| 
                 
                    Closing price on 11/28/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    61.70 | 
                 
                
                    | High | 
                    63.50 | 
                 
                
                    | Low | 
                    61.70 | 
                     
                
                    | Volume | 
                    62,130 | 
                                 
                
                    | Split-adjusted Price | 
                    33.86 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/28/2018
             | 
            
                +1.10 / +1.77%
             |             
            
                61.70
             |           
            
                63.50
             |               
            
                61.70
             |                           
            
                63.40
             | 
            
                62.47
             |                     
            
                33.86
             |                                 
            
                62,130
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2018
             | 
            
                -0.70 / -1.11%
             |             
            
                63.00
             |           
            
                63.80
             |               
            
                61.10
             |                           
            
                62.30
             | 
            
                62.09
             |                     
            
                33.27
             |                                 
            
                126,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2018
             | 
            
                0.00 / 0.00%
             |             
            
                63.40
             |           
            
                63.40
             |               
            
                62.50
             |                           
            
                63.00
             | 
            
                62.79
             |                     
            
                33.64
             |                                 
            
                25,480
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2018
             | 
            
                -1.10 / -1.72%
             |             
            
                64.70
             |           
            
                64.70
             |               
            
                63.00
             |                           
            
                63.00
             | 
            
                63.51
             |                     
            
                33.64
             |                                 
            
                88,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2018
             | 
            
                +0.70 / +1.10%
             |             
            
                63.80
             |           
            
                65.80
             |               
            
                63.80
             |                           
            
                64.10
             | 
            
                64.62
             |                     
            
                34.23
             |                                 
            
                229,210
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                63.00
             |           
            
                63.90
             |               
            
                62.80
             |                           
            
                63.40
             | 
            
                63.37
             |                     
            
                33.86
             |                                 
            
                99,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2018
             | 
            
                +0.80 / +1.28%
             |             
            
                62.00
             |           
            
                64.50
             |               
            
                62.00
             |                           
            
                63.30
             | 
            
                63.60
             |                     
            
                33.80
             |                                 
            
                223,270
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2018
             | 
            
                -0.20 / -0.32%
             |             
            
                63.00
             |           
            
                63.30
             |               
            
                62.30
             |                           
            
                62.50
             | 
            
                62.62
             |                     
            
                33.38
             |                                 
            
                61,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2018
             | 
            
                -0.30 / -0.48%
             |             
            
                63.90
             |           
            
                63.90
             |               
            
                62.70
             |                           
            
                62.70
             | 
            
                63.18
             |                     
            
                33.48
             |                                 
            
                34,220
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2018
             | 
            
                +3.00 / +5.00%
             |             
            
                60.00
             |           
            
                63.60
             |               
            
                59.70
             |                           
            
                63.00
             | 
            
                62.03
             |                     
            
                33.64
             |                                 
            
                172,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                60.00
             |           
            
