Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Stock-based Compensation (Tables)

v3.20.2
Note 10 - Stock-based Compensation (Tables)
 6 Months Ended
Jun. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Option numbers are in (000's)            
    Six months ended June 30, 2020
    Options   Weighted average
exercise price		   Weighted average
remaining
contractual
life (years
)
             
Outstanding, beginning of period    
5,941
     $
2.84
      
 
  
Granted    
6,272
      
6.84
      
 
  
Exercised    
(191
 )    
2.55
      
 
  
Forfeited    
(71
 )    
2.87
      
 
  
Outstanding, end of the period    
11,951
      
4.91
      
8.4
  
Exercisable, end of the period    
4,190
      
2.97
      
6.6
  
Vested and expected to vest, end of period    
10,786
      
4.79
      
8.3
  
                         
Option numbers are in (000's)            
    Six months ended June 30, 2019
    Options   Weighted average
exercise price		   Weighted average
remaining
contractual
life (years)
             
Outstanding, beginning of period    
4,489
     $
3.11
      
 
  
Granted    
1,789
      
1.93
      
 
  
Exercised    
(23
 )    
1.11
      
 
  
Forfeited    
(130
 )    
2.59
      
 
  
Expired    
(47
 )    
4.23
      
 
  
Outstanding, end of the period    
6,078
      
2.83
      
8.0
  
Exercisable, end of the period    
3,257
      
3.36
      
7.0
  
Vested and expected to vest, end of period    
5,654
      
2.87
      
7.9
  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
      Six months ended
June 30, 2020		       Six months ended
June 30, 2019		  
                 
Risk-free interest rate    
1.28
 %    
2.30
 %
Expected dividend yield    
–
      
–
  
Expected volatility    
85.9
 %    
83.9
 %
Expected life of options (in years)    
5
      
5
  
Grant date fair value   $
4.61
     $
1.30
  
Schedule of Share-based Payment Award, Options, Grants in Period [Table Text Block]
Option numbers are in (000's)    
Six months ended
June 30, 2020
      
Six months ended
June 30, 2019
  
     
Number of options
      
Number of options
  
                 
Cliff vesting after one year anniversary    
300
      
335
  
3 year vesting (50%-25%-25%)    
862
      
–
  
4 year vesting (50%-16 2/3%-16 2/3%-16 2/3%)    
5,110
      
1,454
  
Total stock options granted in the period    
6,272
      
1,789
  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
    Six months ended, June 30, 2020   Six months ended, June 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
  
Outstanding, end of period    
685
     $
7.01
      
80
     $
2.0
  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
    Three months ended June 30,   Six months ended June 30,
      2020       2019       2020       2019  
                                 
Research and development   $
933
     $
157
     $
1,733
     $
275
  
General and administrative    
6,768
      
411
      
10,369
      
955
  
    $
7,701
     $
568
     $
12,102
     $
1,230