| 
                 
                    Closing price on 4/12/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    85.00 | 
                 
                
                    | High | 
                    85.50 | 
                 
                
                    | Low | 
                    83.00 | 
                     
                
                    | Volume | 
                    153,300 | 
                                 
                
                    | Split-adjusted Price | 
                    50.55 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/12/2021
             | 
            
                -0.50 / -0.59%
             |             
            
                85.00
             |           
            
                85.50
             |               
            
                83.00
             |                           
            
                84.50
             | 
            
                84.29
             |                     
            
                50.55
             |                                 
            
                153,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2021
             | 
            
                -0.70 / -0.82%
             |             
            
                85.70
             |           
            
                85.90
             |               
            
                84.70
             |                           
            
                85.00
             | 
            
                85.08
             |                     
            
                50.85
             |                                 
            
                61,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2021
             | 
            
                -0.80 / -0.92%
             |             
            
                85.50
             |           
            
                86.10
             |               
            
                84.50
             |                           
            
                85.70
             | 
            
                85.36
             |                     
            
                51.27
             |                                 
            
                61,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2021
             | 
            
                +2.70 / +3.22%
             |             
            
                84.50
             |           
            
                88.00
             |               
            
                84.50
             |                           
            
                86.50
             | 
            
                86.50
             |                     
            
                51.75
             |                                 
            
                209,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2021
             | 
            
                -0.20 / -0.24%
             |             
            
                83.30
             |           
            
                84.50
             |               
            
                83.20
             |                           
            
                83.80
             | 
            
                84.00
             |                     
            
                50.14
             |                                 
            
                120,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2021
             | 
            
                -0.80 / -0.94%
             |             
            
                85.90
             |           
            
                85.90
             |               
            
                83.60
             |                           
            
                84.00
             | 
            
                84.37
             |                     
            
                50.26
             |                                 
            
                147,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2021
             | 
            
                +0.30 / +0.36%
             |             
            
                86.30
             |           
            
                86.30
             |               
            
                84.00
             |                           
            
                84.80
             | 
            
                84.60
             |                     
            
                50.73
             |                                 
            
                217,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2021
             | 
            
                -2.00 / -2.31%
             |             
            
                86.00
             |           
            
                86.00
             |               
            
                84.50
             |                           
            
                84.50
             | 
            
                84.50
             |                     
            
                50.55
             |                                 
            
                249,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2021
             | 
            
                0.00 / 0.00%
             |             
            
                86.50
             |           
            
                87.00
             |               
            
                85.60
             |                           
            
                86.50
             | 
            
                86.12
             |                     
            
                51.75
             |                                 
            
                84,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2021
             | 
            
                0.00 / 0.00%
             |             
            
                86.70
             |           
            
                87.60
             |               
            
                85.50
             |                           
            
                86.50
             | 
            
                86.28
             |                     
            
                51.75
             |                                 
            
                79,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2021
             | 
            
                +5.60 / +6.92%
             |             
            
                81.90
             |           
            
                86.50
             |               
            
                81.90
             |                           
            
                86.50
             | 
            
                85.63
             |                     
            
                51.75
             |                                 
            
                729,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2021
             | 
            
                +0.30 / +0.37%
             |             
            
                80.60
             |           
            
                81.00
             |               
            
                79.00
             |                           
            
                80.90
             | 
            
                80.09
             |                     
            
                48.40
             |                                 
            
                178,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2021
             | 
            
                +1.00 / +1.26%
             |             
            
                80.00
             |           
            
                81.70
             |               
            
                79.60
             |                           
            
                80.60
             | 
            
                80.12
             |                     
            
                48.22
             |                                 
            
                157,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2021
             | 
            
                -1.00 / -1.24%
             |             
            
                80.00
             |           
            
                80.50
             |               
            
                79.00
             |                           
            
                79.60
             | 
            
                79.82
             |                     
            
                47.62
             |                                 
            
                151,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2021
             | 
            
                +0.60 / +0.75%
             |             
            
                79.50
             |           
            
                82.00
             |               
            
                79.50
             |                           
            
