5. Fair Value Measurements
Recurring Fair Value Measurements
The Company measures and reports certain assets and liabilities at fair value on a recurring basis. The fair value of these assets and liabilities as of December 31, 2025 and December 31, 2024 are classified as follows (in thousands):

As of December 31, 2025
Level 1Level 2Level 3Total
Assets:
Money market funds$332,808 $— $— $332,808 
Convertible Note Investment
— — 24,726 24,726 
Total assets$332,808 $— $24,726 $357,534 
As of December 31, 2024
Level 1Level 2Level 3Total
Assets:
Money market funds$133,959 $— $— $133,959 
Total assets$133,959 $— $— $133,959 
The change in fair value of the Level 3 instruments were as follows (in thousands):
As of December 31, 2025
Convertible Note Investment
Fair value, beginning of the year
$— 
Initial investment
25,000 
Changes in fair value(274)
Fair value, end of period
$24,726 
As of December 31, 2024
Derivative
Liability
September 2021 Convertible Notes
Fair value, beginning of the year217 3,449 
Changes in fair value1,707 608 
Settlement of September 2021 Convertible Notes upon conversion (Note 8)
— (3,548)
Gain on settlement of September 2021 Convertible Notes (Note 8)
— (509)
Gain on settlement of derivative liability (Note 9)
(1,924)— 
Fair value, end of period$— $— 
For the year ended December 31, 2025, the Company recorded a loss associated with the change in fair value of the Convertible Note Investment of $0.3 million. The amounts have been recorded in other income (expense), net in the consolidated statement of operations and comprehensive income (loss).
For the year ended December 31, 2024, the Company recorded a loss associated with the change in fair value of the derivative liability of $1.7 million and a gain related to the settlement of the derivative liability upon conversion of the July 2021 Convertible Notes of $1.9 million. For the year ended December 31, 2024, the Company recorded a loss associated with the change in fair value of the September 2021 Convertible Notes of $0.6 million and a gain related to the settlement of the September 2021 Convertible Notes upon conversion of $0.5 million. The amounts have been recorded in other income (expense), net in the consolidated statement of operations and comprehensive income (loss).
Non-Recurring Fair Value Measurements
In April 2025, a related party completed a qualified equity financing and the Related Party SAFE was converted into the Related Party Investment. The conversion resulted in an observable price change based on the financing round for identical preferred shares. As a result, a $0.9 million gain on the change in the fair value of the investment was recorded within other income (expense), net on the consolidated statements of operations and comprehensive income (loss) for the year ended December 31, 2025. The Related Party Investment is classified within Level 2 of the fair value hierarchy as the valuation is based on an observable price for identical shares that are not readily determinable. The Related Party Investment balance as of December 31, 2025 was $5.9 million and is included within prepaid expenses and other assets, noncurrent on the consolidated balance sheet.

Historical Timeline

Fiscal YearFiled
2025Mar 2, 2026Showing above
2024Feb 27, 2025
2023Feb 29, 2024
2022Mar 23, 2023

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.