| 
                 
                    Closing price on 7/5/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    110.30 | 
                 
                
                    | High | 
                    112.00 | 
                 
                
                    | Low | 
                    110.30 | 
                     
                
                    | Volume | 
                    69,940 | 
                                 
                
                    | Split-adjusted Price | 
                    34.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/5/2017
             | 
            
                0.00 / 0.00%
             |             
            
                110.30
             |           
            
                112.00
             |               
            
                110.30
             |                           
            
                110.40
             | 
            
                110.59
             |                     
            
                34.20
             |                                 
            
                69,940
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2017
             | 
            
                +0.40 / +0.36%
             |             
            
                109.20
             |           
            
                110.90
             |               
            
                109.20
             |                           
            
                110.40
             | 
            
                109.93
             |                     
            
                34.20
             |                                 
            
                19,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2017
             | 
            
                -1.50 / -1.35%
             |             
            
                113.00
             |           
            
                113.00
             |               
            
                109.50
             |                           
            
                110.00
             | 
            
                110.29
             |                     
            
                34.07
             |                                 
            
                16,040
             |            
            
                 
             |                                       
         
    
        
            | 
                6/30/2017
             | 
            
                0.00 / 0.00%
             |             
            
                111.50
             |           
            
                112.00
             |               
            
                111.00
             |                           
            
                111.50
             | 
            
                111.67
             |                     
            
                34.54
             |                                 
            
                5,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2017
             | 
            
                +1.50 / +1.36%
             |             
            
                112.60
             |           
            
                112.60
             |               
            
                111.50
             |                           
            
                111.50
             | 
            
                112.09
             |                     
            
                34.54
             |                                 
            
                26,560
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2017
             | 
            
                +0.50 / +0.46%
             |             
            
                109.50
             |           
            
                111.00
             |               
            
                109.50
             |                           
            
                110.00
             | 
            
                109.90
             |                     
            
                34.07
             |                                 
            
                34,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2017
             | 
            
                -2.50 / -2.23%
             |             
            
                113.00
             |           
            
                113.00
             |               
            
                109.00
             |                           
            
                109.50
             | 
            
                110.04
             |                     
            
                33.92
             |                                 
            
                39,540
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2017
             | 
            
                -0.60 / -0.53%
             |             
            
                113.00
             |           
            
                113.90
             |               
            
                112.00
             |                           
            
                112.00
             | 
            
                112.83
             |                     
            
                34.69
             |                                 
            
                21,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/23/2017
             | 
            
                +1.10 / +0.99%
             |             
            
                111.50
             |           
            
                113.50
             |               
            
                111.50
             |                           
            
                112.60
             | 
            
                112.72
             |                     
            
                34.88
             |                                 
            
                35,060
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2017
             | 
            
                -2.00 / -1.76%
             |             
            
                114.00
             |           
            
                114.00
             |               
            
                111.50
             |                           
            
                111.50
             | 
            
                112.99
             |                     
            
                34.54
             |                                 
            
                22,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2017
             | 
            
                +0.50 / +0.44%
             |             
            
                114.00
             |           
            
                114.00
             |               
            
                113.00
             |                           
            
                113.50
             | 
            
                113.20
             |                     
            
                35.16
             |                                 
            
                45,320
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2017
             | 
            
                +0.50 / +0.44%
             |             
            
                114.80
             |           
            
                114.80
             |               
            
                112.50
             |                           
            
                113.00
             | 
            
                113.06
             |                     
            
                35.00
             |                                 
            
                26,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2017
             | 
            
                +3.50 / +3.21%
             |             
            
                112.80
             |           
            
                112.80
             |               
            
                109.60
             |                           
            
                112.50
             | 
            
                111.92
             |                     
            
                34.85
             |                                 
            
                45,730
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2017
             | 
            
                -1.50 / -1.36%
             |             
            
                109.00
             |           
            
                110.00
             |               
            
                108.10
             |                           
            
                109.00
             | 
            
                109.13
             |                     
            
                33.76
             |                                 
            
                42,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2017
             | 
            
                +2.00 / +1.84%
             |             
            
                108.30
             |           
            
                111.50
             |               
            
                108.30
             |                           
            
                110.50
             | 
            
                110.12
             |                     
            
                34.23
             |                                 
            
                24,410
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                110.50
             |           
            
