Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Tables)

v3.21.2
Note 12 - Share-based Compensation (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

June 30

   

Six Months Ended

June 30

 
   

2021

   

2020

   

2021

   

2020

 

Research and development

  $ 140     $ 131     $ 271     $ 238  

General and administrative

    306       305       686       591  

Total share-based compensation

  $ 446     $ 436     $ 957     $ 829  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
   

Shares

Underlying

Options

Outstanding

   

Weighted

Average Exercise

Price Per Share

   

Aggregate

Intrinsic Value

 

Balances at December 31, 2020

    1,389,568     $ 5.38     $ 7,109  

Granted

    85,000       9.69          

Exercised

    (40,000 )     6.11       132  

Expired/cancelled

    (13,476 )     6.54          

Balances at June 30, 2021

    1,421,092     $ 5.63     $ -  
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
       

Outstanding, Vested and Expected to Vest

   

Options Vested and Exercisable

 

Per Share Exercise

Price

 

Shares

   

Weighted Average Remaining

Contractual Life

(Years)

   

Weighted Average

Exercise Price

   

Options

Exercisable

   

Weighted Average Remaining

Contractual Life

(Years)

 
$2.00 -

$2.99

    120,500       4.5     $ 2.44       120,500       4.5  
$3.00 -

$3.99

    2,500       5.8       3.06       2,500       5.8  
$4.00 -

$4.99

    953,567       7.9       4.51       792,526       7.7  
$5.00 -

$9.99

    274,525       7.1       8.10       216,088       6.5  
$10.00 -

$27.06

    70,000       3.7       16.80       51,667       1.6  
          1,421,092       7.2     $ 5.63       1,183,281       6.9