Note 4 - Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2026

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
March 31, 2026
Cash at banks	$	3,837	$	—	$	—		$	3,837	$	3,837	$	—
Money market funds		44,121		—		—			44,121		44,121		—
U.S. Treasury securities		4,190		—		(2	)		4,188		2,788		1,400
Commercial paper		8,881		—		(5	)		8,876		—		8,876
Total	$	61,029	$	—	$	(7	)	$	61,022	$	50,746	$	10,276

	Amortized		Gross Unrealized					Estimated		Cash and Cash		Short-Term
	Cost		Gains		Losses			Fair Value		Equivalents		Investments
December 31, 2025
Cash at banks	$	3,583	$	—	$	—		$	3,583	$	3,583	$	—
Money market funds		46,164		—		—			46,164		46,164		—
U.S. Treasury securities		14,063		1		(4	)		14,060		4,067		9,993
Total	$	63,810	$	1	$	(4	)	$	63,807	$	53,814	$	9,993

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

	March 31, 2026		December 31, 2025
Prepaid clinical and manufacturing expenses	$	10,869	$	18,920
Prepaid insurance		98		168
Prepaid rent		562		539
Other prepaid		965		677
Other current assets		614		667
Prepaid expenses and other current assets	$	13,108	$	20,971

Property, Plant, and Equipment [Table Text Block]

	March 31, 2026			December 31, 2025
Laboratory equipment	$	13,963		$	14,005
Office and computer equipment		1,158			1,142
Leasehold improvements		3,929			3,929
Construction in progress		335			158
Total property and equipment		19,385			19,234
Less: accumulated depreciation		(14,558	)		(13,801	)
Property and equipment, net	$	4,827		$	5,433

Intangible Asset, Finite-Lived [Table Text Block]

	March 31, 2026			December 31, 2025
Developed technology	$	5,000		$	5,000
Intellectual property		80			80
Total cost		5,080			5,080
Less: accumulated amortization		(2,437	)		(2,254	)
Intangible assets, net	$	2,643		$	2,826

Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]

Year Ending December 31,	Amount
2026 (nine months remaining)	$	549
2027		731
2028		727
2029		636
Total	$	2,643

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

	March 31, 2026			December 31, 2025
Balance at beginning of period	$	68		$	65,400
Revenue recognized		(45	)		(65,513	)
Amounts collected or invoiced		—			181
Balance at end of period	$	23		$	68

	March 31, 2026			December 31, 2025
Balance at beginning of period	$	14,976		$	—
Revenue recognized for collaboration		(2,815	)		(2,108	)
Amounts collected or invoiced		—			17,084
Total deferred collaboration revenue		12,161			14,976
Current portion		(11,716	)		(12,952	)
Long-term portion	$	445		$	2,024

Schedule of Accrued Liabilities [Table Text Block]

	March 31, 2026		December 31, 2025
Accrued compensation	$	2,259	$	4,244
Accrued clinical and manufacturing expenses		32,728		42,455
Accrued professional and consulting services		718		552
Other liabilities, current portion		821		628
Total	$	36,526	$	47,879