Quarterly report pursuant to Section 13 or 15(d)

4. Stock-Based Compensation (Tables)

v3.10.0.1
4. Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2018
Notes to Financial Statements  
Black-Scholes option pricing model assumptions
    Three Months Ended   Six Months Ended  
    June 30, 2018   June 30, 2018  
Risk-free interest rate   2.71% - 2.92%   2.65% - 2.92%  
Dividend yield   0%   0%  
Expected term   5 years   5 years  
Expected volatility   49.5% - 51.3%   49.0%-51.3%  
Options outstanding
       Options outstanding    
          Weighted average   Weighted average
          exercise price   remaining

  Incentive Options

   Shares     per share  

contractual term
Outstanding at January 1, 2018       1,288,000     $ 0.21    
Options granted     160,000       0.45    
Options exercised     -       -    
Options expired     (52,500 )     0.34    
Options forfeited     -       -    
Outstanding at June 30, 2018       1,395,500     $ 0.23  

5 years, 4 months
Exercisable at June 30, 2018       1,129,500     $ 0.19  

4 years, 9 months
Nonvested stock awards
    Nonvested      
          Weighted average  
          grant date  
    Shares     fair value  
Nonvested at January 1, 2018     232,000     $ 0.10  
Granted     160,000       0.20  
Vested     (126,000 )     0.10  
Forfeited     -       -  
Nonvested at June 30, 2018     266,000     $ 0.16