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Note 4 - Stockholders' Equity
 3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Stockholders' Equity Note Disclosure [Text Block]
4.
 Stockholders’ Equity
 
The Company has granted options to purchase shares of common stock. The following is a summary of option award activity during the
three
months ended
March 31, 2020
:
    
   
Total Stock Options Outstanding
    
Weighted Average Exercise Price per Share
  
December 31, 2019
    
136,105
     $
40.07
  
Granted
    
—
      
—
  
Vested
    
—
      
—
  
Forfeited, Canceled
    
(39,708
 )    
52.79
  
March 31, 2020
    
96,397
     $
34.83
  
 
 
The following is a summary of outstanding stock options as of
March 31, 2020
:
 
   
As of March 31, 2020
  
   
Stock Options Outstanding
    
Vested Stock Options
  
Quantity
    
96,397
      
96,397
  
Weighted Average Exercise Price
   $
34.83
     $
34.83
  
Weighted Average Remaining Contractual Term (in Years)
    
3.47
      
3.47
  
Intrinsic Value
   $
—
     $
—
  
 
For the
three
months ended
March 31, 2020
and
2019
, the Company granted
no
stock options. As of
March 31, 2020
and
2019
, the total fair value of options vested was
$0
.
 
As of
March 31, 2020
, there was
no
total compensation cost
not
yet recognized related to unvested stock options.