Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Stock-Based Compensation

Schedule of share-based compensation expense

Stock-based compensation expense was included in general and administrative costs as follows in the accompanying statements of comprehensive loss:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2022		2021		2022		2021
General and administrative	$	218	$	107	$	636	$	474

Schedule of stock option plan activity

The following table summarizes the Company’s activity related to its stock options for the nine months ended September 30, 2022:

				Weighted‑
		Weighted		Average	Aggregate
		Average		Remaining	Intrinsic
	Number of	Exercise		Contractual	Value
	Options	Price		Term (years)	(in thousands)
Outstanding at December 31, 2021	32,498	$	119.72	9.3	$	—
Granted	5,995	$	17.83	—		—
Exercised	-	$	—	—	$	—
Forfeited/Cancelled	(2,000)	$	181.20	—		—
Outstanding at September 30, 2022	36,493	$	99.62	8.8	$	-
Vested and expected to vest at September 30, 2022	36,493	$	99.62	8.8	$	-
Options exercisable at September 30, 2022	8,236	$	234.37	7.5	$	-

Schedule of assumptions used in the Black Scholes option-pricing model

	Nine Months Ended
	September 30,
	2022			2021
Expected stock price volatility		80.7-85.2	%		79	%
Expected life of options (years)		5.5-5.8			5.8
Expected dividend yield		—	%		—	%
Risk free interest rate		1.72-3.08	%		0.9	%