Balance at December 31, 2025

​

​

Acquisition
Cost

​

​

Accretion /
(Amortization)

​

​

Unrealized
Gain / (Loss)

​

​

Estimated
Fair Value

Commercial paper

​

$

4,888

​

$

34

​

$

—

​

$

4,922

Corporate notes / bonds

​

​

24,063

​

​

96

​

​

2

​

​

24,161

Money market funds

​

​

5,287

​

​

—

​

​

—

​

​

5,287

U.S. govt. agencies

​

​

11,192

​

​

64

​

​

5

​

​

11,261

U.S. treasuries

​

​

4,881

​

​

11

​

​

(1)

​

​

4,891

Total investment securities

​

$

50,311

​

$

205

​

$

6

​

$

50,522

Balance at December 31, 2024

​

​

Acquisition
Cost

​

​

Accretion /
(Amortization)

​

​

Unrealized
Gain / (Loss)

​

​

Estimated
Fair Value

Commercial paper

​

$

10,130

​

$

254

​

$

3

​

$

10,387

Corporate notes / bonds

​

​

45,336

​

​

483

​

​

7

​

​

45,826

Money market funds

​

​

2,766

​

​

—

​

​

—

​

​

2,766

U.S. govt. agencies

​

​

1,441

​

​

31

​

​

(2)

​

​

1,470

U.S. treasuries

​

​

6,609

​

​

41

​

​

(1)

​

​

6,649

Total investment securities

​

$

66,282

​

$

809

​

$

7

​

$

67,098