Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Tables)

v3.20.2
Note 12 - Share-based Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   
Three Months Ended
September 30
   
Nine
Months
Ended
September 30
 
   
2020
   
2019
   
2020
   
2019
 
Research and development
  $
141
    $
151
    $
379
    $
276
 
General and administrative
   
367
     
300
     
958
     
487
 
Total share-based compensation
  $
508
    $
451
    $
1,337
    $
763
 
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, 2019
   
1,220,359
    $
5.32
    $
 
Granted
   
282,332
     
4.77
     
 
 
Exercised
   
(7,200
)    
2.25
     
 
 
Expired/cancelled
   
(78,147
)    
5.10
     
 
 
Forfeited
   
(21,945
)    
     
 
 
Balances at September 30, 2020
   
1,395,399
    $
5.24
    $
301
 
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
     
125,700
     
5.3
    $
2.28
     
125,700
     
5.2
 
$3.00
-
$3.99
     
97,905
     
6.2
     
3.88
     
97,905
     
6.2
 
$4.00
-
$4.99
     
932,744
     
8.7
     
4.56
     
483,716
     
8.4
 
$5.00
-
$10.00
     
188,900
     
7.0
     
7.84
     
130,280
     
7.2
 
$10.01
-
$34.00
     
50,150
     
2.1
     
18.16
     
50,150
     
2.1
 
 
 
 
     
1,395,399
     
7.8
    $
5.24
     
887,751
     
7.2