| 
                 
                    Closing price on 10/3/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    70.50 | 
                 
                
                    | High | 
                    71.10 | 
                 
                
                    | Low | 
                    70.00 | 
                     
                
                    | Volume | 
                    143,600 | 
                                 
                
                    | Split-adjusted Price | 
                    39.87 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/3/2019
             | 
            
                +0.10 / +0.14%
             |             
            
                70.50
             |           
            
                71.10
             |               
            
                70.00
             |                           
            
                70.90
             | 
            
                70.63
             |                     
            
                39.87
             |                                 
            
                143,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/2/2019
             | 
            
                -0.40 / -0.56%
             |             
            
                71.00
             |           
            
                71.50
             |               
            
                70.70
             |                           
            
                70.80
             | 
            
                71.06
             |                     
            
                39.81
             |                                 
            
                144,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/1/2019
             | 
            
                +1.50 / +2.15%
             |             
            
                69.70
             |           
            
                71.20
             |               
            
                69.20
             |                           
            
                71.20
             | 
            
                70.60
             |                     
            
                40.04
             |                                 
            
                369,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2019
             | 
            
                +1.70 / +2.50%
             |             
            
                68.00
             |           
            
                70.00
             |               
            
                67.00
             |                           
            
                69.70
             | 
            
                69.16
             |                     
            
                39.19
             |                                 
            
                190,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/27/2019
             | 
            
                -0.50 / -0.73%
             |             
            
                68.50
             |           
            
                68.90
             |               
            
                67.50
             |                           
            
                68.00
             | 
            
                68.06
             |                     
            
                38.24
             |                                 
            
                55,550
             |            
            
                 
             |                                       
         
    
        
            | 
                9/26/2019
             | 
            
                +1.00 / +1.48%
             |             
            
                67.90
             |           
            
                68.70
             |               
            
                67.10
             |                           
            
                68.50
             | 
            
                67.80
             |                     
            
                38.52
             |                                 
            
                51,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/25/2019
             | 
            
                0.00 / 0.00%
             |             
            
                68.00
             |           
            
                68.00
             |               
            
                66.80
             |                           
            
                67.50
             | 
            
                67.08
             |                     
            
                37.96
             |                                 
            
                17,890
             |            
            
                 
             |                                       
         
    
        
            | 
                9/24/2019
             | 
            
                +1.50 / +2.27%
             |             
            
                65.80
             |           
            
                67.50
             |               
            
                65.80
             |                           
            
                67.50
             | 
            
                66.88
             |                     
            
                37.96
             |                                 
            
                41,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/23/2019
             | 
            
                -2.20 / -3.23%
             |             
            
                68.20
             |           
            
                68.20
             |               
            
                66.00
             |                           
            
                66.00
             | 
            
                67.08
             |                     
            
                37.11
             |                                 
            
                229,140
             |            
            
                 
             |                                       
         
    
        
            | 
                9/20/2019
             | 
            
                -0.30 / -0.44%
             |             
            
                68.50
             |           
            
                69.00
             |               
            
                68.20
             |                           
            
                68.20
             | 
            
                68.44
             |                     
            
                38.35
             |                                 
            
                72,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/19/2019
             | 
            
                0.00 / 0.00%
             |             
            
                68.50
             |           
            
                68.70
             |               
            
                68.20
             |                           
            
                68.50
             | 
            
                68.48
             |                     
            
                38.52
             |                                 
            
                49,370
             |            
            
                 
             |                                       
         
    
        
