Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY

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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY - USD ($)
$ in Thousands
Total
Follow On Offering
At The Market
Common Stock
Common Stock
Follow On Offering
Common Stock
At The Market
Additional Paid-In Capital
Additional Paid-In Capital
Follow On Offering
Additional Paid-In Capital
At The Market
Accumulated Other Comprehensive (Loss) Gain
Accumulated Deficit
Balance at Dec. 31, 2019 $ 79,184     $ 43     $ 372,100     $ 24 $ (292,983)
Balance (in shares) at Dec. 31, 2019       43,367,801              
Exercise of stock options 100           100        
Exercise of stock options, Shares       30,595              
Vesting of restricted stock units       90,512              
Stock-based compensation expense 2,459           2,459        
Issuance of common stock / preferred stock, warrants, net of issuance costs     $ 11,919     $ 2     $ 11,917    
Issuance of common stock / preferred stock, net of issuance costs (in shares)           2,201,810          
Issuance of warrants 128           128        
Other comprehensive gain (loss) (21)                 (21)  
Net loss (17,226)                   (17,226)
Balance at Mar. 31, 2020 76,543     $ 45     386,704     3 (310,209)
Balance (in shares) at Mar. 31, 2020       45,690,718              
Balance at Dec. 31, 2019 79,184     $ 43     372,100     $ 24 (292,983)
Balance (in shares) at Dec. 31, 2019       43,367,801              
Net loss (84,000)                    
Balance at Dec. 31, 2020 $ 90,553     $ 56     467,518       (377,021)
Balance (in shares) at Dec. 31, 2020 56,222,746     56,222,746              
Exercise of stock options $ 157           157        
Exercise of stock options, Shares 20,134     20,134              
Vesting of restricted stock units       206,762              
Stock-based compensation expense $ 2,930           2,930        
Issuance of common stock / preferred stock, warrants, net of issuance costs   $ 70,468     $ 5     $ 70,463      
Issuance of common stock / preferred stock, net of issuance costs (in shares)         5,400,000            
Net loss (14,228)                   (14,228)
Balance at Mar. 31, 2021 $ 149,880     $ 61     $ 541,068       $ (391,249)
Balance (in shares) at Mar. 31, 2021 61,849,642     61,849,642