| 
                 
                    Closing price on 10/10/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    27.75 | 
                 
                
                    | High | 
                    28.45 | 
                 
                
                    | Low | 
                    27.70 | 
                     
                
                    | Volume | 
                    741,710 | 
                                 
                
                    | Split-adjusted Price | 
                    13.79 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NT2 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/10/2017
             | 
            
                +0.50 / +1.80%
             |             
            
                27.75
             |           
            
                28.45
             |               
            
                27.70
             |                           
            
                28.25
             | 
            
                28.19
             |                     
            
                13.79
             |                                 
            
                741,710
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2017
             | 
            
                -0.55 / -1.94%
             |             
            
                27.80
             |           
            
                28.00
             |               
            
                27.70
             |                           
            
                27.75
             | 
            
                27.85
             |                     
            
                13.54
             |                                 
            
                538,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2017
             | 
            
                +0.20 / +0.71%
             |             
            
                28.20
             |           
            
                28.85
             |               
            
                27.90
             |                           
            
                28.30
             | 
            
                28.38
             |                     
            
                13.32
             |                                 
            
                670,260
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2017
             | 
            
                +1.30 / +4.85%
             |             
            
                27.00
             |           
            
                28.20
             |               
            
                27.00
             |                           
            
                28.10
             | 
            
                27.94
             |                     
            
                13.23
             |                                 
            
                1,179,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2017
             | 
            
                +0.40 / +1.52%
             |             
            
                26.55
             |           
            
                26.80
             |               
            
                26.40
             |                           
            
                26.80
             | 
            
                26.52
             |                     
            
                12.62
             |                                 
            
                447,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2017
             | 
            
                -0.20 / -0.75%
             |             
            
                26.60
             |           
            
                26.60
             |               
            
                26.25
             |                           
            
                26.40
             | 
            
                26.37
             |                     
            
                12.43
             |                                 
            
                469,032
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2017
             | 
            
                +0.05 / +0.19%
             |             
            
                26.60
             |           
            
                26.80
             |               
            
                26.40
             |                           
            
                26.60
             | 
            
                26.53
             |                     
            
                12.52
             |                                 
            
                217,652
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2017
             | 
            
                +0.05 / +0.19%
             |             
            
                26.30
             |           
            
                26.70
             |               
            
                26.30
             |                           
            
                26.55
             | 
            
                26.52
             |                     
            
                12.50
             |                                 
            
                158,492
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2017
             | 
            
                -0.15 / -0.56%
             |             
            
                26.65
             |           
            
                26.70
             |               
            
                26.30
             |                           
            
                26.50
             | 
            
                26.60
             |                     
            
                12.48
             |                                 
            
                217,352
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2017
             | 
            
                +0.45 / +1.72%
             |             
            
                26.30
             |           
            
                26.65
             |               
            
                26.10
             |                           
            
                26.65
             | 
            
                26.46
             |                     
            
                12.55
             |                                 
            
                350,622
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2017
             | 
            
                +0.30 / +1.16%
             |             
            
                26.10
             |           
            
                26.20
             |               
            
                25.80
             |                           
            
                26.20
             | 
            
                26.01
             |                     
            
                12.34
             |                                 
            
                121,582
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2017
             | 
            
                0.00 / 0.00%
             |             
            
                25.90
             |           
            
                25.95
             |               
            
                25.85
             |                           
            
                25.90
             | 
            
                25.90
             |                     
            
                12.19
             |                                 
            
                145,932
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2017
             | 
            
                -0.20 / -0.77%
             |             
            
                26.10
             |           
            
                26.25
             |               
            
                25.80
             |                           
            
                25.90
             | 
            
                25.97
             |                     
            
                12.19
             |                                 
            
                326,372
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2017
             | 
            
                +0.65 / +2.55%
             |             
            
                25.50
             |           
            
                26.10
             |               
            
                25.45
             |                           
            
                26.10
             | 
            
                25.73
             |                     
            
                12.29
             |                                 
            
                233,582
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2017
             | 
            
                +0.25 / +0.99%
             |             
            
                25.20
             |           
            
                25.45
             |               
            
                25.15
