| 
                 
                    Closing price on 9/28/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.60 | 
                 
                
                    | High | 
                    4.70 | 
                 
                
                    | Low | 
                    4.50 | 
                     
                
                    | Volume | 
                    66,190 | 
                                 
                
                    | Split-adjusted Price | 
                    1.57 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VTO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/28/2012
             | 
            
                -0.20 / -4.26%
             |             
            
                4.60
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                66,190
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2012
             | 
            
                +0.20 / +4.44%
             |             
            
                4.40
             |           
            
                4.70
             |               
            
                4.40
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                1.64
             |                                 
            
                62,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                89,520
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2012
             | 
            
                +0.20 / +4.65%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                27,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2012
             | 
            
                -0.10 / -2.27%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                1.50
             |                                 
            
                15,230
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                1.54
             |                                 
            
                32,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2012
             | 
            
                -0.10 / -2.22%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                1.54
             |                                 
            
                55,530
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2012
             | 
            
                -0.10 / -2.17%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                49,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2012
             | 
            
                -0.20 / -4.17%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                1.61
             |                                 
            
                29,470
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                22,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2012
             | 
            
                +0.20 / +4.35%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                142,110
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2012
             | 
            
                +0.10 / +2.22%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                1.61
             |                                 
            
                25,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                31,470
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                63,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2012
             | 
            
                -0.20 / -4.26%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                1.57
             |                                 
            
                139,160
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2012
             | 
            
                -0.10 / -2.08%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                1.64
             |                                 
            
                165,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2012
             | 
            
                +0.10 / +2.13%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                84,070
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2012
             | 
            
                -0.10 / -2.08%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                1.64
             |                                 
            
                30,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2012
             | 
            
                -0.10 / -2.04%
             |             
            
                4.80
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                33,140
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2012
             | 
            
                +0.10 / +2.08%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                33,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2012
             | 
            
                -0.10 / -2.04%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                1.68
             |                                 
            
                38,580
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                52,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2012
             | 
            
                +0.20 / +4.26%
             |             
            
                4.60
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                1.71
             |                                 
            
                70,350
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |