| 
                 
                    Closing price on 11/12/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.20 | 
                 
                
                    | High | 
                    4.20 | 
                 
                
                    | Low | 
                    3.60 | 
                     
                
                    | Volume | 
                    2,523,100 | 
                                 
                
                    | Split-adjusted Price | 
                    3.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/12/2021
             | 
            
                -0.40 / -9.52%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                3.60
             |                           
            
                3.80
             | 
            
                3.80
             |                     
            
                3.80
             |                                 
            
                2,523,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2021
             | 
            
                -0.70 / -14.29%
             |             
            
                4.30
             |           
            
                4.90
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                699,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.90
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2021
             | 
            
                -0.70 / -12.96%
             |             
            
                5.40
             |           
            
                5.60
             |               
            
                4.60
             |                           
            
                4.70
             | 
            
                4.90
             |                     
            
                4.70
             |                                 
            
                897,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/22/2021
             | 
            
                -0.20 / -3.85%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                4.80
             |                           
            
                5.00
             | 
            
                5.40
             |                     
            
                5.00
             |                                 
            
                1,247,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/21/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/15/2021
             | 
            
                +0.60 / +13.04%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                1,020,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/14/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.60
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.60
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.60
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/11/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.60
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/8/2021
             | 
            
                +0.60 / +15.00%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.60
             |                                 
            
                881,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/7/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/6/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/5/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/4/2021
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
         
    
    
 |