Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Condensed Consolidated Statements of Operations
Grant revenue	$ 2,973	$ 1,225	$ 3,939	$ 3,001
Operating expenses
Research and development	9,485	7,978	25,975	25,842
General and administrative	3,244	3,583	9,861	8,470
Total operating expenses	12,729	11,561	35,836	34,312
Operating loss	(9,756)	(10,336)	(31,897)	(31,311)
Other income (expense)
Interest income	294	47	567	111
Interest expense	(2,923)	(1,176)	(7,462)	(1,176)
Change in fair value of convertible debt	6,904	(15,833)	17,276	(12,959)
Loss on convertible debt extinguishment		(3,863)		(3,863)
Total other income (expense), net	4,275	(20,825)	10,381	(17,887)
Net loss	$ (5,481)	$ (31,161)	$ (21,516)	$ (49,198)
Per share information:
Net loss per share, basic	$ (0.15)	$ (0.86)	$ (0.60)	$ (1.36)
Net loss per share, diluted	$ (0.15)	$ (0.86)	$ (0.60)	$ (1.36)
Weighted average shares outstanding, basic	36,180,124	36,086,990	36,153,388	36,067,025
Weighted average shares outstanding, diluted	36,180,124	36,086,990	36,153,388	36,067,025