| 
                 
                    Closing price on 6/24/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    50.00 | 
                 
                
                    | High | 
                    50.50 | 
                 
                
                    | Low | 
                    50.00 | 
                     
                
                    | Volume | 
                    236,660 | 
                                 
                
                    | Split-adjusted Price | 
                    9.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/24/2015
             | 
            
                0.00 / 0.00%
             |             
            
                50.00
             |           
            
                50.50
             |               
            
                50.00
             |                           
            
                50.50
             | 
            
                50.25
             |                     
            
                9.20
             |                                 
            
                236,660
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2015
             | 
            
                +0.60 / +1.20%
             |             
            
                50.50
             |           
            
                50.50
             |               
            
                50.50
             |                           
            
                50.50
             | 
            
                50.50
             |                     
            
                9.20
             |                                 
            
                510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2015
             | 
            
                -1.10 / -2.16%
             |             
            
                50.50
             |           
            
                50.50
             |               
            
                49.00
             |                           
            
                49.90
             | 
            
                49.53
             |                     
            
                9.09
             |                                 
            
                10,660
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2015
             | 
            
                +0.50 / +0.99%
             |             
            
                50.50
             |           
            
                51.00
             |               
            
                50.50
             |                           
            
                51.00
             | 
            
                50.75
             |                     
            
                9.29
             |                                 
            
                820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2015
             | 
            
                0.00 / 0.00%
             |             
            
                50.50
             |           
            
                50.50
             |               
            
                50.00
             |                           
            
                50.50
             | 
            
                50.38
             |                     
            
                9.20
             |                                 
            
                930
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2015
             | 
            
                -0.50 / -0.98%
             |             
            
                50.50
             |           
            
                50.50
             |               
            
                50.00
             |                           
            
                50.50
             | 
            
                50.19
             |                     
            
                9.20
             |                                 
            
                10,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2015
             | 
            
                +0.50 / +0.99%
             |             
            
                50.50
             |           
            
                51.00
             |               
            
                50.00
             |                           
            
                51.00
             | 
            
                50.54
             |                     
            
                9.29
             |                                 
            
                12,050
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2015
             | 
            
                +0.80 / +1.61%
             |             
            
                50.00
             |           
            
                50.50
             |               
            
                50.00
             |                           
            
                50.50
             | 
            
                50.00
             |                     
            
                9.20
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2015
             | 
            
                +0.20 / +0.40%
             |             
            
                49.60
             |           
            
                50.00
             |               
            
                49.00
             |                           
            
                49.70
             | 
            
                49.62
             |                     
            
                9.05
             |                                 
            
                12,280
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2015
             | 
            
                0.00 / 0.00%
             |             
            
                49.50
             |           
            
                49.50
             |               
            
                48.70
             |                           
            
                49.50
             | 
            
                49.24
             |                     
            
                9.02
             |                                 
            
                13,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2015
             | 
            
                -0.10 / -0.20%
             |             
            
                49.50
             |           
            
                49.50
             |               
            
                49.00
             |                           
            
                49.50
             | 
            
                49.24
             |                     
            
                9.02
             |                                 
            
                1,970
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2015
             | 
            
                +0.20 / +0.40%
             |             
            
                49.90
             |           
            
                49.90
             |               
            
                49.00
             |                           
            
                49.60
             | 
            
                49.57
             |                     
            
                9.03
             |                                 
            
                12,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2015
             | 
            
                -0.20 / -0.40%
             |             
            
                49.50
             |           
            
                49.50
             |               
            
                48.70
             |                           
            
                49.40
             | 
            
                49.08
             |                     
            
                9.00
             |                                 
            
                43,620
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2015
             | 
            
                -0.10 / -0.20%
             |             
            
                49.50
             |           
            
                49.60
             |               
            
                48.30
             |                           
            
                49.60
             | 
            
                49.15
             |                     
            
                9.03
             |                                 
            
                3,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2015
             | 
            
                0.00 / 0.00%
             |             
            
                49.70
