| 
                 
                    Closing price on 8/4/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    44.50 | 
                 
                
                    | High | 
                    45.50 | 
                 
                
                    | Low | 
                    44.50 | 
                     
                
                    | Volume | 
                    56,690 | 
                                 
                
                    | Split-adjusted Price | 
                    26.95 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/4/2020
             | 
            
                +0.95 / +2.15%
             |             
            
                44.50
             |           
            
                45.50
             |               
            
                44.50
             |                           
            
                45.05
             | 
            
                44.95
             |                     
            
                26.95
             |                                 
            
                56,690
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2020
             | 
            
                +0.30 / +0.68%
             |             
            
                42.85
             |           
            
                45.00
             |               
            
                42.85
             |                           
            
                44.10
             | 
            
                44.46
             |                     
            
                26.38
             |                                 
            
                89,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2020
             | 
            
                -0.20 / -0.45%
             |             
            
                43.10
             |           
            
                44.10
             |               
            
                43.00
             |                           
            
                43.80
             | 
            
                43.68
             |                     
            
                26.20
             |                                 
            
                34,890
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2020
             | 
            
                +1.00 / +2.33%
             |             
            
                44.50
             |           
            
                44.50
             |               
            
                43.25
             |                           
            
                44.00
             | 
            
                43.79
             |                     
            
                26.32
             |                                 
            
                38,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2020
             | 
            
                -2.90 / -6.32%
             |             
            
                45.80
             |           
            
                45.80
             |               
            
                42.70
             |                           
            
                43.00
             | 
            
                43.08
             |                     
            
                25.73
             |                                 
            
                289,250
             |            
            
                 
             |                                       
         
    
        
            | 
                7/28/2020
             | 
            
                +1.90 / +4.32%
             |             
            
                43.20
             |           
            
                45.90
             |               
            
                43.20
             |                           
            
                45.90
             | 
            
                44.68
             |                     
            
                27.46
             |                                 
            
                128,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2020
             | 
            
                -3.30 / -6.98%
             |             
            
                44.00
             |           
            
                46.00
             |               
            
                44.00
             |                           
            
                44.00
             | 
            
                44.42
             |                     
            
                26.32
             |                                 
            
                517,220
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2020
             | 
            
                -2.20 / -4.44%
             |             
            
                48.10
             |           
            
                49.50
             |               
            
                47.00
             |                           
            
                47.30
             | 
            
                48.20
             |                     
            
                28.30
             |                                 
            
                178,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2020
             | 
            
                -0.70 / -1.39%
             |             
            
                50.20
             |           
            
                50.50
             |               
            
                49.50
             |                           
            
                49.50
             | 
            
                49.70
             |                     
            
                29.61
             |                                 
            
                71,310
             |            
            
                 
             |                                       
         
    
        
            | 
                7/22/2020
             | 
            
                +0.20 / +0.40%
             |             
            
                50.20
             |           
            
                51.50
             |               
            
                50.20
             |                           
            
                50.20
             | 
            
                50.87
             |                     
            
                30.03
             |                                 
            
                79,930
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/21/2020
             | 
            
                -0.10 / -0.20%
             |             
            
                49.50
             |           
            
                50.20
             |               
            
                49.50
             |                           
            
                50.00
             | 
            
                49.94
             |                     
            
                29.91
             |                                 
            
                210,530
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2020
             | 
            
                -0.80 / -1.57%
             |             
            
                50.90
             |           
            
                50.90
             |               
            
                50.00
             |                           
            
                50.10
             | 
            
                50.31
             |                     
            
                29.97
             |                                 
            
                66,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2020
             | 
            
                -0.30 / -0.59%
             |             
            
                51.00
             |           
            
                51.50
             |               
            
                50.00
             |                           
            
                50.90
             | 
            
                50.98
             |                     
            
                30.45
             |                                 
            
                61,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2020
             | 
            
                -0.60 / -1.16%
             |             
            
                51.80
             |           
            
                52.00
             |               
            
                51.20
             |                           
            
                51.20
             | 
            
                51.66
             |                     
            
                30.63
             |                                 
            
                65,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/15/2020
             | 
            
                +0.20 / +0.39%
             |             
            
                51.60
             |           
            
                51.80
             |               
            
                51.20
             |                           
            
                51.80
             | 
            
                51.49
             |                     
            
                30.99
             |                                 
            
                70,970
             |            
            
                 
             |                                       
         
    
        
