Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY

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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2019 $ 2 $ 350,468 $ (349,037) $ 1,433
Balance (in shares) at Dec. 31, 2019 1,913      
Net loss $ 0   (5,584) (5,584)
Issuance of common stock, net $ 0 452   452
Issuance of common stock, net (in shares) 290      
Issuance of common stock upon exercises of warrants, net $ 1 6,161   6,162
Issuance of common stock upon exercises of warrants, net (in shares) 913      
Reclassification of warrants from liability $ 0 2,897   2,897
Stock-based compensation 0 (84)   (84)
Balance at Mar. 31, 2020 $ 3 359,894 (354,621) 5,276
Balance (in shares) at Mar. 31, 2020 3,116      
Balance at Dec. 31, 2020 $ 7 370,804 (367,279) 3,532
Balance (in shares) at Dec. 31, 2020 7,139      
Net loss     (2,641) (2,641)
Issuance of common stock, net $ 3 8,838   8,841
Issuance of common stock, net (in shares) 2,725      
Stock-based compensation   248   248
Balance at Mar. 31, 2021 $ 10 $ 379,890 $ (369,920) $ 9,980
Balance (in shares) at Mar. 31, 2021 9,864