Annual report pursuant to Section 13 and 15(d)

12. Share-Based Compensation (Details - Employee option activity)

v3.20.4
12. Share-Based Compensation (Details - Employee option activity) - Employee Stock Options [Member] - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Options outstanding, beginning balance 662,059 147,472 148,381
Options granted 125,000 525,000  
Options expired (23,337) (10,413)  
Options outstanding, ending balance 763,722 662,059 147,472
Options vested or expected to vest 763,722    
Options exercisable 372,042 123,864  
Weighted-average exercise price outstanding, beginning balance $ 10.88 $ 45.95 $ 47.90
Weighted-average exercise price, granted 1.10 1.31  
Weighted-average exercise price, expired 52.55 25.32  
Weighted-average exercise price, ending balance 8.01 10.88 $ 45.95
Weighted-average exercise price, vested or expected to vest 8.01    
Weighted-average exercise price, exercisable $ 15.12 $ 47.69  
Weighted-average remaining life outstanding 8 years 8 months 5 days 9 years 4 months 2 days 8 years 2 months 1 day
Weighted-average remaining life, vested or expected to vest 8 years 8 months 5 days    
Weighted-average remaining life, exercisable 8 years 1 month 2 days 7 years 1 month 6 days  
Aggregate intrinsic value, outstanding beginning balance $ 66,125 $ 0 $ 5,273
Aggregate intrinsic value, outstanding ending balance 498,625 66,125 $ 0
Aggregate intrinsic value, vested or expected to vest 498,625    
Aggregate intrinsic value, exercisable $ 186,449 $ 0