| 
                 
                    Closing price on 8/27/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.90 | 
                 
                
                    | High | 
                    4.90 | 
                 
                
                    | Low | 
                    4.70 | 
                     
                
                    | Volume | 
                    231,900 | 
                                 
                
                    | Split-adjusted Price | 
                    1.64 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VTO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/27/2012
             | 
            
                -0.20 / -4.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                1.64
             |                                 
            
                231,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2012
             | 
            
                +0.20 / +4.26%
             |             
            
                4.50
             |           
            
                4.90
             |               
            
                4.50
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                203,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2012
             | 
            
                -0.20 / -4.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                1.64
             |                                 
            
                170,230
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2012
             | 
            
                -0.20 / -3.92%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                122,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2012
             | 
            
                -0.20 / -3.77%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                185,140
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2012
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                121,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2012
             | 
            
                -0.10 / -1.92%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                174,460
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                84,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2012
             | 
            
                -0.10 / -1.89%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                48,450
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2012
             | 
            
                +0.10 / +1.92%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                61,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2012
             | 
            
                -0.10 / -1.89%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                70,710
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2012
             | 
            
                -0.10 / -1.85%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                92,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2012
             | 
            
                +0.20 / +3.85%
             |             
            
                5.10
             |           
            
                5.40
             |               
            
                5.10
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                1.88
             |                                 
            
                157,450
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                18,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2012
             | 
            
                -0.10 / -1.89%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                29,690
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2012
             | 
            
                +0.10 / +1.92%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                100,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                37,630
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2012
             | 
            
                +0.10 / +1.96%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                125,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                32,060
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2012
             | 
            
                -0.10 / -1.92%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                80,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2012
             | 
            
                +0.10 / +1.96%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                1.81
             |                                 
            
                44,710
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                121,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                84,570
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                21,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2012
             | 
            
                -0.20 / -3.77%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                1.78
             |                                 
            
                77,080
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2012
             | 
            
                -0.10 / -1.85%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                1.85
             |                                 
            
                104,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |