Preferred Stock and Stockholders' Deficit (Tables)

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Summary of option activity under the company's plans

A summary of the Company’s stock option activity under the plans is as follows (in thousands, except share and per share amounts and years):

	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at December 31, 2022		8,738,880		$	2.73		7.4	$	—
Granted		3,790,001			0.52		9.4
Exercised		(89,807	)		0.52		—
Cancelled or forfeited		(403,310	)		2.28		7.1
Outstanding at September 30, 2023		12,035,764		$	2.07		7.5	$	437
Vested and exercisable at September 30, 2023		6,600,679		$	2.32		6.3	$	103

Schedule of assumptions used in the Black-Scholes option pricing model to determine the fair value of the stock option grants.

	Nine Months Ended September 30,
	2023	2022
Risk-free interest rate	3.6% - 4.4%	1.7% - 4.1%
Expected volatility	84% - 85%	82% - 86%
Expected term (in years)	5.3 - 6.1	5.2 - 6.1
Expected dividend yield	0%	0%

Schedule of Common Stock, Reserved for Future Issuance

Common stock reserved for future issuance consists of the following as of September 30, 2023:

	September 30, 2023
Stock options issued and outstanding		12,035,764
Public warrants issued and outstanding		5,833,323
Private placement warrants issued and outstanding		181,667
Common stock warrants issued and outstanding		19,214,827
Placement agent warrants issued and outstanding		1,345,038
Unvested sponsor shares		300,000
Authorized for future stock awards or option grants		2,398,279
Authorized for future issuances under the ESPP		1,524,183
Total		42,833,081