| 
                 
                    Closing price on 3/2/2022
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.40 | 
                 
                
                    | High | 
                    9.60 | 
                 
                
                    | Low | 
                    9.40 | 
                     
                
                    | Volume | 
                    6,200 | 
                                 
                
                    | Split-adjusted Price | 
                    7.79 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/2/2022
             | 
            
                -0.10 / -1.03%
             |             
            
                9.40
             |           
            
                9.60
             |               
            
                9.40
             |                           
            
                9.60
             | 
            
                9.57
             |                     
            
                7.79
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2022
             | 
            
                -0.10 / -1.02%
             |             
            
                9.50
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.70
             | 
            
                9.61
             |                     
            
                7.87
             |                                 
            
                25,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.50
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.70
             |                     
            
                7.95
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.65
             |                     
            
                7.95
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/24/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                9.90
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.71
             |                     
            
                7.95
             |                                 
            
                36,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2022
             | 
            
                -0.10 / -1.01%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.84
             |                     
            
                7.95
             |                                 
            
                7,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.80
             |                           
            
                9.90
             | 
            
                9.90
             |                     
            
                8.03
             |                                 
            
                3,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2022
             | 
            
                +0.10 / +1.02%
             |             
            
                9.80
             |           
            
                9.90
             |               
            
                9.60
             |                           
            
                9.90
             | 
            
                9.67
             |                     
            
                8.03
             |                                 
            
                14,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2022
             | 
            
                -0.20 / -2.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.60
             |                           
            
                9.80
             | 
            
                9.87
             |                     
            
                7.95
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2022
             | 
            
                +0.50 / +5.26%
             |             
            
                9.50
             |           
            
                10.40
             |               
            
                9.40
             |                           
            
                10.00
             | 
            
                10.02
             |                     
            
                8.11
             |                                 
            
                17,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/16/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.50
             |           
            
                9.60
             |               
            
                9.50
             |                           
            
                9.50
             | 
            
                9.50
             |                     
            
                7.70
             |                                 
            
                5,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.40
             |           
            
                9.80
             |               
            
                9.40
             |                           
            
                9.50
             | 
            
                9.58
             |                     
            
                7.70
             |                                 
            
                7,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2022
             | 
            
                -0.40 / -4.04%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.00
             |                           
            
                9.50
             | 
            
                9.48
             |                     
            
                7.70
             |                                 
            
                8,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2022
             | 
            
                -0.30 / -2.94%
             |             
            
                10.00
             |           
            
                10.20
             |               
            
                9.60
             |                           
            
                9.90
             | 
            
                9.83
             |                     
            
                8.03
             |                                 
            
                21,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2022
             | 
            
                +0.20 / +2.00%
             |             
            
                9.90
             |           
            
                10.20
             |               
            
                9.30
             |                           
            
                10.20
             | 
            
                9.82
             |                     
            
                8.27
             |                                 
            
                7,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.10
             |           
            
                10.20
             |               
            
                9.10
             |                           
            
                10.00
             | 
            
                9.22
             |                     
            
                8.11
             |                                 
            
                5,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2022
             | 
            
                +0.60 / +6.38%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.03
             |                     
            
                8.11
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.40
             |               
            
                9.20
             |                           
            
                9.40
             | 
            
                9.38
             |                     
            
                7.62
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2022
             | 
            
                -0.10 / -1.05%
             |             
            
                9.10
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.40
             | 
            
                9.18
             |                     
            
                7.62
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.50
             |               
            
                9.30
             |                           
            
                9.50
             | 
            
                9.43
             |                     
            
                7.70
             |                                 
            
                3,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2022
             | 
            
                -0.10 / -1.04%
             |             
            
                9.20
             |           
            
                9.50
             |               
            
                9.20
             |                           
            
                9.50
             | 
            
                9.22
             |                     
            
                7.70
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.60
             |           
            
                9.60
             |               
            
                9.30
             |                           
            
                9.60
             | 
            
                9.45
             |                     
            
                7.79
             |                                 
            
                2,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2022
             | 
            
                -0.20 / -2.04%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.10
             |                           
            
                9.60
             | 
            
                9.25
             |                     
            
                7.79
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2022
             | 
            
                0.00 / 0.00%
             |             
            
                9.90
             |           
            
                10.00
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.90
             |                     
            
                7.95
             |                                 
            
                4,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2022
             | 
            
                +0.60 / +6.52%
             |             
            
                9.10
             |           
            
                9.80
             |               
            
                9.10
             |                           
            
                9.80
             | 
            
                9.26
             |                     
            
                7.95
             |                                 
            
                4,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2022
             | 
            
                -1.00 / -9.80%
             |             
            
                9.30
             |           
            
                9.50
             |               
            
                9.20
             |                           
            
                9.20
             | 
            
                9.23
             |                     
            
                7.46
             |                                 
            
                111,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2022
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                9.50
             |                           
            
                10.20
             | 
            
                9.65
             |                     
            
                8.27
             |                                 
            
                10,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2022
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                9.90
             |                           
            
                10.30
             | 
            
                10.13
             |                     
            
                8.35
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2022
             | 
            
                -0.10 / -0.96%
             |             
            
                9.60
             |           
            
                10.40
             |               
            
                9.60
             |                           
            
                10.30
             | 
            
                9.78
             |                     
            
                8.35
             |                                 
            
                22,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2022
             | 
            
                -0.30 / -2.80%
             |             
            
                10.60
             |           
            
                10.80
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.63
             |                     
            
                8.43
             |                                 
            
                9,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |