| 
                 
                    Closing price on 7/19/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    67.90 | 
                 
                
                    | High | 
                    68.30 | 
                 
                
                    | Low | 
                    67.60 | 
                     
                
                    | Volume | 
                    123,920 | 
                                 
                
                    | Split-adjusted Price | 
                    38.07 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/19/2019
             | 
            
                -0.60 / -0.88%
             |             
            
                67.90
             |           
            
                68.30
             |               
            
                67.60
             |                           
            
                67.70
             | 
            
                67.88
             |                     
            
                38.07
             |                                 
            
                123,920
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2019
             | 
            
                +0.80 / +1.19%
             |             
            
                67.50
             |           
            
                68.50
             |               
            
                67.30
             |                           
            
                68.30
             | 
            
                68.09
             |                     
            
                38.41
             |                                 
            
                149,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2019
             | 
            
                -1.00 / -1.46%
             |             
            
                68.20
             |           
            
                68.50
             |               
            
                67.40
             |                           
            
                67.50
             | 
            
                67.88
             |                     
            
                37.96
             |                                 
            
                253,360
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2019
             | 
            
                -2.20 / -3.11%
             |             
            
                70.40
             |           
            
                70.50
             |               
            
                68.10
             |                           
            
                68.50
             | 
            
                69.16
             |                     
            
                38.52
             |                                 
            
                689,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/15/2019
             | 
            
                -0.40 / -0.56%
             |             
            
                71.10
             |           
            
                71.70
             |               
            
                70.50
             |                           
            
                70.70
             | 
            
                71.04
             |                     
            
                39.76
             |                                 
            
                161,070
             |            
            
                 
             |                                       
         
    
        
            | 
                7/12/2019
             | 
            
                +1.20 / +1.72%
             |             
            
                69.90
             |           
            
                71.30
             |               
            
                69.40
             |                           
            
                71.10
             | 
            
                70.09
             |                     
            
                39.98
             |                                 
            
                225,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/11/2019
             | 
            
                -1.40 / -1.96%
             |             
            
                71.20
             |           
            
                71.30
             |               
            
                69.70
             |                           
            
                69.90
             | 
            
                70.35
             |                     
            
                39.31
             |                                 
            
                201,940
             |            
            
                 
             |                                       
         
    
        
            | 
                7/10/2019
             | 
            
                +1.00 / +1.42%
             |             
            
                70.30
             |           
            
                71.40
             |               
            
                70.20
             |                           
            
                71.30
             | 
            
                70.95
             |                     
            
                40.09
             |                                 
            
                219,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2019
             | 
            
                +0.10 / +0.14%
             |             
            
                70.10
             |           
            
                71.30
             |               
            
                70.00
             |                           
            
                70.30
             | 
            
                70.57
             |                     
            
                39.53
             |                                 
            
                113,710
             |            
            
                 
             |                                       
         
    
        
