| 
                 
                    Closing price on 6/18/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    53.00 | 
                 
                
                    | High | 
                    53.50 | 
                 
                
                    | Low | 
                    51.00 | 
                     
                
                    | Volume | 
                    286,400 | 
                                 
                
                    | Split-adjusted Price | 
                    29.82 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/18/2020
             | 
            
                -0.40 / -0.77%
             |             
            
                53.00
             |           
            
                53.50
             |               
            
                51.00
             |                           
            
                51.80
             | 
            
                52.64
             |                     
            
                29.82
             |                                 
            
                286,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2020
             | 
            
                +3.40 / +6.97%
             |             
            
                49.40
             |           
            
                52.20
             |               
            
                48.50
             |                           
            
                52.20
             | 
            
                51.62
             |                     
            
                30.05
             |                                 
            
                565,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2020
             | 
            
                +0.80 / +1.67%
             |             
            
                48.50
             |           
            
                49.00
             |               
            
                48.25
             |                           
            
                48.80
             | 
            
                48.55
             |                     
            
                28.10
             |                                 
            
                120,960
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2020
             | 
            
                -0.90 / -1.84%
             |             
            
                48.80
             |           
            
                48.80
             |               
            
                47.20
             |                           
            
                48.00
             | 
            
                47.88
             |                     
            
                27.64
             |                                 
            
                251,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2020
             | 
            
                -0.60 / -1.21%
             |             
            
                46.60
             |           
            
                49.30
             |               
            
                46.50
             |                           
            
                48.90
             | 
            
                47.63
             |                     
            
                28.15
             |                                 
            
                217,160
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2020
             | 
            
                -3.70 / -6.95%
             |             
            
                52.80
             |           
            
                53.10
             |               
            
                49.50
             |                           
            
                49.50
             | 
            
                51.28
             |                     
            
                28.50
             |                                 
            
                453,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2020
             | 
            
                -0.50 / -0.93%
             |             
            
                53.70
             |           
            
                53.70
             |               
            
                51.30
             |                           
            
                53.20
             | 
            
                52.82
             |                     
            
                30.63
             |                                 
            
                209,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2020
             | 
            
                +3.00 / +5.92%
             |             
            
                50.70
             |           
            
                54.20
             |               
            
                50.70
             |                           
            
                53.70
             | 
            
                53.43
             |                     
            
                30.92
             |                                 
            
                509,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2020
             | 
            
                +2.40 / +4.97%
             |             
            
                49.45
             |           
            
                51.00
             |               
            
                48.80
             |                           
            
                50.70
             | 
            
                49.92
             |                     
            
                29.19
             |                                 
            
                613,380
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2020
             | 
            
                +1.05 / +2.22%
             |             
            
                47.00
             |           
            
                48.40
             |               
            
                46.85
             |                           
            
                48.30
             | 
            
                47.65
             |                     
            
                27.81
             |                                 
            
                189,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2020
             | 
            
                +0.55 / +1.18%
             |             
            
                47.00
             |           
            
                47.35
             |               
            
                46.85
             |                           
            
                47.25
             | 
            
                47.14
             |                     
            
                27.20
             |                                 
            
                120,120
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2020
             | 
            
                +0.05 / +0.11%
             |             
            
                46.65
             |           
            
                47.00
             |               
            
                46.50
             |                           
            
                46.70
             | 
            
                46.63
             |                     
            
                26.89
             |                                 
            
                97,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2020
             | 
            
                -0.25 / -0.53%
             |             
            
                47.70
             |           
            
                47.70
             |               
            
                46.65
             |                           
            
                46.65
             | 
            
                47.04
             |                     
            
                26.86
             |                                 
            
                146,520
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2020
             | 
            
                +0.40 / +0.86%
             |             
            
                46.85
             |           
            
                47.00
             |               
            
                46.40
             |                           
            
                46.90
             | 
            
                46.69
             |                     
            
                27.00
             |                                 
            
                169,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2020
             | 
            
                -0.50 / -1.06%
             |             
            
                46.60
             |           
            
                47.00
             |               
            
                46.35
             |                           
            
                46.50
             | 
            
