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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Property, Plant and Equipment

Depreciation of property, plant and equipment is calculated using the straight-line method over the estimated useful lives of the assets, as follows:

Buildings						39 years
Software						3 years
Laboratory equipment						5 to 7 years
Furniture & fixtures						5 years
IT equipment						3 years
Leasehold improvements						The lesser of the lease term or life of the asset

Property, plant and equipment, net, consist of the following (in thousands):

			As of December 31,
			2023						2022
Leasehold improvements			$	72,552					$	68,710
Equipment			69,915						67,945
Construction in progress			84,436						72,693
Software			1,666						1,657
Furniture & fixtures			1,889						1,906
Gross property, plant and equipment			230,458						212,911
Less: Accumulated depreciation and amortization			84,376						69,252
Property, plant and equipment, net			$	146,082					$	143,659

Schedule of Securities Excluded from the Computation of Potentially Dilutive Securities

The following table details those securities that have been excluded from the computation of potentially dilutive securities:

			As of December 31,
			2023						2022						2021
Related-party convertible notes			162,471,837						46,274,965						—
Outstanding third-party warrants			37,732,820						9,090,909						—
Outstanding stock options			9,820,435						9,262,926						4,124,930
Outstanding RSUs			7,503,979						6,551,388						6,515,889
Outstanding related-party warrants			1,638,000						1,638,000						1,638,000
Total			219,167,071						72,818,188						12,278,819

Schedule of Revenue by Geographic Region

We generate a portion of our revenues from outside of the U.S. Information about our revenues by geographic region is as follows (in thousands):

			Year Ended December 31,
			2023						2022						2021
United States			$	31					$	42					$	373
Europe			591						198						561
Total segment revenue			$	622					$	240					$	934

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Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

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Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

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