                110.50
             |               
            
                108.00
             |                           
            
                108.50
             | 
            
                108.55
             |                     
            
                33.61
             |                                 
            
                24,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2017
             | 
            
                +0.90 / +0.84%
             |             
            
                107.30
             |           
            
                109.50
             |               
            
                107.30
             |                           
            
                108.50
             | 
            
                108.81
             |                     
            
                33.61
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2017
             | 
            
                -1.40 / -1.28%
             |             
            
                109.00
             |           
            
                109.50
             |               
            
                107.50
             |                           
            
                107.60
             | 
            
                108.11
             |                     
            
                33.33
             |                                 
            
                15,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                109.00
             |           
            
                110.90
             |               
            
                108.50
             |                           
            
                109.00
             | 
            
                108.96
             |                     
            
                33.76
             |                                 
            
                9,260
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2017
             | 
            
                -0.90 / -0.82%
             |             
            
                111.00
             |           
            
                111.70
             |               
            
                109.00
             |                           
            
                109.00
             | 
            
                109.60
             |                     
            
                33.76
             |                                 
            
                17,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2017
             | 
            
                +1.80 / +1.67%
             |             
            
                108.00
             |           
            
                109.90
             |               
            
                106.60
             |                           
            
                109.90
             | 
            
                107.57
             |                     
            
                34.04
             |                                 
            
                32,490
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2017
             | 
            
                -2.00 / -1.82%
             |             
            
                108.20
             |           
            
                111.40
             |               
            
                108.10
             |                           
            
                108.10
             | 
            
                109.00
             |                     
            
                33.48
             |                                 
            
                45,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2017
             | 
            
                -24.90 / -18.44%
             |             
            
                113.00
             |           
            
                113.50
             |               
            
                106.50
             |                           
            
                110.10
             | 
            
                112.03
             |                     
            
                34.10
             |                                 
            
                71,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2017
             | 
            
                +1.00 / +0.75%
             |             
            
                135.50
             |           
            
                135.50
             |               
            
                134.00
             |                           
            
                135.00
             | 
            
                134.56
             |                     
            
                34.59
             |                                 
            
                30,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2017
             | 
            
                -0.50 / -0.37%
             |             
            
                135.50
             |           
            
                136.00
             |               
            
                133.70
             |                           
            
                134.00
             | 
            
                134.45
             |                     
            
                34.33
             |                                 
            
                48,830
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2017
             | 
            
                -0.50 / -0.37%
             |             
            
                135.50
             |           
            
                136.00
             |               
            
                134.00
             |                           
            
                134.50
             | 
            
                134.98
             |                     
            
                34.46
             |                                 
            
                35,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2017
             | 
            
                -2.60 / -1.89%
             |             
            
                137.70
             |           
            
                137.70
             |               
            
                134.50
             |                           
            
                135.00
             | 
            
                135.57
             |                     
            
                34.59
             |                                 
            
                38,540
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2017
             | 
            
                +1.60 / +1.18%
             |             
            
                136.00
             |           
            
                138.00
             |               
            
                136.00
             |                           
            
                137.60
             | 
            
                137.49
             |                     
            
                35.25
             |                                 
            
                27,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2017
             | 
            
                +0.90 / +0.67%
             |             
            
                135.00
             |           
            
                136.50
             |               
            
                135.00
             |                           
            
                136.00
             | 
            
                135.47
             |                     
            
                34.84
             |                                 
            
                18,410
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2017
             | 
            
                +0.60 / +0.45%
             |             
            
                135.50
             |           
            
                136.50
             |               
            
                135.00
             |                           
            
                135.10
             | 
            
                135.43
             |                     
            
                34.61
             |                                 
            
                81,710
             |  
            
                 
             |                                                              
             
    
         
    
    
 |