| 
                 
                    Closing price on 7/31/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    39.00 | 
                 
                
                    | High | 
                    39.20 | 
                 
                
                    | Low | 
                    38.30 | 
                     
                
                    | Volume | 
                    231,540 | 
                                 
                
                    | Split-adjusted Price | 
                    6.53 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/31/2018
             | 
            
                +0.60 / +1.58%
             |             
            
                39.00
             |           
            
                39.20
             |               
            
                38.30
             |                           
            
                38.55
             | 
            
                38.84
             |                     
            
                6.53
             |                                 
            
                231,540
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2018
             | 
            
                +2.45 / +6.90%
             |             
            
                36.40
             |           
            
                37.95
             |               
            
                36.40
             |                           
            
                37.95
             | 
            
                37.66
             |                     
            
                6.43
             |                                 
            
                406,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2018
             | 
            
                +1.10 / +3.20%
             |             
            
                34.40
             |           
            
                35.70
             |               
            
                34.10
             |                           
            
                35.50
             | 
            
                34.90
             |                     
            
                6.01
             |                                 
            
                145,150
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2018
             | 
            
                +0.20 / +0.58%
             |             
            
                34.10
             |           
            
                34.50
             |               
            
                33.75
             |                           
            
                34.40
             | 
            
                34.21
             |                     
            
                5.83
             |                                 
            
                74,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2018
             | 
            
                0.00 / 0.00%
             |             
            
                34.40
             |           
            
                34.40
             |               
            
                33.60
             |                           
            
                34.20
             | 
            
                33.98
             |                     
            
                5.79
             |                                 
            
                53,120
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2018
             | 
            
                +0.65 / +1.94%
             |             
            
                34.00
             |           
            
                34.50
             |               
            
                33.60
             |                           
            
                34.20
             | 
            
                34.09
             |                     
            
                5.79
             |                                 
            
                88,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2018
             | 
            
                -0.25 / -0.74%
             |             
            
                33.00
             |           
            
                34.50
             |               
            
                33.00
             |                           
            
                33.55
             | 
            
                34.05
             |                     
            
                5.68
             |                                 
            
                61,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2018
             | 
            
                -0.40 / -1.17%
             |             
            
                33.80
             |           
            
                34.00
             |               
            
                33.30
             |                           
            
                33.80
             | 
            
                33.65
             |                     
            
                5.73
             |                                 
            
                27,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2018
             | 
            
                +0.25 / +0.74%
             |             
            
                34.20
             |           
            
                34.20
             |               
            
                33.15
             |                           
            
                34.20
             | 
            
                33.76
             |                     
            
                5.79
             |                                 
            
                84,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2018
             | 
            
                +1.65 / +5.11%
             |             
            
                32.50
             |           
            
                34.50
             |               
            
                32.50
             |                           
            
                33.95
             | 
            
                33.56
             |                     
            
                5.75
             |                                 
            
                79,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2018
             | 
            
                +0.30 / +0.94%
             |             
            
                31.90
             |           
            
                32.50
             |               
            
                31.80
             |                           
            
                32.30
             | 
            
                32.14
             |                     
            
                5.47
             |                                 
            
                58,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2018
             | 
            
                -0.30 / -0.93%
             |             
            
                32.50
             |           
            
                32.50
             |               
            
                31.80
             |                           
            
                32.00
             | 
            
                31.94
             |                     
            
                5.42
             |                                 
            
                53,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/13/2018
             | 
            
                +1.00 / +3.19%
             |             
            
                32.20
             |           
            
                32.30
             |               
            
                31.05
             |                           
            
                32.30
             | 
            
                32.01
             |                     
            
                5.47
             |                                 
            
                220,430
             |            
            
                 
             |                                       
         
    
        
            | 
                7/12/2018
             | 
            
                -0.50 / -1.57%
             |             
            
                32.00
             |           
            
                32.50
             |               
            
                31.20
             |                           
            
                31.30
             | 
            
                31.52
             |                     
            
                5.30
             |                                 
            
                113,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/11/2018
             | 
            
                -0.65 / -2.00%
             |             
            
                32.00
             |           
            
                33.00
             |               
            
                31.00
             |                           
            
                31.80
             | 
            
                31.34
             |                     
            
                5.39
             |                                 
            
                125,750
             |            
            
                 
             |                                       
         
    
        
