Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Equity (Tables)

v3.20.2
Note 5 - Equity (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended September 30,

   

Nine Months Ended September 30,

 
   

2020

   

2019

   

2020

   

2019

 

General and administrative

  $ 366     $ 430     $ 1,029     $ 1,003  

Research and development

    94       59       236       152  

Total Stock-based Compensation Expense

  $ 460     $ 489     $ 1,265     $ 1,155  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Nine Months Ended September 30,

 
Stock Option Assumptions:   2020     2019  

Risk-free interest rate

  0.2% to 0.5%     1.0% to 1.3%  

Expected volatility of common stock

  125.4% to 128.0%     85% to 100%  

Expected life (years)

  3.8 to 6.3     5.3 to 6.3  

Expected dividend yield

  —%     —%  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
           

Weighted Average Grant Date

   

Weighted Average

   

Weighted Average Remaining Contractual

   

Aggregate Intrinsic

 
   

Number of Shares

   

Fair Value

   

Exercise Price

   

Term (in years)

   

Value

 

Outstanding, December 31, 2019

    3,836,000     $ 1.59     $ 2.26       8.3     $  

Granted

    1,554,750     $ 0.83     $ 0.95                  

Exercised

        $     $                  

Forfeited

    (20,000 )   $ 0.89     $ 1.06                  

Outstanding, September 30, 2020

    5,370,750     $ 1.37     $ 1.88       8.1     $  

Exercisable, September 30, 2020

    1,978,917     $ 1.91     $ 2.79       7.2     $  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
           

Weighted Average Grant Date

   

Weighted Average Remaining Contractual

 
   

Number of Shares

   

Fair Value

   

Term (in years)

 

Unvested Shares, December 31, 2019

    316,907     $ 1.31       3.5  

Granted

    353,211     $ 0.93          

Vested

    (79,227 )   $ 1.31          

Unvested Shares, September 30, 2020

    590,891     $ 1.08       3.3