| 
                 
                    Closing price on 6/11/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.20 | 
                 
                
                    | High | 
                    11.00 | 
                 
                
                    | Low | 
                    10.20 | 
                     
                
                    | Volume | 
                    15,839,646 | 
                                 
                
                    | Split-adjusted Price | 
                    10.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVX Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/11/2012
             | 
            
                +0.50 / +4.85%
             |             
            
                10.20
             |           
            
                11.00
             |               
            
                10.20
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                10.80
             |                                 
            
                15,839,646
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.50
             |           
            
                11.00
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.60
             |                     
            
                10.30
             |                                 
            
                8,236,633
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2012
             | 
            
                +0.70 / +7.29%
             |             
            
                9.70
             |           
            
                10.30
             |               
            
                9.70
             |                           
            
                10.30
             | 
            
                10.22
             |                     
            
                10.30
             |                                 
            
                12,014,108
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2012
             | 
            
                -0.10 / -1.03%
             |             
            
                9.70
             |           
            
                9.90
             |               
            
                9.60
             |                           
            
                9.60
             | 
            
                9.72
             |                     
            
                9.60
             |                                 
            
                1,918,113
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2012
             | 
            
                +0.20 / +2.11%
             |             
            
                9.60
             |           
            
                9.80
             |               
            
                9.30
             |                           
            
                9.70
             | 
            
                9.59
             |                     
            
                9.70
             |                                 
            
                2,241,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2012
             | 
            
                -0.20 / -2.06%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.30
             |                           
            
                9.50
             | 
            
                9.45
             |                     
            
                9.50
             |                                 
            
                2,486,465
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                10.00
             |               
            
                9.60
             |                           
            
                9.70
             | 
            
                9.73
             |                     
            
                9.70
             |                                 
            
                2,436,559
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2012
             | 
            
                -0.30 / -3.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.60
             |                           
            
                9.70
             | 
            
                9.77
             |                     
            
                9.70
             |                                 
            
                3,059,339
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                9.90
             |                           
            
                10.00
             | 
            
                10.06
             |                     
            
                10.00
             |                                 
            
                1,806,885
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                10.00
             |           
            
                10.10
             |               
            
                9.70
             |                           
            
                10.00
             | 
            
                9.92
             |                     
            
                10.00
             |                                 
            
                2,584,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2012
             | 
            
                -0.10 / -0.99%
             |             
            
                10.40
             |           
            
                10.60
             |               
            
                9.90
             |                           
            
                10.00
             | 
            
                10.22
             |                     
            
                10.00
             |                                 
            
                3,561,221
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2012
             | 
            
                +0.40 / +4.12%
             |             
            
                9.80
             |           
            
                10.10
             |               
            
                9.70
             |                           
            
                10.10
             | 
            
                10.04
             |                     
            
                10.10
             |                                 
            
                4,638,232
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2012
             | 
            
                +0.20 / +2.11%
             |             
            
                9.60
             |           
            
                9.70
             |               
            
                9.10
             |                           
            
                9.70
             | 
            
                9.41
             |                     
            
                9.70
             |                                 
            
                4,307,501
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2012
             | 
            
                -0.40 / -4.04%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.40
             |                           
            
                9.50
             | 
            
                9.64
             |                     
            
                9.50
             |                                 
            
                3,267,307
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2012
             | 
            
                -0.20 / -1.98%
             |             
            
                10.10
             |           
            
                10.30
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                10.06
             |                     
            
                9.90
             |                                 
            
                3,293,605
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2012
             | 
            
                +0.60 / +6.32%
             |             
            
                9.60
             |           
            
                10.10
             |               
            
                9.50
             |                           
            
                10.10
             | 
            
                9.98
             |                     
            
                10.10
             |                                 
            
                3,487,311
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2012
             | 
            
                -0.60 / -5.94%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.40
             |                           
            
                9.50
             | 
            
                9.58
             |                     
            
                9.50
             |                                 
            
                5,445,539
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2012
             | 
            
                -0.40 / -3.81%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.00
             |                           
            
                10.10
             | 
            
                10.25
             |                     
            
                10.10
             |                                 
            
                1,816,335
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2012
             | 
            
                +0.30 / +2.94%
             |             
            
                10.10
             |           
            
                10.50
             |               
            
                10.00
             |                           
            
                10.50
             | 
            
                10.23
             |                     
            
                10.50
             |                                 
            
                4,062,202
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2012
             | 
            
                -0.30 / -2.86%
             |             
            
                10.40
             |           
            
                10.60
             |               
            
                10.00
             |                           
            
                10.20
             | 
            
                10.28
             |                     
            
                10.20
             |                                 
            
                5,475,836
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2012
             | 
            
                -0.70 / -6.25%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                10.40
             |                           
            
                10.50
             | 
            
                10.65
             |                     
            
                10.50
             |                                 
            
                8,070,084
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2012
             | 
            
                -0.10 / -0.88%
             |             
            
                11.20
             |           
            
                11.50
             |               
            
                11.10
             |                           
            
                11.20
             | 
            
                11.27
             |                     
            
                11.20
             |                                 
            
                4,566,883
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2012
             | 
            
                -0.10 / -0.88%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.20
             |                           
            
                11.30
             | 
            
                11.40
             |                     
            
                11.30
             |                                 
            
                5,217,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2012
             | 
            
                -0.10 / -0.87%
             |             
            
                11.50
             |           
            
                11.70
             |               
            
                11.30
             |                           
            
                11.40
             | 
            
                11.50
             |                     
            
                11.40
             |                                 
            
                4,644,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2012
             | 
            
                -0.50 / -4.17%
             |             
            
                12.00
             |           
            
                12.10
             |               
            
                11.40
             |                           
            
                11.50
             | 
            
                11.70
             |                     
            
                11.50
             |                                 
            
                5,614,316
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2012
             | 
            
                +0.60 / +5.26%
             |             
            
                11.50
             |           
            
                12.00
             |               
            
                11.50
             |                           
            
                12.00
             | 
            
                11.79
             |                     
            
                12.00
             |                                 
            
                7,466,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2012
             | 
            
                +0.20 / +1.79%
             |             
            
                11.20
             |           
            
                11.70
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                11.40
             |                                 
            
                5,095,070
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2012
             | 
            
                -0.20 / -1.75%
             |             
            
                11.20
             |           
            
                11.40
             |               
            
                10.80
             |                           
            
                11.20
             | 
            
                11.09
             |                     
            
                11.20
             |                                 
            
                5,718,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2012
             | 
            
                -0.20 / -1.72%
             |             
            
                11.60
             |           
            
                11.80
             |               
            
                11.20
             |                           
            
                11.40
             | 
            
                11.47
             |                     
            
                11.40
             |                                 
            
                5,587,010
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2012
             | 
            
                +0.10 / +0.87%
             |             
            
                11.70
             |           
            
                11.90
             |               
            
                11.40
             |                           
            
                11.60
             | 
            
                11.63
             |                     
            
                11.60
             |                                 
            
                4,293,840
             |  
            
                 
             |                                                              
             
    
         
    
    
 | 
					 
				  |