Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF STOCKHOLDERS??? EQUITY (UNAUDITED)

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CONDENSED STATEMENTS OF STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($)
shares in Thousands, $ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020   0 100,664    
Beginning balance at Dec. 31, 2020 $ 11,212 $ 0 $ 10 $ 75,123 $ (63,921)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under equity commitment (shares)     6,127    
Issuance of common stock under equity commitment 3,222   $ 1 3,221  
Stock-based compensation 657     657  
Net loss (3,127)       (3,127)
Ending balance (in shares) at Mar. 31, 2021   0 106,791    
Ending balance at Mar. 31, 2021 11,964 $ 0 $ 11 79,001 (67,048)
Beginning balance (in shares) at Dec. 31, 2020   0 100,664    
Beginning balance at Dec. 31, 2020 11,212 $ 0 $ 10 75,123 (63,921)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (6,657)        
Ending balance (in shares) at Jun. 30, 2021   0 108,462    
Ending balance at Jun. 30, 2021 9,977 $ 0 $ 11 80,544 (70,578)
Beginning balance (in shares) at Mar. 31, 2021   0 106,791    
Beginning balance at Mar. 31, 2021 11,964 $ 0 $ 11 79,001 (67,048)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock under equity commitment (shares)     1,669    
Issuance of common stock under equity commitment 631     631  
Issuance of common stock from net exercise of stock options (in shares)     2    
Issuance of common stock from net exercise of stock options 0        
Stock-based compensation 912     912  
Net loss (3,530)       (3,530)
Ending balance (in shares) at Jun. 30, 2021   0 108,462    
Ending balance at Jun. 30, 2021 9,977 $ 0 $ 11 80,544 (70,578)
Beginning balance (in shares) at Dec. 31, 2021   0 112,482    
Beginning balance at Dec. 31, 2021 3,543 $ 0 $ 11 83,007 (79,475)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of preferred stock and common stock warrants, net of issuance costs (shares)   1      
Issuance of preferred stock and common stock warrants, net of issuance costs 554 $ 280   274  
Issuance of common stock from note conversion (in shares)     6,804    
Issuance of common stock from note conversion 1,229   $ 1 1,228  
Common stock issued for services (in shares)     3,496    
Common stock issued for services 384     384  
Stock-based compensation 516     516  
Net loss (2,217)       (2,217)
Ending balance (in shares) at Mar. 31, 2022   1 122,782    
Ending balance at Mar. 31, 2022 4,009 $ 280 $ 12 85,409 (81,692)
Beginning balance (in shares) at Dec. 31, 2021   0 112,482    
Beginning balance at Dec. 31, 2021 3,543 $ 0 $ 11 83,007 (79,475)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (4,870)        
Ending balance (in shares) at Jun. 30, 2022   0 139,955    
Ending balance at Jun. 30, 2022 1,891 $ 0 $ 14 86,222 (84,345)
Beginning balance (in shares) at Mar. 31, 2022   1 122,782    
Beginning balance at Mar. 31, 2022 4,009 $ 280 $ 12 85,409 (81,692)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock from note conversion (in shares)     7,173    
Issuance of common stock from note conversion 389   $ 1 388  
Conversion of preferred stock (in shares)   (1) 10,000    
Conversion of preferred stock 0 $ (280) $ 1 279  
Beneficial conversion charge for preferred stock conversion 0 (920)   920  
Deemed dividend 0 $ 920   (920)  
Common stock issued for services (in shares)     3,496    
Common stock issued for services     $ 400    
Stock-based compensation 146     146  
Net loss (2,653)       (2,653)
Ending balance (in shares) at Jun. 30, 2022   0 139,955    
Ending balance at Jun. 30, 2022 $ 1,891 $ 0 $ 14 $ 86,222 $ (84,345)