| 
                 
                    Closing price on 12/6/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.64 | 
                 
                
                    | High | 
                    1.64 | 
                 
                
                    | Low | 
                    1.60 | 
                     
                
                    | Volume | 
                    43,190 | 
                                 
                
                    | Split-adjusted Price | 
                    1.53 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VOS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/6/2019
             | 
            
                +0.02 / +1.23%
             |             
            
                1.64
             |           
            
                1.64
             |               
            
                1.60
             |                           
            
                1.64
             | 
            
                1.62
             |                     
            
                1.53
             |                                 
            
                43,190
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2019
             | 
            
                -0.03 / -1.82%
             |             
            
                1.65
             |           
            
                1.65
             |               
            
                1.61
             |                           
            
                1.62
             | 
            
                1.62
             |                     
            
                1.51
             |                                 
            
                90,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2019
             | 
            
                -0.02 / -1.20%
             |             
            
                1.67
             |           
            
                1.67
             |               
            
                1.60
             |                           
            
                1.65
             | 
            
                1.61
             |                     
            
                1.54
             |                                 
            
                34,150
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2019
             | 
            
                +0.02 / +1.21%
             |             
            
                1.67
             |           
            
                1.67
             |               
            
                1.60
             |                           
            
                1.67
             | 
            
                1.61
             |                     
            
                1.55
             |                                 
            
                20,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.74
             |           
            
                1.74
             |               
            
                1.64
             |                           
            
                1.65
             | 
            
                1.67
             |                     
            
                1.54
             |                                 
            
                80,740
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2019
             | 
            
                -0.12 / -6.78%
             |             
            
                1.74
             |           
            
                1.75
             |               
            
                1.65
             |                           
            
                1.65
             | 
            
                1.66
             |                     
            
                1.54
             |                                 
            
                325,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2019
             | 
            
                +0.08 / +4.73%
             |             
            
                1.69
             |           
            
                1.77
             |               
            
                1.66
             |                           
            
                1.77
             | 
            
                1.69
             |                     
            
                1.65
             |                                 
            
                77,390
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2019
             | 
            
                -0.05 / -2.87%
             |             
            
                1.74
             |           
            
                1.77
             |               
            
                1.66
             |                           
            
                1.69
             | 
            
                1.68
             |                     
            
                1.57
             |                                 
            
                76,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2019
             | 
            
                -0.02 / -1.14%
             |             
            
                1.75
             |           
            
                1.75
             |               
            
                1.66
             |                           
            
                1.74
             | 
            
                1.67
             |                     
            
                1.62
             |                                 
            
                74,120
             |            
            
                 
             |                                       
         
    
        
            | 
                11/25/2019
             | 
            
                +0.01 / +0.57%
             |             
            
                1.74
             |           
            
                1.76
             |               
            
                1.68
             |                           
            
                1.76
             | 
            
                1.71
             |                     
            
                1.64
             |                                 
            
                22,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.68
             |           
            
                1.79
             |               
            
                1.68
             |                           
            
                1.75
             | 
            
                1.73
             |                     
            
                1.63
             |                                 
            
                3,080
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2019
             | 
            
                -0.05 / -2.78%
             |             
            
                1.75
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.75
             | 
            
                1.71
             |                     
            
                1.63
             |                                 
            
                45,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2019
             | 
            
                +0.05 / +2.86%
             |             
            
                1.68
             |           
            
                1.84
             |               
            
                1.68
             |                           
            
                1.80
             | 
            
                1.75
             |                     
            
                1.68
             |                                 
            
                64,420
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2019
             | 
            
                -0.05 / -2.78%
             |             
            
                1.80
             |           
            
                1.82
             |               
            
                1.74
             |                           
            
                1.75
             | 
            
                1.77
             |                     
            
                1.63
             |                                 
            
                64,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2019
             | 
            
                -0.04 / -2.17%
             |             
            
                1.85
             |           
            
                1.87
             |               
            
                1.79
             |                           
            
                1.80
             | 
            
                1.85
             |                     
            
                1.68
             |                                 
            
                42,210
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2019
             | 
            
                +0.09 / +5.14%
             |             
            
                1.75
             |           
            
                1.87
             |               
            
                1.70
             |                           
            
                1.84
             | 
            
                1.78
             |                     
            
                1.71
             |                                 
            
                277,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2019
             | 
            
                +0.01 / +0.57%
             |             
            
                1.74
             |           
            
                1.79
             |               
            
                1.70
             |                           
            
                1.75
             | 
            
                1.71
             |                     
            
                1.63
             |                                 
            
                29,190
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2019
             | 
            
                -0.03 / -1.69%
             |             
            
                1.72
             |           
            
                1.76
             |               
            
                1.72
             |                           
            
                1.74
             | 
            
                1.74
             |                     
            
                1.62
             |                                 
            
                44,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2019
             | 
            
                +0.04 / +2.31%
             |             
            
                1.73
             |           
            
                1.77
             |               
            
                1.73
             |                           
            
                1.77
             | 
            
                1.75
             |                     
            
                1.65
             |                                 
            
                14,490
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2019
             | 
            
                +0.03 / +1.76%
             |             
            
                1.70
             |           
            
                1.75
             |               
            
                1.69
             |                           
            
                1.73
             | 
            
                1.69
             |                     
            
                1.61
             |                                 
            
                7,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2019
             | 
            
                -0.01 / -0.58%
             |             
            
                1.72
             |           
            
                1.75
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.73
             |                     
            
                1.58
             |                                 
            
                35,290
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.75
             |           
            
                1.75
             |               
            
                1.70
             |                           
            
                1.71
             | 
            
                1.73
             |                     
            
                1.59
             |                                 
            
                17,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2019
             | 
            
                -0.04 / -2.29%
             |             
            
                1.75
             |           
            
                1.77
             |               
            
                1.71
             |                           
            
                1.71
             | 
            
                1.76
             |                     
            
                1.59
             |                                 
            
                13,660
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2019
             | 
            
                +0.05 / +2.94%
             |             
            
                1.70
             |           
            
                1.75
             |               
            
                1.68
             |                           
            
                1.75
             | 
            
                1.71
             |                     
            
                1.63
             |                                 
            
                20,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2019
             | 
            
                -0.06 / -3.41%
             |             
            
                1.75
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.73
             |                     
            
                1.58
             |                                 
            
                292,620
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2019
             | 
            
                -0.01 / -0.56%
             |             
            
                1.77
             |           
            
                1.77
             |               
            
                1.70
             |                           
            
                1.76
             | 
            
                1.70
             |                     
            
                1.64
             |                                 
            
                78,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2019
             | 
            
                +0.02 / +1.14%
             |             
            
                1.71
             |           
            
                1.77
             |               
            
                1.71
             |                           
            
                1.77
             | 
            
                1.73
             |                     
            
                1.65
             |                                 
            
                39,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2019
             | 
            
                -0.01 / -0.57%
             |             
            
                1.72
             |           
            
                1.85
             |               
            
                1.71
             |                           
            
                1.75
             | 
            
                1.76
             |                     
            
                1.63
             |                                 
            
                12,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2019
             | 
            
                +0.04 / +2.33%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.72
             |                           
            
                1.76
             | 
            
                1.74
             |                     
            
                1.64
             |                                 
            
                105,870
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.84
             |           
            
                1.84
             |               
            
                1.72
             |                           
            
                1.72
             | 
            
                1.73
             |                     
            
                1.60
             |                                 
            
                22,510
             |  
            
                 
             |                                                              
             
    
         
    
    
 |