Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Taxes [Abstract]

Schedule of Provision For Income Taxes

The provision for income taxes differs from the amount computed by applying the federal statutory income tax rate to loss before taxes as follows (in thousands):

	Year Ended December 31,
	2023			2022
Federal tax benefit at statutory rate	$	(13,538	)	$	(7,914	)
State taxes		1,112			(4,518	)
Change in fair value of warrant liability		121			(1,512	)
Change in fair value of earnout liability		(4	)		(1,202	)
Non-deductible expenses		(38	)		(108	)
Research and development credits		(1,628	)		(1,835	)
Change in valuation allowance		12,539			16,243
Stock-based compensation		822			—
Other		614			846
Provision for income taxes	$	—		$	—

Schedule of Net Deferred Tax Assets (Liabilities)

Significant components of the Company’s net deferred tax assets (liabilities) as of December 31, 2023 and 2022 were as follows (in thousands):

	December 31,
	2023			2022
Deferred tax assets:
Accrued expenses and other	$	477		$	1,281
Intangibles		313			484
Net operating losses		25,146			20,669
Research and development credits		4,873			3,245
Stock-based compensation		676			985
Lease liability		585			1,090
Section 195 start-up amortization		229			351
Fixed assets		—			99
Capitalized section 174		14,308			6,284
Other		346			—
Total deferred tax assets		46,953			34,488
Valuation allowance		(46,465	)		(33,925	)
Total net deferred tax assets		488			563
Deferred tax liabilities:
Right-of-use asset		(308	)		(563	)
Fixed assets		(180	)		—
Total deferred tax liabilities		(488	)		(563	)
Net deferred tax assets	$	—		$	—

Schedule of Federal and State Net Operating Loss Carryforwards

The following table sets forth the Company’s federal and state net operating loss carryforwards as of December 31, 2023 (in thousands):

	Amount		Expiration Years
Net operating losses, Federal	$	91,357	Do not expire
Net operating losses, states primarily California	$	131,895	2038-2042

Schedule of Unrecognized Tax Benefits

A reconciliation of the beginning and ending balances of the unrecognized tax benefits during the periods ended December 31, 2023 and 2022 is as follows (in thousands):

	Year Ended December 31,
	2023		2022
Balance at beginning of year	$	1,722	$	828
Additions based on tax positions related to current year		698		894
Balance at end of year	$	2,420	$	1,722