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CONSOLIDATED BALANCE SHEETS - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 76,000 $ 8,554,000
Investments 3,530,000  
Grant receivable 571,000  
Other current assets 1,082,000 1,280,000
Total current assets 5,259,000 9,834,000
Property and equipment, net 448,000 906,000
Operating lease right-use-of assets 73,000 202,000
Goodwill 372,000 372,000
Intangible assets, net 469,000 42,000
Other assets 12,000 32,000
Total assets 6,633,000 11,388,000
Current liabilities:    
Accounts payable and accrued expenses 11,288,000 6,631,000
Operating lease liability 44,000 120,000
Deferred grant liability 927,000  
Line of credit 3,292,000  
Term loan obligation, current   3,976,000
Total current liabilities 15,551,000 10,727,000
Noncurrent operating lease liability 31,000 85,000
Deferred grant liability   1,924,000
Total liabilities 15,582,000 12,736,000
Commitments and contingencies (Note 7)
Stockholders' equity (deficit):    
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 1,952 shares issued and outstanding as of December 31, 2024 and 2023
Common stock, $0.001 par value; 100,000,000 shares authorized; 6,154,758 shares issued and 5,896,333 outstanding as of December 31, 2024, 4,522,656 shares issued and 4,444,097 outstanding as of December 31, 2023, respectively 6,000 5,000
Treasury stock (at cost, 258,425 and 78,559 shares as of December 31, 2024 and 2023, respectively) (500,000) (126,000)
Additional paid-in capital 485,024,000 479,274,000
Accumulated deficit (493,479,000) (480,501,000)
Total stockholders' equity (deficit) (8,949,000) (1,348,000)
Total liabilities and stockholders' equity (deficit) $ 6,633,000 $ 11,388,000