| 
                 
                    Closing price on 9/30/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.46 | 
                 
                
                    | High | 
                    1.49 | 
                 
                
                    | Low | 
                    1.45 | 
                     
                
                    | Volume | 
                    141,580 | 
                                 
                
                    | Split-adjusted Price | 
                    1.39 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VOS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/30/2020
             | 
            
                +0.01 / +0.68%
             |             
            
                1.46
             |           
            
                1.49
             |               
            
                1.45
             |                           
            
                1.49
             | 
            
                1.46
             |                     
            
                1.39
             |                                 
            
                141,580
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2020
             | 
            
                +0.01 / +0.68%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.47
             |                           
            
                1.48
             | 
            
                1.49
             |                     
            
                1.38
             |                                 
            
                295,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2020
             | 
            
                +0.09 / +6.52%
             |             
            
                1.44
             |           
            
                1.47
             |               
            
                1.39
             |                           
            
                1.47
             | 
            
                1.45
             |                     
            
                1.37
             |                                 
            
                143,650
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2020
             | 
            
                -0.07 / -4.83%
             |             
            
                1.45
             |           
            
                1.47
             |               
            
                1.35
             |                           
            
                1.38
             | 
            
                1.40
             |                     
            
                1.28
             |                                 
            
                227,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2020
             | 
            
                -0.02 / -1.36%
             |             
            
                1.47
             |           
            
                1.47
             |               
            
                1.44
             |                           
            
                1.45
             | 
            
                1.45
             |                     
            
                1.35
             |                                 
            
                382,310
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.46
             |           
            
                1.50
             |               
            
                1.45
             |                           
            
                1.47
             | 
            
                1.46
             |                     
            
                1.37
             |                                 
            
                235,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2020
             | 
            
                -0.03 / -2.00%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.47
             |                           
            
                1.47
             | 
            
                1.48
             |                     
            
                1.37
             |                                 
            
                282,680
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.49
             |           
            
                1.51
             |               
            
                1.49
             |                           
            
                1.50
             | 
            
                1.50
             |                     
            
                1.40
             |                                 
            
                133,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2020
             | 
            
                +0.02 / +1.35%
             |             
            
                1.48
             |           
            
                1.51
             |               
            
                1.48
             |                           
            
                1.50
             | 
            
                1.50
             |                     
            
                1.40
             |                                 
            
                129,380
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2020
             | 
            
                -0.02 / -1.33%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.47
             |                           
            
                1.48
             | 
            
                1.49
             |                     
            
                1.38
             |                                 
            
                235,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.51
             |           
            
                1.51
             |               
            
                1.47
             |                           
            
                1.50
             | 
            
                1.48
             |                     
            
                1.40
             |                                 
            
                125,300
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.54
             |           
            
                1.54
             |               
            
                1.48
             |                           
            
                1.50
             | 
            
                1.49
             |                     
            
                1.40
             |                                 
            
                219,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.51
             |           
            
                1.52
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.50
             |                     
            
                1.40
             |                                 
            
                281,320
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2020
             | 
            
                -0.01 / -0.66%
             |             
            
                1.52
             |           
            
                1.53
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.51
             |                     
            
                1.40
             |                                 
            
                98,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2020
             | 
            
                -0.01 / -0.66%
             |             
            
                1.53
             |           
            
                1.55
             |               
            
                1.50
             |                           
            
                1.51
             | 
            
                1.52
             |                     
            
                1.41
             |                                 
            
                118,570
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2020
             | 
            
                +0.05 / +3.40%
             |             
            
                1.47
             |           
            
                1.52
             |               
            
                1.45
             |                           
            
                1.52
             | 
            
                1.47
             |                     
            
                1.41
             |                                 
            
                221,980
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2020
             | 
            
                +0.01 / +0.68%
             |             
            
                1.46
             |           
            
                1.50
             |               
            
                1.44
             |                           
            
                1.47
             | 
            
                1.45
             |                     
            
                1.37
             |                                 
            
                115,750
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2020
             | 
            
                -0.02 / -1.35%
             |             
            
                1.53
             |           
            
                1.53
             |               
            
                1.46
             |                           
            
                1.46
             | 
            
                1.49
             |                     
            
                1.36
             |                                 
            
                267,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2020
             | 
            
                -0.05 / -3.27%
             |             
            
                1.46
             |           
            
                1.53
             |               
            
                1.46
             |                           
            
                1.48
             | 
            
                1.48
             |                     
            
                1.38
             |                                 
            
                283,560
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2020
             | 
            
                -0.01 / -0.65%
             |             
            
                1.52
             |           
            
                1.57
             |               
            
                1.49
             |                           
            
                1.53
             | 
            
                1.52
             |                     
            
                1.42
             |                                 
            
                293,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2020
             | 
            
                -0.06 / -3.75%
             |             
            
                1.58
             |           
            
                1.58
             |               
            
                1.51
             |                           
            
                1.54
             | 
            
                1.54
             |                     
            
                1.43
             |                                 
            
                347,830
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2020
             | 
            
                +0.03 / +1.91%
             |             
            
                1.60
             |           
            
                1.64
             |               
            
                1.55
             |                           
            
                1.60
             | 
            
                1.60
             |                     
            
                1.49
             |                                 
            
                513,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2020
             | 
            
                +0.10 / +6.80%
             |             
            
                1.49
             |           
            
                1.57
             |               
            
                1.49
             |                           
            
                1.57
             | 
            
                1.56
             |                     
            
                1.46
             |                                 
            
                633,760
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2020
             | 
            
                +0.06 / +4.26%
             |             
            
                1.40
             |           
            
                1.49
             |               
            
                1.40
             |                           
            
                1.47
             | 
            
                1.46
             |                     
            
                1.37
             |                                 
            
                209,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.41
             |           
            
                1.45
             |               
            
                1.38
             |                           
            
                1.41
             | 
            
                1.40
             |                     
            
                1.31
             |                                 
            
                201,560
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2020
             | 
            
                -0.02 / -1.40%
             |             
            
                1.44
             |           
            
                1.47
             |               
            
                1.39
             |                           
            
                1.41
             | 
            
                1.43
             |                     
            
                1.31
             |                                 
            
                160,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2020
             | 
            
                +0.02 / +1.42%
             |             
            
                1.41
             |           
            
                1.45
             |               
            
                1.41
             |                           
            
                1.43
             | 
            
                1.44
             |                     
            
                1.33
             |                                 
            
                114,260
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2020
             | 
            
                -0.01 / -0.70%
             |             
            
                1.41
             |           
            
                1.43
             |               
            
                1.41
             |                           
            
                1.41
             | 
            
                1.41
             |                     
            
                1.31
             |                                 
            
                77,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.42
             |           
            
                1.43
             |               
            
                1.40
             |                           
            
                1.42
             | 
            
                1.40
             |                     
            
                1.32
             |                                 
            
                40,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2020
             | 
            
                0.00 / 0.00%
             |             
            
                1.43
             |           
            
                1.44
             |               
            
                1.41
             |                           
            
                1.42
             | 
            
                1.42
             |                     
            
                1.32
             |                                 
            
                88,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |