| 
                 
                    Closing price on 2/22/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    72.00 | 
                 
                
                    | High | 
                    72.40 | 
                 
                
                    | Low | 
                    71.00 | 
                     
                
                    | Volume | 
                    149,300 | 
                                 
                
                    | Split-adjusted Price | 
                    42.66 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/22/2021
             | 
            
                -1.10 / -1.52%
             |             
            
                72.00
             |           
            
                72.40
             |               
            
                71.00
             |                           
            
                71.30
             | 
            
                71.90
             |                     
            
                42.66
             |                                 
            
                149,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2021
             | 
            
                +2.40 / +3.43%
             |             
            
                69.30
             |           
            
                72.50
             |               
            
                69.30
             |                           
            
                72.40
             | 
            
                71.20
             |                     
            
                43.32
             |                                 
            
                235,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2021
             | 
            
                -0.90 / -1.27%
             |             
            
                71.00
             |           
            
                71.00
             |               
            
                69.00
             |                           
            
                70.00
             | 
            
                70.01
             |                     
            
                41.88
             |                                 
            
                142,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2021
             | 
            
                +2.70 / +3.96%
             |             
            
                68.60
             |           
            
                72.00
             |               
            
                68.60
             |                           
            
                70.90
             | 
            
                69.97
             |                     
            
                42.42
             |                                 
            
                239,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2021
             | 
            
                +1.70 / +2.56%
             |             
            
                66.50
             |           
            
                68.30
             |               
            
                65.90
             |                           
            
                68.20
             | 
            
                67.33
             |                     
            
                40.80
             |                                 
            
                266,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2021
             | 
            
                +0.40 / +0.61%
             |             
            
                67.00
             |           
            
                67.20
             |               
            
                64.30
             |                           
            
                66.50
             | 
            
                66.53
             |                     
            
                39.79
             |                                 
            
                327,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2021
             | 
            
                +0.10 / +0.15%
             |             
            
                66.00
             |           
            
                67.00
             |               
            
                65.00
             |                           
            
                66.10
             | 
            
                65.96
             |                     
            
                39.55
             |                                 
            
                245,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2021
             | 
            
                +0.50 / +0.76%
             |             
            
                66.00
             |           
            
                66.80
             |               
            
                65.50
             |                           
            
                66.00
             | 
            
                66.23
             |                     
            
                39.49
             |                                 
            
                83,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2021
             | 
            
                +0.50 / +0.77%
             |             
            
                65.00
             |           
            
                66.20
             |               
            
                64.00
             |                           
            
                65.50
             | 
            
                65.48
             |                     
            
                39.19
             |                                 
            
                122,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2021
             | 
            
                +2.40 / +3.83%
             |             
            
                62.00
             |           
            
                65.20
             |               
            
                62.00
             |                           
            
                65.00
             | 
            
                63.95
             |                     
            
                38.89
             |                                 
            
                240,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2021
             | 
            
                -1.40 / -2.19%
             |             
            
                64.00
             |           
            
                65.00
             |               
            
                61.50
             |                           
            
                62.60
             | 
            
                62.76
             |                     
            
                37.45
             |                                 
            
                176,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2021
             | 
            
                +1.20 / +1.91%
             |             
            
                59.00
             |           
            
                65.00
             |               
            
                59.00
             |                           
            
                64.00
             | 
            
                62.99
             |                     
            
                38.29
             |                                 
            
                231,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2021
             | 
            
                -4.70 / -6.96%
             |             
            
                63.30
             |           
            
                65.00
             |               
            
                62.80
             |                           
            
                62.80
             | 
            
                62.80
             |                     
            
                37.57
             |                                 
            
                353,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2021
             | 
            
                -0.80 / -1.17%
             |             
            
                67.00
             |           
            
                68.40
             |               
            
                66.50
             |                           
            
                67.50
             | 
            
                68.30
             |                     
            
                40.38
             |                                 
            
                323,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2021
             | 
            
                0.00 / 0.00%
             |             
            
                68.00
             |           
            
