March 31,
2026

December 31,
2025

Accrued payroll tax withholding on stock option exercises

$

16,710

$

—

Accrued external research and development

10,078

8,589

Accrued compensation

2,700

9,517

Accrued professional fees

531

215

Other accrued expenses

1,106

1,131

Accrued expenses

$

31,125

$

19,452