                46.52
             |                     
            
                26.77
             |                                 
            
                72,060
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2020
             | 
            
                -1.00 / -2.08%
             |             
            
                46.00
             |           
            
                47.80
             |               
            
                46.00
             |                           
            
                47.00
             | 
            
                47.02
             |                     
            
                27.06
             |                                 
            
                98,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2020
             | 
            
                -0.45 / -0.93%
             |             
            
                49.30
             |           
            
                49.30
             |               
            
                47.80
             |                           
            
                48.00
             | 
            
                48.56
             |                     
            
                27.64
             |                                 
            
                200,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2020
             | 
            
                +1.55 / +3.30%
             |             
            
                47.10
             |           
            
                48.45
             |               
            
                47.00
             |                           
            
                48.45
             | 
            
                47.74
             |                     
            
                27.89
             |                                 
            
                266,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2020
             | 
            
                +0.60 / +1.30%
             |             
            
                46.50
             |           
            
                47.30
             |               
            
                45.90
             |                           
            
                46.90
             | 
            
                46.63
             |                     
            
                27.00
             |                                 
            
                226,010
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2020
             | 
            
                -0.15 / -0.32%
             |             
            
                46.15
             |           
            
                46.80
             |               
            
                46.15
             |                           
            
                46.30
             | 
            
                46.41
             |                     
            
                26.66
             |                                 
            
                113,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2020
             | 
            
                +0.10 / +0.22%
             |             
            
                46.35
             |           
            
                46.90
             |               
            
                46.30
             |                           
            
                46.45
             | 
            
                46.53
             |                     
            
                26.74
             |                                 
            
                78,490
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2020
             | 
            
                -0.55 / -1.17%
             |             
            
                46.05
             |           
            
                46.70
             |               
            
                46.05
             |                           
            
                46.35
             | 
            
                46.27
             |                     
            
                26.69
             |                                 
            
                120,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2020
             | 
            
                -0.10 / -0.21%
             |             
            
                47.50
             |           
            
                47.50
             |               
            
                46.15
             |                           
            
                46.90
             | 
            
                46.55
             |                     
            
                27.00
             |                                 
            
                221,910
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2020
             | 
            
                +2.00 / +4.44%
             |             
            
                45.00
             |           
            
                47.00
             |               
            
                45.00
             |                           
            
                47.00
             | 
            
                46.17
             |                     
            
                27.06
             |                                 
            
                99,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2020
             | 
            
                -1.55 / -3.33%
             |             
            
                46.60
             |           
            
                46.80
             |               
            
                44.70
             |                           
            
                45.00
             | 
            
                45.32
             |                     
            
                25.91
             |                                 
            
                342,130
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2020
             | 
            
                -1.25 / -2.62%
             |             
            
                47.30
             |           
            
                47.50
             |               
            
                46.00
             |                           
            
                46.55
             | 
            
                46.65
             |                     
            
                26.80
             |                                 
            
                257,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2020
             | 
            
                -0.60 / -1.24%
             |             
            
                47.90
             |           
            
                48.90
             |               
            
                47.70
             |                           
            
                47.80
             | 
            
                48.26
             |                     
            
                27.52
             |                                 
            
                162,920
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2020
             | 
            
                +0.90 / +1.89%
             |             
            
                47.50
             |           
            
                48.40
             |               
            
                46.70
             |                           
            
                48.40
             | 
            
                47.81
             |                     
            
                27.87
             |                                 
            
                295,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2020
             | 
            
                +0.50 / +1.06%
             |             
            
                46.70
             |           
            
                47.50
             |               
            
                46.50
             |                           
            
                47.50
             | 
            
                47.03
             |                     
            
                27.35
             |                                 
            
                394,460
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2020
             | 
            
                +0.50 / +1.08%
             |             
            
                46.50
             |           
            
                47.00
             |               
            
                46.00
             |                           
            
                47.00
             | 
            
                46.71
             |                     
            
                27.06
             |                                 
            
                263,920
             |  
            
                 
             |                                                              
             
    
         
    
    
 |