                60.50
             |               
            
                59.50
             |                           
            
                60.00
             | 
            
                59.98
             |                     
            
                32.04
             |                                 
            
                46,980
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2018
             | 
            
                -0.40 / -0.66%
             |             
            
                60.00
             |           
            
                60.70
             |               
            
                59.90
             |                           
            
                60.00
             | 
            
                60.22
             |                     
            
                32.04
             |                                 
            
                71,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2018
             | 
            
                +0.70 / +1.17%
             |             
            
                60.60
             |           
            
                60.60
             |               
            
                59.40
             |                           
            
                60.40
             | 
            
                59.97
             |                     
            
                32.25
             |                                 
            
                28,280
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2018
             | 
            
                -1.30 / -2.13%
             |             
            
                60.70
             |           
            
                60.90
             |               
            
                59.70
             |                           
            
                59.70
             | 
            
                60.08
             |                     
            
                31.88
             |                                 
            
                93,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2018
             | 
            
                +0.70 / +1.16%
             |             
            
                61.00
             |           
            
                61.50
             |               
            
                60.50
             |                           
            
                61.00
             | 
            
                61.03
             |                     
            
                32.57
             |                                 
            
                63,530
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2018
             | 
            
                -0.30 / -0.50%
             |             
            
                60.30
             |           
            
                60.80
             |               
            
                60.00
             |                           
            
                60.30
             | 
            
                60.24
             |                     
            
                32.20
             |                                 
            
                132,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2018
             | 
            
                -0.40 / -0.66%
             |             
            
                60.00
             |           
            
                61.40
             |               
            
                60.00
             |                           
            
                60.60
             | 
            
                60.88
             |                     
            
                32.36
             |                                 
            
                32,850
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2018
             | 
            
                +0.20 / +0.33%
             |             
            
                60.80
             |           
            
                61.60
             |               
            
                60.50
             |                           
            
                61.00
             | 
            
                60.91
             |                     
            
                32.57
             |                                 
            
                39,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2018
             | 
            
                +1.30 / +2.18%
             |             
            
                60.50
             |           
            
                60.90
             |               
            
                59.50
             |                           
            
                60.80
             | 
            
                60.18
             |                     
            
                32.47
             |                                 
            
                27,250
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2018
             | 
            
                -1.50 / -2.46%
             |             
            
                60.70
             |           
            
                61.80
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                60.43
             |                     
            
                31.77
             |                                 
            
                61,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2018
             | 
            
                +1.10 / +1.84%
             |             
            
                61.00
             |           
            
                61.00
             |               
            
                60.20
             |                           
            
                61.00
             | 
            
                60.64
             |                     
            
                32.57
             |                                 
            
                55,490
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2018
             | 
            
                +0.40 / +0.67%
             |             
            
                60.00
             |           
            
                60.30
             |               
            
                59.90
             |                           
            
                59.90
             | 
            
                60.04
             |                     
            
                31.99
             |                                 
            
                24,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2018
             | 
            
                0.00 / 0.00%
             |             
            
                59.40
             |           
            
                60.50
             |               
            
                59.10
             |                           
            
                59.50
             | 
            
                59.49
             |                     
            
                31.77
             |                                 
            
                153,210
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2018
             | 
            
                -0.90 / -1.49%
             |             
            
                61.00
             |           
            
                63.00
             |               
            
                59.50
             |                           
            
                59.50
             | 
            
                60.22
             |                     
            
                31.77
             |                                 
            
                216,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2018
             | 
            
                -1.60 / -2.58%
             |             
            
                61.50
             |           
            
                61.50
             |               
            
                59.00
             |                           
            
                60.40
             | 
            
                60.21
             |                     
            
                32.25
             |                                 
            
                131,080
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2018
             | 
            
                -1.40 / -2.21%
             |             
            
                62.50
             |           
            
                63.40
             |               
            
                62.00
             |                           
            
                62.00
             | 
            
                62.52
             |                     
            
                33.11
             |                                 
            
                35,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2018
             | 
            
                +0.90 / +1.44%
             |             
            
                62.50
             |           
            
                63.90
             |               
            
                61.60
             |                           
            
                63.40
             | 
            
                62.42
             |                     
            
                33.86
             |                                 
            
                124,480
             |            
            
                 
             |                                       
         
    
        
            | 
                10/22/2018
             | 
            
                -1.50 / -2.34%
             |             
            
                64.00
             |           
            
                65.00
             |               
            
                62.50
             |                           
            
                62.50
             | 
            
                63.32
             |                     
            
                33.38
             |                                 
            
                87,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2018
             | 
            
                0.00 / 0.00%
             |             
            
                63.00
             |           
            
                64.10
             |               
            
                62.70
             |                           
            
                64.00
             | 
            
                63.46
             |                     
            
                34.18
             |                                 
            
                77,860
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2018
             | 
            
                -1.50 / -2.29%
             |             
            
                65.10
             |           
            
                65.50
             |               
            
                64.00
             |                           
            
                64.00
             | 
            
                64.93
             |                     
            
                34.18
             |                                 
            
                71,480
             |  
            
                 
             |                                                              
             
    
         
    
    
 |