Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Tables)

v3.22.1
Note 12 - Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended March 31,

 
   

2022

   

2021

 

Research and development

  $ 91     $ 131  

General and administrative

    217       380  

Total share-based compensation

  $ 308     $ 511  
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, 2021

    1,896,600     $ 5.25     $ 169  

Granted

    325,000       3.38          

Exercised

                   

Expired/cancelled

    (10,000 )     27.18          

Forfeited

    (52,187 )     4.94          

Balances at March 31, 2022

    2,159,413     $ 4.88     $  
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     285,500       7.3     $ 2.70       120,500       3.7  

$3.00

- $3.99     330,508       8.8       3.82       68,647       6.7  

$4.00

- $4.99     928,150       7.2       4.51       840,151       7.1  

$5.00

- $9.99     571,088       7.9       6.47       272,963       6.4  

$10.00

- $27.06     44,167       4.2       14.32       34,167       2.8  
          2,159,413       7.6     $ 4.88       1,336,428       6.5