Annual report [Section 13 and 15(d), not S-K Item 405]

Schedule of option activity (Tables)

v3.25.1
Schedule of option activity (Tables)
 12 Months Ended
Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Schedule of non-vested options
           
    Number of
shares		     Weighted-
average
grant date
fair value		  
Balance as of January 1, 2024     67,500     $ 4.77  
Granted     30,000       3.41  
Forfeited     (11,667 )     (4.32 )
Vested     (53,750 )     (4.87 )
Balance as of December 31, 2024     32,083     $ 3.49  
Non Employee Stock Options [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Schedule of option activity
                       
    Number of
shares		     Weighted-
average
exercise
price		     Weighted-
average
remaining
life
(years)		     Aggregate
intrinsic
value		  
Outstanding as of January 1, 2023     2,009     $ 120.83       1.83     $ –  
Granted     –       –                  
Expired     (84 )     231.60                  
Outstanding as of December 31, 2023     1,925       115.99       0.91       –  
Granted     –       –                  
Expired     (1,672 )     50.20                  
Outstanding as of December 31, 2024     253     $ 550.80       0.68     $ –  
                                 
Vested or expected to vest as of December 31, 2024     253     $ 550.80       0.68     $ –  
                                 
Exercisable as of December 31, 2023     1,925     $ 115.99       0.91     $ –  
Exercisable as of December 31, 2024     253     $ 550.80       0.68     $ –