Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of the components of the provision for income taxes

The components of the provision for income taxes consisted of the following (in thousands):

	Year ended December 31,
	2022		2021
Provision for federal income taxes	$	—	$	—
Provision for state income taxes	—		—
Provision for income taxes	$	—	$	—

Schedule of tax rate reconciliation

The reconciliation of taxes at the statutory rate to our provision for income taxes was as follows (in thousands):

	Year ended December 31,
	2022		2021
Tax at the statutory rate	$	(102,416)	$	(72,821)
State tax – net of federal benefit	(25,118)		(21,015)
Officer compensation	6,750		6,749
Earnout Liability	(5,469)		(21,934)
Stock Compensation	5,024		9,136
Provision to Return	(2,958)		(330)
U.S. Tax Credits	(8,929)		(4,528)
Other Rate Impacting Items	2,328		988
Change in valuation allowance	130,788		103,755
Provision for income taxes	$	—	$	—

Schedule of deferred income tax assets and liabilities

Deferred tax assets and liabilities consisted of the following (in thousands):

	December 31,
Deferred Tax Assets:	2022		2021
Net operating loss carry-forwards	$	257,062	$	165,032
Capitalized research and development costs	35,295		—
Research and development credits	25,237		12,864
Stock-based compensation	10,167		6,264
Other	1,674		1,207
Total gross deferred income tax assets	329,435		185,367
Less: Valuation allowance	(316,155)		(185,367)
Deferred tax assets, net of valuation allowance	$	13,280	$	—
Deferred Tax Liabilities:
Warrants	$	(13,280)	$	—
Total deferred tax liabilities	$	(13,280)	$	—
Total net deferred tax assets (liabilities):	$	—	$	—

Schedule of valuation allowance on the deferred income tax assets

The following table summarizes the activity recorded in the valuation allowance on the deferred income tax assets (in thousands):

Valuation allowance at December 31, 2020	$	(81,968)
Additions charged to income tax provision	(103,755)
Other changes to valuation allowance	356
Valuation allowance at December 31, 2021	(185,367)
Additions charged to income tax provision	(130,788)
Valuation allowance at December 31, 2022	$	(316,155)

Schedule of unrecognized tax benefits

The aggregate changes in the balance of gross unrecognized tax benefits during the years ended December 31, 2022 and 2021 were as follows (in thousands):

Balance at December 31, 2020	$	(35,558)
Increases in balances related to tax provisions taken during current period	(4,529)
Increases related to changes in estimates	(640)
Other decreases	469
Balance at December 31, 2021	(40,258)
Increases in balances related to tax positions taken during current period	(9,179)
Increases related to changes in estimates	(3,444)
Other decreases	56
Balance at December 31, 2022	$	(52,825)