            | 
                7/8/2019
             | 
            
                -0.90 / -1.27%
             |             
            
                71.20
             |           
            
                71.30
             |               
            
                70.00
             |                           
            
                70.20
             | 
            
                70.41
             |                     
            
                39.47
             |                                 
            
                175,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2019
             | 
            
                +0.10 / +0.14%
             |             
            
                71.00
             |           
            
                72.00
             |               
            
                71.00
             |                           
            
                71.10
             | 
            
                71.48
             |                     
            
                39.98
             |                                 
            
                151,640
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2019
             | 
            
                0.00 / 0.00%
             |             
            
                71.30
             |           
            
                71.50
             |               
            
                70.50
             |                           
            
                71.00
             | 
            
                71.11
             |                     
            
                39.92
             |                                 
            
                108,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2019
             | 
            
                +2.00 / +2.90%
             |             
            
                69.00
             |           
            
                71.10
             |               
            
                69.00
             |                           
            
                71.00
             | 
            
                70.50
             |                     
            
                39.92
             |                                 
            
                250,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/2/2019
             | 
            
                -1.50 / -2.13%
             |             
            
                70.90
             |           
            
                70.90
             |               
            
                69.00
             |                           
            
                69.00
             | 
            
                69.81
             |                     
            
                38.80
             |                                 
            
                135,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/1/2019
             | 
            
                +2.70 / +3.98%
             |             
            
                68.00
             |           
            
                70.50
             |               
            
                68.00
             |                           
            
                70.50
             | 
            
                69.83
             |                     
            
                39.64
             |                                 
            
                435,840
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2019
             | 
            
                +0.20 / +0.30%
             |             
            
                68.00
             |           
            
                68.00
             |               
            
                67.40
             |                           
            
                67.80
             | 
            
                67.71
             |                     
            
                38.12
             |                                 
            
                67,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2019
             | 
            
                +0.50 / +0.75%
             |             
            
                67.40
             |           
            
                68.10
             |               
            
                67.10
             |                           
            
                67.60
             | 
            
                67.72
             |                     
            
                38.01
             |                                 
            
                246,080
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2019
             | 
            
                +0.60 / +0.90%
             |             
            
                66.50
             |           
            
                68.00
             |               
            
                66.50
             |                           
            
                67.10
             | 
            
                67.20
             |                     
            
                37.73
             |                                 
            
                117,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2019
             | 
            
                -1.00 / -1.48%
             |             
            
                67.40
             |           
            
                67.40
             |               
            
                66.40
             |                           
            
                66.50
             | 
            
                66.76
             |                     
            
                37.39
             |                                 
            
                178,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/24/2019
             | 
            
                -0.30 / -0.44%
             |             
            
                68.50
             |           
            
                68.60
             |               
            
                67.50
             |                           
            
                67.50
             | 
            
                67.92
             |                     
            
                37.96
             |                                 
            
                74,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2019
             | 
            
                -0.40 / -0.59%
             |             
            
                68.20
             |           
            
                68.70
             |               
            
                67.80
             |                           
            
                67.80
             | 
            
                68.22
             |                     
            
                38.12
             |                                 
            
                56,540
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2019
             | 
            
                -0.40 / -0.58%
             |             
            
                68.10
             |           
            
                69.30
             |               
            
                68.00
             |                           
            
                68.20
             | 
            
                68.49
             |                     
            
                38.35
             |                                 
            
                141,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2019
             | 
            
                +0.30 / +0.44%
             |             
            
                68.50
             |           
            
                69.50
             |               
            
                68.10
             |                           
            
                68.60
             | 
            
                68.59
             |                     
            
                38.57
             |                                 
            
                107,050
             |            
            
                 
             |                                       
         
    
        
            | 
                6/18/2019
             | 
            
                +0.90 / +1.34%
             |             
            
                67.40
             |           
            
                68.30
             |               
            
                67.00
             |                           
            
                68.30
             | 
            
                67.55
             |                     
            
                38.41
             |                                 
            
                129,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/17/2019
             | 
            
                -0.60 / -0.88%
             |             
            
                68.00
             |           
            
                68.50
             |               
            
                67.00
             |                           
            
                67.40
             | 
            
                67.47
             |                     
            
                37.90
             |                                 
            
                89,960
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2019
             | 
            
                0.00 / 0.00%
             |             
            
                68.00
             |           
            
                69.20
             |               
            
                67.60
             |                           
            
                68.00
             | 
            
                68.08
             |                     
            
                38.24
             |                                 
            
                82,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2019
             | 
            
                +0.40 / +0.59%
             |             
            
                67.10
             |           
            
                69.50
             |               
            
                67.10
             |                           
            
                68.00
             | 
            
                68.52
             |                     
            
                38.24
             |                                 
            
                199,150
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2019
             | 
            
                -1.00 / -1.46%
             |             
            
                68.60
             |           
            
                69.00
             |               
            
                67.60
             |                           
            
                67.60
             | 
            
                68.06
             |                     
            
                38.01
             |                                 
            
                150,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2019
             | 
            
                +2.00 / +3.00%
             |             
            
                67.00
             |           
            
                69.40
             |               
            
                67.00
             |                           
            
                68.60
             | 
            
                68.42
             |                     
            
                38.57
             |                                 
            
                375,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2019
             | 
            
                +2.30 / +3.58%
             |             
            
                64.70
             |           
            
                66.80
             |               
            
                64.30
             |                           
            
                66.60
             | 
            
                66.13
             |                     
            
                37.45
             |                                 
            
                343,590
             |  
            
                 
             |                                                              
             
    
         
    
    
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