Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Tables)

v3.23.1
Note 12 - Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended March 31,

 
   

2023

   

2022

 

Research and development

  $ 132     $ 91  

General and administrative

    290       217  

Total share-based compensation

  $ 422     $ 308  
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, 2022

    2,782,248     $ 4.12     $ 17  

Granted

                   

Expired/cancelled

                   

Forfeited

    (8,750 )     10.04          

Balances at March 31, 2023

    2,773,498     $ 4.10     $  
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)

 
$1.00 -

$1.99

    177,000       9.5     $ 1.50              
$2.00 -

$2.99

    790,398       7.7       2.51       283,711       5.5  
$3.00 -

$3.99

    409,393       6.8       3.82       259,918       5.7  
$4.00 -

$4.99

    862,182       6.3       4.58       836,014       6.2  
$5.00 -

$16.00

    534,525       6.9       6.74       330,150       6.1  
          2,773,498       7.1     $ 4.10       1,709,793       6.0