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, 2021 $ 16 $ 578,613 $ (92) $ (359,820) $ 218,717
Balance, at beginning (in shares) at Dec. 31, 2021 15,638,274        
Issuance of common stock in January and March 2022, net of transactional expenses of $507 $ 1 8,487 8,488
Issuance of common stock in January and March 2022, net of transactional expenses of $507 (in shares) 1,076,661        
Issuance of common stock under Purchase agreement with Lincoln Park $ 1 4,534 4,535
Issuance of common stock under Purchase agreement with Lincoln Park (in shares) 687,500        
Employee stock purchase plan 40 40
Employee stock purchase plan (in shares) 4,033        
Stock-based compensation 2,620 2,620
Foreign currency translation gain (26) (26)
Net loss (26,417) (26,417)
Ending balance, value at Mar. 31, 2022 $ 18 594,294 (118) (386,237) 207,957
Balance, at end (in shares) at Mar. 31, 2022 17,406,468        
Beginning balance, value at Dec. 31, 2022 $ 76 677,311 (167) (470,038) 207,182
Balance, at beginning (in shares) at Dec. 31, 2022 76,478,656        
Repurchase of common stock under share repurchase program, including transactional expenses of $334 $ (16) (13,949) (13,965)
Repurchase of common stock under share repurchase program (in shares) (16,700,269)        
Issuance of common stock under 2022 Purchase agreement with Lincoln Park $ 1 440 441
Issuance of common stock under 2022 Purchase agreement with Lincoln Park (in shares) 600,000        
Issuance of common stock net of transactional expenses of $101 $ 3 1,992 1,995
Issuance of common stock net of transactional expenses of $101 (in shares) 3,215,577        
Employee stock purchase plan 29 29
Employee stock purchase plan (in shares) 93,741        
Stock-based compensation 2,794 2,794
Foreign currency translation gain (44) (44)
Net loss (33,005) (33,005)
Ending balance, value at Mar. 31, 2023 $ 64 $ 682,566 $ (211) $ (516,922) $ 165,427
Balance, at end (in shares) at Mar. 31, 2023 63,687,705