| 
                 
                    Closing price on 6/23/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    131.00 | 
                 
                
                    | High | 
                    131.00 | 
                 
                
                    | Low | 
                    129.00 | 
                     
                
                    | Volume | 
                    29,370 | 
                                 
                
                    | Split-adjusted Price | 
                    27.54 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2016
             | 
            
                -2.00 / -1.68%
             |             
            
                119.00
             |           
            
                119.00
             |               
            
                117.00
             |                           
            
                117.00
             | 
            
                117.85
             |                     
            
                24.98
             |                                 
            
                12,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2016
             | 
            
                +2.00 / +1.71%
             |             
            
                117.00
             |           
            
                119.00
             |               
            
                116.00
             |                           
            
                119.00
             | 
            
                117.53
             |                     
            
                25.41
             |                                 
            
                15,120
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2016
             | 
            
                +1.00 / +0.86%
             |             
            
                116.00
             |           
            
                118.00
             |               
            
                116.00
             |                           
            
                117.00
             | 
            
                116.37
             |                     
            
                24.98
             |                                 
            
                15,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2016
             | 
            
                -2.00 / -1.69%
             |             
            
                117.00
             |           
            
                118.00
             |               
            
                115.00
             |                           
            
                116.00
             | 
            
                115.59
             |                     
            
                24.77
             |                                 
            
                59,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2016
             | 
            
                -1.00 / -0.84%
             |             
            
                119.00
             |           
            
                119.00
             |               
            
                117.00
             |                           
            
                118.00
             | 
            
                117.58
             |                     
            
                25.19
             |                                 
            
                13,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2016
             | 
            
                0.00 / 0.00%
             |             
            
                120.00
             |           
            
                122.00
             |               
            
                119.00
             |                           
            
                119.00
             | 
            
                120.54
             |                     
            
                25.41
             |                                 
            
                59,290
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2016
             | 
            
                +4.00 / +3.48%
             |             
            
                116.00
             |           
            
                119.00
             |               
            
                116.00
             |                           
            
                119.00
             | 
            
                117.76
             |                     
            
                25.41
             |                                 
            
                38,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2016
             | 
            
                0.00 / 0.00%
             |             
            
                114.00
             |           
            
                116.00
             |               
            
                114.00
             |                           
            
                115.00
             | 
            
                114.79
             |                     
            
                24.55
             |                                 
            
                25,960
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2016
             | 
            
                0.00 / 0.00%
             |             
            
                114.00
             |           
            
                115.00
             |               
            
                113.00
             |                           
            
                115.00
             | 
            
                114.59
             |                     
            
                24.55
             |                                 
            
                28,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2016
             | 
            
                0.00 / 0.00%
             |             
            
                113.00
             |           
            
                115.00
             |               
            
                113.00
             |                           
            
                115.00
             | 
            
                114.21
             |                     
            
                24.55
             |                                 
            
                11,610
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                114.00
             |           
            
                115.00
             |               
            
                112.00
             |                           
            
                115.00
             | 
            
                112.94
             |                     
            
                24.55
             |                                 
            
                14,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                114.00
             |           
            
                116.00
             |               
            
                114.00
             |                           
            
                115.00
             | 
            
                114.81
             |                     
            
                24.55
             |                                 
            
                28,080
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2016
             | 
            
                +2.00 / +1.77%
             |             
            
                113.00
             |           
            
                115.00
             |               
            
                112.00
             |                           
            
                115.00
             | 
            
                114.43
             |                     
            
                24.55
             |                                 
            
                25,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2016
             | 
            
                0.00 / 0.00%
             |             
            
                113.00
             |           
            
                114.00
             |               
            
                112.00
             |                           
            
                113.00
             | 
            
                112.85
             |                     
            
                24.13
             |                                 
            
                14,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2016
             | 
            
                0.00 / 0.00%
             |             
            
                113.00
             |           
            
                114.00
             |               
            
                113.00
             |                           
            
                113.00
             | 
            
                113.31
             |                     
            
                24.13
             |                                 
            
                12,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2016
             | 
            
                -2.00 / -1.74%
             |             
            
                114.00
             |           
            
                116.00
             |               
            
                113.00
             |                           
            
                113.00
             | 
            
                113.41
             |                     
            
                24.13
             |                                 
            
                16,030
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2016
             | 
            
                +3.00 / +2.68%
             |             
            
                111.00
             |           
            
                115.00
             |               
            
                111.00
             |                           
            
                115.00
             | 
            
                113.16
             |                     
            
                24.55
             |                                 
            
                79,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2016
             | 
            
                -5.00 / -4.27%
             |             
            
                117.00
             |           
            
                118.00
             |               
            
                112.00
             |                           
            
                112.00
             | 
            
                114.21
             |                     
            
                23.91
             |                                 
            
                96,290
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2016
             | 
            
                -2.00 / -1.68%
             |             
            
                118.00
             |           
            
                120.00
             |               
            
                117.00
             |                           
            
                117.00
             | 
            
                118.22
             |                     
            
                24.98
             |                                 
            
                61,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2016
             | 
            
                -1.00 / -0.83%
             |             
            
                118.00
             |           
            
                120.00
             |               
            
                117.00
             |                           
            
                119.00
             | 
            
                118.51
             |                     
            
                25.41
             |                                 
            
                56,250
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2016
             | 
            
                +1.00 / +0.84%
             |             
            
                119.00
             |           
            
                120.00
             |               
            
                117.00
             |                           
            
                120.00
             | 
            
                117.72
             |                     
            
                25.62
             |                                 
            
                49,940
             |  
            
                 
             |                                                              
             
    
         
    
    
 |