Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stock-based Compensation (Tables)

v3.20.2
Note 4 - Stock-based Compensation (Tables)
 9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
Three Months
Ended
    
Three Months
Ended
    
Nine Months
Ended
    
Nine Months
Ended
  
   
September 30,
2020
    
September 30,
2019
    
September 30,
2020
    
September 30,
2019
  
Risk-free interest rate
  
0.26%
    
n/a
      
0.26%
-
0.33%
    
2.31%
  
Dividend yield
  
0%
    
n/a
      
 
0%
 
    
0%
  
Expected term (in years)
  
5
    
n/a
      
 
5
 
    
5
  
Expected volatility
  
69.6%
    
n/a
      
65.8%
-
69.6%
    
57.9%
  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
   
Options outstanding
            
           
Weighted average
  
Weighted average
  
Aggregate
  
           
exercise price
  
remaining
  
intrinsic
  
Incentive Options
  
Shares
    
per share
  
contractual term
  
value
  
Outstanding at December 31, 2019
    
1,349,000
     $
0.23
  
 
    
 
  
Options granted
    
-
      
-
  
 
    
 
  
Options exercised
    
-
      
-
  
 
    
 
  
Options expired
    
(129,000
 )    
0.17
  
 
    
 
  
Options forfeited
    
-
      
-
  
 
    
 
  
Outstanding at March 31, 2020
    
1,220,000
     $
0.24
  
 
    
 
  
Options granted
    
10,000
      
0.15
  
 
    
 
  
Options exercised
    
-
      
-
  
 
    
 
  
Options expired
    
(10,000
 )    
0.19
  
 
    
 
  
Options forfeited
    
-
      
-
  
 
    
 
  
Outstanding at June 30, 2020
    
1,220,000
     $
0.24
  
 
    
 
  
Options granted
    
210,000
      
0.66
  
 
    
 
  
Options exercised
    
-
      
-
  
 
    
 
  
Options expired
    
-
      
-
  
 
    
 
  
Options forfeited
    
-
      
-
  
 
    
 
  
Outstanding at September 30, 2020
    
1,430,000
     $
0.30
  
4 years, 5 months
   $
487,773
  
Exercisable at September 30, 2020
    
1,208,500
     $
0.24
  
3 years, 5 months
   $
482,268
  
Schedule of Nonvested Share Activity [Table Text Block]
   
Nonvested
  
           
Weighted average
  
           
grant date
  
   
Shares
    
fair value
  
Nonvested at January 1, 2020
    
23,500
     $
0.17
  
Granted
    
-
      
-
  
Vested
    
(5,000
 )    
0.21
  
Forfeited
    
-
      
-
  
Nonvested at March 31, 2020
    
18,500
     $
0.15
  
Granted
    
10,000
      
0.08
  
Vested
    
(15,500
 )    
0.16
  
Forfeited
    
-
      
-
  
Nonvested at June 30, 2020
    
13,000
     $
0.09
  
Granted
    
210,000
      
0.37
  
Vested
    
(1,500
 )    
0.12
  
Forfeited
    
-
      
-
  
Nonvested at September 30, 2020
    
221,500
     $
0.36