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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 28,533 $ 29,922
Grant receivables 3,099 1,281
Prepaid expenses and other current assets 1,918 3,019
Total current assets 33,550 34,222
Property and equipment, net 234 284
Right-of-use assets, operating leases 585 657
Total assets 34,369 35,163
Current liabilities:    
Accounts payable 3,034 3,695
Accrued expenses 6,064 4,055
Deferred grant income, current 1,453 1,701
Operating lease liabilities, current 184 174
Other current liabilities 185 544
Total current liabilities 10,920 10,169
Operating lease liabilities, noncurrent 440 520
Total liabilities 11,360 10,689
Commitments and contingencies (Note 6)
Stockholders' equity:    
Preferred stock, $0.001 par value, 10,000,000 shares authorized; no shares issued and outstanding at June 30, 2024 and December 31, 2023
Common stock, $0.001 par value, 250,000,000 shares authorized; 40,112,268 and 32,165,478 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively 40 32
Additional paid-in capital 180,350 165,826
Accumulated deficit (157,381) (141,189)
Accumulated other comprehensive loss   (195)
Total stockholders' equity 23,009 24,474
Total liabilities and stockholders' equity $ 34,369 $ 35,163