Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Share-based Compensation (Tables)

v3.21.1
Note 11 - Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   
Three Months Ended
March 31
 
   
2021
   
2020
 
Research and development
  $
131
    $
107
 
General and administrative
   
380
     
286
 
Total share-based compensation
  $
511
    $
393
 
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
   
(13,474
)    
6.54
     
 
 
Forfeited
   
     
     
 
 
Balances at March 31, 2021
   
1,421,094
    $
5.60
    $
5,589
 
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
     
4.7
    $
2.41
     
120,500
     
4.7
 
$3.00
-
$3.99
   
17,500
     
6.0
     
3.84
     
17,500
     
6.0
 
$4.00
-
$4.99
   
938,567
     
8.2
     
4.51
     
680,974
     
7.9
 
$5.00
-
$9.99
   
274,527
     
7.4
     
8.03
     
198,216
     
6.7
 
$10.00
-
$27.06
   
70,000
     
4.0
     
16.62
     
50,000
     
1.6
 
 
 
 
   
1,421,094
     
7.5
    $
5.60
     
1,067,190
     
7.0