Prepaid Expenses, Other Current Assets and Other Noncurrent Assets

12 Months Ended

Dec. 31, 2025

Prepaid Expense and Other Assets, Current [Abstract]

Prepaid Expenses, Other Current Assets and Other Noncurrent Assets

8. Prepaid Expenses, Other Current Assets and Other Noncurrent Assets

Prepaid expenses and other current assets consisted of the following as of (in thousands):

	December 31,
	2025		2024
Amounts due under Asset Purchase Agreement	$	4,837	$	—
Prepaid external research and development		528		2,076
Payroll tax credit		555		555
Prepaid expenses		813		885
Other		20		396
Total prepaid expenses and other current assets	$	6,753	$	3,912

Included in prepaid external research and development is a deposit of $0.2 million that has been transferred to a payment processor to pay out investigator site fees related to our SIGNAL-AA Part B and OLE trials.

Other noncurrent assets consisted of the following as of (in thousands):

	December 31,
	2025		2024
Prepaid external research and development - long term	$	—	$	116
Total other noncurrent assets	$	—	$	116