| 
                 
                    Closing price on 11/27/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    56.40 | 
                 
                
                    | High | 
                    57.50 | 
                 
                
                    | Low | 
                    56.40 | 
                     
                
                    | Volume | 
                    235,650 | 
                                 
                
                    | Split-adjusted Price | 
                    34.28 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/27/2020
             | 
            
                +0.90 / +1.60%
             |             
            
                56.40
             |           
            
                57.50
             |               
            
                56.40
             |                           
            
                57.30
             | 
            
                57.03
             |                     
            
                34.28
             |                                 
            
                235,650
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2020
             | 
            
                -0.10 / -0.18%
             |             
            
                56.20
             |           
            
                56.40
             |               
            
                55.80
             |                           
            
                56.40
             | 
            
                56.11
             |                     
            
                33.74
             |                                 
            
                190,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2020
             | 
            
                -0.50 / -0.88%
             |             
            
                57.00
             |           
            
                57.40
             |               
            
                56.30
             |                           
            
                56.50
             | 
            
                56.75
             |                     
            
                33.80
             |                                 
            
                183,110
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2020
             | 
            
                -0.50 / -0.87%
             |             
            
                57.50
             |           
            
                57.80
             |               
            
                56.60
             |                           
            
                57.00
             | 
            
                57.04
             |                     
            
                34.10
             |                                 
            
                331,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2020
             | 
            
                +1.20 / +2.13%
             |             
            
                56.20
             |           
            
                57.80
             |               
            
                55.90
             |                           
            
                57.50
             | 
            
                56.76
             |                     
            
                34.40
             |                                 
            
                255,830
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2020
             | 
            
                0.00 / 0.00%
             |             
            
                56.30
             |           
            
                56.80
             |               
            
                56.00
             |                           
            
                56.30
             | 
            
                56.28
             |                     
            
                33.68
             |                                 
            
                280,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2020
             | 
            
                +2.10 / +3.87%
             |             
            
                54.20
             |           
            
                56.80
             |               
            
                54.20
             |                           
            
                56.30
             | 
            
                55.87
             |                     
            
                33.68
             |                                 
            
                496,090
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2020
             | 
            
                -0.20 / -0.37%
             |             
            
                54.40
             |           
            
                54.50
             |               
            
                54.00
             |                           
            
                54.20
             | 
            
                54.17
             |                     
            
                32.43
             |                                 
            
                138,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2020
             | 
            
                +0.80 / +1.49%
             |             
            
                54.00
             |           
            
                54.40
             |               
            
                53.30
             |                           
            
                54.40
             | 
            
                53.78
             |                     
            
                32.55
             |                                 
            
                144,680
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2020
             | 
            
                -0.90 / -1.65%
             |             
            
                54.50
             |           
            
                54.90
             |               
            
                53.60
             |                           
            
                53.60
             | 
            
                53.94
             |                     
            
                32.07
             |                                 
            
                287,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2020
             | 
            
                +0.10 / +0.18%
             |             
            
                54.40
             |           
            
                54.60
             |               
            
                53.80
             |                           
            
                54.50
             | 
            
                54.26
             |                     
            
                32.61
             |                                 
            
                226,280
             |            
            
                 
             |                                       
         
    
        
            | 
                11/12/2020
             | 
            
                +0.30 / +0.55%
             |             
            
                54.90
             |           
            
                54.90
             |               
            
                53.90
             |                           
            
                54.40
             | 
            
                54.31
             |                     
            
                32.55
             |                                 
            
                215,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/11/2020
             | 
            
                +0.60 / +1.12%
             |             
            
                53.50
             |           
            
                54.80
             |               
            
                53.50
             |                           
            
                54.10
             | 
            
                54.20
             |                     
            
                32.37
             |                                 
            
                367,050
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2020
             | 
            
                +0.10 / +0.19%
             |             
            
                54.50
             |           
            
                54.60
             |               
            
                53.30
             |                           
            
                53.50
             | 
            
                53.66
             |                     
            
                32.01
             |                                 
            
                218,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2020
             | 
            
                +0.90 / +1.71%
             |             
            
                52.50
             |           
            
                53.50
             |               
            
                52.50
             |                           
            
                53.40
             | 
            
                53.07
             |                     
            
                31.95
             |                                 
            
                276,470
             |            
            
                 
             |                                       
         
    
        
