| 
                 
                    Closing price on 8/10/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.10 | 
                 
                
                    | High | 
                    6.10 | 
                 
                
                    | Low | 
                    5.90 | 
                     
                
                    | Volume | 
                    217,600 | 
                                 
                
                    | Split-adjusted Price | 
                    3.06 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VKC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/10/2012
             | 
            
                -0.20 / -3.28%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.99
             |                     
            
                3.06
             |                                 
            
                217,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2012
             | 
            
                +0.10 / +1.67%
             |             
            
                6.00
             |           
            
                6.20
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.13
             |                     
            
                3.16
             |                                 
            
                154,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                6.00
             | 
            
                5.94
             |                     
            
                3.11
             |                                 
            
                250,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2012
             | 
            
                +0.20 / +3.45%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.70
             |                           
            
                6.00
             | 
            
                5.81
             |                     
            
                3.11
             |                                 
            
                182,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2012
             | 
            
                +0.30 / +5.45%
             |             
            
                5.60
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.80
             | 
            
                5.76
             |                     
            
                3.01
             |                                 
            
                357,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2012
             | 
            
                -0.10 / -1.79%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.52
             |                     
            
                2.85
             |                                 
            
                79,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2012
             | 
            
                -0.10 / -1.75%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.58
             |                     
            
                2.91
             |                                 
            
                49,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.70
             | 
            
                5.51
             |                     
            
                2.96
             |                                 
            
                81,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2012
             | 
            
                +0.10 / +1.79%
             |             
            
                5.70
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.69
             |                     
            
                2.96
             |                                 
            
                92,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.56
             |                     
            
                2.91
             |                                 
            
                74,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.56
             |                     
            
                2.91
             |                                 
            
                230,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2012
             | 
            
                -0.10 / -1.75%
             |             
            
                5.70
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.67
             |                     
            
                2.91
             |                                 
            
                239,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2012
             | 
            
                +0.10 / +1.79%
             |             
            
                5.50
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.70
             | 
            
                5.58
             |                     
            
                2.96
             |                                 
            
                521,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2012
             | 
            
                -0.50 / -8.20%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.74
             |                     
            
                2.91
             |                                 
            
                314,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2012
             | 
            
                -0.10 / -1.61%
             |             
            
                6.20
             |           
            
                6.30
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                3.16
             |                                 
            
                215,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2012
             | 
            
                +0.30 / +5.08%
             |             
            
                6.10
             |           
            
                6.30
             |               
            
                6.00
             |                           
            
                6.20
             | 
            
                6.18
             |                     
            
                3.22
             |                                 
            
                519,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2012
             | 
            
                +0.20 / +3.51%
             |             
            
                5.50
             |           
            
                5.90
             |               
            
                5.50
             |                           
            
                5.90
             | 
            
                5.77
             |                     
            
                3.06
             |                                 
            
                724,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2012
             | 
            
                +0.10 / +1.79%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.40
             |                           
            
                5.70
             | 
            
                5.62
             |                     
            
                2.96
             |                                 
            
                117,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2012
             | 
            
                +0.40 / +7.69%
             |             
            
                5.20
             |           
            
                5.60
             |               
            
                5.10
             |                           
            
                5.60
             | 
            
                5.47
             |                     
            
                2.91
             |                                 
            
                236,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2012
             | 
            
                -0.10 / -1.89%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.26
             |                     
            
                2.70
             |                                 
            
                262,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/13/2012
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.26
             |                     
            
                2.75
             |                                 
            
                226,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/12/2012
             | 
            
                +0.20 / +4.08%
             |             
            
                4.90
             |           
            
                5.10
             |               
            
                4.80
             |                           
            
                5.10
             | 
            
                4.99
             |                     
            
                2.65
             |                                 
            
                134,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/11/2012
             | 
            
                +0.30 / +6.52%
             |             
            
                4.60
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.90
             | 
            
                4.75
             |                     
            
                2.54
             |                                 
            
                70,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/10/2012
             | 
            
                -0.10 / -2.13%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.68
             |                     
            
                2.39
             |                                 
            
                67,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2012
             | 
            
                -0.40 / -7.84%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.79
             |                     
            
                2.44
             |                                 
            
                100,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2012
             | 
            
                +0.10 / +2.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                2.65
             |                                 
            
                163,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2012
             | 
            
                +0.40 / +8.70%
             |             
            
                4.60
             |           
            
                5.00
             |               
            
                4.50
             |                           
            
                5.00
             | 
            
                4.75
             |                     
            
                2.59
             |                                 
            
                86,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2012
             | 
            
                -0.40 / -8.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.74
             |                     
            
                2.39
             |                                 
            
                72,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2012
             | 
            
                +0.10 / +2.04%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.70
             |                           
            
                5.00
             | 
            
                4.82
             |                     
            
                2.59
             |                                 
            
                152,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/2/2012
             | 
            
                -0.20 / -3.92%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                5.01
             |                     
            
                2.54
             |                                 
            
                84,100
             |  
            
                 
             |                                                              
             
    
         
    
    
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