| 
                 
                    Closing price on 6/29/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.70 | 
                 
                
                    | High | 
                    5.10 | 
                 
                
                    | Low | 
                    4.70 | 
                     
                
                    | Volume | 
                    32,100 | 
                                 
                
                    | Split-adjusted Price | 
                    4.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VKC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/29/2020
             | 
            
                -0.10 / -2.00%
             |             
            
                4.70
             |           
            
                5.10
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.85
             |                     
            
                4.90
             |                                 
            
                32,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2020
             | 
            
                +0.10 / +2.04%
             |             
            
                4.80
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                5.00
             | 
            
                4.89
             |                     
            
                5.00
             |                                 
            
                26,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2020
             | 
            
                -0.10 / -2.00%
             |             
            
                4.80
             |           
            
                5.30
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                5.02
             |                     
            
                4.90
             |                                 
            
                110,900
             |            
            
                 
             |                                       
         
    
        
            | 
                6/24/2020
             | 
            
                -0.10 / -1.96%
             |             
            
                4.90
             |           
            
                5.40
             |               
            
                4.90
             |                           
            
                5.00
             | 
            
                5.06
             |                     
            
                5.00
             |                                 
            
                52,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/23/2020
             | 
            
                -0.30 / -5.56%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                5.16
             |                     
            
                5.10
             |                                 
            
                166,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2020
             | 
            
                +0.10 / +1.89%
             |             
            
                5.40
             |           
            
                5.80
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.70
             |                     
            
                5.40
             |                                 
            
                283,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2020
             | 
            
                +0.40 / +8.16%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.28
             |                     
            
                5.30
             |                                 
            
                156,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/18/2020
             | 
            
                +0.40 / +8.89%
             |             
            
                4.40
             |           
            
                4.90
             |               
            
                4.40
             |                           
            
                4.90
             | 
            
                4.83
             |                     
            
                4.90
             |                                 
            
                158,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/17/2020
             | 
            
                +0.40 / +9.76%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.49
             |                     
            
                4.50
             |                                 
            
                116,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2020
             | 
            
                +0.30 / +7.89%
             |             
            
                3.80
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                4.10
             | 
            
                3.97
             |                     
            
                4.10
             |                                 
            
                134,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2020
             | 
            
                +0.10 / +2.70%
             |             
            
                3.60
             |           
            
                3.80
             |               
            
                3.50
             |                           
            
                3.80
             | 
            
                3.72
             |                     
            
                3.80
             |                                 
            
                234,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2020
             | 
            
                +0.10 / +2.78%
             |             
            
                3.40
             |           
            
                3.70
             |               
            
                3.30
             |                           
            
                3.70
             | 
            
                3.56
             |                     
            
                3.70
             |                                 
            
                151,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2020
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.85
             |                     
            
                3.60
             |                                 
            
                176,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2020
             | 
            
                +0.30 / +9.09%
             |             
            
                3.30
             |           
            
                3.60
             |               
            
                3.30
             |                           
            
                3.60
             | 
            
                3.52
             |                     
            
                3.60
             |                                 
            
                234,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2020
             | 
            
                +0.30 / +10.00%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.30
             | 
            
                3.25
             |                     
            
                3.30
             |                                 
            
                126,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2020
             | 
            
                +0.20 / +7.14%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                3.00
             | 
            
                2.97
             |                     
            
                3.00
             |                                 
            
                143,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2020
             | 
            
                -0.10 / -3.45%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.90
             |                     
            
                2.80
             |                                 
            
                26,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2020
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.83
             |                     
            
                2.90
             |                                 
            
                68,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2020
             | 
            
                +0.10 / +3.70%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.71
             |                     
            
                2.80
             |                                 
            
                75,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2020
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.69
             |                     
            
                2.70
             |                                 
            
                29,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2020
             | 
            
                +0.20 / +8.00%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.61
             |                     
            
                2.70
             |                                 
            
                16,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2020
             | 
            
                -0.10 / -3.85%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.50
             |                           
            
                2.50
             | 
            
                2.50
             |                     
            
                2.50
             |                                 
            
                69,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2020
             | 
            
                0.00 / 0.00%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                13,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2020
             | 
            
                0.00 / 0.00%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                20,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2020
             | 
            
                0.00 / 0.00%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                50,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2020
             | 
            
                +0.10 / +4.00%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.50
             |                     
            
                2.60
             |                                 
            
                14,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2020
             | 
            
                -0.10 / -3.85%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.50
             |                           
            
                2.50
             | 
            
                2.51
             |                     
            
                2.50
             |                                 
            
                1,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2020
             | 
            
                -0.10 / -3.70%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                10,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2020
             | 
            
                +0.20 / +8.00%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.61
             |                     
            
                2.70
             |                                 
            
                11,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2020
             | 
            
                -0.10 / -3.85%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.50
             |                           
            
                2.50
             | 
            
                2.50
             |                     
            
                2.50
             |                                 
            
                67,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |