| 
                 
                    Closing price on 10/18/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.40 | 
                 
                
                    | High | 
                    21.10 | 
                 
                
                    | Low | 
                    20.40 | 
                     
                
                    | Volume | 
                    5,460 | 
                                 
                
                    | Split-adjusted Price | 
                    17.42 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NBB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/18/2019
             | 
            
                +0.25 / +1.20%
             |             
            
                20.40
             |           
            
                21.10
             |               
            
                20.40
             |                           
            
                21.00
             | 
            
                20.70
             |                     
            
                17.42
             |                                 
            
                5,460
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2019
             | 
            
                +0.05 / +0.24%
             |             
            
                20.55
             |           
            
                21.25
             |               
            
                20.55
             |                           
            
                20.75
             | 
            
                21.02
             |                     
            
                17.22
             |                                 
            
                49,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/16/2019
             | 
            
                -0.10 / -0.48%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                20.60
             |                           
            
                20.70
             | 
            
                20.71
             |                     
            
                17.17
             |                                 
            
                11,060
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2019
             | 
            
                -0.70 / -3.26%
             |             
            
                21.35
             |           
            
                21.45
             |               
            
                20.80
             |                           
            
                20.80
             | 
            
                21.12
             |                     
            
                17.26
             |                                 
            
                10,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2019
             | 
            
                -0.10 / -0.46%
             |             
            
                21.50
             |           
            
                21.50
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.50
             |                     
            
                17.84
             |                                 
            
                5,530
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2019
             | 
            
                +0.20 / +0.93%
             |             
            
                20.75
             |           
            
                21.60
             |               
            
                20.75
             |                           
            
                21.60
             | 
            
                21.58
             |                     
            
                17.92
             |                                 
            
                10,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2019
             | 
            
                0.00 / 0.00%
             |             
            
                21.40
             |           
            
                21.50
             |               
            
                21.00
             |                           
            
                21.40
             | 
            
                21.48
             |                     
            
                17.75
             |                                 
            
                228,350
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2019
             | 
            
                -0.10 / -0.47%
             |             
            
                21.60
             |           
            
                21.60
             |               
            
                21.40
             |                           
            
                21.40
             | 
            
                21.48
             |                     
            
                17.75
             |                                 
            
                59,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2019
             | 
            
                0.00 / 0.00%
             |             
            
                21.00
             |           
            
                21.50
             |               
            
                21.00
             |                           
            
                21.50
             | 
            
                21.25
             |                     
            
                17.84
             |                                 
            
                11,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2019
             | 
            
                +0.20 / +0.94%
             |             
            
                21.30
             |           
            
                21.50
             |               
            
                21.25
             |                           
            
                21.50
             | 
            
                21.49
             |                     
            
                17.84
             |                                 
            
                107,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2019
             | 
            
                +0.30 / +1.43%
             |             
            
                20.70
             |           
            
                21.40
             |               
            
                20.60
             |                           
            
                21.30
             | 
            
                21.25
             |                     
            
                17.67
             |                                 
            
                53,750
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2019
             | 
            
                0.00 / 0.00%
             |             
            
                20.95
             |           
            
                21.00
             |               
            
                20.60
             |                           
            
                21.00
             | 
            
                20.93
             |                     
            
                17.42
             |                                 
            
                12,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2019
             | 
            
                -0.20 / -0.94%
             |             
            
                21.65
             |           
            
                21.80
             |               
            
                20.60
             |                           
            
                21.00
             | 
            
                21.10
             |                     
            
                17.42
             |                                 
            
                208,120
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2019
             | 
            
                +0.80 / +3.92%
             |             
            
                20.35
             |           
            
                21.40
             |               
            
                20.35
             |                           
            
                21.20
             | 
            
                20.88
             |                     
            
                17.59
             |                                 
            
                210,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2019
             | 
            
                -0.60 / -2.86%
             |             
            
                21.00
             |           
            
                21.20
             |               
            
                20.40
             |                           
            
                20.40
             | 
            
                20.65
             |                     
            
