Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Stock-based Compensation (Tables)

v3.20.2
Note 10 - Stock-based Compensation (Tables)
 9 Months Ended
Sep. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Option numbers are in (000's)            
        Nine months ended
September 30, 2020		    
      Options       Weighted average
exercise price		       Weighted average remaining
contractual
life (years)		  
             
Outstanding, beginning of period    
5,941
     $
2.84
      
 
  
Granted    
6,352
      
6.82
      
 
  
Exercised    
(215
 )    
2.49
      
 
  
Forfeited    
(71
 )    
2.87
      
 
  
Outstanding, end of the period    
12,007
      
4.93
      
8.2
  
Exercisable, end of the period    
4,310
      
2.99
      
6.5
  
Vested and expected to vest, end of period    
10,853
      
4.82
      
8.1
  
                         
Option numbers are in (000's)            
        Nine months ended
September 30, 2019		    
      Options       Weighted average
exercise price		       Weighted average remaining
contractual
life (years)		  
             
Outstanding, beginning of period    
4,489
     $
3.11
      
 
  
Granted    
2,018
      
1.97
      
 
  
Exercised    
(34
 )    
1.11
      
 
  
Forfeited    
(322
 )    
2.36
      
 
  
Expired    
(47
 )    
4.33
      
 
  
Outstanding, end of the period    
6,104
      
2.81
      
7.8
  
Exercisable, end of the period    
3,340
      
3.34
      
6.8
  
Vested and expected to vest, end of period    
5,689
      
2.86
      
7.7
  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
      Nine months ended
September 30, 2020		       Nine months ended
September 30, 2019		  
         
Risk-free interest rate    
1.27
 %    
2.21
 %
Expected dividend yield    
-
      
-
  
Expected volatility    
85.9
 %    
83.9
 %
Expected life of options (in years)    
5
      
5
  
Grant date fair value   $
4.59
     $
1.32
  
Schedule of Share-based Payment Award, Options, Grants in Period [Table Text Block]
Option numbers are in (000's)     Nine months ended
September 30, 2020		       Nine months ended
September 30, 2019		  
      Number of options       Number of options  
         
Cliff vesting after one year anniversary    
300
      
335
  
3 year vesting (50%-25%-25%)    
862
      
160
  
4 year vesting (50%-16 2/3%-16 2/3%-16 2/3%)    
5,190
      
1,523
  
Total stock options granted in the period    
6,352
      
2,018
  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
    Nine months ended,
September 30, 2020		   Nine months ended,
September 30, 2019
      Number
(in thousands)		       Weighted
average grant
date fair value		       Number
(in thousands)		       Weighted
average grant
date fair value		  
Outstanding, beginning of period    
40
     $
2.00
      
-
     $
-
  
Granted    
645
      
7.32
      
80
      
2.0
  
Vested    
(685
 )    
7.01
      
(40
 )    
2.0
  
Outstanding, end of period    
-
     $
-
      
40
     $
2.0
  
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   $
1,051
     $
34
     $
2,784
     $
309
  
General and administrative    
3,854
      
470
      
14,223
      
1,425
  
    $
4,905
     $
504
     $
17,007
     $
1,734