3. Fair Value Measurements

The following tables represent the Company’s fair value hierarchy for financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2024 and 2023 (in thousands):

 

 

 

Basis for Fair Value Measurements

 

 

Fair Value as of

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

December 31, 2024

 

Assets

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds

 

$

142,621

 

 

$

 

 

$

 

 

$

142,621

 

Certificates of deposit

 

 

 

 

 

47,647

 

 

 

 

 

 

47,647

 

Commercial paper

 

 

 

 

 

60,202

 

 

 

 

 

 

60,202

 

Corporate bonds

 

 

 

 

 

216,165

 

 

 

 

 

 

216,165

 

U.S.Treasuries

 

 

 

 

 

32,110

 

 

 

 

 

 

32,110

 

Total

 

$

142,621

 

 

$

356,124

 

 

$

 

 

$

498,745

 

Liabilities

 

 

 

 

 

 

 

 

 

 

 

 

Derivative liability

 

$

 

 

$

 

 

$

410

 

 

$

410

 

Total

 

$

 

 

$

 

 

$

410

 

 

$

410

 

 

 

 

 

Basis for Fair Value Measurements

 

 

Fair Value as of

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

December 31, 2023

 

Assets

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds

 

$

217,644

 

 

$

 

 

$

 

 

$

217,644

 

Commercial paper

 

 

 

 

 

18,243

 

 

 

 

 

 

18,243

 

Corporate bonds

 

 

 

 

 

28,939

 

 

 

 

 

 

28,939

 

U.S. government sponsored
    agencies

 

 

 

 

 

2,896

 

 

 

 

 

 

2,896

 

Total

 

$

217,644

 

 

$

50,078

 

 

$

 

 

$

267,722

 

Liabilities

 

 

 

 

 

 

 

 

 

 

 

 

Derivative liability

 

$

 

 

$

 

 

$

369

 

 

$

369

 

Total

 

$

 

 

$

 

 

$

369

 

 

$

369

 

Level 3 Inputs

The fair value of the derivative liability is based on significant inputs not observable in the market, which represent a Level 3 measurement within the fair value hierarchy. The fair value of the derivative liability was determined using a present value analysis with multiple scenarios. In determining the fair value of the derivative liability, the inputs impacting fair value include the change of control payment to Cystic Fibrosis Foundation, the probability of a change of control event, the product status at time of a change of control event and the discount rate. See Note 15 for further discussion on the embedded derivative.

There were no transfers between Level 1, 2 and 3 during the periods presented.

The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 derivative liability (in thousands):

 

Balance as of December 31, 2022

 

$

212

 

Change in fair value included in other income (expense), net

 

 

157

 

Balance as of December 31, 2023

 

 

369

 

Change in fair value included in other income (expense), net

 

 

41

 

Balance as of December 31, 2024

 

$

410

 

 

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.