Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS??? EQUITY

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CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning balance at Dec. 31, 2019 $ 166,285 $ 61 $ 2,211 $ 769,639 $ (605,626)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Common stock issuances     23 13,238  
Share-based compensation, net [1]       684  
Share-based payments       111  
Settlement of Final Payment Fee     110 9,036  
Warrants issued in connection with Borrowings       (2,109)  
Net loss (40,734)       (40,734)
Ending balance at Mar. 31, 2020 146,644 61 2,344 790,599 (646,360)
Beginning balance at Dec. 31, 2020 109,090 61 3,309 922,042 (816,322)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Common stock issuances     387 88,776  
Share-based compensation, net [1]     23 2,656  
Warrant exercises     60 8,117  
Warrant cancellation       (218)  
Net loss (26,985)       (26,985)
Ending balance at Mar. 31, 2021 $ 181,906 $ 61 $ 3,779 $ 1,021,373 $ (843,307)
[1] (1) Includes settlement of 2019 bonus that was accrued for in 2019.