| 
                 
                    Closing price on 5/25/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.70 | 
                 
                
                    | High | 
                    10.80 | 
                 
                
                    | Low | 
                    10.40 | 
                     
                
                    | Volume | 
                    148,700 | 
                                 
                
                    | Split-adjusted Price | 
                    6.92 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
CST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/25/2021
             | 
            
                -0.30 / -2.80%
             |             
            
                10.70
             |           
            
                10.80
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.50
             |                     
            
                6.92
             |                                 
            
                148,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2021
             | 
            
                +0.30 / +2.88%
             |             
            
                10.70
             |           
            
                10.90
             |               
            
                10.40
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                7.12
             |                                 
            
                56,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2021
             | 
            
                -0.10 / -0.94%
             |             
            
                10.40
             |           
            
                10.50
             |               
            
                10.40
             |                           
            
                10.50
             | 
            
                10.40
             |                     
            
                6.99
             |                                 
            
                61,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2021
             | 
            
                0.00 / 0.00%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                10.60
             |                     
            
                6.99
             |                                 
            
                49,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2021
             | 
            
                +0.10 / +0.93%
             |             
            
                10.50
             |           
            
                10.80
             |               
            
                10.40
             |                           
            
                10.80
             | 
            
                10.53
             |                     
            
                7.19
             |                                 
            
                72,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                10.70
             |           
            
                11.00
             |               
            
                10.30
             |                           
            
                10.80
             | 
            
                10.68
             |                     
            
                7.19
             |                                 
            
                24,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2021
             | 
            
                -0.60 / -5.31%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                10.70
             |                           
            
                10.70
             | 
            
                10.80
             |                     
            
                7.12
             |                                 
            
                66,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2021
             | 
            
                -0.20 / -1.75%
             |             
            
                11.80
             |           
            
                11.90
             |               
            
                11.10
             |                           
            
                11.20
             | 
            
                11.32
             |                     
            
                7.45
             |                                 
            
                52,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2021
             | 
            
                +1.40 / +13.46%
             |             
            
                11.00
             |           
            
                11.80
             |               
            
                11.00
             |                           
            
                11.80
             | 
            
                11.43
             |                     
            
                7.85
             |                                 
            
                182,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2021
             | 
            
                +0.70 / +7.00%
             |             
            
                10.10
             |           
            
                10.70
             |               
            
                10.00
             |                           
            
                10.70
             | 
            
                10.44
             |                     
            
                7.12
             |                                 
            
                70,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2021
             | 
            
                +0.40 / +4.04%
             |             
            
                10.00
             |           
            
                10.40
             |               
            
                9.90
             |                           
            
                10.30
             | 
            
                10.05
             |                     
            
                6.85
             |                                 
            
                42,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2021
             | 
            
                +0.40 / +4.17%
             |             
            
                9.60
             |           
            
                10.10
             |               
            
                9.60
             |                           
            
                10.00
             | 
            
                9.92
             |                     
            
                6.65
             |                                 
            
                52,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2021
             | 
            
                -0.20 / -2.04%
             |             
            
                9.70
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.60
             | 
            
                9.60
             |                     
            
                6.39
             |                                 
            
                24,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2021
             | 
            
                +0.30 / +3.16%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.78
             |                     
            
                6.52
             |                                 
            
                50,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2021
             | 
            
                +0.10 / +1.01%
             |             
            
                9.00
             |           
            
                11.00
             |               
            
                9.00
             |                           
            
                10.00
             | 
            
                9.54
             |                     
            
                6.65
             |                                 
            
                19,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2021
             | 
            
                -1.10 / -10.28%
             |             
            
                10.90
             |           
            
                10.90
             |               
            
                9.60
             |                           
            
                9.60
             | 
            
                9.88
             |                     
            
                6.39
             |                                 
            
                15,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2021
             | 
            
                -1.10 / -8.80%
             |             
            
                12.40
             |           
            
                12.40
             |               
            
                10.70
             |                           
            
                11.40
             | 
            
                10.71
             |                     
            
                7.58
             |                                 
            
                84,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2021
             | 
            
                +0.40 / +3.45%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.45
             |                     
            
                7.98
             |                                 
            
                19,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2021
             | 
            
                +1.10 / +10.58%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.61
             |                     
            
                7.65
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2021
             | 
            
                -4.50 / -26.32%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                10.30
             |                           
            
                12.60
             | 
            
                10.41
             |                     
            
                8.38
             |                                 
            
                106,000
             |  
            
                 
             |                                                              
             
    
         
    
    
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