Annual report pursuant to Section 13 and 15(d)

CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY

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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2019 $ 0 $ 2 $ 350,468 $ (349,037) $ 1,433
Balance (in shares) at Dec. 31, 2019 0 1,913,000      
Net loss $ 0 $ 0 0 (18,242) (18,242)
Issuance of common stock, net $ 0 $ 4 10,190 0 10,194
Issuance of common stock, net (in shares) 0 3,605,000      
Issuance of common stock upon exercises of warrants, net $ 0 $ 2 7,241 0 $ 7,243
Issuance of common stock upon exercises of warrants, net (in shares) 0 1,563,000     450,761
Reverse stock split adjustments $ 0 $ (1) 1 0 $ 0
Reverse stock split adjustments (in shares)   58,000      
Reclassification of liability-classified warrants to equity 0 $ 0 2,897 0 2,897
Stock-based compensation 0 0 7 0 7
Balance at Dec. 31, 2020 $ 0 $ 7 370,804 (367,279) 3,532
Balance (in shares) at Dec. 31, 2020 0 7,139,000      
Net loss $ 0 $ 0 0 (8,776) (8,776)
Issuance of common stock, net 0 3 8,838 0 8,841
Amortization of restricted stock $ 0 $ 0 36 0 36
Issuance of common stock, net (in shares) 0 2,775,000      
Stock-based compensation $ 0 $ 0 1,505 0 1,505
Balance at Dec. 31, 2021 $ 0 $ 10 $ 381,183 $ (376,055) $ 5,138
Balance (in shares) at Dec. 31, 2021 0 9,914,000