| 
                 
                    Closing price on 5/6/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.70 | 
                 
                
                    | High | 
                    9.10 | 
                 
                
                    | Low | 
                    8.70 | 
                     
                
                    | Volume | 
                    64,200 | 
                                 
                
                    | Split-adjusted Price | 
                    7.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NRC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/6/2020
             | 
            
                +0.20 / +2.30%
             |             
            
                8.70
             |           
            
                9.10
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.92
             |                     
            
                7.35
             |                                 
            
                64,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2020
             | 
            
                +0.60 / +7.41%
             |             
            
                8.10
             |           
            
                8.80
             |               
            
                8.10
             |                           
            
                8.70
             | 
            
                8.58
             |                     
            
                7.19
             |                                 
            
                44,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2020
             | 
            
                -0.10 / -1.22%
             |             
            
                8.00
             |           
            
                8.60
             |               
            
                8.00
             |                           
            
                8.10
             | 
            
                8.05
             |                     
            
                6.69
             |                                 
            
                13,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2020
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.30
             |               
            
                7.60
             |                           
            
                8.20
             | 
            
                7.78
             |                     
            
                6.77
             |                                 
            
                85,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2020
             | 
            
                -0.20 / -2.38%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.10
             |                           
            
                8.20
             | 
            
                8.22
             |                     
            
                6.77
             |                                 
            
                28,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2020
             | 
            
                -0.70 / -7.69%
             |             
            
                9.30
             |           
            
                9.60
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                9.31
             |                     
            
                6.94
             |                                 
            
                82,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2020
             | 
            
                +0.30 / +3.41%
             |             
            
                8.70
             |           
            
                9.20
             |               
            
                8.70
             |                           
            
                9.10
             | 
            
                8.90
             |                     
            
                7.52
             |                                 
            
                37,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2020
             | 
            
                +0.50 / +6.02%
             |             
            
                8.90
             |           
            
                9.10
             |               
            
                7.80
             |                           
            
                8.80
             | 
            
                9.07
             |                     
            
                7.27
             |                                 
            
                151,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2020
             | 
            
                +0.70 / +9.21%
             |             
            
                7.50
             |           
            
                8.30
             |               
            
                7.10
             |                           
            
                8.30
             | 
            
                8.13
             |                     
            
                6.86
             |                                 
            
                264,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2020
             | 
            
                -0.60 / -7.32%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                7.50
             |                           
            
                7.60
             | 
            
                7.73
             |                     
            
                6.28
             |                                 
            
                59,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2020
             | 
            
                -0.20 / -2.38%
             |             
            
                8.30
             |           
            
                8.40
             |               
            
                8.10
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                6.77
             |                                 
            
                51,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2020
             | 
            
                -0.20 / -2.33%
             |             
            
                8.40
             |           
            
                8.80
             |               
            
                8.10
             |                           
            
                8.40
             | 
            
                8.43
             |                     
            
                6.94
             |                                 
            
                97,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2020
             | 
            
                -0.10 / -1.15%
             |             
            
                8.70
             |           
            
                8.70
             |               
            
                8.30
             |                           
            
                8.60
             | 
            
                8.50
             |                     
            
                7.11
             |                                 
            
                49,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2020
             | 
            
                +0.10 / +1.16%
             |             
            
                8.50
             |           
            
                8.90
             |               
            
                8.50
             |                           
            
                8.70
             | 
            
                8.71
             |                     
            
                7.19
             |                                 
            
                106,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2020
             | 
            
                -0.10 / -1.15%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.30
             |                           
            
                8.60
             | 
            
                8.49
             |                     
            
                7.11
             |                                 
            
                42,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2020
             | 
            
                +0.70 / +8.75%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.60
             |                           
            
                8.70
             | 
            
                8.77
             |                     
            
                7.19
             |                                 
            
                194,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2020
             | 
            
                +0.70 / +9.59%
             |             
            
                7.30
             |           
            
                8.00
             |               
            
                7.30
             |                           
            
                8.00
             | 
            
                7.98
             |                     
            
                6.61
             |                                 
            
                144,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2020
             | 
            
                -0.40 / -5.19%
             |             
            
                7.70
             |           
            
                8.00
             |               
            
                7.30
             |                           
            
                7.30
             | 
            
                7.42
             |                     
            
                6.03
             |                                 
            
                42,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2020
             | 
            
                +0.10 / +1.32%
             |             
            
                7.60
             |           
            
                7.70
             |               
            
                7.60
             |                           
            
                7.70
             | 
            
                7.63
             |                     
            
                6.36
             |                                 
            
                7,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2020
             | 
            
                +0.30 / +4.11%
             |             
            
                7.50
             |           
            
                8.00
             |               
            
                7.40
             |                           
            
                7.60
             | 
            
                7.95
             |                     
            
                6.28
             |                                 
            
                238,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2020
             | 
            
                +0.30 / +4.29%
             |             
            
                7.00
             |           
            
                7.70
             |               
            
                7.00
             |                           
            
                7.30
             | 
            
                7.64
             |                     
            
                6.03
             |                                 
            
                138,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2020
             | 
            
                +0.10 / +1.45%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                7.00
             |                           
            
                7.00
             | 
            
                7.05
             |                     
            
                5.78
             |                                 
            
                63,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2020
             | 
            
                +0.10 / +1.47%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                7.00
             |                     
            
                5.70
             |                                 
            
                84,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2020
             | 
            
                +0.10 / +1.49%
             |             
            
                7.00
             |           
            
                7.20
             |               
            
                6.80
             |                           
            
                6.80
             | 
            
                6.94
             |                     
            
                5.62
             |                                 
            
                31,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2020
             | 
            
                -0.20 / -2.90%
             |             
            
                6.90
             |           
            
                7.00
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.87
             |                     
            
                5.54
             |                                 
            
                60,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2020
             | 
            
                -0.20 / -2.82%
             |             
            
                7.10
             |           
            
                7.20
             |               
            
                6.90
             |                           
            
                6.90
             | 
            
                7.06
             |                     
            
                5.70
             |                                 
            
                39,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2020
             | 
            
                -0.10 / -1.39%
             |             
            
                7.30
             |           
            
                7.30
             |               
            
                7.10
             |                           
            
                7.10
             | 
            
                7.12
             |                     
            
                5.87
             |                                 
            
                17,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2020
             | 
            
                +0.20 / +2.86%
             |             
            
                7.20
             |           
            
                7.20
             |               
            
                7.10
             |                           
            
                7.20
             | 
            
                7.17
             |                     
            
                5.95
             |                                 
            
                4,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/24/2020
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                7.50
             |               
            
                6.40
             |                           
            
                7.00
             | 
            
                7.06
             |                     
            
                5.78
             |                                 
            
                17,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2020
             | 
            
                -0.60 / -7.89%
             |             
            
                7.60
             |           
            
                7.60
             |               
            
                7.00
             |                           
            
                7.00
             | 
            
                7.30
             |                     
            
                5.78
             |                                 
            
                63,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |