3.
Fair Value Measurement

The Company’s financial assets and liabilities measured at fair value on a recurring basis were as follows (in thousands):

 

 

 

As of December 31, 2025

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

Assets:

 

 

 

 

 

 

 

 

 

Cash equivalents

 

$

2,016,705

 

 

$

-

 

 

$

-

 

Total assets measured at fair value

 

$

2,016,705

 

 

$

-

 

 

$

-

 

 

 

 

 

 

 

 

 

 

 

Liabilities:

 

 

 

 

 

 

 

 

 

Private placement warrant liability

 

 

-

 

 

 

-

 

 

 

7,471

 

Total liabilities measured at fair value

 

$

-

 

 

$

-

 

 

$

7,471

 

 

 

 

As of December 31, 2024

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

Assets:

 

 

 

 

 

 

 

 

 

Cash equivalents

 

$

510,424

 

 

$

-

 

 

$

-

 

Total assets measured at fair value

 

$

510,424

 

 

$

-

 

 

$

-

 

 

 

 

 

 

 

 

 

 

 

Liabilities:

 

 

 

 

 

 

 

 

 

Private placement warrant liability

 

 

-

 

 

 

-

 

 

 

41,248

 

Total liabilities measured at fair value

 

$

-

 

 

$

-

 

 

$

41,248

 

 

As of December 31, 2025 and December 31, 2024, the Company had $2.8 billion and $567.5 million of cash and cash equivalents and restricted cash, respectively, of which $2.0 billion and $510.4 million, respectively, were classified as cash equivalents, which consisted principally of short-term money market funds with original maturities of 90 days or less. As of December 31, 2025, non-current restricted cash of $443.4 million consisted of the cash collateral for the UBS Bridge Financing Loan and $15.0 million collateral for the capital equipment loan with Prosperity Bank, and current restricted cash of $0.9 million consisted of deposits against the bank guaranty issued to the landlords for lease of properties. As of December 31, 2024, restricted cash of $2.5 million consisted of a deposit into an interest reserve escrow account for the terminated senior secured credit facility and a deposit against the bank guaranty issued to the landlord for lease of a property. For certain instruments, including cash, accounts payable, and accrued expenses, it was estimated that the carrying amount approximated fair value because of the short maturities of these instruments.

As of December 31, 2025 and December 31, 2024, warrant liabilities were comprised of private placement warrants (“Private Placement Warrants”), which have been classified as Level 3 due to the use of historical volatility of the Company’s shares and implied volatility derived from options on the Company’s shares. Warrant liabilities are described in detail in Note 8 Warrant Liabilities.

The Private Placement Warrants are valued using a Black-Scholes-Merton model. The Company’s Black-Scholes-Merton model to value Private Placement Warrants required the use of the following subjective assumption inputs:

As of December 31, 2025, the risk-free rate assumption was based on the three-month and one-year U.S. Treasury rates as the estimated time to expiration was 0.26 years (compared to being based on the one- and two-year U.S. Treasury rates based on an estimated time to expiration of 1.26 years as of December 31, 2024). An increase in the risk-free interest rate, in isolation, would result in an increase in the fair value measurement of the warrant liabilities and vice versa.
As of December 31, 2025 and December 31, 2024, the expected volatility assumption was based on an average of the historical volatility of the Company’s shares and the implied volatility of one-year options on the Company’s shares, which was 105.3% and 112.7%, respectively.

Historical Timeline

Fiscal YearFiled
2025Mar 2, 2026Showing above
2024Mar 3, 2025
2023Apr 1, 2024
2022Mar 31, 2023
2021Mar 31, 2022
2020Mar 1, 2021
2019Mar 30, 2020

About Fair Value Disclosures

Fair value disclosures classify all assets and liabilities measured at fair value into a three-level hierarchy: Level 1 (quoted market prices), Level 2 (observable inputs like yield curves), and Level 3 (unobservable inputs requiring management estimates). The proportion of Level 3 assets directly reflects how much of the balance sheet depends on internal models rather than market evidence.

Key signals: a growing Level 3 balance relative to total fair-value assets increases valuation uncertainty and earnings volatility risk. Watch for transfers between levels — assets moving from Level 2 to Level 3 often signal deteriorating market liquidity. Unrealized gains and losses on Level 3 positions flow through earnings or other comprehensive income, so large swings deserve scrutiny. For financial institutions, examine the sensitivity disclosures that show how Level 3 valuations change under alternative assumptions. Compare the fair value of debt against its carrying amount to gauge hidden leverage.