| 
                 
                    Closing price on 8/30/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.80 | 
                 
                
                    | High | 
                    6.90 | 
                 
                
                    | Low | 
                    6.60 | 
                     
                
                    | Volume | 
                    2,438,850 | 
                                 
                
                    | Split-adjusted Price | 
                    6.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVX Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.80
             |           
            
                6.90
             |               
            
                6.60
             |                           
            
                6.70
             | 
            
                6.74
             |                     
            
                6.70
             |                                 
            
                2,438,850
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2012
             | 
            
                +0.30 / +4.69%
             |             
            
                6.10
             |           
            
                6.70
             |               
            
                6.10
             |                           
            
                6.70
             | 
            
                6.62
             |                     
            
                6.70
             |                                 
            
                3,894,345
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2012
             | 
            
                -0.20 / -3.03%
             |             
            
                6.20
             |           
            
                6.60
             |               
            
                6.20
             |                           
            
                6.40
             | 
            
                6.30
             |                     
            
                6.40
             |                                 
            
                3,436,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2012
             | 
            
                -0.30 / -4.35%
             |             
            
                6.80
             |           
            
                7.10
             |               
            
                6.60
             |                           
            
                6.60
             | 
            
                6.64
             |                     
            
                6.60
             |                                 
            
                3,303,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.50
             |           
            
                7.30
             |               
            
                6.50
             |                           
            
                6.90
             | 
            
                6.79
             |                     
            
                6.90
             |                                 
            
                9,259,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2012
             | 
            
                -0.50 / -6.76%
             |             
            
                7.10
             |           
            
                7.20
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                6.93
             |                     
            
                6.90
             |                                 
            
                1,490,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2012
             | 
            
                -0.50 / -6.33%
             |             
            
                7.50
             |           
            
                7.70
             |               
            
                7.40
             |                           
            
                7.40
             | 
            
                7.45
             |                     
            
                7.40
             |                                 
            
                5,869,727
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2012
             | 
            
                -0.50 / -5.95%
             |             
            
                8.40
             |           
            
                8.50
             |               
            
                7.90
             |                           
            
                7.90
             | 
            
                8.00
             |                     
            
                7.90
             |                                 
            
                3,929,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2012
             | 
            
                +0.10 / +1.20%
             |             
            
                8.30
             |           
            
                8.50
             |               
            
                8.30
             |                           
            
                8.40
             | 
            
                8.38
             |                     
            
                8.40
             |                                 
            
                1,545,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2012
             | 
            
                -0.10 / -1.19%
             |             
            
                8.30
             |           
            
                8.50
             |               
            
                8.20
             |                           
            
                8.30
             | 
            
                8.32
             |                     
            
                8.30
             |                                 
            
                1,632,101
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                8.40
             |                                 
            
                2,600,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2012
             | 
            
                -0.10 / -1.18%
             |             
            
                8.50
             |           
            
                8.60
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.49
             |                     
            
                8.40
             |                                 
            
                2,178,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2012
             | 
            
                +0.10 / +1.19%
             |             
            
                8.50
             |           
            
                8.60
             |               
            
                8.30
             |                           
            
                8.50
             | 
            
                8.50
             |                     
            
                8.50
             |                                 
            
                1,330,665
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2012
             | 
            
                -0.10 / -1.18%
             |             
            
                8.50
             |           
            
                8.60
             |               
            
                8.30
             |                           
            
                8.40
             | 
            
                8.42
             |                     
            
                8.40
             |                                 
            
                1,782,246
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2012
             | 
            
                -0.20 / -2.30%
             |             
            
                8.70
             |           
            
                8.70
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.50
             |                     
            
                8.50
             |                                 
            
                3,364,623
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2012
             | 
            
                +0.10 / +1.16%
             |             
            
                8.60
             |           
            
                9.00
             |               
            
                8.60
             |                           
            
                8.70
             | 
            
                8.78
             |                     
            
                8.70
             |                                 
            
                3,916,165
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2012
             | 
            
                +0.10 / +1.18%
             |             
            
                8.50
             |           
            
                8.70
             |               
            
                8.40
             |                           
            
                8.60
             | 
            
                8.56
             |                     
            
                8.60
             |                                 
            
                1,954,847
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2012
             | 
            
                -0.30 / -3.41%
             |             
            
                8.70
             |           
            
                8.70
             |               
            
                8.50
             |                           
            
                8.50
             | 
            
                8.58
             |                     
            
                8.50
             |                                 
            
                1,921,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2012
             | 
            
                +0.50 / +6.02%
             |             
            
                8.40
             |           
            
                8.80
             |               
            
                8.40
             |                           
            
                8.80
             | 
            
                8.61
             |                     
            
                8.80
             |                                 
            
                3,424,570
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.30
             |           
            
                8.40
             |               
            
                8.20
             |                           
            
                8.30
             | 
            
                8.32
             |                     
            
                8.30
             |                                 
            
                1,135,385
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.30
             |           
            
                8.50
             |               
            
                8.20
             |                           
            
                8.30
             | 
            
                8.34
             |                     
            
                8.30
             |                                 
            
                1,552,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2012
             | 
            
                -0.10 / -1.19%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                8.10
             |                           
            
                8.30
             | 
            
                8.24
             |                     
            
                8.30
             |                                 
            
                1,772,445
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.90
             |           
            
                8.50
             |               
            
                7.90
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                8.40
             |                                 
            
                1,646,229
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.40
             |           
            
                8.50
             |               
            
                8.20
             |                           
            
                8.40
             | 
            
                8.35
             |                     
            
                8.40
             |                                 
            
                2,180,726
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2012
             | 
            
                -0.20 / -2.33%
             |             
            
                8.70
             |           
            
                8.80
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.53
             |                     
            
                8.40
             |                                 
            
                3,426,725
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.70
             |               
            
                8.50
             |                           
            
                8.60
             | 
            
                8.57
             |                     
            
                8.60
             |                                 
            
                3,270,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2012
             | 
            
                -0.30 / -3.37%
             |             
            
                8.70
             |           
            
                8.80
             |               
            
                8.40
             |                           
            
                8.60
             | 
            
                8.55
             |                     
            
                8.60
             |                                 
            
                6,465,050
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2012
             | 
            
                -0.60 / -6.32%
             |             
            
                9.00
             |           
            
                9.40
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.98
             |                     
            
                8.90
             |                                 
            
                9,339,209
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2012
             | 
            
                -0.10 / -1.04%
             |             
            
                9.50
             |           
            
                9.70
             |               
            
                9.40
             |                           
            
                9.50
             | 
            
                9.55
             |                     
            
                9.50
             |                                 
            
                2,886,264
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2012
             | 
            
                -0.20 / -2.04%
             |             
            
                10.00
             |           
            
                10.10
             |               
            
                9.50
             |                           
            
                9.60
             | 
            
                9.84
             |                     
            
                9.60
             |                                 
            
                5,126,175
             |  
            
                 
             |                                                              
             
    
         
    
    
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