Note 4 - Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

Cash, Cash Equivalent, and Investment [Table Text Block]

	Amortized		Gross Unrealized					Estimated		Cash and Cash		Short-Term
	Cost		Gains		Losses			Fair Value		Equivalents		Investments
September 30, 2025
Cash at banks	$	3,521	$	—	$	—		$	3,521	$	3,521	$	—
Money market funds		5,727		—		—			5,727		5,727		—
U.S. Treasury securities		16,894		—		(2	)		16,892		4,979		11,913
Commercial paper		2,653		—		—			2,653		2,653		—
Total	$	28,795	$	—	$	(2	)	$	28,793	$	16,880	$	11,913

	Amortized		Gross Unrealized					Estimated		Cash and Cash		Short-Term
	Cost		Gains		Losses			Fair Value		Equivalents		Investments
December 31, 2024
Cash at banks	$	8,740	$	—	$	—		$	8,740	$	8,740	$	—
Money market funds		16,489		—		—			16,489		16,489		—
U.S. Treasury securities		23,802		7		(4	)		23,805		—		23,805
Commercial paper		2,688		1		—			2,689		—		2,689
Total	$	51,719	$	8	$	(4	)	$	51,723	$	25,229	$	26,494

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	September 30, 2025		December 31, 2024
Prepaid clinical and manufacturing expenses	$	750	$	1,998
Prepaid insurance		394		282
Prepaid rent		539		521
Other prepaid		861		1,449
Other current assets		88		318
Prepaid expenses and other current assets	$	2,632	$	4,568

Property, Plant and Equipment [Table Text Block]

	September 30, 2025			December 31, 2024
Laboratory equipment	$	13,897		$	13,806
Office and computer equipment		1,142			1,140
Leasehold improvements		4,000			4,107
Construction in progress		11			160
Total property and equipment		19,050			19,213
Less: accumulated depreciation		(12,986	)		(10,508	)
Property and equipment, net	$	6,064		$	8,705

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	September 30, 2025			December 31, 2024
Developed technology	$	5,000		$	5,000
Intellectual property		80			80
Total cost		5,080			5,080
Less: accumulated amortization		(2,071	)		(1,523	)
Intangible assets, net	$	3,009		$	3,557

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Year Ending December 31,	Amount
2025 (three months remaining)	$	184
2026		731
2027		731
2028		727
2029		636
Total	$	3,009

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	September 30, 2025
Balance at December 31, 2024	$	65,400
Revenue recognized		(753	)
Amounts collected or invoiced		181
Balance at September 30, 2025	$	64,828

Schedule of Accrued Liabilities [Table Text Block]

	September 30, 2025		December 31, 2024
Accrued compensation	$	3,643	$	5,087
Accrued clinical and manufacturing expenses		40,216		5,134
Accrued professional and consulting services		561		623
Other liabilities, current portion		462		534
Total	$	44,882	$	11,378