5. Fair Value Measurements

The following tables presents the Company’s financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2025 and 2024 (in thousands):

 

 

 

 

 

 

Fair Value Measurements at
Reporting Date Using

 

 

 

Total

 

 

Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)

 

 

Significant
Other
Observable
Inputs
(Level 2)

 

 

Significant
Unobservable
Inputs
(Level 3)

 

As of December 31, 2025:

 

 

 

 

 

 

 

 

 

 

 

 

Financial assets:

 

 

 

 

 

 

 

 

 

 

 

 

Money market fund

 

$

31,693

 

 

$

31,693

 

 

$

 

 

$

 

U.S. Treasury debt securities

 

 

33,779

 

 

 

33,779

 

 

 

 

 

 

 

Non-US government securities

 

 

3,247

 

 

 

 

 

 

3,247

 

 

 

 

Corporate debt securities

 

 

87,710

 

 

 

 

 

 

87,710

 

 

 

 

Commercial paper

 

 

41,941

 

 

 

 

 

 

41,941

 

 

 

 

Total assets measured at fair value on a recurring basis

 

$

198,370

 

 

$

65,472

 

 

$

132,898

 

 

$

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Financial liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Stock price appreciation milestones

 

$

283

 

 

$

 

 

$

 

 

$

283

 

Total financial liabilities measured at fair value on a recurring basis

 

$

283

 

 

$

 

 

$

 

 

$

283

 

 

 

 

 

 

 

 

 

 

 

 

 

 

As of December 31, 2024:

 

 

 

 

 

 

 

 

 

 

 

 

Financial assets:

 

 

 

 

 

 

 

 

 

 

 

 

Money market fund

 

$

29,491

 

 

$

29,491

 

 

$

 

 

$

 

U.S. Treasury debt securities

 

 

50,036

 

 

 

50,036

 

 

 

 

 

 

 

Non-US government securities

 

 

2,995

 

 

 

 

 

 

2,995

 

 

 

 

Municipal securities

 

 

2,492

 

 

 

 

 

 

2,492

 

 

 

 

Corporate debt securities

 

 

188,239

 

 

 

 

 

 

188,239

 

 

 

 

Commercial paper

 

 

26,907

 

 

 

 

 

 

26,907

 

 

 

 

Total assets measured at fair value on a recurring basis

 

$

300,160

 

 

$

79,527

 

 

$

220,633

 

 

$

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Financial liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Stock price appreciation milestones

 

$

527

 

 

$

 

 

$

 

 

$

527

 

Total financial liabilities measured at fair value on a recurring basis

 

$

527

 

 

$

 

 

$

 

 

$

527

 

 

Level 1 assets consisted of money market funds and U.S. Treasury securities measured at fair value based on quoted prices in active markets as provided by the Company’s investment managers.

Level 2 assets consisted of corporate debt securities, commercial paper, municipal securities, and non-U.S. government securities measured at fair value using standard observable inputs, including reported trades, broker/dealer quotes, and bids and/or offers. The Company validates the quoted market prices provided by its investment managers by comparing the investment managers’

assessment of the fair values of the Company’s investment portfolio balance against the fair values of the Company’s investment portfolio balance obtained from an independent source.

There were no Level 3 assets held by the Company as of December 31, 2025.

Level 3 liabilities consisted of stock price appreciation milestones associated with the Amended MSKCC License as described in detail in Note 2.

The following table presents the changes in fair value of the Company’s Level 3 stock price appreciation milestones liability (in thousands):

 

Balance at December 31, 2023

 

$

1,346

 

Changes in fair value of stock price appreciation milestones liability

 

 

(819

)

Balance at December 31, 2024

 

$

527

 

Changes in fair value of stock price appreciation milestones liability

 

 

(244

)

Balance at December 31, 2025

 

$

283

 

None of the Company’s non-financial assets or liabilities are recorded at fair value on a non-recurring basis. No transfers between levels have occurred during the periods presented.

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2023Feb 26, 2024
2022Feb 28, 2023
2021Feb 28, 2022
2020Feb 24, 2021

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.