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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Summary of Net Deferred Tax Assets

Significant components of the Company’s net deferred tax assets consist of the following (in thousands):

		December 31,
		2022				2021
Deferred tax assets:
Net operating loss carryforwards		$	32,985			$	31,826
Section 174 capitalized expense			6,812				—
Research and development credits			3,775				2,392
Lease liabilities			1,096				1,521
Accrual and reserves			739				590
Employee retention credits			271				284
Stock-based compensation			201				129
Capitalized intangible costs			176				122
Fixed assets			66				—
Other			3				3
Gross deferred tax assets			46,124				36,867
Less: valuation allowance			(45,343	)			(35,665	)
Deferred tax assets, net of valuation allowance			781				1,202
Deferred tax liabilities:
Right-of-use assets			(686	)			(962	)
Fixed assets			—				(101	)
Other			(95	)			(139	)
Gross deferred tax liabilities			(781	)			(1,202	)
Total net deferred tax assets		$	—			$	—

Summary of Unrecognized Tax Benefits

A reconciliation of the Company’s unrecognized tax benefits is as follows (in thousands):

		December 31,
		2022				2021
Balance at beginning of the year		$	974			$	921
Additions based on tax positions related to current year			654				480
Reductions based on tax positions of prior year			—				(427	)
Balance at end of the year		$	1,628			$	974

Schedule of Reconciliation of U.S. Federal Statutory Income Tax Rate TO Effective Income Tax Rate

A reconciliation of the statutory U.S. federal tax rate to the Company’s effective tax rate is as follows:

		December 31,
		2022				2021
Statutory rate			21.00	%			21.00	%
State tax			2.12				(2.78	)
Tax credits			1.72				1.70
Stock-based compensation			(2.26	)			—
Change in valuation allowance			(26.88	)			(16.92	)
NOL and tax credits limited under 382			—				(2	)
Gain on warrant liabilities			4.60				—
Other			(0.30	)			(0.57	)
Total			0.00	%			0.00	%

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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