             |           
            
                49.70
             |               
            
                49.70
             |                           
            
                49.70
             | 
            
                49.70
             |                     
            
                9.05
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2015
             | 
            
                0.00 / 0.00%
             |             
            
                49.70
             |           
            
                49.80
             |               
            
                49.70
             |                           
            
                49.70
             | 
            
                49.74
             |                     
            
                9.05
             |                                 
            
                26,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2015
             | 
            
                -0.30 / -0.60%
             |             
            
                49.90
             |           
            
                50.00
             |               
            
                49.00
             |                           
            
                49.70
             | 
            
                49.48
             |                     
            
                9.05
             |                                 
            
                29,990
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2015
             | 
            
                -0.50 / -0.99%
             |             
            
                49.90
             |           
            
                50.00
             |               
            
                49.90
             |                           
            
                50.00
             | 
            
                49.95
             |                     
            
                9.11
             |                                 
            
                370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2015
             | 
            
                0.00 / 0.00%
             |             
            
                50.50
             |           
            
                50.50
             |               
            
                49.00
             |                           
            
                50.50
             | 
            
                49.59
             |                     
            
                9.20
             |                                 
            
                8,570
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2015
             | 
            
                0.00 / 0.00%
             |             
            
                50.00
             |           
            
                50.50
             |               
            
                48.50
             |                           
            
                50.50
             | 
            
                49.96
             |                     
            
                9.20
             |                                 
            
                14,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2015
             | 
            
                -10.00 / -16.53%
             |             
            
                51.00
             |           
            
                51.50
             |               
            
                50.50
             |                           
            
                50.50
             | 
            
                50.67
             |                     
            
                9.20
             |                                 
            
                13,890
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2015
             | 
            
                0.00 / 0.00%
             |             
            
                60.50
             |           
            
                61.00
             |               
            
                60.50
             |                           
            
                60.50
             | 
            
                60.67
             |                     
            
                9.18
             |                                 
            
                56,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2015
             | 
            
                +1.00 / +1.68%
             |             
            
                59.00
             |           
            
                61.00
             |               
            
                59.00
             |                           
            
                60.50
             | 
            
                59.90
             |                     
            
                9.18
             |                                 
            
                63,670
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2015
             | 
            
                -0.50 / -0.83%
             |             
            
                60.00
             |           
            
                60.00
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                59.51
             |                     
            
                9.03
             |                                 
            
                25,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2015
             | 
            
                +2.00 / +3.45%
             |             
            
                58.00
             |           
            
                60.00
             |               
            
                58.00
             |                           
            
                60.00
             | 
            
                58.42
             |                     
            
                9.11
             |                                 
            
                57,460
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2015
             | 
            
                +1.50 / +2.65%
             |             
            
                57.00
             |           
            
                59.00
             |               
            
                57.00
             |                           
            
                58.00
             | 
            
                58.67
             |                     
            
                8.80
             |                                 
            
                14,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2015
             | 
            
                0.00 / 0.00%
             |             
            
                57.00
             |           
            
                57.50
             |               
            
                56.50
             |                           
            
                56.50
             | 
            
                56.65
             |                     
            
                8.58
             |                                 
            
                8,050
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2015
             | 
            
                -1.50 / -2.59%
             |             
            
                58.50
             |           
            
                58.50
             |               
            
                56.50
             |                           
            
                56.50
             | 
            
                56.81
             |                     
            
                8.58
             |                                 
            
                13,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2015
             | 
            
                -1.00 / -1.69%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                58.00
             |                     
            
                8.80
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2015
             | 
            
                +0.50 / +0.85%
             |             
            
                59.00
             |           
            
                59.00
             |               
            
                58.50
             |                           
            
                59.00
             | 
            
                58.88
             |                     
            
                8.96
             |                                 
            
                5,270
             |  
            
                 
             |                                                              
             
    
         
    
    
 |