Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

v3.22.2
CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
At the market offering
Private placement
Preferred shares
Common shares
Common shares
At the market offering
Common shares
Private placement
ATM proceeds receivable
Additional paid-in capital
Additional paid-in capital
At the market offering
Additional paid-in capital
Private placement
Accumulated other comprehensive income (loss)
Accumulated deficit
Balance at beginning of period (in shares) at Dec. 31, 2020       14,000                  
Balance at beginning of period (in shares) at Dec. 31, 2020         56,003,000                
Balance at beginning of period at Dec. 31, 2020 $ 31,027     $ 0 $ 56     $ 0 $ 242,672     $ (295) $ (211,406)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net loss (19,670)                       (19,670)
Foreign currency translation adjustment 529                     529  
Unrealized gain (loss) on investments 0                        
Stock based compensation expense 2,525               2,525        
Issuance of common stock resulting from exercise of stock options (in shares)         139,000                
Issuance of common stock resulting from exercise of stock options 292               292        
Issuance of common stock resulting from purchase of employee stock purchase plan shares (in shares)         40,000                
Issuance of common stock resulting from purchase of employee stock purchase plan shares 96               96        
Issuance of common stock resulting from exercise of warrants (in shares)         1,391,000                
Issuance of common stock resulting from exercise of warrants 837       $ 1       836        
Issuance of common stock resulting from conversion of preferred stock (in shares)       (4,000) 3,812,000                
Issuance of common stock resulting from conversion of preferred stock 0       $ 4       (4)        
Preferred stock conversion (Series E) (in shares)       5,000 (5,000,000)                
Preferred stock conversion (Series E) 0       $ (5)       5        
Issuance of common stock pursuant to offering (in shares)           3,004,000 7,290,000            
Issuance of common stock pursuant to offering   $ 12,172 $ 18,913     $ 3 $ 8     $ 12,169 $ 18,905    
Balance at end of period (in shares) at Jun. 30, 2021       16,000                  
Balance at end of period (in shares) at Jun. 30, 2021         66,679,000                
Balance at end of period at Jun. 30, 2021 46,721     $ 0 $ 67     0 277,496     234 (231,076)
Balance at beginning of period (in shares) at Mar. 31, 2021       14,000                  
Balance at beginning of period (in shares) at Mar. 31, 2021         59,719,000                
Balance at beginning of period at Mar. 31, 2021 38,236     $ 0 $ 60     0 253,560     194 (215,578)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net loss (15,498)                       (15,498)
Foreign currency translation adjustment 40                     40  
Unrealized gain (loss) on investments 0                        
Stock based compensation expense 1,326               1,326        
Issuance of common stock resulting from exercise of stock options (in shares)         129,000                
Issuance of common stock resulting from exercise of stock options 272               272        
Issuance of common stock resulting from purchase of employee stock purchase plan shares (in shares)         40,000                
Issuance of common stock resulting from purchase of employee stock purchase plan shares 96               96        
Issuance of common stock resulting from exercise of warrants (in shares)         1,391,000                
Issuance of common stock resulting from exercise of warrants 837       $ 1       836        
Issuance of common stock resulting from conversion of preferred stock (in shares)       (4,000) 3,812,000                
Issuance of common stock resulting from conversion of preferred stock 0       $ 4       (4)        
Preferred stock conversion (Series E) (in shares)       5,000 (5,000,000)                
Preferred stock conversion (Series E) 0       $ (5)       5        
Issuance of common stock pursuant to offering (in shares)           3,004,000 3,584,000            
Issuance of common stock pursuant to offering   12,172 $ 9,240     $ 3 $ 4     12,169 $ 9,236    
Balance at end of period (in shares) at Jun. 30, 2021       16,000                  
Balance at end of period (in shares) at Jun. 30, 2021         66,679,000                
Balance at end of period at Jun. 30, 2021 $ 46,721     $ 0 $ 67     0 277,496     234 (231,076)
Balance at beginning of period (in shares) at Dec. 31, 2021 15,617     16,000                  
Balance at beginning of period (in shares) at Dec. 31, 2021 72,222,661       72,222,000                
Balance at beginning of period at Dec. 31, 2021 $ 50,755     $ 0 $ 72     0 306,998     829 (257,144)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net loss (15,439)                       (15,439)
Foreign currency translation adjustment (356)                     (356)  
Unrealized gain (loss) on investments 152                     152  
Stock based compensation expense 2,479               2,479        
Issuance of common stock resulting from exercise of stock options (in shares)         46,000                
Issuance of common stock resulting from exercise of stock options 95               95        
Issuance of common stock resulting from purchase of employee stock purchase plan shares (in shares)         69,000                
Issuance of common stock resulting from purchase of employee stock purchase plan shares $ 104               104        
Issuance of common stock pursuant to offering (in shares)           1,920,000              
Issuance of common stock pursuant to offering   6,575       $ 2       6,573      
Balance at end of period (in shares) at Jun. 30, 2022 15,617     16,000                  
Balance at end of period (in shares) at Jun. 30, 2022 74,257,587       74,257,000                
Balance at end of period at Jun. 30, 2022 $ 44,365     $ 0 $ 74     0 316,249     625 (272,583)
Balance at beginning of period (in shares) at Mar. 31, 2022       16,000                  
Balance at beginning of period (in shares) at Mar. 31, 2022         74,098,000                
Balance at beginning of period at Mar. 31, 2022 53,450     $ 0 $ 74     314,668     953 (262,245)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                          
Net loss (10,338)                       (10,338)
Foreign currency translation adjustment (499)                     (499)  
Unrealized gain (loss) on investments 171                     171  
Stock based compensation expense 1,301               1,301        
Issuance of common stock resulting from exercise of stock options (in shares)         3,000                
Issuance of common stock resulting from exercise of stock options 10               10        
Issuance of common stock resulting from purchase of employee stock purchase plan shares (in shares)         69,000                
Issuance of common stock resulting from purchase of employee stock purchase plan shares $ 104               104        
Issuance of common stock pursuant to offering (in shares)           88,000              
Issuance of common stock pursuant to offering   $ 166               $ 166      
Balance at end of period (in shares) at Jun. 30, 2022 15,617     16,000                  
Balance at end of period (in shares) at Jun. 30, 2022 74,257,587       74,257,000                
Balance at end of period at Jun. 30, 2022 $ 44,365     $ 0 $ 74     $ 0 $ 316,249     $ 625 $ (272,583)