            | 
                7/10/2018
             | 
            
                -0.05 / -0.15%
             |             
            
                32.50
             |           
            
                33.50
             |               
            
                32.00
             |                           
            
                32.45
             | 
            
                32.75
             |                     
            
                5.50
             |                                 
            
                122,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2018
             | 
            
                -0.50 / -1.52%
             |             
            
                33.50
             |           
            
                33.70
             |               
            
                32.50
             |                           
            
                32.50
             | 
            
                32.85
             |                     
            
                5.51
             |                                 
            
                47,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2018
             | 
            
                +1.00 / +3.13%
             |             
            
                32.50
             |           
            
                33.10
             |               
            
                31.80
             |                           
            
                33.00
             | 
            
                32.29
             |                     
            
                5.59
             |                                 
            
                35,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2018
             | 
            
                -0.90 / -2.74%
             |             
            
                33.70
             |           
            
                33.70
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.56
             |                     
            
                5.42
             |                                 
            
                31,230
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2018
             | 
            
                -0.10 / -0.30%
             |             
            
                33.00
             |           
            
                34.00
             |               
            
                32.90
             |                           
            
                32.90
             | 
            
                33.03
             |                     
            
                5.57
             |                                 
            
                228,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2018
             | 
            
                -0.60 / -1.79%
             |             
            
                33.90
             |           
            
                34.50
             |               
            
                32.80
             |                           
            
                33.00
             | 
            
                33.06
             |                     
            
                5.59
             |                                 
            
                127,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/2/2018
             | 
            
                -1.25 / -3.59%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                32.60
             |                           
            
                33.60
             | 
            
                33.46
             |                     
            
                5.69
             |                                 
            
                93,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2018
             | 
            
                +0.35 / +1.01%
             |             
            
                33.75
             |           
            
                35.50
             |               
            
                33.75
             |                           
            
                34.85
             | 
            
                34.56
             |                     
            
                5.90
             |                                 
            
                485,870
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2018
             | 
            
                -1.00 / -2.82%
             |             
            
                35.00
             |           
            
                35.50
             |               
            
                34.00
             |                           
            
                34.50
             | 
            
                34.47
             |                     
            
                5.84
             |                                 
            
                82,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2018
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                36.20
             |               
            
                34.60
             |                           
            
                35.50
             | 
            
                35.37
             |                     
            
                6.01
             |                                 
            
                716,730
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2018
             | 
            
                +0.50 / +1.43%
             |             
            
                34.45
             |           
            
                35.80
             |               
            
                34.45
             |                           
            
                35.50
             | 
            
                35.39
             |                     
            
                6.01
             |                                 
            
                114,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2018
             | 
            
                -0.30 / -0.85%
             |             
            
                35.60
             |           
            
                36.00
             |               
            
                35.00
             |                           
            
                35.00
             | 
            
                35.27
             |                     
            
                5.93
             |                                 
            
                44,290
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2018
             | 
            
                +1.15 / +3.37%
             |             
            
                33.70
             |           
            
                35.40
             |               
            
                33.70
             |                           
            
                35.30
             | 
            
                34.83
             |                     
            
                5.98
             |                                 
            
                181,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2018
             | 
            
                +0.15 / +0.44%
             |             
            
                34.00
             |           
            
                34.80
             |               
            
                33.70
             |                           
            
                34.15
             | 
            
                34.18
             |                     
            
                5.79
             |                                 
            
                88,070
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2018
             | 
            
                +1.00 / +3.03%
             |             
            
                33.00
             |           
            
                34.45
             |               
            
                33.00
             |                           
            
                34.00
             | 
            
                33.84
             |                     
            
                5.76
             |                                 
            
                83,630
             |  
            
                 
             |                                                              
             
    
         
    
    
 |