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Condensed Consolidated Balance Sheets - USD ($)
Jun. 30, 2023
Dec. 31, 2022
Current assets    
Cash and cash equivalents $ 13,329,101 $ 34,669,605
Other receivables 572,466 1,703,160
Prepaid expenses 8,069,622 6,665,988
Other current assets 272,100 0
Total current assets 22,243,289 43,038,753
Property and equipment, net 45,785 64,908
Other non-current assets 920,880 722,722
Total assets 23,209,954 43,826,383
Current liabilities    
Accounts payable 6,541,115 2,027,953
Accrued expenses 4,193,799 10,894,016
Deferred grant funding 13,694,085 18,303,567
Current portion of lease liabilities 271,825 398,391
Total current liabilities 24,700,824 31,623,927
Deferred revenue 1,205,206 1,000,000
Lease liabilities long-term 23,326 90,346
Total liabilities 25,929,356 32,714,273
Commitments and contingencies (Note 7)
Stockholders' equity (deficit)    
Preferred stock, $0.01 par value, 5,000,000 shares authorized; None issued and outstanding 0 0
Common stock, $0.0001 par value; 240,000,000 shares authorized; 86,633,588 and 84,825,481 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively 8,663 8,482
Accumulated other comprehensive loss (404,467) (351,311)
Additional paid-in capital 155,555,775 152,529,579
Accumulated deficit (157,879,373) (141,074,640)
Total stockholders' equity (deficit) (2,719,402) 11,112,110
Total liabilities and stockholders' equity (deficit) $ 23,209,954 $ 43,826,383