Gross

Estimated

Amortized

Unrealized

Fair

Level

Cost

Gains

Losses

Value

June 30, 2025

Cash and cash equivalents - Money market mutual funds

1

$

51,248

$

—

$

—

$

51,248

Cash and cash equivalents - U.S. Treasury securities

2

—

—

—

—

Short-term investments - U.S. Treasury securities

2

188,636

6

(52

)

188,590

Total

$

239,884

$

6

$

(52

)

$

239,838

December 31, 2024

Cash and cash equivalents - Money market mutual funds

1

$

6,506

$

—

$

—

$

6,506

Cash and cash equivalents - U.S. Treasury securities

2

42,382

5

—

42,387

Short-term investments - U.S. Treasury securities

2

262,990

223

(8

)

263,205

Total

$

311,878

$

228

$

(8

)

$

312,098