                80.60
             | 
            
                80.23
             |                     
            
                48.22
             |                                 
            
                242,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2021
             | 
            
                -1.80 / -2.20%
             |             
            
                82.00
             |           
            
                82.00
             |               
            
                79.50
             |                           
            
                80.00
             | 
            
                80.47
             |                     
            
                47.86
             |                                 
            
                156,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2021
             | 
            
                -0.70 / -0.85%
             |             
            
                82.50
             |           
            
                82.50
             |               
            
                80.50
             |                           
            
                81.80
             | 
            
                81.05
             |                     
            
                48.94
             |                                 
            
                144,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2021
             | 
            
                -0.30 / -0.36%
             |             
            
                82.80
             |           
            
                82.80
             |               
            
                82.00
             |                           
            
                82.50
             | 
            
                82.38
             |                     
            
                49.36
             |                                 
            
                83,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2021
             | 
            
                +0.20 / +0.24%
             |             
            
                82.60
             |           
            
                83.00
             |               
            
                82.10
             |                           
            
                82.80
             | 
            
                82.69
             |                     
            
                49.54
             |                                 
            
                100,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2021
             | 
            
                +0.10 / +0.12%
             |             
            
                83.00
             |           
            
                84.00
             |               
            
                82.10
             |                           
            
                82.60
             | 
            
                82.50
             |                     
            
                49.42
             |                                 
            
                203,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2021
             | 
            
                +2.50 / +3.13%
             |             
            
                80.10
             |           
            
                82.90
             |               
            
                80.10
             |                           
            
                82.50
             | 
            
                81.70
             |                     
            
                49.36
             |                                 
            
                97,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2021
             | 
            
                +0.40 / +0.50%
             |             
            
                79.50
             |           
            
                80.30
             |               
            
                79.30
             |                           
            
                80.00
             | 
            
                79.80
             |                     
            
                47.86
             |                                 
            
                275,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2021
             | 
            
                -0.10 / -0.13%
             |             
            
                79.70
             |           
            
                81.50
             |               
            
                79.00
             |                           
            
                79.60
             | 
            
                79.64
             |                     
            
                47.62
             |                                 
            
                192,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2021
             | 
            
                -0.30 / -0.38%
             |             
            
                80.00
             |           
            
                80.10
             |               
            
                78.50
             |                           
            
                79.70
             | 
            
                79.49
             |                     
            
                47.68
             |                                 
            
                48,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2021
             | 
            
                +0.90 / +1.14%
             |             
            
                79.10
             |           
            
                81.50
             |               
            
                78.80
             |                           
            
                80.00
             | 
            
                79.10
             |                     
            
                47.86
             |                                 
            
                149,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2021
             | 
            
                +3.30 / +4.35%
             |             
            
                76.50
             |           
            
                81.00
             |               
            
                75.00
             |                           
            
                79.10
             | 
            
                77.88
             |                     
            
                47.32
             |                                 
            
                661,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2021
             | 
            
                +1.80 / +2.43%
             |             
            
                74.00
             |           
            
                76.00
             |               
            
                73.20
             |                           
            
                75.80
             | 
            
                74.00
             |                     
            
                45.35
             |                                 
            
                107,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2021
             | 
            
                -1.00 / -1.33%
             |             
            
                75.00
             |           
            
                76.50
             |               
            
                74.00
             |                           
            
                74.00
             | 
            
                75.78
             |                     
            
                44.27
             |                                 
            
                243,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/3/2021
             | 
            
                +0.40 / +0.54%
             |             
            
                74.00
             |           
            
                75.50
             |               
            
                73.80
             |                           
            
                75.00
             | 
            
                74.72
             |                     
            
                44.87
             |                                 
            
                88,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2021
             | 
            
                -1.10 / -1.45%
             |             
            
                76.50
             |           
            
                76.50
             |               
            
                74.00
             |                           
            
                74.60
             | 
            
                74.83
             |                     
            
                44.63
             |                                 
            
                142,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |