| 
                 
                    Closing price on 7/20/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.46 | 
                 
                
                    | High | 
                    1.46 | 
                 
                
                    | Low | 
                    1.44 | 
                     
                
                    | Volume | 
                    284,120 | 
                                 
                
                    | Split-adjusted Price | 
                    1.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VOS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/20/2020
             | 
            
                -0.01 / -0.68%
             |             
            
                1.46
             |           
            
                1.46
             |               
            
                1.44
             |                           
            
                1.45
             | 
            
                1.44
             |                     
            
                1.35
             |                                 
            
                284,120
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.47
             |           
            
                1.48
             |               
            
                1.45
             |                           
            
                1.46
             | 
            
                1.45
             |                     
            
                1.36
             |                                 
            
                51,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2020
             | 
            
                -0.01 / -0.68%
             |             
            
                1.47
             |           
            
                1.50
             |               
            
                1.44
             |                           
            
                1.46
             | 
            
                1.46
             |                     
            
                1.36
             |                                 
            
                159,860
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.51
             |           
            
                1.51
             |               
            
                1.45
             |                           
            
                1.47
             | 
            
                1.46
             |                     
            
                1.37
             |                                 
            
                158,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2020
             | 
            
                -0.01 / -0.68%
             |             
            
                1.49
             |           
            
                1.49
             |               
            
                1.46
             |                           
            
                1.47
             | 
            
                1.48
             |                     
            
                1.37
             |                                 
            
                85,260
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2020
             | 
            
                -0.02 / -1.33%
             |             
            
                1.50
             |           
            
                1.52
             |               
            
                1.45
             |                           
            
                1.48
             | 
            
                1.47
             |                     
            
                1.38
             |                                 
            
                431,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.53
             |           
            
                1.53
             |               
            
                1.49
             |                           
            
                1.50
             | 
            
                1.50
             |                     
            
                1.40
             |                                 
            
                58,120
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.50
             |           
            
                1.52
             |               
            
                1.46
             |                           
            
                1.50
             | 
            
                1.48
             |                     
            
                1.40
             |                                 
            
                322,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.57
             |           
            
                1.57
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.53
             |                     
            
                1.40
             |                                 
            
                149,050
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2020
             | 
            
                -0.05 / -3.23%
             |             
            
                1.52
             |           
            
                1.59
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.53
             |                     
            
                1.40
             |                                 
            
                166,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2020
             | 
            
                +0.07 / +4.73%
             |             
            
                1.48
             |           
            
                1.58
             |               
            
                1.47
             |                           
            
                1.55
             | 
            
                1.54
             |                     
            
                1.44
             |                                 
            
                151,990
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2020
             | 
            
                +0.05 / +3.50%
             |             
            
                1.49
             |           
            
                1.50
             |               
            
                1.43
             |                           
            
                1.48
             | 
            
                1.48
             |                     
            
                1.38
             |                                 
            
                92,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2020
             | 
            
                -0.05 / -3.38%
             |             
            
                1.47
             |           
            
                1.47
             |               
            
                1.42
             |                           
            
                1.43
             | 
            
                1.44
             |                     
            
                1.33
             |                                 
            
                73,430
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2020
             | 
            
                +0.06 / +4.23%
             |             
            
                1.45
             |           
            
                1.48
             |               
            
                1.41
             |                           
            
                1.48
             | 
            
                1.44
             |                     
            
                1.38
             |                                 
            
                127,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2020
             | 
            
                -0.05 / -3.40%
             |             
            
                1.47
             |           
            
                1.53
             |               
            
                1.42
             |                           
            
                1.42
             | 
            
                1.44
             |                     
            
                1.32
             |                                 
            
                261,330
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2020
             | 
            
                -0.09 / -5.77%
             |             
            
                1.56
             |           
            
                1.56
             |               
            
                1.46
             |                           
            
                1.47
             | 
            
                1.47
             |                     
            
                1.37
             |                                 
            
                473,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2020
             | 
            
                -0.02 / -1.27%
             |             
            
                1.58
             |           
            
                1.60
             |               
            
                1.55
             |                           
            
                1.56
             | 
            
                1.57
             |                     
            
                1.45
             |                                 
            
                63,580
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2020
             | 
            
                +0.01 / +0.64%
             |             
            
                1.60
             |           
            
                1.60
             |               
            
                1.53
             |                           
            
                1.58
             | 
            
                1.57
             |                     
            
                1.47
             |                                 
            
                127,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2020
             | 
            
                -0.04 / -2.48%
             |             
            
                1.61
             |           
            
                1.63
             |               
            
                1.57
             |                           
            
                1.57
             | 
            
                1.60
             |                     
            
                1.46
             |                                 
            
                219,450
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2020
             | 
            
                -0.03 / -1.83%
             |             
            
                1.64
             |           
            
                1.64
             |               
            
                1.60
             |                           
            
                1.61
             | 
            
                1.62
             |                     
            
                1.50
             |                                 
            
                237,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2020
             | 
            
                -0.04 / -2.38%
             |             
            
                1.68
             |           
            
                1.70
             |               
            
                1.61
             |                           
            
                1.64
             | 
            
                1.65
             |                     
            
                1.53
             |                                 
            
                301,950
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2020
             | 
            
                -0.02 / -1.18%
             |             
            
                1.64
             |           
            
                1.70
             |               
            
                1.64
             |                           
            
                1.68
             | 
            
                1.68
             |                     
            
                1.56
             |                                 
            
                322,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.71
             |               
            
                1.66
             |                           
            
                1.70
             | 
            
                1.69
             |                     
            
                1.58
             |                                 
            
                227,490
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2020
             | 
            
                -0.04 / -2.30%
             |             
            
                1.74
             |           
            
                1.76
             |               
            
                1.69
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.58
             |                                 
            
                308,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2020
             | 
            
                +0.08 / +4.82%
             |             
            
                1.66
             |           
            
                1.75
             |               
            
                1.63
             |                           
            
                1.74
             | 
            
                1.70
             |                     
            
                1.62
             |                                 
            
                709,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2020
             | 
            
                -0.04 / -2.35%
             |             
            
                1.76
             |           
            
                1.76
             |               
            
                1.62
             |                           
            
                1.66
             | 
            
                1.70
             |                     
            
                1.55
             |                                 
            
                682,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.59
             |           
            
                1.70
             |               
            
                1.59
             |                           
            
                1.70
             | 
            
                1.66
             |                     
            
                1.58
             |                                 
            
                793,230
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2020
             | 
            
                +0.04 / +2.41%
             |             
            
                1.77
             |           
            
                1.77
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.76
             |                     
            
                1.58
             |                                 
            
                1,380,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2020
             | 
            
                +0.10 / +6.41%
             |             
            
                1.54
             |           
            
                1.66
             |               
            
                1.50
             |                           
            
                1.66
             | 
            
                1.63
             |                     
            
                1.55
             |                                 
            
                1,626,860
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2020
             | 
            
                -0.05 / -3.11%
             |             
            
                1.65
             |           
            
                1.66
             |               
            
                1.56
             |                           
            
                1.56
             | 
            
                1.60
             |                     
            
                1.45
             |                                 
            
                516,720
             |  
            
                 
             |                                                              
             
    
         
    
    
 |