| 
                 
                    Closing price on 2/9/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    118.00 | 
                 
                
                    | High | 
                    125.90 | 
                 
                
                    | Low | 
                    118.00 | 
                     
                
                    | Volume | 
                    117,150 | 
                                 
                
                    | Split-adjusted Price | 
                    39.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/9/2018
             | 
            
                +3.40 / +2.78%
             |             
            
                118.00
             |           
            
                125.90
             |               
            
                118.00
             |                           
            
                125.90
             | 
            
                121.85
             |                     
            
                39.00
             |                                 
            
                117,150
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2018
             | 
            
                -1.00 / -0.81%
             |             
            
                120.70
             |           
            
                126.00
             |               
            
                120.70
             |                           
            
                122.50
             | 
            
                123.19
             |                     
            
                37.94
             |                                 
            
                80,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/7/2018
             | 
            
                +2.50 / +2.07%
             |             
            
                126.00
             |           
            
                126.00
             |               
            
                122.10
             |                           
            
                123.50
             | 
            
                123.43
             |                     
            
                38.25
             |                                 
            
                172,760
             |            
            
                 
             |                                       
         
    
        
            | 
                2/6/2018
             | 
            
                -6.00 / -4.72%
             |             
            
                123.00
             |           
            
                126.00
             |               
            
                118.50
             |                           
            
                121.00
             | 
            
                120.59
             |                     
            
                37.48
             |                                 
            
                266,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2018
             | 
            
                -2.00 / -1.55%
             |             
            
                126.00
             |           
            
                130.00
             |               
            
                126.00
             |                           
            
                127.00
             | 
            
                127.01
             |                     
            
                39.34
             |                                 
            
                160,950
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2018
             | 
            
                +1.80 / +1.42%
             |             
            
                127.50
             |           
            
                129.00
             |               
            
                126.00
             |                           
            
                129.00
             | 
            
                127.25
             |                     
            
                39.96
             |                                 
            
                155,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2018
             | 
            
                -0.10 / -0.08%
             |             
            
                128.00
             |           
            
                129.90
             |               
            
                127.10
             |                           
            
                127.20
             | 
            
                127.56
             |                     
            
                39.40
             |                                 
            
                155,810
             |            
            
                 
             |                                       
         
    
        