                69.70
             |               
            
                66.60
             |                           
            
                68.30
             | 
            
                68.05
             |                     
            
                40.86
             |                                 
            
                205,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2021
             | 
            
                -0.20 / -0.29%
             |             
            
                68.50
             |           
            
                68.80
             |               
            
                67.80
             |                           
            
                68.30
             | 
            
                68.30
             |                     
            
                40.86
             |                                 
            
                129,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2021
             | 
            
                +3.80 / +5.87%
             |             
            
                65.00
             |           
            
                68.50
             |               
            
                65.00
             |                           
            
                68.50
             | 
            
                67.33
             |                     
            
                40.98
             |                                 
            
                483,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2021
             | 
            
                +1.10 / +1.73%
             |             
            
                64.00
             |           
            
                64.70
             |               
            
                63.80
             |                           
            
                64.70
             | 
            
                64.32
             |                     
            
                38.71
             |                                 
            
                216,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2021
             | 
            
                +2.60 / +4.26%
             |             
            
                63.00
             |           
            
                64.10
             |               
            
                60.00
             |                           
            
                63.60
             | 
            
                62.16
             |                     
            
                38.05
             |                                 
            
                307,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2021
             | 
            
                -2.30 / -3.63%
             |             
            
                63.30
             |           
            
                64.90
             |               
            
                59.00
             |                           
            
                61.00
             | 
            
                61.38
             |                     
            
                36.49
             |                                 
            
                240,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                64.00
             |           
            
                65.00
             |               
            
                63.30
             |                           
            
                63.30
             | 
            
                64.16
             |                     
            
                37.87
             |                                 
            
                234,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2021
             | 
            
                -0.10 / -0.16%
             |             
            
                63.00
             |           
            
                63.40
             |               
            
                62.80
             |                           
            
                63.30
             | 
            
                63.40
             |                     
            
                37.87
             |                                 
            
                179,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2021
             | 
            
                +1.70 / +2.76%
             |             
            
                61.70
             |           
            
                63.80
             |               
            
                61.00
             |                           
            
                63.40
             | 
            
                61.70
             |                     
            
                37.93
             |                                 
            
                309,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2021
             | 
            
                -0.20 / -0.32%
             |             
            
                61.90
             |           
            
                62.70
             |               
            
                61.50
             |                           
            
                61.70
             | 
            
                61.89
             |                     
            
                36.91
             |                                 
            
                149,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2021
             | 
            
                -0.90 / -1.43%
             |             
            
                62.80
             |           
            
                63.00
             |               
            
                59.00
             |                           
            
                61.90
             | 
            
                61.59
             |                     
            
                37.03
             |                                 
            
                146,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2021
             | 
            
                +1.40 / +2.28%
             |             
            
                62.10
             |           
            
                63.90
             |               
            
                60.80
             |                           
            
                62.80
             | 
            
                61.36
             |                     
            
                37.57
             |                                 
            
                299,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2021
             | 
            
                +1.40 / +2.33%
             |             
            
                60.20
             |           
            
                61.90
             |               
            
                60.20
             |                           
            
                61.40
             | 
            
                61.16
             |                     
            
                36.73
             |                                 
            
                390,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2021
             | 
            
                -0.30 / -0.50%
             |             
            
                60.00
             |           
            
                60.30
             |               
            
                58.90
             |                           
            
                60.00
             | 
            
                59.37
             |                     
            
                35.90
             |                                 
            
                245,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2021
             | 
            
                -0.70 / -1.15%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.00
             |                           
            
                60.30
             | 
            
                60.68
             |                     
            
                36.08
             |                                 
            
                385,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2021
             | 
            
                -0.80 / -1.29%
             |             
            
                61.80
             |           
            
                61.90
             |               
            
                60.80
             |                           
            
                61.00
             | 
            
                61.80
             |                     
            
                36.49
             |                                 
            
                156,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |