Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited)

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Total
Beginning balance, value at Dec. 31, 2020 $ 206 $ 355,037 $ (62) $ (267,533) $ 87,648
Balance, at beginning (in shares) at Dec. 31, 2020 206,008,683        
Issuance of common stock upon exercise of warrants in March 2021 ($0.57 per share) 2 2
Issuance of common stock upon exercise of warrants in March 2021 ($0.57 per share) (in shares) 3,400        
Issuance of common stock in January 2021 ($0.80 per share), net of transactional expenses of $3,096 $ 50 36,854 36,904
Issuance of common stock in January 2021 ($0.80 per share), net of transactional expenses of $3,096 (in shares) 50,000,000        
Issuance of common stock in February 2021 ($1.20 per share), net of transactional expenses of $5,002 $ 58 64,939 64,997
Issuance of common stock in february 2021 ($1.20 per share), net of transactional expenses of $5,002 (in shares) 58,333,334        
Issuance of common stock under at-the-market offering, net of transactional expenses of $230 $ 10 6,769 6,779
Issuance of common stock under at-the-market offering, net of transactional expenses of $2332 (in shares) 9,517,867        
Employee stock purchase plan 28 28
Employee stock purchase plan (in shares) 54,447        
Stock-based compensation 1,212 1,212
Foreign currency transaction gain (1) (1)
Net loss (20,653) (20,653)
Ending balance, value at Mar. 31, 2021 $ 324 464,841 (63) (288,186) 176,916
Balance, at end (in shares) at Mar. 31, 2021 323,917,731        
Beginning balance, value at Dec. 31, 2021 $ 496 578,133 (92) (359,820) 218,717
Balance, at beginning (in shares) at Dec. 31, 2021 496,245,564        
Issuance of common stock in January and March 2022, net of transactional expenses of $507 $ 35 8,453 8,488
Issuance of common stock in January and March 2022, net of transactional expenses of $507 (in shares) 34,452,826        
Issuance of common stock under Purchase agreement with Lincoln Park $ 22 4,513 4,535
Issuance of common stock under Purchase agreement with Lincoln Park ( in shares) 22,000,000        
Employee stock purchase plan 40 40
Employee stock purchase plan (in shares) 129,041        
Stock-based compensation 2,620 2,620
Foreign currency transaction gain (26) (26)
Net loss (26,417) (26,417)
Ending balance, value at Mar. 31, 2022 $ 553 $ 593,759 $ (118) $ (386,237) $ 207,957
Balance, at end (in shares) at Mar. 31, 2022 552,827,431