
Granted	—	$	—
Vested	(470,083)	$	0.77
Forfeited	(37,920)	$	0.17
Non-vested at March 31, 2022	1,629,047	$	1.32

Schedule of Black Scholes option pricing model

	Three months ended March 31,
	2021
Expected volatility	68.0 %
Dividend yield	0 %
Risk-free interest rate	0.82 %
Expected term (in years)	6.00	to	6.25

Schedule of Restricted Stock Awards

		Weighted
		Average
		Grant Date
	Number of	Fair Value per
	RSUs	Share
Outstanding at January 1, 2022	935,148	$	7.59
Granted	171,567	$	5.17
Released	(66,417)	$	6.93
Forfeited	(12,026)	$	8.32
Outstanding at March 31, 2022	1,028,272	$	7.22