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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock
Public offering
Common Stock
Private Placement
Common Stock
Additional Paid-in Capital
Public offering
Additional Paid-in Capital
Private Placement
Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Public offering
Private Placement
Total
Beginning Balance at Dec. 31, 2023     $ 4,000     $ 98,922,000 $ (17,000) $ (93,717,000)     $ 5,192,000
Beginning Balances (in shares) at Dec. 31, 2023     38,687,000                
Share-based compensation           67,000         67,000
Share-based compensation (in shares)     67,000                
Fair value of stock issued in payment of accrued compensation           326,000         326,000
Fair value of stock issued in payment of accrued compensation (in shares)     307,000                
Shares issued for services           3,000         3,000
Shares issued for services (per share) (in shares)     4,000                
Tax withholdings related to share-based compensation           (16,000)         (16,000)
Tax withholdings related to share-based compensation (in shares)     (22,000)                
Foreign-exchange translation adjustment             (3,000)       (3,000)
Net loss               (1,108,000)     (1,108,000)
Ending Balance at Mar. 31, 2024     $ 4,000     99,302,000 (20,000) (94,825,000)     4,461,000
Ending Balances (in shares) at Mar. 31, 2024     39,043,000                
Beginning Balance at Dec. 31, 2023     $ 4,000     98,922,000 (17,000) (93,717,000)     5,192,000
Beginning Balances (in shares) at Dec. 31, 2023     38,687,000                
Net loss                     (4,135,000)
Ending Balance at Sep. 30, 2024     $ 5,000     112,686,000 (16,000) (97,852,000)     14,823,000
Ending Balances (in shares) at Sep. 30, 2024     50,235,000                
Beginning Balance at Mar. 31, 2024     $ 4,000     99,302,000 (20,000) (94,825,000)     4,461,000
Beginning Balances (in shares) at Mar. 31, 2024     39,043,000                
Share-based compensation           344,000         344,000
Share-based compensation (in shares)     256,000                
Shares issued for services           3,000         3,000
Shares issued for services (per share) (in shares)     4,000                
Issuance of common stock in offering, net of expenses $ 1,000     $ 2,390,000 $ 865,000       $ 2,391,000 $ 865,000  
Issuance of common stock in offering, net of expenses (in shares) 5,314,000 2,250,000                  
Issuance of prefunded warrants in private placement, net of expenses         1,214,000         1,214,000  
Issuance of warrants in offering, net of expenses       $ 1,831,000 $ 2,389,000       $ 1,831,000 $ 2,389,000  
Issuance of common stock for participation right exercise, net of expenses           1,447,000         1,447,000
Issuance of common stock for participation right exercise, net of expenses (in shares)     3,350,000                
Issuance of prefunded warrants for participation right exercise, net of expenses           580,000         580,000
Issuance of warrants for participation right exercise, net of expenses           2,250,000         2,250,000
Tax withholdings related to share-based compensation           (13,000)         (13,000)
Tax withholdings related to share-based compensation (in shares)     (11,000)                
Foreign-exchange translation adjustment             (1,000)       (1,000)
Net loss               (1,872,000)     (1,872,000)
Ending Balance at Jun. 30, 2024     $ 5,000     112,602,000 (21,000) (96,697,000)     15,889,000
Ending Balances (in shares) at Jun. 30, 2024     50,206,000                
Share-based compensation           73,000         73,000
Shares issued for services           20,000         20,000
Shares issued for services (per share) (in shares)     29,000                
Tax withholdings related to share-based compensation           (9,000)         (9,000)
Foreign-exchange translation adjustment             5,000       5,000
Net loss               (1,155,000)     (1,155,000)
Ending Balance at Sep. 30, 2024     $ 5,000     112,686,000 (16,000) (97,852,000)     14,823,000
Ending Balances (in shares) at Sep. 30, 2024     50,235,000                
Beginning Balance at Dec. 31, 2024     $ 5,000     112,796,000 (21,000) (99,016,000)     13,764,000
Beginning Balances (in shares) at Dec. 31, 2024     50,286                
Share-based compensation           45,000         45,000
Share-based compensation (in shares)     81                
Fair value of stock issued in payment of accrued compensation           279,000         279,000
Fair value of stock issued in payment of accrued compensation (in shares)     326                
Shares issued for services           4,000         4,000
Shares issued for services (per share) (in shares)     4                
Exercise of warrants     $ 23     24,000         24,000
Exercise of prefunded warrants (in shares)     1,703                
Net loss               (2,076,000)     (2,076,000)
Ending Balance at Mar. 31, 2025     $ 5,000     113,148,000 (21,000) (101,092,000)     12,040,000
Ending Balances (in shares) at Mar. 31, 2025     52,423                
Beginning Balance at Dec. 31, 2024     $ 5,000     112,796,000 (21,000) (99,016,000)     13,764,000
Beginning Balances (in shares) at Dec. 31, 2024     50,286                
Net loss                     (5,185,000)
Ending Balance at Sep. 30, 2025     $ 5,000     113,294,000 (20,000) (104,201,000)     9,078,000
Ending Balances (in shares) at Sep. 30, 2025     52,517                
Beginning Balance at Mar. 31, 2025     $ 5,000     113,148,000 (21,000) (101,092,000)     12,040,000
Beginning Balances (in shares) at Mar. 31, 2025     52,423                
Share-based compensation           51,000         51,000
Shares issued for services           3,000         3,000
Shares issued for services (per share) (in shares)     3                
Net loss               (1,680,000)     (1,680,000)
Ending Balance at Jun. 30, 2025     $ 5,000     113,202,000 (21,000) (102,772,000)     10,414,000
Ending Balances (in shares) at Jun. 30, 2025     52,426                
Share-based compensation           38,000         38,000
Shares issued for services           54,000         54,000
Shares issued for services (per share) (in shares)     91                
Foreign-exchange translation adjustment             1,000       1,000
Net loss               (1,429,000)     (1,429,000)
Ending Balance at Sep. 30, 2025     $ 5,000     $ 113,294,000 $ (20,000) $ (104,201,000)     $ 9,078,000
Ending Balances (in shares) at Sep. 30, 2025     52,517