| 
                 
                    Closing price on 5/19/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.70 | 
                 
                
                    | High | 
                    9.10 | 
                 
                
                    | Low | 
                    8.40 | 
                     
                
                    | Volume | 
                    36,900 | 
                                 
                
                    | Split-adjusted Price | 
                    6.94 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
NRC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/19/2020
             | 
            
                -0.30 / -3.45%
             |             
            
                8.70
             |           
            
                9.10
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.67
             |                     
            
                6.94
             |                                 
            
                36,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2020
             | 
            
                -0.30 / -3.33%
             |             
            
                9.00
             |           
            
                9.10
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.80
             |                     
            
                7.19
             |                                 
            
                12,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2020
             | 
            
                -0.50 / -5.26%
             |             
            
                9.50
             |           
            
                9.50
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.26
             |                     
            
                7.44
             |                                 
            
                85,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2020
             | 
            
                +0.30 / +3.26%
             |             
            
                9.20
             |           
            
                9.50
             |               
            
                9.20
             |                           
            
                9.50
             | 
            
                9.38
             |                     
            
                7.85
             |                                 
            
                7,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2020
             | 
            
                +0.10 / +1.10%
             |             
            
                9.10
             |           
            
                9.60
             |               
            
                9.00
             |                           
            
                9.20
             | 
            
                9.25
             |                     
            
                7.60
             |                                 
            
                202,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2020
             | 
            
                0.00 / 0.00%
             |             
            
                9.30
             |           
            
                9.60
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.32
             |                     
            
                7.52
             |                                 
            
                107,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2020
             | 
            
                +0.10 / +1.11%
             |             
            
                9.00
             |           
            
                9.20
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.10
             |                     
            
                7.52
             |                                 
            
                33,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2020
             | 
            
                +0.20 / +2.27%
             |             
            
                8.80
             |           
            
                9.10
             |               
            
                8.80
             |                           
            
                9.00
             | 
            
                8.98
             |                     
            
                7.44
             |                                 
            
                44,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2020
             | 
            
                -0.10 / -1.12%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                8.80
             | 
            
                8.94
             |                     
            
                7.27
             |                                 
            
                32,500
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |