Note 3. Available-for-sale Securities and Fair Value on Financial Instruments

Available-for-sale Securities

The following is a summary of available-for-sale securities at December 31, 2025 (in thousands):

 

 

 

December 31, 2025

 

 

 

Amortized
Cost

 

 

Gross
Unrealized Gain

 

 

Gross
Unrealized Loss

 

 

Fair Value

 

Money market funds

 

$

1,810

 

 

$

 

 

$

 

 

$

1,810

 

United States government agency securities

 

 

23,431

 

 

 

49

 

 

 

(1

)

 

 

23,479

 

Corporate debt securities

 

 

36,768

 

 

 

55

 

 

 

(1

)

 

 

36,822

 

Mortgage-backed securities

 

 

2,795

 

 

 

7

 

 

 

(185

)

 

 

2,617

 

Total available-for-sale securities

 

$

64,804

 

 

$

111

 

 

$

(187

)

 

$

64,728

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The following is a summary of available-for-sale securities at December 31, 2024 (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2024

 

 

 

Amortized
Cost

 

 

Gross
Unrealized Gain

 

 

Gross
Unrealized Loss

 

 

Fair Value

 

Money market funds

 

$

1,773

 

 

$

 

 

$

 

 

$

1,773

 

United States government agency securities

 

 

24,060

 

 

 

54

 

 

 

(52

)

 

 

24,062

 

Corporate debt securities

 

 

33,357

 

 

 

53

 

 

(39

)

 

 

33,371

 

Mortgage-backed securities

 

 

3,070

 

 

 

 

 

(317

)

 

 

2,753

 

Total available-for-sale securities

 

$

62,260

 

 

$

107

 

 

$

(408

)

 

$

61,959

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Available-for-sale securities at December 31, 2025 and December 31, 2024, consisted of the following by contractual maturity (in thousands):

 

 

December 31, 2025

 

 

December 31, 2024

 

 

 

Amortized Cost

 

 

Fair Value

 

 

Amortized Cost

 

 

Fair Value

 

One year or less

 

$

46,128

 

 

$

46,209

 

 

$

38,174

 

 

$

38,173

 

Greater than one year and less than five years

 

 

18,676

 

 

 

18,519

 

 

 

24,086

 

 

 

23,786

 

Total available-for-sale securities

 

$

64,804

 

 

$

64,728

 

 

$

62,260

 

 

$

61,959

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The following tables show all available-for-sale marketable securities in an unrealized loss position for which an allowance for credit losses has not been recognized and the related gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

 

 

December 31, 2025

 

 

Less than 12 Months

 

 

12 Months or Greater

 

 

Total

 

 

Fair Value

 

 

Unrealized Loss

 

 

Fair Value

 

 

Unrealized Loss

 

 

Fair Value

 

 

Unrealized Loss

 

Corporate debt securities

$

3,203

 

 

$

(1

)

 

$

 

 

$

 

$

3,203

 

$

(1

)

United States government agency securities

 

 

 

 

 

 

 

260

 

 

 

(1

)

 

260

 

 

(1

)

Mortgage-backed securities

 

214

 

 

 

(1

)

 

 

2,219

 

 

 

(184

)

 

2,433

 

 

(185

)

    Total

$

3,417

 

$

(2

)

$

2,479

 

$

(185

)

$

5,896

 

$

(187

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2024

 

 

Less than 12 Months

 

 

12 Months or Greater

 

 

Total

 

 

Fair Value

 

 

Unrealized Loss

 

 

Fair Value

 

 

Unrealized Loss

 

 

Fair Value

 

 

Unrealized Loss

 

Corporate debt securities

$

14,002

 

$

(27

)

$

3,967

 

$

(12

)

$

17,969

 

$

(39

)

United States government agency securities

 

8,468

 

 

(37

)

 

3,279

 

 

(15

)

 

11,747

 

 

(52

)

Mortgage-backed securities

 

402

 

 

(10

)

 

2,351

 

 

(307

)

 

2,753

 

 

(317

)

    Total

$

22,872

 

$

(74

)

$

9,597

 

$

(334

)

$

32,469

 

$

(408

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Company typically invests in highly-rated securities, and its investment policy limits the amount of credit exposure to any one issuer. The policy generally requires investments to be investment grade, with the primary objective of minimizing the potential risk of principal loss. Fair values were determined for each individual security in the investment portfolio. When evaluating an investment for expected credit losses, the Company reviews factors such as the length of time and extent to which fair value has been below its cost basis, the financial condition of the issuer and any changes thereto, changes in market interest rates, and the Company’s intent to sell, or whether it is more likely than not it will be required to sell, the investment before recovery of the investment’s cost basis. The Company also regularly reviews its investments in an unrealized loss position and evaluates the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, and current economic conditions. During the years ended December 31, 2025, 2024 and 2023, the Company did not recognize any expected credit losses. The Company has no current requirement or intent to sell the securities in an unrealized loss position. The Company expects to recover up to (or beyond) the initial cost of investment for securities held.

 

The Company recorded less than $0.1 million of gross realized gains from the sale or maturity of available-for-sale investments during the years ended December 31, 2025, 2024 and 2023, respectively. The Company recorded less than $0.1 million of gross realized losses from the sale or maturity of available-for-sale investments during the years ended December 31, 2025, 2024 and 2023, respectively.

Fair Value Disclosures

The Company uses certain assumptions that market participants would use to determine the fair value of an asset or liability in pricing the asset or liability in an orderly transaction between market participants at the measurement date. The identification of market participant assumptions provides a basis for determining what inputs are to be used for pricing each asset or liability. A fair value hierarchy has been established which gives precedence to fair value measurements calculated using observable inputs over those using unobservable inputs. This hierarchy prioritized the inputs into three broad levels as follows:

Level 1: Quoted prices in active markets for identical instruments
Level 2: Other significant observable inputs (including quoted prices in active markets for similar instruments)
Level 3: Significant unobservable inputs (including assumptions in determining the fair value of certain investments)

Money market funds are highly liquid investments and are actively traded. The pricing information on these investment instruments are readily available and can be independently validated as of the measurement date. This approach results in the classification of these securities as Level 1 of the fair value hierarchy.

To estimate the fair value of Level 2 debt securities as of December 31, 2025, the Company’s primary pricing service relies on inputs from multiple industry-recognized pricing sources to determine the price for each investment. Corporate debt and U.S. government agency securities are systematically priced by this service as of the close of business each business day. If the primary pricing service does not price a specific asset a secondary pricing service is utilized.

The fair values of the Company’s financial assets and liabilities were determined using the following inputs at December 31, 2025 (in thousands):

 

 

Balance sheet

 

 

 

 

Quoted
Prices in
Active
Markets for Identical
Assets

 

 

Significant
Other
Observable
Inputs

 

 

Significant Unobservable Inputs

 

 

 

classification

 

Total

 

 

(Level 1)

 

 

(Level 2)

 

 

(Level 3)

 

Money market funds

 

Cash and cash equivalents

 

$

1,810

 

 

$

1,810

 

 

$

 

 

$

 

United States government agency securities

 

Short-term investments

 

 

23,479

 

 

 

 

 

 

23,479

 

 

 

 

Corporate debt securities

 

Short-term investments

 

 

36,822

 

 

 

 

 

 

36,822

 

 

 

 

Mortgage-backed securities

 

Short-term investments

 

 

2,617

 

 

 

 

 

 

2,617

 

 

 

 

Total short-term investments

 

 

 

$

64,728

 

 

$

1,810

 

 

$

62,918

 

 

$

 

 

The fair values of the Company’s financial assets and liabilities were determined using the following inputs at December 31, 2024 (in thousands):

 

 

Balance sheet

 

 

 

 

Quoted
Prices in
Active
Markets for Identical
Assets

 

 

Significant
Other
Observable
Inputs

 

 

Significant Unobservable Inputs

 

 

 

classification

 

Total

 

 

(Level 1)

 

 

(Level 2)

 

 

(Level 3)

 

Money market funds

 

Cash and cash equivalents

 

$

1,773

 

 

$

1,773

 

 

$

 

 

$

 

United States government agency securities

 

Short-term investments

 

 

24,062

 

 

 

 

 

 

24,062

 

 

 

 

Corporate debt securities

 

Short-term investments

 

 

33,371

 

 

 

 

 

 

33,371

 

 

 

 

Mortgage-backed securities

 

Short-term investments

 

 

2,753

 

 

 

 

 

 

2,753

 

 

 

 

Total short-term investments

 

 

 

$

61,959

 

 

$

1,773

 

 

$

60,186

 

 

$

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Company did not have any transfers among fair value measurement levels during the years ended December 31, 2025 and December 31, 2024.

Historical Timeline

Fiscal YearFiled
2025Mar 2, 2026Showing above
2024Feb 26, 2025
2023Mar 5, 2024
2022Mar 1, 2023
2021Feb 22, 2022
2020Feb 25, 2021
2019Feb 21, 2020
2018Feb 27, 2019
2017Mar 8, 2018
2016Mar 8, 2017
2015Mar 9, 2016

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.