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Condensed Consolidated Statements of Stockholders’ Equity (Deficit) - USD ($)
Total
Conversion of Convertible Debt
Conversion Of Convertible Preferred Stock
At-the-Market Offering
July Public Offering
Common Stock
Common Stock
Conversion of Convertible Debt
Common Stock
Conversion Of Convertible Preferred Stock
Common Stock
At-the-Market Offering
Common Stock
July Public Offering
Treasury Stock
Additional Paid-in Capital
Additional Paid-in Capital
Conversion of Convertible Debt
Additional Paid-in Capital
Conversion Of Convertible Preferred Stock
Additional Paid-in Capital
At-the-Market Offering
Additional Paid-in Capital
July Public Offering
Accumulated Other Comprehensive Loss
Accumulated Deficit
Balance at beginning of period (in shares) at Dec. 31, 2023           9,603,723                        
Beginning balance at Dec. 31, 2023 $ 11,373,000         $ 96,000         $ (150,000) $ 153,827,000         $ (197,000) $ (142,203,000)
Treasury stock, beginning balance (in shares) at Dec. 31, 2023                     (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock, net of issuance costs (in shares)           615,363                        
Issuance of common stock, net of issuance costs 5,062,000         $ 6,000           5,056,000            
Issuance of common stock upon settlement of restricted stock (in shares)           903                        
Issuance of common stock upon the exercise of common warrants 11,000                     11,000            
Stock-based compensation 324,000                     324,000            
Foreign currency translation adjustment (73,000)                               (73,000)  
Net loss (11,827,000)                                 (11,827,000)
Balance at end of period (in shares) at Mar. 31, 2024           10,219,989                        
Ending balance at Mar. 31, 2024 4,870,000         $ 102,000         $ (150,000) 159,218,000         (270,000) (154,030,000)
Treasury stock, ending balance (in shares) at Mar. 31, 2024                     (14,455)              
Balance at beginning of period (in shares) at Dec. 31, 2023           9,603,723                        
Beginning balance at Dec. 31, 2023 11,373,000         $ 96,000         $ (150,000) 153,827,000         (197,000) (142,203,000)
Treasury stock, beginning balance (in shares) at Dec. 31, 2023                     (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Foreign currency translation adjustment (5,000)                                  
Net loss (37,894,000)                                  
Balance at end of period (in shares) at Sep. 30, 2024           10,784,377                        
Ending balance at Sep. 30, 2024 (18,986,000)         $ 108,000         $ (150,000) 161,355,000         (202,000) (180,097,000)
Treasury stock, ending balance (in shares) at Sep. 30, 2024                     (14,455)              
Balance at beginning of period (in shares) at Mar. 31, 2024           10,219,989                        
Beginning balance at Mar. 31, 2024 4,870,000         $ 102,000         $ (150,000) 159,218,000         (270,000) (154,030,000)
Treasury stock, beginning balance (in shares) at Mar. 31, 2024                     (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock upon exercise of options (in shares)           3,391                        
Issuance of common stock upon exercise of options 13,000                     13,000            
Conversion of senior note payable into common stock (in shares)               34,816                    
Conversion of senior note payable into common stock     $ 303,000         $ 1,000           $ 302,000        
Issuance of common stock upon settlement of restricted stock (in shares)           677                        
Issuance of common stock upon the exercise of common warrants 9,000                     9,000            
Stock-based compensation 350,000                     350,000            
Foreign currency translation adjustment 32,000                               32,000  
Net loss (7,229,000)                                 (7,229,000)
Balance at end of period (in shares) at Jun. 30, 2024           10,258,873                        
Ending balance at Jun. 30, 2024 (1,652,000)         $ 103,000         $ (150,000) 159,892,000         (238,000) (161,259,000)
Treasury stock, ending balance (in shares) at Jun. 30, 2024                     (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock, net of issuance costs (in shares)                 9,803 510,000                
Issuance of common stock, net of issuance costs       $ 48,000 $ 1,080,000         $ 5,000         $ 48,000 $ 1,075,000    
Issuance of common stock upon exercise of options (in shares)           5,353                        
Issuance of common stock upon exercise of options 21,000                     21,000            
Issuance of common stock upon settlement of restricted stock (in shares)           348                        
Issuance of common stock upon the exercise of common warrants 5,000                     5,000            
Stock-based compensation 314,000                     314,000            
Foreign currency translation adjustment 36,000                               36,000  
Net loss (18,838,000)                                 (18,838,000)
Balance at end of period (in shares) at Sep. 30, 2024           10,784,377                        
Ending balance at Sep. 30, 2024 $ (18,986,000)         $ 108,000         $ (150,000) 161,355,000         (202,000) (180,097,000)
Treasury stock, ending balance (in shares) at Sep. 30, 2024                     (14,455)              