             |                           
            
                25.45
             | 
            
                25.33
             |                     
            
                11.98
             |                                 
            
                462,592
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2017
             | 
            
                -0.10 / -0.40%
             |             
            
                25.30
             |           
            
                25.30
             |               
            
                25.00
             |                           
            
                25.20
             | 
            
                25.17
             |                     
            
                11.86
             |                                 
            
                211,732
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2017
             | 
            
                -0.20 / -0.78%
             |             
            
                25.50
             |           
            
                25.50
             |               
            
                25.25
             |                           
            
                25.30
             | 
            
                25.34
             |                     
            
                11.91
             |                                 
            
                147,170
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2017
             | 
            
                +0.45 / +1.80%
             |             
            
                25.05
             |           
            
                25.50
             |               
            
                25.00
             |                           
            
                25.50
             | 
            
                25.37
             |                     
            
                12.01
             |                                 
            
                461,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                25.00
             |           
            
                25.20
             |               
            
                24.90
             |                           
            
                25.05
             | 
            
                25.05
             |                     
            
                11.79
             |                                 
            
                521,040
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2017
             | 
            
                +0.05 / +0.20%
             |             
            
                25.20
             |           
            
                25.20
             |               
            
                24.90
             |                           
            
                25.05
             | 
            
                24.99
             |                     
            
                11.79
             |                                 
            
                568,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2017
             | 
            
                +0.40 / +1.63%
             |             
            
                24.90
             |           
            
                25.10
             |               
            
                24.70
             |                           
            
                25.00
             | 
            
                24.99
             |                     
            
                11.77
             |                                 
            
                360,680
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2017
             | 
            
                -0.70 / -2.77%
             |             
            
                25.10
             |           
            
                25.30
             |               
            
                24.50
             |                           
            
                24.60
             | 
            
                24.68
             |                     
            
                11.58
             |                                 
            
                725,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2017
             | 
            
                -0.45 / -1.75%
             |             
            
                25.75
             |           
            
                25.75
             |               
            
                25.30
             |                           
            
                25.30
             | 
            
                25.53
             |                     
            
                11.91
             |                                 
            
                509,470
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2017
             | 
            
                -0.05 / -0.19%
             |             
            
                25.50
             |           
            
                26.00
             |               
            
                25.50
             |                           
            
                25.75
             | 
            
                25.76
             |                     
            
                12.12
             |                                 
            
                407,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2017
             | 
            
                0.00 / 0.00%
             |             
            
                25.80
             |           
            
                25.90
             |               
            
                25.75
             |                           
            
                25.80
             | 
            
                25.80
             |                     
            
                12.15
             |                                 
            
                442,470
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2017
             | 
            
                +0.60 / +2.38%
             |             
            
                25.50
             |           
            
                26.10
             |               
            
                25.35
             |                           
            
                25.80
             | 
            
                25.80
             |                     
            
                12.15
             |                                 
            
                527,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2017
             | 
            
                -0.70 / -2.70%
             |             
            
                25.90
             |           
            
                25.90
             |               
            
                25.00
             |                           
            
                25.20
             | 
            
                25.38
             |                     
            
                11.86
             |                                 
            
                907,910
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2017
             | 
            
                -0.10 / -0.38%
             |             
            
                26.00
             |           
            
                26.05
             |               
            
                25.90
             |                           
            
                25.90
             | 
            
                25.99
             |                     
            
                12.19
             |                                 
            
                403,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2017
             | 
            
                -0.20 / -0.76%
             |             
            
                26.20
             |           
            
                26.30
             |               
            
                25.90
             |                           
            
                26.00
             | 
            
                26.07
             |                     
            
                12.24
             |                                 
            
                639,760
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2017
             | 
            
                -0.20 / -0.76%
             |             
            
                26.40
             |           
            
                26.50
             |               
            
                26.20
             |                           
            
                26.20
             | 
            
                26.35
             |                     
            
                12.34
             |                                 
            
                538,430
             |  
            
                 
             |                                                              
             
    
         
    
    
 |