Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS??? EQUITY (DEFICIT)

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CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Redeemable Convertible Preferred Stock And Preferred Stock Dividends To Common Stock
Convertible Notes Payable And Accrued Interest To Common Stock
Series A, B, C & C-1 Redeemable Convertible Preferred Stock
Series A, B, C & C-1 Redeemable Convertible Preferred Stock
Redeemable Convertible Preferred Stock And Preferred Stock Dividends To Common Stock
Common Stock
Common Stock
Redeemable Convertible Preferred Stock And Preferred Stock Dividends To Common Stock
Common Stock
Convertible Notes Payable And Accrued Interest To Common Stock
Additional Paid-In Capital
Additional Paid-In Capital
Redeemable Convertible Preferred Stock And Preferred Stock Dividends To Common Stock
Additional Paid-In Capital
Convertible Notes Payable And Accrued Interest To Common Stock
Accumulated Other Comprehensive Loss
Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2018       1,256,466                  
Beginning Balance at Dec. 31, 2018       $ 58,290                  
Increase (Decrease) in Temporary Equity [Roll Forward]                          
Reduction of redeemable convertible preferred stock to redemption value       $ (10,519)                  
Ending Balance (in shares) at Mar. 31, 2019       1,256,466                  
Ending Balance at Mar. 31, 2019       $ 47,771                  
Beginning Balance (in shares) at Dec. 31, 2018           589,001              
Beginning Balance at Dec. 31, 2018 $ (71,618)         $ 6     $ 0     $ 0 $ (71,624)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Reduction of redeemable convertible preferred stock to redemption value 10,519                       10,519
Stock based compensation 384               384        
Net income (loss) (4,580)                       (4,580)
Ending Balance (in shares) at Mar. 31, 2019           589,001              
Ending Balance at Mar. 31, 2019 (65,295)         $ 6     384     0 (65,685)
Beginning Balance (in shares) at Dec. 31, 2018       1,256,466                  
Beginning Balance at Dec. 31, 2018       $ 58,290                  
Ending Balance (in shares) at Sep. 30, 2019       0                  
Ending Balance at Sep. 30, 2019       $ 0                  
Beginning Balance (in shares) at Dec. 31, 2018           589,001              
Beginning Balance at Dec. 31, 2018 (71,618)         $ 6     0     0 (71,624)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Unrealized loss on available-for-sale marketable securities (11)                        
Net income (loss) (13,015)                        
Ending Balance (in shares) at Sep. 30, 2019           7,810,680              
Ending Balance at Sep. 30, 2019 18,225         $ 78     92,278     (11) (74,120)
Beginning Balance (in shares) at Mar. 31, 2019       1,256,466                  
Beginning Balance at Mar. 31, 2019       $ 47,771                  
Increase (Decrease) in Temporary Equity [Roll Forward]                          
Accretion of redeemable convertible preferred stock to redemption value       $ 163                  
Ending Balance (in shares) at Jun. 30, 2019       1,256,466                  
Ending Balance at Jun. 30, 2019       $ 47,934                  
Beginning Balance (in shares) at Mar. 31, 2019           589,001              
Beginning Balance at Mar. 31, 2019 (65,295)         $ 6     384     0 (65,685)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Accretion of redeemable convertible preferred stock to redemption value (163)               (163)        
Stock based compensation 299               299        
Net income (loss) (3,654)                       (3,654)
Ending Balance (in shares) at Jun. 30, 2019           589,001              
Ending Balance at Jun. 30, 2019 (68,813)         $ 6     520     0 (69,339)
Increase (Decrease) in Temporary Equity [Roll Forward]                          
Accretion of redeemable convertible preferred stock to redemption value       $ 82                  
Conversion of redeemable convertible preferred stock and preferred stock dividends to common stock (in shares)         (1,256,466)                
Conversion of redeemable convertible preferred stock and preferred stock dividends to common stock         $ (48,016)                
Ending Balance (in shares) at Sep. 30, 2019       0                  
Ending Balance at Sep. 30, 2019       $ 0                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Common stock issued, net of issuance costs (in shares)             2,783,951 1,069,740          
Common stock issued, net of issuance costs   $ 48,016 $ 5,092       $ 28 $ 10   $ 47,988 $ 5,082    
Accretion of redeemable convertible preferred stock to redemption value (82)               (82)        
Common stock issued in recapitalization (in shares)           3,367,988              
Common stock issued in recapitalization 36,093         $ 34     36,059        
Reclassification of warrant liability to equity 1,511               1,511        