            | 
                11/6/2020
             | 
            
                -0.10 / -0.19%
             |             
            
                52.60
             |           
            
                52.80
             |               
            
                52.10
             |                           
            
                52.50
             | 
            
                52.45
             |                     
            
                31.41
             |                                 
            
                75,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/5/2020
             | 
            
                -0.70 / -1.31%
             |             
            
                53.30
             |           
            
                53.40
             |               
            
                52.50
             |                           
            
                52.60
             | 
            
                52.93
             |                     
            
                31.47
             |                                 
            
                103,370
             |            
            
                 
             |                                       
         
    
        
            | 
                11/4/2020
             | 
            
                +0.90 / +1.72%
             |             
            
                53.40
             |           
            
                53.40
             |               
            
                52.60
             |                           
            
                53.30
             | 
            
                53.00
             |                     
            
                31.89
             |                                 
            
                134,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/3/2020
             | 
            
                +0.40 / +0.77%
             |             
            
                52.50
             |           
            
                53.20
             |               
            
                51.90
             |                           
            
                52.40
             | 
            
                52.34
             |                     
            
                31.35
             |                                 
            
                420,450
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2020
             | 
            
                +0.20 / +0.39%
             |             
            
                52.40
             |           
            
                52.40
             |               
            
                51.90
             |                           
            
                52.00
             | 
            
                52.02
             |                     
            
                31.11
             |                                 
            
                69,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/30/2020
             | 
            
                +0.20 / +0.39%
             |             
            
                51.60
             |           
            
                52.50
             |               
            
                51.10
             |                           
            
                51.80
             | 
            
                51.55
             |                     
            
                30.99
             |                                 
            
                66,830
             |            
            
                 
             |                                       
         
    
        
            | 
                10/29/2020
             | 
            
                +0.10 / +0.19%
             |             
            
                50.60
             |           
            
                52.30
             |               
            
                50.60
             |                           
            
                51.60
             | 
            
                51.49
             |                     
            
                30.87
             |                                 
            
                87,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/28/2020
             | 
            
                -1.50 / -2.83%
             |             
            
                52.50
             |           
            
                52.80
             |               
            
                51.00
             |                           
            
                51.50
             | 
            
                52.10
             |                     
            
                30.81
             |                                 
            
                133,620
             |            
            
                 
             |                                       
         
    
        
            | 
                10/27/2020
             | 
            
                +0.20 / +0.38%
             |             
            
                52.80
             |           
            
                53.50
             |               
            
                52.40
             |                           
            
                53.00
             | 
            
                52.80
             |                     
            
                31.71
             |                                 
            
                105,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/26/2020
             | 
            
                0.00 / 0.00%
             |             
            
                53.40
             |           
            
                54.00
             |               
            
                52.80
             |                           
            
                52.80
             | 
            
                53.37
             |                     
            
                31.59
             |                                 
            
                168,890
             |            
            
                 
             |                                       
         
    
        
            | 
                10/23/2020
             | 
            
                -1.30 / -2.40%
             |             
            
                54.00
             |           
            
                54.20
             |               
            
                52.70
             |                           
            
                52.80
             | 
            
                53.19
             |                     
            
                31.59
             |                                 
            
                365,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/22/2020
             | 
            
                +0.50 / +0.93%
             |             
            
                53.40
             |           
            
                54.50
             |               
            
                52.10
             |                           
            
                54.10
             | 
            
                53.30
             |                     
            
                32.37
             |                                 
            
                124,980
             |            
            
                 
             |                                       
         
    
        
            | 
                10/21/2020
             | 
            
                -2.40 / -4.29%
             |             
            
                55.60
             |           
            
                55.90
             |               
            
                53.60
             |                           
            
                53.60
             | 
            
                54.39
             |                     
            
                32.07
             |                                 
            
                604,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/20/2020
             | 
            
                +0.10 / +0.18%
             |             
            
                55.90
             |           
            
                56.00
             |               
            
                55.40
             |                           
            
                56.00
             | 
            
                55.71
             |                     
            
                33.50
             |                                 
            
                123,030
             |            
            
                 
             |                                       
         
    
        
            | 
                10/19/2020
             | 
            
                -1.10 / -1.93%
             |             
            
                57.20
             |           
            
                57.20
             |               
            
                55.50
             |                           
            
                55.90
             | 
            
                56.25
             |                     
            
                33.44
             |                                 
            
                261,560
             |  
            
                 
             |                                                              
             
    
         
    
    
 |