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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 38,810 $ 41,562
Grant receivables 1,609 3,672
Prepaid expenses and other current assets 2,382 2,413
Total current assets 42,801 47,647
Property and equipment, net 253 233
Right-of-use assets, operating leases 774 813
Other assets 1,835 1,732
Total assets 45,663 50,425
Current liabilities:    
Accounts payable 3,120 3,216
Accrued expenses 2,115 2,094
Deferred grant income, current 1,646 1,702
Operating lease liabilities, current 157 149
Other current liabilities 427 634
Total current liabilities 7,465 7,795
Operating lease liabilities, noncurrent 651 695
Deferred grant income and other liabilities, noncurrent 1,764 1,686
Total liabilities 9,880 10,176
Commitments and contingencies (Note 7)
Stockholders' equity:    
Preferred stock, $0.001 par value, 10,000,000 shares authorized; no shares issued and outstanding at March 31, 2023 and December 31, 2022
Common stock, $0.001 par value, 250,000,000 shares authorized; 29,277,227 and 28,991,548 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively 29 29
Additional paid-in capital 157,522 155,820
Accumulated deficit (121,573) (115,401)
Accumulated other comprehensive loss (195) (199)
Total stockholders' equity 35,783 40,249
Total liabilities and stockholders' equity $ 45,663 $ 50,425