Common stock warrants issued in connection with the research and development funding liability 876               876        
Stock based compensation 324               324        
Unrealized loss on available-for-sale marketable securities (11)                     (11)  
Net income (loss) (4,781)                       (4,781)
Ending Balance (in shares) at Sep. 30, 2019           7,810,680              
Ending Balance at Sep. 30, 2019 $ 18,225         $ 78     92,278     (11) (74,120)
Beginning Balance (in shares) at Dec. 31, 2019       0                  
Beginning Balance at Dec. 31, 2019       $ 0                  
Ending Balance (in shares) at Mar. 31, 2020       0                  
Ending Balance at Mar. 31, 2020       $ 0                  
Beginning Balance (in shares) at Dec. 31, 2019 8,480,968         8,480,968              
Beginning Balance at Dec. 31, 2019 $ 7,574         $ 85     92,497     (28) (84,980)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Common stock issued, net of issuance costs (in shares)           950,000              
Common stock issued, net of issuance costs 1,990         $ 10     1,980        
Issuance of common stock upon exercise of warrants (in shares)           221,293              
Issuance of common stock upon exercise of warrants 15         $ 2     13        
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes (in shares)           19,643              
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes (13)               (13)        
Stock based compensation 403               403        
Unrealized loss on available-for-sale marketable securities 28                     28  
Net income (loss) (4,103)                       (4,103)
Ending Balance (in shares) at Mar. 31, 2020           9,671,904              
Ending Balance at Mar. 31, 2020 $ 5,894         $ 97     94,880     0 (89,083)
Beginning Balance (in shares) at Dec. 31, 2019       0                  
Beginning Balance at Dec. 31, 2019       $ 0                  
Ending Balance (in shares) at Sep. 30, 2020       0                  
Ending Balance at Sep. 30, 2020       $ 0                  
Beginning Balance (in shares) at Dec. 31, 2019 8,480,968         8,480,968              
Beginning Balance at Dec. 31, 2019 $ 7,574         $ 85     92,497     (28) (84,980)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Unrealized loss on available-for-sale marketable securities 28                        
Net income (loss) $ (13,548)                        
Ending Balance (in shares) at Sep. 30, 2020 31,241,636         31,241,636              
Ending Balance at Sep. 30, 2020 $ 18,712         $ 312     116,928     0 (98,528)
Beginning Balance (in shares) at Mar. 31, 2020       0                  
Beginning Balance at Mar. 31, 2020       $ 0                  
Ending Balance (in shares) at Jun. 30, 2020       0                  
Ending Balance at Jun. 30, 2020       $ 0                  
Beginning Balance (in shares) at Mar. 31, 2020           9,671,904              
Beginning Balance at Mar. 31, 2020 5,894         $ 97     94,880     0 (89,083)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Common stock issued, net of issuance costs (in shares)           14,790,133              
Common stock issued, net of issuance costs 18,679         $ 148     18,531        
Issuance of common stock upon exercise of warrants (in shares)           2,202,863              
Issuance of common stock upon exercise of warrants 7         $ 22     (15)        
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes (in shares)           6,673              
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes (4)               (4)        
Stock based compensation 453               453        
Net income (loss) (5,119)                       (5,119)
Ending Balance (in shares) at Jun. 30, 2020           26,671,573              
Ending Balance at Jun. 30, 2020 19,910         $ 267     113,845     0 (94,202)
Ending Balance (in shares) at Sep. 30, 2020       0                  
Ending Balance at Sep. 30, 2020       $ 0                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Common stock issued, net of issuance costs (in shares)           3,400,418              
Common stock issued, net of issuance costs 2,596         $ 34     2,562        
Issuance of common stock upon exercise of warrants (in shares)           1,113,424              
Issuance of common stock upon exercise of warrants 1         $ 11     (10)        
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes (in shares)           56,221              
Issuance of common stock upon restricted stock unit settlement, net of shares withheld for taxes (22)               (22)        
Stock based compensation 553               553        
Unrealized loss on available-for-sale marketable securities 0                        
Net income (loss) $ (4,326)                       (4,326)
Ending Balance (in shares) at Sep. 30, 2020 31,241,636         31,241,636              
Ending Balance at Sep. 30, 2020 $ 18,712         $ 312     $ 116,928     $ 0 $ (98,528)