| 
                 
                    Closing price on 10/2/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.30 | 
                 
                
                    | High | 
                    9.40 | 
                 
                
                    | Low | 
                    9.10 | 
                     
                
                    | Volume | 
                    2,477,640 | 
                                 
                
                    | Split-adjusted Price | 
                    3.29 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/2/2013
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.40
             |               
            
                9.10
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                3.29
             |                                 
            
                2,477,640
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2013
             | 
            
                +0.20 / +2.22%
             |             
            
                9.30
             |           
            
                9.60
             |               
            
                9.00
             |                           
            
                9.20
             | 
            
                9.20
             |                     
            
                3.29
             |                                 
            
                4,483,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2013
             | 
            
                +0.50 / +5.88%
             |             
            
                8.50
             |           
            
                9.00
             |               
            
                8.40
             |                           
            
                9.00
             | 
            
                9.00
             |                     
            
                3.22
             |                                 
            
                3,222,490
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2013
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.80
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.50
             |                     
            
                3.04
             |                                 
            
                2,218,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2013
             | 
            
                +0.20 / +2.41%
             |             
            
                8.30
             |           
            
                8.60
             |               
            
                8.20
             |                           
            
                8.50
             | 
            
                8.50
             |                     
            
                3.04
             |                                 
            
                2,828,770
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2013
             | 
            
                -0.40 / -4.60%
             |             
            
                8.70
             |           
            
                9.00
             |               
            
                8.20
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                2.97
             |                                 
            
                3,804,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2013
             | 
            
                +0.50 / +6.10%
             |             
            
                8.20
             |           
            
                8.70
             |               
            
                8.20
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                3.11
             |                                 
            
                3,749,990
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2013
             | 
            
                +0.50 / +6.49%
             |             
            
                7.70
             |           
            
                8.20
             |               
            
                7.60
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                2.93
             |                                 
            
                3,727,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2013
             | 
            
                +0.20 / +2.67%
             |             
            
                7.60
             |           
            
                7.80
             |               
            
                7.60
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                2.75
             |                                 
            
                1,888,520
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2013
             | 
            
                +0.10 / +1.35%
             |             
            
                7.50
             |           
            
                7.70
             |               
            
                7.40
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.68
             |                                 
            
                2,502,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2013
             | 
            
                -0.20 / -2.63%
             |             
            
                7.60
             |           
            
                7.70
             |               
            
                7.30
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                2.64
             |                                 
            
                1,881,020
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2013
             | 
            
                +0.10 / +1.33%
             |             
            
                7.50
             |           
            
                7.70
             |               
            
                7.30
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                2.72
             |                                 
            
                2,546,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2013
             | 
            
                +0.30 / +4.17%
             |             
            
                7.30
             |           
            
                7.60
             |               
            
                7.30
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.68
             |                                 
            
                3,410,040
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2013
             | 
            
                +0.20 / +2.86%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                7.00
             |                           
            
                7.20
             | 
            
                7.20
             |                     
            
                2.57
             |                                 
            
                2,172,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2013
             | 
            
                +0.30 / +4.48%
             |             
            
                6.70
             |           
            
                7.00
             |               
            
                6.60
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                2.50
             |                                 
            
                1,836,300
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.80
             |           
            
                6.90
             |               
            
                6.60
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                2.39
             |                                 
            
                1,553,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2013
             | 
            
                +0.10 / +1.52%
             |             
            
                6.50
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                2.39
             |                                 
            
                1,843,530
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2013
             | 
            
                -0.40 / -5.71%
             |             
            
                6.80
             |           
            
                6.90
             |               
            
                6.60
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                2.36
             |                                 
            
                3,598,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2013
             | 
            
                +0.10 / +1.45%
             |             
            
                7.00
             |           
            
                7.30
             |               
            
                6.90
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                2.50
             |                                 
            
                2,326,870
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2013
             | 
            
                +0.40 / +6.15%
             |             
            
                6.60
             |           
            
                6.90
             |               
            
                6.50
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                2.47
             |                                 
            
                5,641,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                2.32
             |                                 
            
                1,755,360
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.60
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                2.32
             |                                 
            
                1,239,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2013
             | 
            
                +0.20 / +3.17%
             |             
            
                6.30
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                2.32
             |                                 
            
                1,324,630
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                2.25
             |                                 
            
                1,216,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2013
             | 
            
                -0.30 / -4.55%
             |             
            
                6.50
             |           
            
                6.60
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                2.25
             |                                 
            
                2,460,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2013
             | 
            
                -0.20 / -2.94%
             |             
            
                6.70
             |           
            
                6.80
             |               
            
                6.60
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                2.36
             |                                 
            
                945,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2013
             | 
            
                +0.20 / +3.03%
             |             
            
                6.60
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                2.43
             |                                 
            
                1,761,210
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2013
             | 
            
                +0.10 / +1.54%
             |             
            
                6.60
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.60
             | 
            
                6.60
             |                     
            
                2.36
             |                                 
            
                2,479,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2013
             | 
            
                -0.30 / -4.41%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                2.32
             |                                 
            
                2,369,770
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.80
             |               
            
                6.50
             |                           
            
                6.80
             | 
            
                6.80
             |                     
            
                2.43
             |                                 
            
                2,626,800
             |  
            
                 
             |                                                              
             
    
         
    
    
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