                16.92
             |                                 
            
                44,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2019
             | 
            
                0.00 / 0.00%
             |             
            
                21.20
             |           
            
                21.20
             |               
            
                20.30
             |                           
            
                21.00
             | 
            
                20.98
             |                     
            
                17.42
             |                                 
            
                36,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2019
             | 
            
                -0.20 / -0.94%
             |             
            
                21.00
             |           
            
                21.30
             |               
            
                20.50
             |                           
            
                21.00
             | 
            
                21.08
             |                     
            
                17.42
             |                                 
            
                82,040
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2019
             | 
            
                -0.20 / -0.93%
             |             
            
                20.80
             |           
            
                21.35
             |               
            
                20.65
             |                           
            
                21.20
             | 
            
                21.14
             |                     
            
                17.59
             |                                 
            
                16,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2019
             | 
            
                +0.20 / +0.94%
             |             
            
                20.85
             |           
            
                21.50
             |               
            
                20.70
             |                           
            
                21.40
             | 
            
                21.06
             |                     
            
                17.75
             |                                 
            
                210,240
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2019
             | 
            
                -0.50 / -2.30%
             |             
            
                21.70
             |           
            
                21.85
             |               
            
                21.20
             |                           
            
                21.20
             | 
            
                21.75
             |                     
            
                17.59
             |                                 
            
                342,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2019
             | 
            
                +0.85 / +4.08%
             |             
            
                21.00
             |           
            
                21.95
             |               
            
                20.50
             |                           
            
                21.70
             | 
            
                21.64
             |                     
            
                18.00
             |                                 
            
                656,660
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2019
             | 
            
                +1.35 / +6.92%
             |             
            
                19.15
             |           
            
                20.85
             |               
            
                19.00
             |                           
            
                20.85
             | 
            
                20.03
             |                     
            
                17.30
             |                                 
            
                664,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2019
             | 
            
                +0.50 / +2.63%
             |             
            
                19.00
             |           
            
                19.90
             |               
            
                18.60
             |                           
            
                19.50
             | 
            
                19.31
             |                     
            
                16.18
             |                                 
            
                94,790
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2019
             | 
            
                -0.25 / -1.30%
             |             
            
                19.35
             |           
            
                19.35
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.01
             |                     
            
                15.76
             |                                 
            
                81,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2019
             | 
            
                +0.25 / +1.32%
             |             
            
                19.20
             |           
            
                19.25
             |               
            
                18.65
             |                           
            
                19.25
             | 
            
                19.00
             |                     
            
                15.97
             |                                 
            
                28,060
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2019
             | 
            
                -0.50 / -2.56%
             |             
            
                19.40
             |           
            
                19.70
             |               
            
                19.00
             |                           
            
                19.00
             | 
            
                19.07
             |                     
            
                15.76
             |                                 
            
                18,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2019
             | 
            
                +0.15 / +0.78%
             |             
            
                19.40
             |           
            
                19.50
             |               
            
                19.10
             |                           
            
                19.50
             | 
            
                19.33
             |                     
            
                16.18
             |                                 
            
                24,470
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2019
             | 
            
                -0.25 / -1.28%
             |             
            
                20.00
             |           
            
                20.00
             |               
            
                18.50
             |                           
            
                19.35
             | 
            
                18.77
             |                     
            
                16.05
             |                                 
            
                586,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2019
             | 
            
                +0.10 / +0.51%
             |             
            
                19.60
             |           
            
                19.70
             |               
            
                19.00
             |                           
            
                19.60
             | 
            
                19.20
             |                     
            
                16.26
             |                                 
            
                212,380
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2019
             | 
            
                -0.20 / -1.02%
             |             
            
                19.70
             |           
            
                19.70
             |               
            
                19.30
             |                           
            
                19.50
             | 
            
                19.56
             |                     
            
                16.18
             |                                 
            
                30,120
             |  
            
                 
             |                                                              
             
    
         
    
    
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