| 
                 
                    Closing price on 8/30/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    7.80 | 
                 
                
                    | High | 
                    7.80 | 
                 
                
                    | Low | 
                    7.80 | 
                     
                
                    | Volume | 
                    0 | 
                                 
                
                    | Split-adjusted Price | 
                    5.31 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/30/2016
             | 
            
                0.00 / 0.00%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                7.80
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.31
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2016
             | 
            
                0.00 / 0.00%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                7.80
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.31
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                7.80
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.31
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2016
             | 
            
                -0.20 / -2.50%
             |             
            
                7.20
             |           
            
                7.80
             |               
            
                7.20
             |                           
            
                7.80
             | 
            
                7.29
             |                     
            
                5.31
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2016
             | 
            
                +0.20 / +2.56%
             |             
            
                7.20
             |           
            
                8.00
             |               
            
                7.20
             |                           
            
                8.00
             | 
            
                7.60
             |                     
            
                5.44
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2016
             | 
            
                0.00 / 0.00%
             |             
            
                7.80
             |           
            
                7.80
             |               
            
                7.80
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                5.31
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2016
             | 
            
                -0.10 / -1.27%
             |             
            
                7.40
             |           
            
                7.80
             |               
            
                7.40
             |                           
            
                7.80
             | 
            
                7.60
             |                     
            
                5.31
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                7.90
             |           
            
                7.90
             |               
            
                7.90
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.37
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2016
             | 
            
                +0.30 / +3.95%
             |             
            
                7.90
             |           
            
                7.90
             |               
            
                7.90
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                5.37
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2016
             | 
            
                +0.40 / +5.56%
             |             
            
                7.60
             |           
            
                7.60
             |               
            
                7.60
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                5.17
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2016
             | 
            
                -0.80 / -10.00%
             |             
            
                7.50
             |           
            
                7.50
             |               
            
                7.20
             |                           
            
                7.20
             | 
            
                7.50
             |                     
            
                4.90
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2016
             | 
            
                0.00 / 0.00%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                5.44
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2016
             | 
            
                -0.40 / -4.76%
             |             
            
                7.60
             |           
            
                8.20
             |               
            
                7.60
             |                           
            
                8.00
             | 
            
                7.66
             |                     
            
                5.44
             |                                 
            
                5,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                7.90
             |           
            
                8.40
             |               
            
                7.60
             |                           
            
                8.40
             | 
            
                7.62
             |                     
            
                5.71
             |                                 
            
                5,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2016
             | 
            
                +0.20 / +2.44%
             |             
            
                7.80
             |           
            
                8.40
             |               
            
                7.80
             |                           
            
                8.40
             | 
            
                7.80
             |                     
            
                5.71
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2016
             | 
            
                -0.90 / -9.89%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.21
             |                     
            
                5.58
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2016
             | 
            
                +0.40 / +4.60%
             |             
            
                8.00
             |           
            
                9.10
             |               
            
                8.00
             |                           
            
                9.10
             | 
            
                8.83
             |                     
            
                6.19
             |                                 
            
                1,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2016
             | 
            
                -0.40 / -4.40%
             |             
            
                8.30
             |           
            
                8.80
             |               
            
                8.20
             |                           
            
                8.70
             | 
            
                8.27
             |                     
            
                5.92
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2016
             | 
            
                -0.10 / -1.09%
             |             
            
                9.10
             |           
            
                9.10
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                6.19
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2016
             | 
            
                -0.10 / -1.08%
             |             
            
                8.40
             |           
            
                9.30
             |               
            
                8.40
             |                           
            
                9.20
             | 
            
                8.58
             |                     
            
                6.26
             |                                 
            
                1,618
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2016
             | 
            
                -0.10 / -1.06%
             |             
            
                8.50
             |           
            
                9.60
             |               
            
                8.50
             |                           
            
                9.30
             | 
            
                8.74
             |                     
            
                6.33
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2016
             | 
            
                -0.40 / -4.08%
             |             
            
                8.90
             |           
            
                9.40
             |               
            
                8.90
             |                           
            
                9.40
             | 
            
                8.90
             |                     
            
                6.39
             |                                 
            
                6,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2016
             | 
            
                -0.10 / -1.01%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                10.00
             |                     
            
                6.67
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/28/2016
             | 
            
                +0.50 / +5.32%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                6.73
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2016
             | 
            
                -0.20 / -2.08%
             |             
            
                8.70
             |           
            
                9.50
             |               
            
                8.70
             |                           
            
                9.40
             | 
            
                8.83
             |                     
            
                6.39
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2016
             | 
            
                -0.20 / -2.04%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                8.90
             |                           
            
                9.60
             | 
            
                9.22
             |                     
            
                6.53
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                6.67
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                7/22/2016
             | 
            
                +0.50 / +5.38%
             |             
            
                9.20
             |           
            
                9.80
             |               
            
                9.20
             |                           
            
                9.80
             | 
            
                9.30
             |                     
            
                6.67
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/21/2016
             | 
            
                +0.50 / +5.68%
             |             
            
                9.10
             |           
            
                9.30
             |               
            
                9.10
             |                           
            
                9.30
             | 
            
                9.20
             |                     
            
                6.33
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2016
             | 
            
                +0.20 / +2.33%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.80
             |                     
            
                5.99
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |