Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Share-based Compensation (Tables)

v3.21.2
Note 11 - Share-based Compensation (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

September 30

   

Nine Months Ended

September 30

 
   

2021

   

2020

   

2021

   

2020

 

Research and development

  $ 100     $ 141     $ 371     $ 379  

General and administrative

    203       367       889       958  

Total share-based compensation

  $ 303     $ 508     $ 1,260     $ 1,337  
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     $ 5.35     $ 7,109  

Granted

    623,008       5.21          

Exercised

    (40,000 )     6.09       132  

Expired/cancelled

    (8,476 )     4.44          

Forfeited

    (5,000 )     10.04          

Balances at September 30, 2021

    1,959,100     $ 5.28     $ 252  
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

    123,000       4.2     $ 2.40       123,000       4.2  
$3.00 -

$3.99

    233,008       7.5       3.78       22,500       5.2  
$4.00 -

$4.99

    938,567       7.7       4.51       801,525       7.5  
$5.00 -

$9.99

    594,525       8.5       6.37       224,525       6.3  
$10.00 -

$27.06

    70,000       3.5       16.49       53,333       1.6  
          1,959,100       7.5     $ 5.63       1,224,883       6.7