Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Condensed Consolidated Statements of Operations
Grant revenue		$ 980	$ 966	$ 1,776
Operating expenses
Research and development	$ 8,475	8,259	16,491	17,863
General and administrative	3,439	2,350	6,617	4,888
Total operating expenses	11,914	10,609	23,108	22,751
Operating loss	(11,914)	(9,629)	(22,142)	(20,975)
Other income (expense)
Interest income	221	46	273	64
Interest expense	(2,718)		(4,538)
Change in fair value of convertible debt	23,397	6,036	10,372	2,874
Total other income (expense), net	20,900	6,082	6,107	2,938
Net income (loss)	$ 8,986	$ (3,547)	$ (16,035)	$ (18,037)
Per share information:
Net income (loss) per share, basic	$ 0.25	$ (0.10)	$ (0.44)	$ (0.50)
Net loss per share, diluted	$ (0.25)	$ (0.17)	$ (0.45)	$ (0.50)
Weighted average shares outstanding, basic	36,154,521	36,068,130	36,139,873	36,056,649
Weighted average shares outstanding, diluted	58,246,626	56,544,698	58,231,978	36,056,649