Balance at beginning of period (in shares) at Dec. 31, 2024 11,029,382         11,043,837                        
Beginning balance at Dec. 31, 2024 $ (11,312,000)         $ 110,000         $ (150,000) 183,004,000         (175,000) (194,101,000)
Treasury stock, beginning balance (in shares) at Dec. 31, 2024 (14,455)                   (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock, net of issuance costs (in shares)           106,823                        
Issuance of common stock, net of issuance costs $ 835,000         $ 1,000           834,000            
Issuance of common stock upon exercise of options (in shares)           1,628                        
Issuance of common stock upon exercise of options 7,000                     7,000            
Conversion of senior note payable into common stock (in shares)             3,500,573                      
Conversion of senior note payable into common stock   $ 20,176,000         $ 35,000           $ 20,141,000          
Issuance of common stock and warrants from the January Offering (in shares)           $ 1,261,830                        
Issuance of common stock and warrants from the January Offering 9,143,000         $ 13,000           9,130,000            
Issuance of common stock upon settlement of restricted stock (in shares)           68,500                        
Issuance of common stock upon the exercise of common warrants 716,000         $ 1,000           715,000            
Stock-based compensation 517,000                     517,000            
Foreign currency translation adjustment 31,000                               31,000  
Net loss (11,209,000)                                 (11,209,000)
Balance at end of period (in shares) at Mar. 31, 2025           15,983,191                        
Ending balance at Mar. 31, 2025 $ 8,904,000         $ 160,000         $ (150,000) 214,348,000         (144,000) (205,310,000)
Treasury stock, ending balance (in shares) at Mar. 31, 2025                     (14,455)              
Balance at beginning of period (in shares) at Dec. 31, 2024 11,029,382         11,043,837                        
Beginning balance at Dec. 31, 2024 $ (11,312,000)         $ 110,000         $ (150,000) 183,004,000         (175,000) (194,101,000)
Treasury stock, beginning balance (in shares) at Dec. 31, 2024 (14,455)                   (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock upon exercise of options (in shares) 31,918                                  
Foreign currency translation adjustment $ 144,000                                  
Net loss $ (31,853,000)                                  
Balance at end of period (in shares) at Sep. 30, 2025 17,258,652         17,273,107                        
Ending balance at Sep. 30, 2025 $ 3,816,000         $ 173,000         $ (150,000) 229,778,000         (31,000) (225,954,000)
Treasury stock, ending balance (in shares) at Sep. 30, 2025 (14,455)                   (14,455)              
Balance at beginning of period (in shares) at Mar. 31, 2025           15,983,191                        
Beginning balance at Mar. 31, 2025 $ 8,904,000         $ 160,000         $ (150,000) 214,348,000         (144,000) (205,310,000)
Treasury stock, beginning balance (in shares) at Mar. 31, 2025                     (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock, net of issuance costs (in shares)           281,697                        
Issuance of common stock, net of issuance costs 2,016,000         $ 3,000           2,013,000            
Issuance of common stock upon exercise of options (in shares)           12,499                        
Issuance of common stock upon exercise of options 50,000                     50,000            
Issuance of common warrants associated with June 2025 Promissory Note 641,000                     641,000            
Stock-based compensation 710,000                     710,000            
Foreign currency translation adjustment 74,000                               74,000  
Net loss (10,561,000)                                 (10,561,000)
Balance at end of period (in shares) at Jun. 30, 2025           16,277,387                        
Ending balance at Jun. 30, 2025 1,834,000         $ 163,000         $ (150,000) 217,762,000         (70,000) (215,871,000)
Treasury stock, ending balance (in shares) at Jun. 30, 2025                     (14,455)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                    
Issuance of common stock, net of issuance costs (in shares)                 787,929                  
Issuance of common stock, net of issuance costs       $ 8,535,000         $ 8,000           $ 8,527,000      
Issuance of common stock upon exercise of options (in shares)           17,791                        
Issuance of common stock upon exercise of options 88,000                     88,000            
Issuance of common stock upon settlement of restricted stock (in shares)           190,000                        
Issuance of common stock upon the exercise of common warrants 2,705,000         $ 2,000           2,703,000            
Stock-based compensation 698,000                     698,000            
Foreign currency translation adjustment 39,000                               39,000  
Net loss $ (10,083,000)                                 (10,083,000)
Balance at end of period (in shares) at Sep. 30, 2025 17,258,652         17,273,107                        
Ending balance at Sep. 30, 2025 $ 3,816,000         $ 173,000         $ (150,000) $ 229,778,000         $ (31,000) $ (225,954,000)
Treasury stock, ending balance (in shares) at Sep. 30, 2025 (14,455)                   (14,455)