Note 7. Fair Value Measurements

We measure fair value based on the prices that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are based on a three-tier hierarchy that prioritizes the inputs used to measure fair value. These tiers include the following:

Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date. The fair value hierarchy gives the highest priority to Level 1 inputs.

Level 2: Observable prices that are based on inputs not quoted on active markets but corroborated by market data. These inputs include quoted prices for similar assets or liabilities; quoted market prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3: Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs.

In determining fair value, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as consider counterparty credit risk in the assessment of fair value.

We did not elect the fair value option, as allowed, to account for financial assets and liabilities that were not previously carried at fair value. Therefore, material financial assets and liabilities that are not carried at fair value, such as trade accounts receivable and payable, are reported at their historical carrying values.

The carrying values of our assets that are required to be measured at fair value on a recurring basis as of December 31, 2025 and 2024 approximate fair value because of our ability to immediately convert these instruments into cash with minimal expected change in value which are classified in the table below in one of the three categories of the fair value hierarchy described above (in thousands):

  ​ ​ ​

Fair Value Measurements

  ​ ​ ​

Level 1

  ​ ​ ​

Level 2

  ​ ​ ​

Level 3

  ​ ​ ​

Total

December 31, 2025

 

Assets:

 

  ​

 

  ​

 

  ​

 

  ​

Money market mutual fund

$

208,124

$

$

$

208,124

Mutual funds

 

99,182

 

 

 

99,182

U.S. Treasury notes

 

19,838

 

 

 

19,838

Corporate debt securities

 

41,694

 

 

 

41,694

$

368,838

$

$

$

368,838

Liabilities:

Convertible Senior Notes

$

$

185,094

$

$

185,094

Contingent consideration

 

 

629

 

629

$

$

185,094

$

629

$

185,723

Fair Value Measurements 

  ​ ​ ​

Level 1

  ​ ​ ​

Level 2

  ​ ​ ​

Level 3

  ​ ​ ​

Total

December 31, 2024

Assets:

 

  ​

 

  ​

 

  ​

 

  ​

Money market mutual fund

$

134

$

$

$

134

Mutual funds

 

97,675

 

 

 

97,675

U.S. Treasury notes

 

41,948

 

 

 

41,948

Corporate debt securities

 

76,837

 

 

 

76,837

$

216,594

$

$

$

216,594

Liabilities:

Convertible Senior Notes

$

$

198,217

$

$

198,217

Contingent consideration

 

 

6,559

 

6,559

$

$

198,217

$

6,559

$

204,776

Our equity securities and available-for-sale debt securities, including U.S. treasury notes and corporate debt securities are valued using inputs observable in active markets for identical securities and are therefore classified as Level 1 within the fair value hierarchy.

We did not have any financial liabilities measured at fair value on a recurring basis as of December 31, 2025 and 2024.

We carry the Convertible Senior Notes at face value less the unamortized discount and issuance costs on our consolidated balance sheets and present fair value for disclosure purposes only, see Note 12 – Convertible Senior Notes for additional information. We estimate the fair value of the Convertible Senior Notes using the net present value of the payments, discounted at an interest rate that is consistent with market and risk-adjusted interest rates, which is a Level 2 input.

The following table presents the estimated fair values and the carrying values (in thousands):

  ​ ​ ​

December 31, 2025

December 31, 2024

  ​ ​ ​

Carrying Value

  ​ ​ ​

Fair Value

  ​ ​ ​

Carrying Value

  ​ ​ ​

Fair Value

2026 Convertible Senior Notes

$

185,094

$

176,579

$

183,919

$

164,525

2025 Convertible Senior Notes

$

$

$

14,298

$

14,125

Under the terms of the F-airGate, Cell&Co, Polar Expres, and Bluebird Express acquisitions, contingent consideration may be payable in cash based on the achievement of certain future revenue and/or EBITDA targets during each annual period following the acquisition dates for a total of four years, up to a maximum of $26.1 million (undiscounted) in the aggregate. The fair value of the contingent consideration was measured at the end of each reporting period using Level 3 inputs. The fair value of the contingent consideration for the F-airGate and Polar Expres acquisitions was determined using a probability-weighted discounted cash flow model.

The fair value of the contingent consideration for the Cell&Co and Bluebird Express acquisitions was valued based on unobservable inputs using a Monte Carlo simulation. These inputs included the estimated amount and timing of projected future revenue, a discount rate, a risk-free rate, asset volatility and revenue volatility. Significant increases (decreases) in any of those inputs in isolation would result in a significantly higher (lower) fair value measurement. The contingent consideration was determined to have an aggregate fair value of $0.6 million and $6.6 million which is reflected as contingent consideration liability in the accompanying consolidated balance sheets as of December 31, 2025 and 2024, respectively. Certain assumptions used in estimating the fair value of the contingent consideration are uncertain by nature. Actual results may differ materially from estimates.

The gains recognized in earnings and the change in net assets related to the contingent consideration at December 31, 2025 were as follows (in thousands):

  ​ ​ ​

Fair Value

  ​ ​ ​

Gains

  ​ ​ ​

Reclassification

  ​ ​ ​

Foreign

  ​ ​ ​

Fair Value

December 31, 

recognized in

to current

currency

December 31, 

2024

earnings

payables

adjustment

2025

2021 Acquisitions

$

909

$

(92)

$

(881)

$

64

$

2022 Acquisitions

 

742

 

(207)

 

 

94

 

629

2023 Acquisitions

4,908

(4,908)

$

6,559

$

(5,207)

$

(881)

$

158

$

629

The net gains recognized in earnings have been reported in operating costs and expenses in the consolidated statement of operations for the year ended December 31, 2025.

Historical Timeline

Fiscal YearFiled
2025Mar 5, 2026Showing above
2024Mar 7, 2025
2023Mar 13, 2024

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.