| 
                 
                    Closing price on 7/11/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    54.30 | 
                 
                
                    | High | 
                    55.30 | 
                 
                
                    | Low | 
                    54.30 | 
                     
                
                    | Volume | 
                    72,400 | 
                                 
                
                    | Split-adjusted Price | 
                    29.32 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/11/2018
             | 
            
                -0.50 / -0.90%
             |             
            
                54.30
             |           
            
                55.30
             |               
            
                54.30
             |                           
            
                54.90
             | 
            
                54.74
             |                     
            
                29.32
             |                                 
            
                72,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                55.40
             |           
            
                55.50
             |               
            
                54.80
             |                           
            
                55.40
             | 
            
                55.24
             |                     
            
                29.58
             |                                 
            
                16,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2018
             | 
            
                +0.50 / +0.91%
             |             
            
                54.90
             |           
            
                55.50
             |               
            
                54.30
             |                           
            
                55.40
             | 
            
                54.98
             |                     
            
                29.58
             |                                 
            
                187,290
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2018
             | 
            
                +0.10 / +0.18%
             |             
            
                54.80
             |           
            
                55.20
             |               
            
                54.00
             |                           
            
                54.90
             | 
            
                54.55
             |                     
            
                29.32
             |                                 
            
                140,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2018
             | 
            
                -0.20 / -0.36%
             |             
            
                55.00
             |           
            
                55.70
             |               
            
                54.50
             |                           
            
                54.80
             | 
            
                55.01
             |                     
            
                29.26
             |                                 
            
                134,220
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2018
             | 
            
                -0.90 / -1.61%
             |             
            
                55.00
             |           
            
                55.80
             |               
            
                54.10
             |                           
            
                55.00
             | 
            
                54.41
             |                     
            
                29.37
             |                                 
            
                72,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2018
             | 
            
                0.00 / 0.00%
             |             
            
                55.50
             |           
            
                56.00
             |               
            
                54.10
             |                           
            
                55.90
             | 
            
                55.33
             |                     
            
                29.85
             |                                 
            
                49,590
             |            
            
                 
             |                                       
         
    
        
            | 
                7/2/2018
             | 
            
                -0.10 / -0.18%
             |             
            
                56.00
             |           
            
                56.00
             |               
            
                53.50
             |                           
            
                55.90
             | 
            
                54.67
             |                     
            
                29.85
             |                                 
            
                104,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2018
             | 
            
                +0.10 / +0.18%
             |             
            
                55.50
             |           
            
                57.00
             |               
            
                53.00
             |                           
            
                56.00
             | 
            
                54.78
             |                     
            
                29.90
             |                                 
            
                40,360
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2018
             | 
            
                -2.10 / -3.62%
             |             
            
                59.00
             |           
            
                59.00
             |               
            
                54.00
             |                           
            
                55.90
             | 
            
                55.02
             |                     
            
                29.85
             |                                 
            
                165,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2018
             | 
            
                -32.00 / -35.56%
             |             
            
                59.40
             |           
            
                61.90
             |               
            
                58.00
             |                           
            
                58.00
             | 
            
                59.30
             |                     
            
                30.97
             |                                 
            
                44,470
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2018
             | 
            
                -2.50 / -2.70%
             |             
            
                93.50
             |           
            
                93.50
             |               
            
                90.00
             |                           
            
                90.00
             | 
            
                90.95
             |                     
            
                31.68
             |                                 
            
                80,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2018
             | 
            
                +2.50 / +2.78%
             |             
            
                91.10
             |           
            
                93.00
             |               
            
                90.00
             |                           
            
                92.50
             | 
            
                91.25
             |                     
            
                32.56
             |                                 
            
                171,720
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2018
             | 
            
                0.00 / 0.00%
             |             
            
                90.00
             |           
            
                90.50
             |               
            
                89.40
             |                           
            
                90.00
             | 
            
                89.86
             |                     
            
                31.68
             |                                 
            
                36,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2018
             | 
            
                -2.00 / -2.17%
             |             
            
                92.10
             |           
            
                93.00
             |               
            
                89.10
             |                           
            
                90.00
             | 
            
                90.84
             |                     
            
                31.68
             |                                 
            
                59,960
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2018
             | 
            
                0.00 / 0.00%
             |             
            
                91.50
             |           
            
                93.00
             |               
            
                90.00
             |                           
            
                92.00
             | 
            
                91.84
             |                     
            
                32.39
             |                                 
            
                32,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2018
             | 
            
                -5.40 / -5.54%
             |             
            
                95.00
             |           
            
                97.00
             |               
            
                92.00
             |                           
            
                92.00
             | 
            
                93.62
             |                     
            
                32.39
             |                                 
            
                18,350
             |            
            
                 
             |                                       
         
    
        
            | 
                6/18/2018
             | 
            
                -0.70 / -0.71%
             |             
            
                98.20
             |           
            
                98.20
             |               
            
                93.50
             |                           
            
                97.40
             | 
            
                95.68
             |                     
            
                34.29
             |                                 
            
                66,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2018
             | 
            
                -0.60 / -0.61%
             |             
            
                98.10
             |           
            
                98.10
             |               
            
                97.70
             |                           
            
                98.10
             | 
            
                98.03
             |                     
            
                34.54
             |                                 
            
                17,250
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                99.00
             |           
            
                99.80
             |               
            
                97.20
             |                           
            
                98.70
             | 
            
                98.54
             |                     
            
                34.75
             |                                 
            
                37,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2018
             | 
            
                +0.20 / +0.20%
             |             
            
                99.90
             |           
            
                99.90
             |               
            
                98.70
             |                           
            
                98.70
             | 
            
                98.85
             |                     
            
                34.75
             |                                 
            
                15,710
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2018
             | 
            
                -1.50 / -1.50%
             |             
            
                101.00
             |           
            
                101.00
             |               
            
                97.00
             |                           
            
                98.50
             | 
            
                98.33
             |                     
            
                34.68
             |                                 
            
                48,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                99.00
             |           
            
                100.00
             |               
            
                98.00
             |                           
            
                100.00
             | 
            
                98.93
             |                     
            
                35.21
             |                                 
            
                36,430
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2018
             | 
            
                -0.90 / -0.89%
             |             
            
                99.00
             |           
            
                101.00
             |               
            
                99.00
             |                           
            
                100.00
             | 
            
                99.91
             |                     
            
                35.21
             |                                 
            
                10,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2018
             | 
            
                +2.40 / +2.44%
             |             
            
                99.00
             |           
            
                101.00
             |               
            
                98.50
             |                           
            
                100.90
             | 
            
                100.00
             |                     
            
                35.52
             |                                 
            
                39,430
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2018
             | 
            
                +2.50 / +2.60%
             |             
            
                97.00
             |           
            
                98.50
             |               
            
                96.00
             |                           
            
                98.50
             | 
            
                96.96
             |                     
            
                34.68
             |                                 
            
                39,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2018
             | 
            
                +1.40 / +1.48%
             |             
            
                94.80
             |           
            
                97.90
             |               
            
                94.80
             |                           
            
                96.00
             | 
            
                96.08
             |                     
            
                33.80
             |                                 
            
                16,820
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2018
             | 
            
                +1.60 / +1.72%
             |             
            
                93.00
             |           
            
                95.00
             |               
            
                93.00
             |                           
            
                94.60
             | 
            
                94.23
             |                     
            
                33.30
             |                                 
            
                53,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2018
             | 
            
                +0.60 / +0.65%
             |             
            
                92.90
             |           
            
                94.00
             |               
            
                92.00
             |                           
            
                93.00
             | 
            
                92.84
             |                     
            
                32.74
             |                                 
            
                23,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2018
             | 
            
                0.00 / 0.00%
             |             
            
                89.10
             |           
            
                92.40
             |               
            
                89.10
             |                           
            
                92.40
             | 
            
                91.82
             |                     
            
                32.53
             |                                 
            
                9,540
             |  
            
                 
             |                                                              
             
    
         
    
    
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