| 
                 
                    Closing price on 4/21/2022
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    36.00 | 
                 
                
                    | High | 
                    36.00 | 
                 
                
                    | Low | 
                    35.60 | 
                     
                
                    | Volume | 
                    3,300 | 
                                 
                
                    | Split-adjusted Price | 
                    16.62 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VTK Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/21/2022
             | 
            
                -0.80 / -2.17%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                35.60
             |                           
            
                36.00
             | 
            
                35.90
             |                     
            
                16.62
             |                                 
            
                3,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2022
             | 
            
                -1.70 / -4.39%
             |             
            
                36.50
             |           
            
                37.10
             |               
            
                36.50
             |                           
            
                37.00
             | 
            
                36.80
             |                     
            
                17.09
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2022
             | 
            
                0.00 / 0.00%
             |             
            
                38.70
             |           
            
                38.70
             |               
            
                38.70
             |                           
            
                38.70
             | 
            
                38.70
             |                     
            
                17.87
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2022
             | 
            
                0.00 / 0.00%
             |             
            
                39.10
             |           
            
                39.10
             |               
            
                38.50
             |                           
            
                38.80
             | 
            
                38.70
             |                     
            
                17.92
             |                                 
            
                8,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2022
             | 
            
                +1.10 / +2.90%
             |             
            
                38.70
             |           
            
                39.00
             |               
            
                38.20
             |                           
            
                39.00
             | 
            
                38.80
             |                     
            
                18.01
             |                                 
            
                5,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2022
             | 
            
                +0.60 / +1.58%
             |             
            
                37.10
             |           
            
                38.50
             |               
            
                37.10
             |                           
            
                38.50
             | 
            
                37.90
             |                     
            
                17.78
             |                                 
            
                2,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2022
             | 
            
                +0.50 / +1.34%
             |             
            
                37.90
             |           
            
                37.90
             |               
            
                37.90
             |                           
            
                37.90
             | 
            
                37.90
             |                     
            
                17.50
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2022
             | 
            
                -0.80 / -2.12%
             |             
            
                38.40
             |           
            
                38.40
             |               
            
                36.50
             |                           
            
                37.00
             | 
            
                37.40
             |                     
            
                17.09
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2022
             | 
            
                +0.40 / +1.06%
             |             
            
                37.50
             |           
            
                38.00
             |               
            
                37.50
             |                           
            
                38.00
             | 
            
                37.80
             |                     
            
                17.55
             |                                 
            
                5,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2022
             | 
            
                -0.60 / -1.57%
             |             
            
                37.60
             |           
            
                37.70
             |               
            
                37.50
             |                           
            
                37.60
             | 
            
                37.60
             |                     
            
                17.36
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2022
             | 
            
                0.00 / 0.00%
             |             
            
                38.60
             |           
            
                38.60
             |               
            
                37.90
             |                           
            
                37.90
             | 
            
                38.20
             |                     
            
                17.50
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2022
             | 
            
                +0.70 / +1.88%
             |             
            
                37.20
             |           
            
                38.00
             |               
            
                37.20
             |                           
            
                38.00
             | 
            
                37.90
             |                     
            
                17.55
             |                                 
            
                5,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2022
             | 
            
                -0.10 / -0.27%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                37.00
             |                           
            
                37.30
             | 
            
                37.30
             |                     
            
                17.22
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2022
             | 
            
                0.00 / 0.00%
             |             
            
                37.40
             |           
            
                37.40
             |               
            
                37.40
             |                           
            
                37.40
             | 
            
                37.40
             |                     
            
                17.27
             |                                 
            
                5,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2022
             | 
            
                -0.10 / -0.27%
             |             
            
                37.40
             |           
            
                37.50
             |               
            
                37.30
             |                           
            
                37.30
             | 
            
                37.40
             |                     
            
                17.22
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2022
             | 
            
                +0.30 / +0.81%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                37.00
             |                           
            
                37.40
             | 
            
                37.40
             |                     
            
                17.27
             |                                 
            
                11,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2022
             | 
            
                0.00 / 0.00%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                36.30
             |                           
            
                37.30
             | 
            
                37.10
             |                     
            
                17.22
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2022
             | 
            
                +1.70 / +4.71%
             |             
            
                36.10
             |           
            
                39.90
             |               
            
                36.10
             |                           
            
                37.80
             | 
            
                37.30
             |                     
            
                17.45
             |                                 
            
                7,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2022
             | 
            
                +1.20 / +3.44%
             |             
            
                35.00
             |           
            
                37.80
             |               
            
                35.00
             |                           
            
                36.10
             | 
            
                36.10
             |                     
            
                16.67
             |                                 
            
                9,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2022
             | 
            
                -1.50 / -4.07%
             |             
            
                35.90
             |           
            
                36.00
             |               
            
                33.10
             |                           
            
                35.40
             | 
            
                34.90
             |                     
            
                16.35
             |                                 
            
                20,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2022
             | 
            
                -2.50 / -6.48%
             |             
            
                37.50
             |           
            
                38.00
             |               
            
                36.10
             |                           
            
                36.10
             | 
            
                36.90
             |                     
            
                16.67
             |                                 
            
                14,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2022
             | 
            
                -4.80 / -11.21%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.60
             |                     
            
                17.55
             |                                 
            
                22,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2022
             | 
            
                +4.40 / +11.70%
             |             
            
                43.00
             |           
            
                43.20
             |               
            
                37.60
             |                           
            
                42.00
             | 
            
                42.80
             |                     
            
                19.39
             |                                 
            
                50,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2022
             | 
            
                +4.90 / +14.89%
             |             
            
                35.00
             |           
            
                37.80
             |               
            
                35.00
             |                           
            
                37.80
             | 
            
                37.60
             |                     
            
                17.45
             |                                 
            
                27,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2022
             | 
            
                +4.10 / +13.27%
             |             
            
                31.00
             |           
            
                35.20
             |               
            
                31.00
             |                           
            
                35.00
             | 
            
                32.90
             |                     
            
                16.16
             |                                 
            
                31,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2022
             | 
            
                +0.30 / +0.98%
             |             
            
                30.70
             |           
            
                31.00
             |               
            
                30.50
             |                           
            
                31.00
             | 
            
                30.90
             |                     
            
                14.31
             |                                 
            
                20,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2022
             | 
            
                +1.00 / +3.37%
             |             
            
                31.00
             |           
            
                31.00
             |               
            
                30.50
             |                           
            
                30.70
             | 
            
                30.70
             |                     
            
                14.18
             |                                 
            
                12,900
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2022
             | 
            
                +0.10 / +0.34%
             |             
            
                29.60
             |           
            
                29.90
             |               
            
                29.50
             |                           
            
                29.70
             | 
            
                29.70
             |                     
            
                13.71
             |                                 
            
                13,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2022
             | 
            
                +0.70 / +2.43%
             |             
            
                29.50
             |           
            
                29.90
             |               
            
                29.10
             |                           
            
                29.50
             | 
            
                29.60
             |                     
            
                13.62
             |                                 
            
                25,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2022
             | 
            
                +0.30 / +1.05%
             |             
            
                28.80
             |           
            
                28.90
             |               
            
                28.80
             |                           
            
                28.80
             | 
            
                28.80
             |                     
            
                13.30
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |