Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Schedule of common stock warrants

Common stock warrants

As of June 30, 2022, the Company`s outstanding warrants to purchase shares of common stock, consisted of the following:

Issuance Date	Number of Shares of Common Stock Issuable	Exercise Price		Classification	Expiration Date
May 9, 2017	33,964	$	11.31	Equity	May 8, 2027
July 19, 2019	43,878	$	11.31	Equity	July 18, 2029
	77,842

Schedule of Shares Reserved for Future Issuance

The Company has shares of common stock reserved for future issuances as follows:

	June, 30	December, 31
	2022	2021
Warrants to purchase common stock	77,842	77,842
Common stock options issued and outstanding	2,144,984	2,175,685
Common stock available for future grants	569,962	1,934,095
Restricted stock units issued and outstanding	1,755,543	394,750
Common stock available for ESPP	401,164	401,164

Schedule of Stock Option Activity

A summary of stock option activity is set forth below (in thousands, except share and per share data):

	Number of Shares Underlying Outstanding Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Outstanding, December 31, 2021	2,175,685	$	9.27	8.7	$	2,856
Options granted	79,100	$	4.06
Options exercised	(34,041)	$	0.61
Options forfeited or cancelled	(75,760)	$	7.99
Outstanding, June 30, 2022	2,144,984	$	9.26	8.3	$	983
Shares exercisable June 30, 2022	1,570,397	$	9.51	8.0	$	788
Vested and expected to vest, June 30, 2022	2,144,984	$	9.26	8.3	$	983

Schedule of Restricted Stock Units Activity

A summary of RSU activity is set forth below (in thousands, except share and per share data):A summary of RSU activity is set forth below (in thousands, except share and per share data):

	Number of Shares Underlying Outstanding Restricted Stock			Weighted Average Grant Date Fair Value
Unvested, January 1, 2022		394,750		$	5.17
Granted		1,398,673		$	2.58
Forfeited or cancelled		(37,880	)	$	3.47
Unvested, June 30, 2022		1,755,543		$	3.15

Summary of Stock-Based Compensation Expense

Total stock-based compensation expense recognized was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of goods sold	$	74	$	155	$	143	$	170
Sales and marketing		598		1,232		1,189		1,295
Research and development		15		118		29		119
General and administrative		989		2,973		1,838		3,025
Total	$	1,676	$	4,478	$	3,199	$	4,609

The above stock-based compensation expense related to the following equity-based awards (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Stock options	$	989	$	4,478	$	2,015	$	4,609
RSU		633		—		1,130		—
ESPP		54		—		54		—
Total	$	1,676	$	4,478	$	3,199	$	4,609

Schedule of Fair Value of Stock Options Estimated Using Weighted-Average Assumptions

The fair value of stock options was estimated using the following weighted-average assumptions:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Expected dividends		0%		0%		0%		0%
Expected volatility		70.8%-70.8%		73.3% - 75.0%		70.8%-70.8%		72.8% - 75.0%
Risk-free interest rate		3.0%-3.0%		0.9% - 1.1%		1.9%-3.0%		0.6% - 1.1%
Expected term		6 years		5 - 6 years		6 years		5 - 6 years