| 
                 
                    Closing price on 12/5/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.70 | 
                 
                
                    | High | 
                    10.70 | 
                 
                
                    | Low | 
                    10.70 | 
                     
                
                    | Volume | 
                    500 | 
                                 
                
                    | Split-adjusted Price | 
                    7.28 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/5/2017
             | 
            
                0.00 / 0.00%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                7.28
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2017
             | 
            
                0.00 / 0.00%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.80
             |                     
            
                7.28
             |                                 
            
                398
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2017
             | 
            
                +0.40 / +3.88%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.74
             |                     
            
                7.28
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2017
             | 
            
                -0.60 / -5.50%
             |             
            
                10.80
             |           
            
                11.50
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.83
             |                     
            
                7.01
             |                                 
            
                3,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2017
             | 
            
                +0.80 / +7.92%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.42
             |                                 
            
                170
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2017
             | 
            
                -0.90 / -8.18%
             |             
            
                10.50
             |           
            
                11.20
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.50
             |                     
            
                6.87
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2017
             | 
            
                +0.50 / +4.76%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.50
             |                           
            
                11.00
             | 
            
                10.70
             |                     
            
                7.48
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2017
             | 
            
                0.00 / 0.00%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.30
             |                           
            
                10.50
             | 
            
                10.37
             |                     
            
                7.14
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2017
             | 
            
                -0.70 / -6.25%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                7.14
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2017
             | 
            
                -0.10 / -0.88%
             |             
            
                10.60
             |           
            
                11.20
             |               
            
                10.50
             |                           
            
                11.20
             | 
            
                10.73
             |                     
            
                7.62
             |                                 
            
                2,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2017
             | 
            
                +0.10 / +0.89%
             |             
            
                11.40
             |           
            
                11.80
             |               
            
                11.30
             |                           
            
                11.30
             | 
            
                11.48
             |                     
            
                7.69
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                10.50
             |           
            
                11.20
             |               
            
                10.50
             |                           
            
                11.20
             | 
            
                10.64
             |                     
            
                7.62
             |                                 
            
                5,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2017
             | 
            
                +0.10 / +0.90%
             |             
            
                10.50
             |           
            
                11.30
             |               
            
                10.50
             |                           
            
                11.20
             | 
            
                10.77
             |                     
            
                7.62
             |                                 
            
                2,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2017
             | 
            
                +0.60 / +5.71%
             |             
            
                11.10
             |           
            
                11.10
             |               
            
                11.10
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                7.55
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2017
             | 
            
                -0.80 / -7.08%
             |             
            
                10.50
             |           
            
                10.80
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                10.62
             |                     
            
                7.14
             |                                 
            
                3,083
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2017
             | 
            
                -0.10 / -0.88%
             |             
            
                10.90
             |           
            
                11.30
             |               
            
                10.80
             |                           
            
                11.30
             | 
            
                11.03
             |                     
            
                7.69
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2017
             | 
            
                +0.10 / +0.88%
             |             
            
                10.90
             |           
            
                11.60
             |               
            
                10.80
             |                           
            
                11.40
             | 
            
                11.17
             |                     
            
                7.76
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2017
             | 
            
                -0.50 / -4.24%
             |             
            
                11.00
             |           
            
                11.50
             |               
            
                11.00
             |                           
            
                11.30
             | 
            
                11.20
             |                     
            
                7.69
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2017
             | 
            
                +0.80 / +7.27%
             |             
            
                11.60
             |           
            
                11.80
             |               
            
                11.60
             |                           
            
                11.80
             | 
            
                11.78
             |                     
            
                8.03
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2017
             | 
            
                -0.80 / -6.78%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                11.00
             |                           
            
                11.00
             | 
            
                11.00
             |                     
            
                7.48
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2017
             | 
            
                +0.30 / +2.61%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                10.60
             |                           
            
                11.80
             | 
            
                10.81
             |                     
            
                8.03
             |                                 
            
                2,547
             |            
            
                 
             |                                       
         
    
        
            | 
                11/6/2017
             | 
            
                -0.20 / -1.71%
             |             
            
                11.10
             |           
            
                11.70
             |               
            
                11.00
             |                           
            
                11.50
             | 
            
                11.02
             |                     
            
                7.82
             |                                 
            
                11,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/3/2017
             | 
            
                -0.90 / -7.14%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.95
             |                     
            
                7.96
             |                                 
            
                7,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2017
             | 
            
                -1.30 / -9.35%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.60
             |                           
            
                12.60
             | 
            
                12.67
             |                     
            
                8.57
             |                                 
            
                6,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/1/2017
             | 
            
                -1.50 / -9.74%
             |             
            
                13.90
             |           
            
                13.90
             |               
            
                13.90
             |                           
            
                13.90
             | 
            
                13.90
             |                     
            
                9.46
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/31/2017
             | 
            
                +1.40 / +10.00%
             |             
            
                14.50
             |           
            
                15.40
             |               
            
                14.50
             |                           
            
                15.40
             | 
            
                14.73
             |                     
            
                10.48
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/30/2017
             | 
            
                +0.90 / +6.87%
             |             
            
                13.40
             |           
            
                14.40
             |               
            
                11.90
             |                           
            
                14.00
             | 
            
                12.90
             |                     
            
                9.52
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/27/2017
             | 
            
                -0.10 / -0.76%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                8.91
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                8.98
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/25/2017
             | 
            
                -0.20 / -1.49%
             |             
            
                13.40
             |           
            
                14.50
             |               
            
                12.10
             |                           
            
                13.20
             | 
            
                13.37
             |                     
            
                8.98
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |