| 
                 
                    Closing price on 11/13/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    60.00 | 
                 
                
                    | High | 
                    60.70 | 
                 
                
                    | Low | 
                    59.90 | 
                     
                
                    | Volume | 
                    71,160 | 
                                 
                
                    | Split-adjusted Price | 
                    32.04 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2018
             | 
            
                -0.40 / -0.61%
             |             
            
                67.00
             |           
            
                67.00
             |               
            
                65.50
             |                           
            
                65.50
             | 
            
                66.16
             |                     
            
                34.98
             |                                 
            
                69,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/16/2018
             | 
            
                +1.60 / +2.49%
             |             
            
                64.90
             |           
            
                66.00
             |               
            
                64.30
             |                           
            
                65.90
             | 
            
                65.17
             |                     
            
                35.19
             |                                 
            
                33,850
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2018
             | 
            
                -2.70 / -4.03%
             |             
            
                65.70
             |           
            
                66.90
             |               
            
                64.00
             |                           
            
                64.30
             | 
            
                65.09
             |                     
            
                34.34
             |                                 
            
                133,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/12/2018
             | 
            
                +1.50 / +2.29%
             |             
            
                64.20
             |           
            
                67.00
             |               
            
                64.00
             |                           
            
                67.00
             | 
            
                65.30
             |                     
            
                35.78
             |                                 
            
                106,250
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2018
             | 
            
                -2.80 / -4.10%
             |             
            
                66.20
             |           
            
                67.50
             |               
            
                64.00
             |                           
            
                65.50
             | 
            
                65.46
             |                     
            
                34.98
             |                                 
            
                359,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2018
             | 
            
                +0.30 / +0.44%
             |             
            
                68.40
             |           
            
                69.40
             |               
            
                67.70
             |                           
            
                68.30
             | 
            
                68.37
             |                     
            
                36.47
             |                                 
            
                306,140
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2018
             | 
            
                +0.60 / +0.89%
             |             
            
                67.00
             |           
            
                68.50
             |               
            
                66.30
             |                           
            
                68.00
             | 
            
                67.09
             |                     
            
                36.31
             |                                 
            
                209,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2018
             | 
            
                -0.50 / -0.74%
             |             
            
                67.90
             |           
            
                68.00
             |               
            
                66.00
             |                           
            
                67.40
             | 
            
                67.25
             |                     
            
                35.99
             |                                 
            
                175,240
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2018
             | 
            
                +3.90 / +6.09%
             |             
            
                64.80
             |           
            
                67.90
             |               
            
                64.00
             |                           
            
                67.90
             | 
            
                66.00
             |                     
            
                36.26
             |                                 
            
                569,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2018
             | 
            
                +1.80 / +2.89%
             |             
            
                61.80
             |           
            
                65.50
             |               
            
                61.00
             |                           
            
                64.00
             | 
            
                64.49
             |                     
            
                34.18
             |                                 
            
                450,410
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2018
             | 
            
                -0.30 / -0.48%
             |             
            
                63.00
             |           
            
                63.50
             |               
            
                62.20
             |                           
            
                62.20
             | 
            
                62.53
             |                     
            
                33.22
             |                                 
            
                64,210
             |  
            
                 
             |                                                              
             
    
         
    
    
 |