| 
                 
                    Closing price on 4/23/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.30 | 
                 
                
                    | High | 
                    4.50 | 
                 
                
                    | Low | 
                    4.30 | 
                     
                
                    | Volume | 
                    1,923,300 | 
                                 
                
                    | Split-adjusted Price | 
                    4.40 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVX Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/23/2013
             | 
            
                +0.10 / +2.33%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.41
             |                     
            
                4.40
             |                                 
            
                1,923,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.28
             |                     
            
                4.30
             |                                 
            
                1,816,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2013
             | 
            
                -0.10 / -2.27%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.36
             |                     
            
                4.30
             |                                 
            
                1,744,650
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2013
             | 
            
                -0.10 / -2.22%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.40
             |                           
            
                4.40
             | 
            
                4.48
             |                     
            
                4.40
             |                                 
            
                1,202,449
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2013
             | 
            
                +0.10 / +2.27%
             |             
            
                4.40
             |           
            
                4.60
             |               
            
                4.20
             |                           
            
                4.50
             | 
            
                4.39
             |                     
            
                4.50
             |                                 
            
                2,950,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2013
             | 
            
                -0.20 / -4.35%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.39
             |                     
            
                4.40
             |                                 
            
                3,737,137
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2013
             | 
            
                -0.10 / -2.13%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.62
             |                     
            
                4.60
             |                                 
            
                3,299,262
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.70
             | 
            
                4.72
             |                     
            
                4.70
             |                                 
            
                2,621,905
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2013
             | 
            
                -0.30 / -6.00%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.83
             |                     
            
                4.70
             |                                 
            
                4,377,075
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                5.00
             | 
            
                4.99
             |                     
            
                5.00
             |                                 
            
                4,065,593
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.10
             |                     
            
                5.00
             |                                 
            
                2,675,662
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2013
             | 
            
                -0.10 / -1.96%
             |             
            
                4.80
             |           
            
                5.10
             |               
            
                4.60
             |                           
            
                5.00
             | 
            
                4.96
             |                     
            
                5.00
             |                                 
            
                3,788,045
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2013
             | 
            
                -0.50 / -8.93%
             |             
            
                5.40
             |           
            
                5.60
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.14
             |                     
            
                5.10
             |                                 
            
                15,884,598
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.80
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                5.60
             |                                 
            
                3,589,957
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2013
             | 
            
                -0.10 / -1.75%
             |             
            
                5.70
             |           
            
                5.90
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.68
             |                     
            
                5.60
             |                                 
            
                3,351,950
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2013
             | 
            
                +0.40 / +7.55%
             |             
            
                4.80
             |           
            
                5.80
             |               
            
                4.80
             |                           
            
                5.70
             | 
            
                5.47
             |                     
            
                5.70
             |                                 
            
                4,244,269
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.00
             |                           
            
                5.30
             | 
            
                5.19
             |                     
            
                5.30
             |                                 
            
                4,276,125
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2013
             | 
            
                -0.20 / -3.64%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.35
             |                     
            
                5.30
             |                                 
            
                3,774,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2013
             | 
            
                -0.10 / -1.79%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.30
             |                           
            
                5.50
             | 
            
                5.47
             |                     
            
                5.50
             |                                 
            
                4,250,324
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2013
             | 
            
                -0.10 / -1.75%
             |             
            
                5.70
             |           
            
                5.80
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.65
             |                     
            
                5.60
             |                                 
            
                3,175,138
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2013
             | 
            
                +0.10 / +1.79%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.70
             | 
            
                5.64
             |                     
            
                5.70
             |                                 
            
                2,928,835
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2013
             | 
            
                -0.30 / -5.08%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.63
             |                     
            
                5.60
             |                                 
            
                6,447,879
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2013
             | 
            
                +0.10 / +1.72%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.70
             |                           
            
                5.90
             | 
            
                5.84
             |                     
            
                5.90
             |                                 
            
                2,525,736
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.70
             |                           
            
                5.80
             | 
            
                5.90
             |                     
            
                5.80
             |                                 
            
                3,651,237
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.60
             |                           
            
                5.80
             | 
            
                5.76
             |                     
            
                5.80
             |                                 
            
                3,259,850
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2013
             | 
            
                -0.30 / -4.92%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                5.70
             |                           
            
                5.80
             | 
            
                5.90
             |                     
            
                5.80
             |                                 
            
                4,965,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2013
             | 
            
                +0.20 / +3.39%
             |             
            
                5.80
             |           
            
                6.20
             |               
            
                5.70
             |                           
            
                6.10
             | 
            
                5.96
             |                     
            
                6.10
             |                                 
            
                7,249,751
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2013
             | 
            
                +0.20 / +3.51%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.60
             |                           
            
                5.90
             | 
            
                5.79
             |                     
            
                5.90
             |                                 
            
                6,340,574
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2013
             | 
            
                -0.50 / -8.06%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                5.70
             |                           
            
                5.70
             | 
            
                5.94
             |                     
            
                5.70
             |                                 
            
                7,590,195
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2013
             | 
            
                -0.10 / -1.59%
             |             
            
                6.90
             |           
            
                6.90
             |               
            
                5.90
             |                           
            
                6.20
             | 
            
                6.10
             |                     
            
                6.20
             |                                 
            
                8,601,910
             |  
            
                 
             |                                                              
             
    
         
    
    
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