            | 
                1/31/2018
             | 
            
                -1.90 / -1.47%
             |             
            
                132.00
             |           
            
                132.00
             |               
            
                127.00
             |                           
            
                127.30
             | 
            
                128.54
             |                     
            
                39.43
             |                                 
            
                264,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2018
             | 
            
                +1.20 / +0.94%
             |             
            
                126.20
             |           
            
                131.00
             |               
            
                126.20
             |                           
            
                129.20
             | 
            
                128.23
             |                     
            
                40.02
             |                                 
            
                157,910
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2018
             | 
            
                -2.00 / -1.54%
             |             
            
                132.00
             |           
            
                132.00
             |               
            
                127.00
             |                           
            
                128.00
             | 
            
                127.70
             |                     
            
                39.65
             |                                 
            
                130,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2018
             | 
            
                -2.70 / -2.03%
             |             
            
                133.00
             |           
            
                133.00
             |               
            
                128.50
             |                           
            
                130.00
             | 
            
                129.47
             |                     
            
                40.27
             |                                 
            
                108,560
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2018
             | 
            
                -5.30 / -3.84%
             |             
            
                137.00
             |           
            
                137.00
             |               
            
                132.00
             |                           
            
                132.70
             | 
            
                133.10
             |                     
            
                41.10
             |                                 
            
                276,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2018
             | 
            
                -1.90 / -1.36%
             |             
            
                140.00
             |           
            
                140.00
             |               
            
                136.00
             |                           
            
                138.00
             | 
            
                138.21
             |                     
            
                42.74
             |                                 
            
                131,170
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2018
             | 
            
                +2.40 / +1.75%
             |             
            
                137.30
             |           
            
                141.00
             |               
            
                137.30
             |                           
            
                139.90
             | 
            
                139.66
             |                     
            
                43.33
             |                                 
            
                163,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2018
             | 
            
                0.00 / 0.00%
             |             
            
                137.00
             |           
            
                138.00
             |               
            
                136.50
             |                           
            
                137.50
             | 
            
                136.98
             |                     
            
                42.59
             |                                 
            
                99,720
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2018
             | 
            
                -2.50 / -1.79%
             |             
            
                140.40
             |           
            
                140.70
             |               
            
                137.50
             |                           
            
                137.50
             | 
            
                139.30
             |                     
            
                42.59
             |                                 
            
                121,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2018
             | 
            
                +1.80 / +1.30%
             |             
            
                138.00
             |           
            
                141.00
             |               
            
                137.60
             |                           
            
                140.00
             | 
            
                139.44
             |                     
            
                43.36
             |                                 
            
                112,740
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2018
             | 
            
                +1.20 / +0.88%
             |             
            
                137.00
             |           
            
                139.00
             |               
            
                136.50
             |                           
            
                138.20
             | 
            
                137.85
             |                     
            
                42.81
             |                                 
            
                81,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2018
             | 
            
                -3.00 / -2.14%
             |             
            
                139.00
             |           
            
                139.80
             |               
            
                137.00
             |                           
            
                137.00
             | 
            
                138.25
             |                     
            
                42.43
             |                                 
            
                108,360
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                140.00
             |           
            
                140.50
             |               
            
                139.00
             |                           
            
                140.00
             | 
            
                139.49
             |                     
            
                43.36
             |                                 
            
                90,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2018
             | 
            
                +2.00 / +1.45%
             |             
            
                138.00
             |           
            
                141.50
             |               
            
                138.00
             |                           
            
                140.00
             | 
            
                140.04
             |                     
            
                43.36
             |                                 
            
                166,690
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2018
             | 
            
                -1.00 / -0.72%
             |             
            
                139.20
             |           
            
                139.50
             |               
            
                137.50
             |                           
            
                138.00
             | 
            
                138.41
             |                     
            
                42.74
             |                                 
            
                106,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2018
             | 
            
                +5.00 / +3.73%
             |             
            
                134.00
             |           
            
                140.00
             |               
            
                133.00
             |                           
            
                139.00
             | 
            
                137.81
             |                     
            
                43.05
             |                                 
            
                294,890
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2018
             | 
            
                -2.00 / -1.47%
             |             
            
                136.50
             |           
            
                137.00
             |               
            
                134.00
             |                           
            
                134.00
             | 
            
                135.47
             |                     
            
                41.51
             |                                 
            
                107,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2018
             | 
            
                +4.90 / +3.74%
             |             
            
                130.90
             |           
            
                136.10
             |               
            
                130.00
             |                           
            
                136.00
             | 
            
                134.30
             |                     
            
                42.12
             |                                 
            
                180,570
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2018
             | 
            
                -0.40 / -0.30%
             |             
            
                131.50
             |           
            
                132.00
             |               
            
                131.00
             |                           
            
                131.10
             | 
            
                131.23
             |                     
            
                40.61
             |                                 
            
                83,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2018
             | 
            
                0.00 / 0.00%
             |             
            
                131.80
             |           
            
                131.80
             |               
            
                130.70
             |                           
            
                131.50
             | 
            
                131.24
             |                     
            
                40.73
             |                                 
            
                33,130
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                130.70
             |           
            
                131.50
             |               
            
                130.60
             |                           
            
                131.50
             | 
            
                130.97
             |                     
            
                40.73
             |                                 
            
                22,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2017
             | 
            
                -0.30 / -0.23%
             |             
            
                130.60
             |           
            
                131.70
             |               
            
                130.20
             |                           
            
                131.50
             | 
            
                130.95
             |                     
            
                40.73
             |                                 
            
                59,870
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                131.60
             |           
            
                132.00
             |               
            
                130.50
             |                           
            
                131.80
             | 
            
                131.20
             |                     
            
                40.82
             |                                 
            
                51,860
             |  
            
                 
             |                                                              
             
    
         
    
    
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