            | 
                7/14/2020
             | 
            
                0.00 / 0.00%
             |             
            
                51.60
             |           
            
                51.80
             |               
            
                51.00
             |                           
            
                51.60
             | 
            
                51.31
             |                     
            
                30.87
             |                                 
            
                66,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/13/2020
             | 
            
                +0.50 / +0.98%
             |             
            
                52.80
             |           
            
                52.80
             |               
            
                51.10
             |                           
            
                51.60
             | 
            
                51.62
             |                     
            
                30.87
             |                                 
            
                107,080
             |            
            
                 
             |                                       
         
    
        
            | 
                7/10/2020
             | 
            
                +0.60 / +1.14%
             |             
            
                52.50
             |           
            
                53.80
             |               
            
                52.40
             |                           
            
                53.10
             | 
            
                52.99
             |                     
            
                30.57
             |                                 
            
                193,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2020
             | 
            
                +0.40 / +0.77%
             |             
            
                52.10
             |           
            
                52.70
             |               
            
                52.10
             |                           
            
                52.50
             | 
            
                52.46
             |                     
            
                30.23
             |                                 
            
                70,720
             |            
            
                 
             |                                       
         
    
        
            | 
                7/8/2020
             | 
            
                -0.10 / -0.19%
             |             
            
                52.00
             |           
            
                52.40
             |               
            
                51.60
             |                           
            
                52.10
             | 
            
                51.99
             |                     
            
                30.00
             |                                 
            
                55,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/7/2020
             | 
            
                +0.20 / +0.38%
             |             
            
                52.50
             |           
            
                52.80
             |               
            
                52.10
             |                           
            
                52.20
             | 
            
                52.31
             |                     
            
                30.05
             |                                 
            
                128,370
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2020
             | 
            
                +0.20 / +0.39%
             |             
            
                51.80
             |           
            
                52.50
             |               
            
                51.60
             |                           
            
                52.00
             | 
            
                52.20
             |                     
            
                29.94
             |                                 
            
                70,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2020
             | 
            
                +0.80 / +1.57%
             |             
            
                51.50
             |           
            
                52.50
             |               
            
                51.40
             |                           
            
                51.80
             | 
            
                51.83
             |                     
            
                29.82
             |                                 
            
                88,030
             |            
            
                 
             |                                       
         
    
        
            | 
                7/2/2020
             | 
            
                +0.50 / +0.99%
             |             
            
                51.10
             |           
            
                51.20
             |               
            
                50.50
             |                           
            
                51.00
             | 
            
                50.78
             |                     
            
                29.36
             |                                 
            
                72,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/1/2020
             | 
            
                +1.50 / +3.06%
             |             
            
                48.70
             |           
            
                50.50
             |               
            
                48.70
             |                           
            
                50.50
             | 
            
                49.74
             |                     
            
                29.07
             |                                 
            
                66,060
             |            
            
                 
             |                                       
         
    
        
            | 
                6/30/2020
             | 
            
                -0.10 / -0.20%
             |             
            
                49.10
             |           
            
                50.00
             |               
            
                48.50
             |                           
            
                49.00
             | 
            
                49.07
             |                     
            
                28.21
             |                                 
            
                193,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2020
             | 
            
                -1.20 / -2.39%
             |             
            
                50.00
             |           
            
                50.20
             |               
            
                49.00
             |                           
            
                49.10
             | 
            
                49.28
             |                     
            
                28.27
             |                                 
            
                151,270
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2020
             | 
            
                +0.40 / +0.80%
             |             
            
                51.20
             |           
            
                51.20
             |               
            
                50.00
             |                           
            
                50.30
             | 
            
                50.43
             |                     
            
                28.96
             |                                 
            
                67,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2020
             | 
            
                -1.10 / -2.16%
             |             
            
                49.50
             |           
            
                50.40
             |               
            
                49.50
             |                           
            
                49.90
             | 
            
                49.97
             |                     
            
                28.73
             |                                 
            
                129,950
             |            
            
                 
             |                                       
         
    
        
            | 
                6/24/2020
             | 
            
                -0.40 / -0.78%
             |             
            
                51.10
             |           
            
                51.50
             |               
            
                50.40
             |                           
            
                51.00
             | 
            
                50.99
             |                     
            
                29.36
             |                                 
            
                176,460
             |  
            
                 
             |                                                              
             
    
         
    
    
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