| 
                 
                    Closing price on 7/20/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.50 | 
                 
                
                    | High | 
                    5.60 | 
                 
                
                    | Low | 
                    5.30 | 
                     
                
                    | Volume | 
                    243,520 | 
                                 
                
                    | Split-adjusted Price | 
                    1.88 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VTO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/20/2012
             | 
            
                -0.10 / -1.82%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                1.88
             |                                 
            
                243,520
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2012
             | 
            
                +0.10 / +1.85%
             |             
            
                5.30
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                1.92
             |                                 
            
                202,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2012
             | 
            
                +0.10 / +1.89%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                1.88
             |                                 
            
                76,740
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2012
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                170,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2012
             | 
            
                -0.20 / -3.77%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                163,060
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2012
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.00
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                235,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                60,880
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2012
             | 
            
                +0.10 / +2.00%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                35,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2012
             | 
            
                +0.20 / +4.17%
             |             
            
                4.80
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                1.75
             |                                 
            
                136,770
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2012
             | 
            
                -0.10 / -2.04%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                52,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2012
             | 
            
                +0.10 / +2.08%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                151,750
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                98,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2012
             | 
            
                -0.10 / -2.04%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                52,510
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2012
             | 
            
                -0.20 / -3.92%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                201,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2012
             | 
            
                -0.20 / -3.77%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                168,180
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2012
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.00
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                32,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                55,220
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                344,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2012
             | 
            
                -0.20 / -3.77%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                277,150
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2012
             | 
            
                -0.20 / -3.64%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                90,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2012
             | 
            
                -0.10 / -1.79%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                1.92
             |                                 
            
                76,010
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2012
             | 
            
                -0.10 / -1.75%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                1.95
             |                                 
            
                68,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2012
             | 
            
                +0.20 / +3.64%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                1.99
             |                                 
            
                97,190
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2012
             | 
            
                -0.20 / -3.51%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                1.92
             |                                 
            
                258,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.70
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                1.99
             |                                 
            
                83,940
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2012
             | 
            
                +0.20 / +3.64%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                1.99
             |                                 
            
                92,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2012
             | 
            
                -0.10 / -1.79%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                1.92
             |                                 
            
                67,540
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                1.95
             |                                 
            
                90,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2012
             | 
            
                -0.10 / -1.75%
             |             
            
                5.60
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                1.95
             |                                 
            
                287,470
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2012
             | 
            
                -0.10 / -1.72%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                1.99
             |                                 
            
                159,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |