Note 4 - Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Cash, Cash Equivalents and Investments [Table Text Block]

	Amortized		Gross Unrealized				Estimated		Cash and Cash		Short-Term
	Cost		Gains		Losses		Fair Value		Equivalents		Investments
September 30, 2024
Cash at banks	$	3,477	$	—	$	—	$	3,477	$	3,477	$	—
Money market funds		18,558		—		—		18,558		18,558		—
U.S. Treasury securities		33,997		22		—		34,019		—		34,019
Commercial paper		2,652		5		—		2,657		—		2,657
Total	$	58,684	$	27	$	—	$	58,711	$	22,035	$	36,676

	Amortized		Gross Unrealized					Estimated		Cash and Cash		Short-Term
	Cost		Gains		Losses			Fair Value		Equivalents		Investments
December 31, 2023
Cash at banks	$	3,352	$	—	$	—		$	3,352	$	3,352	$	—
Money market funds		31,403		—		—			31,403		31,403		—
U.S. Treasury securities		4,959		—		(1	)		4,958		—		4,958
Total	$	39,714	$	—	$	(1	)	$	39,713	$	34,755	$	4,958

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

	September 30, 2024		December 31, 2023
Prepaid clinical and manufacturing expenses	$	1,637	$	984
Prepaid insurance		488		258
Prepaid rent		517		488
Other prepaid		988		752
Other current assets		439		333
Prepaid expenses and other current assets	$	4,069	$	2,815

Property, Plant and Equipment [Table Text Block]

	September 30, 2024			December 31, 2023
Laboratory equipment	$	13,714		$	13,448
Office and computer equipment		1,120			1,105
Leasehold improvements		4,089			3,985
Construction in progress		141			24
Total property and equipment		19,064			18,562
Less: accumulated depreciation		(9,588	)		(6,831	)
Property and equipment, net	$	9,476		$	11,731

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

	September 30, 2024			December 31, 2023
Developed technology	$	5,000		$	5,000
Intellectual property		80			80
Total cost		5,080			5,080
Less: accumulated amortization		(1,340	)		(791	)
Intangible assets, net	$	3,740		$	4,289

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

Year Ending December 31,	Amount
2024 (three months remaining)	$	182
2025		732
2026		731
2027		731
2028		727
Thereafter		637
Total	$	3,740

Schedule of Accrued Liabilities [Table Text Block]

	September 30, 2024		December 31, 2023
Accrued compensation	$	4,511	$	4,576
Accrued clinical and manufacturing expenses		1,309		312
Accrued professional and consulting services		371		211
Other liabilities, current portion		573		535
Total	$	6,764	$	5,634