| 
                 
                    Closing price on 1/10/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.50 | 
                 
                
                    | High | 
                    6.80 | 
                 
                
                    | Low | 
                    6.40 | 
                     
                
                    | Volume | 
                    3,907,497 | 
                                 
                
                    | Split-adjusted Price | 
                    6.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVX Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/10/2012
             | 
            
                +0.30 / +4.69%
             |             
            
                6.50
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.70
             | 
            
                6.72
             |                     
            
                6.70
             |                                 
            
                3,907,497
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2012
             | 
            
                -0.10 / -1.54%
             |             
            
                6.50
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.42
             |                     
            
                6.40
             |                                 
            
                1,369,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2012
             | 
            
                +0.10 / +1.56%
             |             
            
                6.50
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.47
             |                     
            
                6.50
             |                                 
            
                1,402,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2012
             | 
            
                -0.30 / -4.48%
             |             
            
                6.50
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.46
             |                     
            
                6.40
             |                                 
            
                1,114,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2012
             | 
            
                -0.10 / -1.47%
             |             
            
                6.90
             |           
            
                6.90
             |               
            
                6.60
             |                           
            
                6.70
             | 
            
                6.67
             |                     
            
                6.70
             |                                 
            
                1,010,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                7.00
             |               
            
                6.30
             |                           
            
                6.80
             | 
            
                6.86
             |                     
            
                6.80
             |                                 
            
                1,395,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2011
             | 
            
                +0.30 / +4.62%
             |             
            
                6.50
             |           
            
                6.90
             |               
            
                6.30
             |                           
            
                6.80
             | 
            
                6.66
             |                     
            
                6.80
             |                                 
            
                3,593,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2011
             | 
            
                -0.40 / -5.80%
             |             
            
                7.00
             |           
            
                7.00
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.53
             |                     
            
                6.50
             |                                 
            
                2,912,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2011
             | 
            
                +0.20 / +2.99%
             |             
            
                6.50
             |           
            
                7.10
             |               
            
                6.50
             |                           
            
                6.90
             | 
            
                6.86
             |                     
            
                6.90
             |                                 
            
                2,157,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2011
             | 
            
                -0.20 / -2.90%
             |             
            
                6.90
             |           
            
                7.10
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.76
             |                     
            
                6.70
             |                                 
            
                2,069,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2011
             | 
            
                -0.40 / -5.48%
             |             
            
                7.00
             |           
            
                7.40
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                7.07
             |                     
            
                6.90
             |                                 
            
                1,315,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2011
             | 
            
                -0.10 / -1.35%
             |             
            
                7.40
             |           
            
                7.50
             |               
            
                7.10
             |                           
            
                7.30
             | 
            
                7.29
             |                     
            
                7.30
             |                                 
            
                1,847,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2011
             | 
            
                -0.30 / -3.90%
             |             
            
                7.50
             |           
            
                7.80
             |               
            
                7.30
             |                           
            
                7.40
             | 
            
                7.42
             |                     
            
                7.40
             |                                 
            
                1,729,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2011
             | 
            
                +0.20 / +2.67%
             |             
            
                7.30
             |           
            
                7.90
             |               
            
                7.30
             |                           
            
                7.70
             | 
            
                7.69
             |                     
            
                7.70
             |                                 
            
                1,103,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2011
             | 
            
                -0.30 / -3.85%
             |             
            
                7.60
             |           
            
                7.90
             |               
            
                7.50
             |                           
            
                7.50
             | 
            
                7.60
             |                     
            
                7.50
             |                                 
            
                1,652,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2011
             | 
            
                -0.20 / -2.50%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                7.70
             |                           
            
                7.80
             | 
            
                7.89
             |                     
            
                7.80
             |                                 
            
                1,252,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2011
             | 
            
                +0.40 / +5.26%
             |             
            
                7.50
             |           
            
                8.00
             |               
            
                7.50
             |                           
            
                8.00
             | 
            
                7.90
             |                     
            
                8.00
             |                                 
            
                1,843,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2011
             | 
            
                -0.30 / -3.80%
             |             
            
                7.60
             |           
            
                7.80
             |               
            
                7.40
             |                           
            
                7.60
             | 
            
                7.54
             |                     
            
                7.60
             |                                 
            
                2,810,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2011
             | 
            
                -0.20 / -2.47%
             |             
            
                7.80
             |           
            
                8.10
             |               
            
                7.70
             |                           
            
                7.90
             | 
            
                7.86
             |                     
            
                7.90
             |                                 
            
                2,146,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2011
             | 
            
                -0.10 / -1.22%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.00
             |                           
            
                8.10
             | 
            
                8.12
             |                     
            
                8.10
             |                                 
            
                1,619,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2011
             | 
            
                -0.50 / -5.75%
             |             
            
                8.40
             |           
            
                8.50
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.32
             |                     
            
                8.20
             |                                 
            
                1,350,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/9/2011
             | 
            
                -0.20 / -2.25%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.50
             |                           
            
                8.70
             | 
            
                8.71
             |                     
            
                8.30
             |                                 
            
                2,002,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2011
             | 
            
                -0.10 / -1.11%
             |             
            
                9.10
             |           
            
                9.20
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                9.02
             |                     
            
                8.49
             |                                 
            
                1,534,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2011
             | 
            
                -0.20 / -2.17%
             |             
            
                9.20
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.19
             |                     
            
                8.59
             |                                 
            
                1,820,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2011
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.60
             |               
            
                9.20
             |                           
            
                9.20
             | 
            
                9.40
             |                     
            
                8.78
             |                                 
            
                3,797,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2011
             | 
            
                +0.50 / +5.75%
             |             
            
                8.60
             |           
            
                9.20
             |               
            
                8.60
             |                           
            
                9.20
             | 
            
                9.09
             |                     
            
                8.78
             |                                 
            
                3,070,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/2/2011
             | 
            
                +0.20 / +2.35%
             |             
            
                8.00
             |           
            
                8.70
             |               
            
                8.00
             |                           
            
                8.70
             | 
            
                8.56
             |                     
            
                8.30
             |                                 
            
                1,504,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2011
             | 
            
                +0.10 / +1.19%
             |             
            
                8.50
             |           
            
                8.80
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.55
             |                     
            
                8.11
             |                                 
            
                1,408,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2011
             | 
            
                -0.20 / -2.33%
             |             
            
                8.70
             |           
            
                8.70
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.49
             |                     
            
                8.01
             |                                 
            
                1,403,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2011
             | 
            
                -0.10 / -1.15%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.50
             |                           
            
                8.60
             | 
            
                8.67
             |                     
            
                8.20
             |                                 
            
                1,432,700
             |  
            
                 
             |                                                              
             
    
         
    
    
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