            | 
                9/18/2019
             | 
            
                +0.30 / +0.44%
             |             
            
                68.50
             |           
            
                70.00
             |               
            
                68.50
             |                           
            
                68.50
             | 
            
                68.68
             |                     
            
                38.52
             |                                 
            
                104,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/17/2019
             | 
            
                -1.60 / -2.29%
             |             
            
                69.90
             |           
            
                69.90
             |               
            
                68.20
             |                           
            
                68.20
             | 
            
                69.14
             |                     
            
                38.35
             |                                 
            
                61,020
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2019
             | 
            
                0.00 / 0.00%
             |             
            
                69.80
             |           
            
                69.80
             |               
            
                69.30
             |                           
            
                69.80
             | 
            
                69.59
             |                     
            
                39.25
             |                                 
            
                79,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2019
             | 
            
                +0.40 / +0.58%
             |             
            
                69.70
             |           
            
                69.80
             |               
            
                68.60
             |                           
            
                69.80
             | 
            
                69.46
             |                     
            
                39.25
             |                                 
            
                72,070
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2019
             | 
            
                -1.50 / -2.12%
             |             
            
                70.30
             |           
            
                70.30
             |               
            
                68.90
             |                           
            
                69.40
             | 
            
                69.38
             |                     
            
                39.02
             |                                 
            
                108,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/11/2019
             | 
            
                +2.60 / +3.81%
             |             
            
                68.40
             |           
            
                70.90
             |               
            
                68.20
             |                           
            
                70.90
             | 
            
                69.45
             |                     
            
                39.87
             |                                 
            
                56,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2019
             | 
            
                -0.30 / -0.44%
             |             
            
                69.00
             |           
            
                69.00
             |               
            
                68.00
             |                           
            
                68.30
             | 
            
                68.30
             |                     
            
                38.41
             |                                 
            
                140,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2019
             | 
            
                -0.40 / -0.58%
             |             
            
                68.30
             |           
            
                69.00
             |               
            
                68.00
             |                           
            
                68.60
             | 
            
                68.33
             |                     
            
                38.57
             |                                 
            
                68,320
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2019
             | 
            
                0.00 / 0.00%
             |             
            
                68.50
             |           
            
                69.10
             |               
            
                68.30
             |                           
            
                69.00
             | 
            
                68.72
             |                     
            
                38.80
             |                                 
            
                30,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2019
             | 
            
                -0.50 / -0.72%
             |             
            
                69.50
             |           
            
                69.80
             |               
            
                68.80
             |                           
            
                69.00
             | 
            
                69.34
             |                     
            
                38.80
             |                                 
            
                33,430
             |            
            
                 
             |                                       
         
    
        
            | 
                9/4/2019
             | 
            
                +1.20 / +1.76%
             |             
            
                68.30
             |           
            
                69.50
             |               
            
                67.60
             |                           
            
                69.50
             | 
            
                68.22
             |                     
            
                39.08
             |                                 
            
                143,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/3/2019
             | 
            
                -0.70 / -1.01%
             |             
            
                70.30
             |           
            
                70.30
             |               
            
                68.20
             |                           
            
                68.30
             | 
            
                68.74
             |                     
            
                38.41
             |                                 
            
                44,440
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2019
             | 
            
                +0.20 / +0.29%
             |             
            
                69.00
             |           
            
                70.00
             |               
            
                68.90
             |                           
            
                69.00
             | 
            
                69.22
             |                     
            
                38.80
             |                                 
            
                73,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2019
             | 
            
                -0.60 / -0.86%
             |             
            
                69.20
             |           
            
                69.50
             |               
            
                68.50
             |                           
            
                68.80
             | 
            
                68.86
             |                     
            
                38.69
             |                                 
            
                76,110
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2019
             | 
            
                -0.70 / -1.00%
             |             
            
                70.10
             |           
            
                70.10
             |               
            
                69.40
             |                           
            
                69.40
             | 
            
                69.57
             |                     
            
                39.02
             |                                 
            
                82,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2019
             | 
            
                +0.60 / +0.86%
             |             
            
                69.50
             |           
            
                70.50
             |               
            
                69.50
             |                           
            
                70.10
             | 
            
                69.84
             |                     
            
                39.42
             |                                 
            
                171,830
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2019
             | 
            
                -1.30 / -1.84%
             |             
            
                69.30
             |           
            
                70.70
             |               
            
                69.30
             |                           
            
                69.50
             | 
            
                69.75
             |                     
            
                39.08
             |                                 
            
                96,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2019
             | 
            
                -0.20 / -0.28%
             |             
            
                71.10
             |           
            
                71.10
             |               
            
                69.60
             |                           
            
                70.80
             | 
            
                70.30
             |                     
            
                39.81
             |                                 
            
                108,140
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2019
             | 
            
                -0.50 / -0.70%
             |             
            
                71.00
             |           
            
                71.50
             |               
            
                70.70
             |                           
            
                71.00
             | 
            
                70.98
             |                     
            
                39.92
             |                                 
            
                32,700
             |  
            
                 
             |                                                              
             
    
         
    
    
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