Financial Instruments
Fair Value Measurements
The following table presents the Company’s financial assets measured at fair value on a recurring basis, as well as the amortized cost basis and gross unrealized gains and losses of those assets as of December 31, 2025 (in thousands):
Balance Sheet Classification
Amortized Cost BasisGross Unrealized GainsGross Unrealized LossesFair ValueCash and Cash EquivalentsMarketable Securities
Level 1:
Cash$158,093 $— $— $158,093 $158,093 $— 
Money market mutual funds22,336 — — 22,336 22,336 — 
U.S. treasury securities99,553 38 — 99,591 — 99,591 
Subtotal279,982 38 — 280,020 180,429 99,591 
Level 2:
Commercial paper29,569 — — 29,569 3,782 25,787 
Corporate notes and obligations87,221 12 (21)87,212 3,817 83,395 
Asset-backed securities12,334 (1)12,336 — 12,336 
Subtotal129,124 15 (22)129,117 7,599 121,518 
Total cash, cash equivalents, and marketable securities$409,106 $53 $(22)$409,137 $188,028 $221,109 
As of December 31, 2024, the Company’s financial assets consisted of the following (in thousands):
Balance Sheet Classification
Amortized Cost BasisGross Unrealized GainsGross Unrealized LossesFair ValueCash and Cash EquivalentsMarketable Securities
Level 1:
Cash$176,987 $— $— $176,987 $176,987 $— 
Money market mutual funds18,721 — — 18,721 18,721 — 
U.S. treasury securities149,555 73 — 149,628 — 149,628 
Subtotal345,263 73 — 345,336 195,708 149,628 
Level 2:
Commercial paper11,688 — — 11,688 1,337 10,351 
Certificates of deposit3,987 — — 3,987 — 3,987 
Corporate notes and obligations135,302 17 (40)135,279 21,387 113,892 
Asset-backed securities9,585 — 9,591 — 9,591 
Subtotal160,562 23 (40)160,545 22,724 137,821 
Total cash, cash equivalents, and marketable securities$505,825 $96 $(40)$505,881 $218,432 $287,449 
The Company’s money market mutual funds and treasury securities are measured at fair value using quoted prices in active markets for identical assets and are classified within Level 1 in the fair value hierarchy. The fair values of the Company’s Level 2 commercial paper and certificates of deposit are determined using quoted prices in markets that are not active or using model-driven valuations employing significant inputs derived from observable market data. The fair values of the Company’s Level 2
corporate notes and obligations and asset-backed securities are determined using an evaluated price based on a compilation of reported market information, such as benchmark yield curves, credit spreads and estimated default rates.
The carrying amounts of the Company’s remaining financial instruments not discussed in the above table, including accounts receivable and accounts payable, approximate fair value because of their short-term maturities, except for the Company’s senior unsecured notes due 2030 (the “Notes”) which are valued on a quarterly basis for disclosure purposes only based on quoted prices for the Notes in less active markets and categorized accordingly as Level 2 in the fair value hierarchy. The aggregate fair value of the Notes was estimated to be approximately $429.0 million as of December 31, 2025, and approximately $496.4 million as of December 31, 2024.
Certain assets, including operating leases, long-lived assets, and goodwill, are also subject to measurement at fair value on a non-recurring basis using Level 2 or Level 3 inputs, respectively, but only when they are deemed to be impaired. As of December 31, 2025 and December 31, 2024, no material impairments were identified on those assets required to be measured at fair value on a non-recurring basis.
Equity Securities
The Company’s investments in equity securities consist primarily of money market mutual funds. During the years ended December 31, 2025, 2024, and 2023, the Company recorded no material unrealized gains and losses in connection with its money market mutual funds held as of December 31, 2025.
Available-for-sale Debt Securities
The following table summarizes the fair value of the Company’s available-for-sale debt securities by contractual maturity as of December 31, 2025 (in thousands):
Due within 1 year$210,114 
Due after 1 year through 5 years18,594 
Total available-for-sale debt securities$228,708 
Actual maturities may differ from contractual maturities because certain borrowers have the right to call or prepay certain obligations.
The following table summarizes the available-for-sale debt securities which have been in a continuous unrealized loss position for less than 12 months as of December 31, 2025 and 2024 (in thousands):
December 31,
2025
2024
Fair ValueGross Unrealized LossesFair ValueGross Unrealized Losses
Corporate notes and obligations37,956 (21)74,872 (40)
Asset-backed securities6,411 (1)— — 
Total available-for-sale debt securities$44,367 $(22)$74,872 $(40)
The Company had no available-for-sale debt securities in a continuous unrealized loss position for more than 12 months as of December 31, 2025 and 2024.
The Company did not recognize any credit losses for its available-for-sale debt securities during the years ended December 31, 2025, 2024, and 2023.
During the year ended December 31, 2025, the Company recorded $1.0 million in proceeds related to sales of its available-for-sale debt securities. The Company recorded no material gross realized gains or gross realized losses in its Consolidated Statements of Operations as a result of those sales. During the years ended December 31, 2024 and December 31, 2023, the Company did not have any sales of its available-for-sale debt securities.

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.