| 
                 
                    Closing price on 3/2/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    11.30 | 
                 
                
                    | High | 
                    11.30 | 
                 
                
                    | Low | 
                    10.50 | 
                     
                
                    | Volume | 
                    700 | 
                                 
                
                    | Split-adjusted Price | 
                    7.14 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/2/2017
             | 
            
                -0.20 / -1.87%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                11.30
             |                     
            
                7.14
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2017
             | 
            
                -0.10 / -0.93%
             |             
            
                10.50
             |           
            
                11.00
             |               
            
                10.50
             |                           
            
                10.70
             | 
            
                10.67
             |                     
            
                7.28
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2017
             | 
            
                +0.90 / +9.09%
             |             
            
                9.00
             |           
            
                10.80
             |               
            
                9.00
             |                           
            
                10.80
             | 
            
                9.68
             |                     
            
                7.35
             |                                 
            
                4,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2017
             | 
            
                +0.40 / +4.21%
             |             
            
                9.70
             |           
            
                10.10
             |               
            
                9.70
             |                           
            
                9.90
             | 
            
                9.82
             |                     
            
                6.73
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2017
             | 
            
                -0.30 / -3.06%
             |             
            
                9.10
             |           
            
                9.90
             |               
            
                8.90
             |                           
            
                9.50
             | 
            
                8.98
             |                     
            
                6.46
             |                                 
            
                8,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2017
             | 
            
                -0.10 / -1.01%
             |             
            
                9.10
             |           
            
                9.90
             |               
            
                9.00
             |                           
            
                9.80
             | 
            
                9.30
             |                     
            
                6.67
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2017
             | 
            
                -1.00 / -9.17%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.73
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2017
             | 
            
                0.00 / 0.00%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.42
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.42
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2017
             | 
            
                0.00 / 0.00%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.42
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2017
             | 
            
                +0.90 / +9.00%
             |             
            
                10.50
             |           
            
                11.00
             |               
            
                9.00
             |                           
            
                10.90
             | 
            
                9.33
             |                     
            
                7.42
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2017
             | 
            
                -0.30 / -2.91%
             |             
            
                9.30
             |           
            
                10.00
             |               
            
                9.30
             |                           
            
                10.00
             | 
            
                9.33
             |                     
            
                6.80
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2017
             | 
            
                -0.20 / -1.90%
             |             
            
                10.00
             |           
            
                11.30
             |               
            
                9.50
             |                           
            
                10.30
             | 
            
                9.71
             |                     
            
                7.01
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2017
             | 
            
                -0.30 / -2.78%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                9.80
             |                           
            
                10.50
             | 
            
                9.96
             |                     
            
                7.14
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2017
             | 
            
                -0.10 / -0.92%
             |             
            
                10.90
             |           
            
                11.80
             |               
            
                9.90
             |                           
            
                10.80
             | 
            
                10.64
             |                     
            
                7.35
             |                                 
            
                1,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2017
             | 
            
                -0.10 / -0.91%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                9.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                7.42
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2017
             | 
            
                +0.30 / +2.80%
             |             
            
                10.70
             |           
            
                11.50
             |               
            
                9.70
             |                           
            
                11.00
             | 
            
                10.68
             |                     
            
                7.48
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2017
             | 
            
                +0.80 / +8.08%
             |             
            
                10.70
             |           
            
                10.70
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                7.28
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2017
             | 
            
                0.00 / 0.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.73
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                2/3/2017
             | 
            
                -0.10 / -1.00%
             |             
            
                9.00
             |           
            
                9.90
             |               
            
                9.00
             |                           
            
                9.90
             | 
            
                9.30
             |                     
            
                6.73
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2017
             | 
            
                -0.40 / -3.85%
             |             
            
                9.40
             |           
            
                10.00
             |               
            
                9.40
             |                           
            
                10.00
             | 
            
                9.70
             |                     
            
                6.80
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2017
             | 
            
                +0.30 / +2.97%
             |             
            
                10.00
             |           
            
                10.50
             |               
            
                9.50
             |                           
            
                10.40
             | 
            
                9.97
             |                     
            
                7.07
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2017
             | 
            
                +0.40 / +4.12%
             |             
            
                10.10
             |           
            
                10.10
             |               
            
                10.10
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                6.87
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/23/2017
             | 
            
                0.00 / 0.00%
             |             
            
                9.70
             |           
            
                9.90
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.74
             |                     
            
                6.60
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2017
             | 
            
                +0.20 / +2.11%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                10.00
             |                     
            
                6.60
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2017
             | 
            
                +0.50 / +5.56%
             |             
            
                9.60
             |           
            
                9.60
             |               
            
                8.20
             |                           
            
                9.50
             | 
            
                9.10
             |                     
            
                6.46
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2017
             | 
            
                -0.90 / -9.09%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                10.50
             |                     
            
                6.12
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2017
             | 
            
                +0.30 / +3.13%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.73
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2017
             | 
            
                +0.50 / +5.49%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                8.20
             |                           
            
                9.60
             | 
            
                9.35
             |                     
            
                6.53
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2017
             | 
            
                0.00 / 0.00%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.19
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |