| 
                 
                    Closing price on 7/22/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    136.00 | 
                 
                
                    | High | 
                    136.00 | 
                 
                
                    | Low | 
                    127.00 | 
                     
                
                    | Volume | 
                    265,900 | 
                                 
                
                    | Split-adjusted Price | 
                    27.12 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/22/2016
             | 
            
                -9.00 / -6.62%
             |             
            
                136.00
             |           
            
                136.00
             |               
            
                127.00
             |                           
            
                127.00
             | 
            
                128.22
             |                     
            
                27.12
             |                                 
            
                265,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2016
             | 
            
                +4.00 / +3.03%
             |             
            
                134.00
             |           
            
                137.00
             |               
            
                133.00
             |                           
            
                136.00
             | 
            
                135.61
             |                     
            
                29.04
             |                                 
            
                58,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2016
             | 
            
                -1.00 / -0.75%
             |             
            
                132.00
             |           
            
                133.00
             |               
            
                129.00
             |                           
            
                132.00
             | 
            
                131.03
             |                     
            
                28.18
             |                                 
            
                64,560
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2016
             | 
            
                +3.00 / +2.31%
             |             
            
                130.00
             |           
            
                134.00
             |               
            
                127.00
             |                           
            
                133.00
             | 
            
                129.99
             |                     
            
                28.40
             |                                 
            
                101,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2016
             | 
            
                0.00 / 0.00%
             |             
            
                127.00
             |           
            
                130.00
             |               
            
                127.00
             |                           
            
                130.00
             | 
            
                128.35
             |                     
            
                27.76
             |                                 
            
                45,430
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2016
             | 
            
                -5.00 / -3.70%
             |             
            
                134.00
             |           
            
                135.00
             |               
            
                128.00
             |                           
            
                130.00
             | 
            
                130.08
             |                     
            
                27.76
             |                                 
            
                112,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2016
             | 
            
                -2.00 / -1.46%
             |             
            
                137.00
             |           
            
                137.00
             |               
            
                135.00
             |                           
            
                135.00
             | 
            
                135.95
             |                     
            
                28.82
             |                                 
            
                64,920
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2016
             | 
            
                0.00 / 0.00%
             |             
            
                139.00
             |           
            
                139.00
             |               
            
                137.00
             |                           
            
                137.00
             | 
            
                137.44
             |                     
            
                29.25
             |                                 
            
                30,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2016
             | 
            
                0.00 / 0.00%
             |             
            
                137.00
             |           
            
                139.00
             |               
            
                136.00
             |                           
            
                137.00
             | 
            
                136.89
             |                     
            
                29.25
             |                                 
            
                57,230
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2016
             | 
            
                -1.00 / -0.72%
             |             
            
                138.00
             |           
            
                140.00
             |               
            
                134.00
             |                           
            
                137.00
             | 
            
                137.36
             |                     
            
                29.25
             |                                 
            
                96,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2016
             | 
            
                -2.00 / -1.43%
             |             
            
                140.00
             |           
            
                141.00
             |               
            
                138.00
             |                           
            
                138.00
             | 
            
                139.68
             |                     
            
                29.46
             |                                 
            
                41,460
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2016
             | 
            
                +2.00 / +1.45%
             |             
            
                138.00
             |           
            
                141.00
             |               
            
                137.00
             |                           
            
                140.00
             | 
            
                140.12
             |                     
            
                29.89
             |                                 
            
                37,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2016
             | 
            
                +2.00 / +1.47%
             |             
            
                135.00
             |           
            
                139.00
             |               
            
                134.00
             |                           
            
                138.00
             | 
            
                137.06
             |                     
            
                29.46
             |                                 
            
                54,690
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2016
             | 
            
                0.00 / 0.00%
             |             
            
                141.00
             |           
            
                141.00
             |               
            
                136.00
             |                           
            
                136.00
             | 
            
                137.35
             |                     
            
                29.04
             |                                 
            
                42,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2016
             | 
            
                +4.00 / +3.03%
             |             
            
                132.00
             |           
            
                136.00
             |               
            
                132.00
             |                           
            
                136.00
             | 
            
                134.58
             |                     
            
                29.04
             |                                 
            
                79,190
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2016
             | 
            
                +1.00 / +0.76%
             |             
            
                130.00
             |           
            
                132.00
             |               
            
                130.00
             |                           
            
                132.00
             | 
            
                131.32
             |                     
            
                28.18
             |                                 
            
                79,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2016
             | 
            
                +1.00 / +0.77%
             |             
            
                130.00
             |           
            
                133.00
             |               
            
                130.00
             |                           
            
                131.00
             | 
            
                130.93
             |                     
            
                27.97
             |                                 
            
                90,970
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2016
             | 
            
                +3.00 / +2.36%
             |             
            
                127.00
             |           
            
                130.00
             |               
            
                127.00
             |                           
            
                130.00
             | 
            
                128.80
             |                     
            
                27.76
             |                                 
            
                241,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2016
             | 
            
                -2.00 / -1.55%
             |             
            
                129.00
             |           
            
                129.00
             |               
            
                126.00
             |                           
            
                127.00
             | 
            
                127.48
             |                     
            
                27.12
             |                                 
            
                40,470
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2016
             | 
            
                +3.00 / +2.38%
             |             
            
                126.00
             |           
            
                130.00
             |               
            
                123.00
             |                           
            
                129.00
             | 
            
                127.13
             |                     
            
                27.54
             |                                 
            
                64,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2016
             | 
            
                -3.00 / -2.33%
             |             
            
                128.00
             |           
            
                130.00
             |               
            
                120.00
             |                           
            
                126.00
             | 
            
                124.57
             |                     
            
                26.90
             |                                 
            
                217,940
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2016
             | 
            
                -1.00 / -0.77%
             |             
            
                131.00
             |           
            
                131.00
             |               
            
                129.00
             |                           
            
                129.00
             | 
            
                129.49
             |                     
            
                27.54
             |                                 
            
                29,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2016
             | 
            
                +3.00 / +2.36%
             |             
            
                129.00
             |           
            
                131.00
             |               
            
                129.00
             |                           
            
                130.00
             | 
            
                129.95
             |                     
            
                27.76
             |                                 
            
                56,590
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2016
             | 
            
                -3.00 / -2.31%
             |             
            
                129.00
             |           
            
                133.00
             |               
            
                121.00
             |                           
            
                127.00
             | 
            
                126.97
             |                     
            
                27.12
             |                                 
            
                114,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2016
             | 
            
                +6.00 / +4.84%
             |             
            
                125.00
             |           
            
                131.00
             |               
            
                125.00
             |                           
            
                130.00
             | 
            
                129.06
             |                     
            
                27.76
             |                                 
            
                87,220
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2016
             | 
            
                -1.00 / -0.80%
             |             
            
                125.00
             |           
            
                125.00
             |               
            
                122.00
             |                           
            
                124.00
             | 
            
                123.53
             |                     
            
                26.47
             |                                 
            
                26,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2016
             | 
            
                +7.00 / +5.93%
             |             
            
                118.00
             |           
            
                126.00
             |               
            
                118.00
             |                           
            
                125.00
             | 
            
                123.17
             |                     
            
                26.69
             |                                 
            
                204,310
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2016
             | 
            
                -2.00 / -1.67%
             |             
            
                120.00
             |           
            
                121.00
             |               
            
                117.00
             |                           
            
                118.00
             | 
            
                118.34
             |                     
            
                25.19
             |                                 
            
                87,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2016
             | 
            
                +5.00 / +4.35%
             |             
            
                115.00
             |           
            
                120.00
             |               
            
                114.00
             |                           
            
                120.00
             | 
            
                116.70
             |                     
            
                25.62
             |                                 
            
                96,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2016
             | 
            
                -2.00 / -1.71%
             |             
            
                117.00
             |           
            
                118.00
             |               
            
                115.00
             |                           
            
                115.00
             | 
            
                115.98
             |                     
            
                24.55
             |                                 
            
                68,140
             |  
            
                 
             |                                                              
             
    
         
    
    
 |