| 
                 
                    Closing price on 5/18/2022
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.20 | 
                 
                
                    | High | 
                    13.30 | 
                 
                
                    | Low | 
                    12.00 | 
                     
                
                    | Volume | 
                    8,100 | 
                                 
                
                    | Split-adjusted Price | 
                    7.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/18/2022
             | 
            
                +1.50 / +12.71%
             |             
            
                12.20
             |           
            
                13.30
             |               
            
                12.00
             |                           
            
                13.30
             | 
            
                12.80
             |                     
            
                7.50
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2022
             | 
            
                -0.30 / -2.27%
             |             
            
                12.00
             |           
            
                13.70
             |               
            
                11.30
             |                           
            
                12.90
             | 
            
                11.80
             |                     
            
                7.27
             |                                 
            
                21,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2022
             | 
            
                -1.80 / -13.04%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                13.20
             |                     
            
                6.77
             |                                 
            
                5,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2022
             | 
            
                +1.60 / +13.22%
             |             
            
                13.60
             |           
            
                13.90
             |               
            
                12.20
             |                           
            
                13.70
             | 
            
                13.80
             |                     
            
                7.72
             |                                 
            
                59,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2022
             | 
            
                +1.50 / +14.15%
             |             
            
                12.10
             |           
            
                12.10
             |               
            
                12.10
             |                           
            
                12.10
             | 
            
                12.10
             |                     
            
                6.82
             |                                 
            
                16,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2022
             | 
            
                +1.30 / +13.98%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                5.98
             |                                 
            
                9,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2022
             | 
            
                +0.40 / +3.92%
             |             
            
                8.80
             |           
            
                10.60
             |               
            
                8.70
             |                           
            
                10.60
             | 
            
                9.30
             |                     
            
                5.98
             |                                 
            
                20,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2022
             | 
            
                -1.50 / -13.39%
             |             
            
                11.20
             |           
            
                11.20
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                10.20
             |                     
            
                5.47
             |                                 
            
                7,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2022
             | 
            
                -0.30 / -2.48%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                10.50
             |                           
            
                11.80
             | 
            
                11.20
             |                     
            
                6.65
             |                                 
            
                8,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2022
             | 
            
                -1.10 / -8.40%
             |             
            
                12.00
             |           
            
                13.00
             |               
            
                11.80
             |                           
            
                12.00
             | 
            
                12.10
             |                     
            
                6.77
             |                                 
            
                13,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2022
             | 
            
                +0.10 / +0.77%
             |             
            
                12.90
             |           
            
                13.20
             |               
            
                12.90
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                7.39
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2022
             | 
            
                +0.20 / +1.59%
             |             
            
                12.60
             |           
            
                13.50
             |               
            
                12.60
             |                           
            
                12.80
             | 
            
                13.00
             |                     
            
                7.22
             |                                 
            
                3,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2022
             | 
            
                -0.30 / -2.34%
             |             
            
                12.80
             |           
            
                13.20
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.60
             |                     
            
                7.05
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2022
             | 
            
                +1.40 / +12.28%
             |             
            
                12.80
             |           
            
                12.80
             |               
            
                12.80
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                7.22
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2022
             | 
            
                -0.60 / -5.17%
             |             
            
                10.90
             |           
            
                11.70
             |               
            
                10.40
             |                           
            
                11.00
             | 
            
                11.40
             |                     
            
                6.20
             |                                 
            
                21,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2022
             | 
            
                -1.80 / -14.17%
             |             
            
                14.20
             |           
            
                14.20
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                11.60
             |                     
            
                6.15
             |                                 
            
                13,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2022
             | 
            
                0.00 / 0.00%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.70
             |                     
            
                6.94
             |                                 
            
                5,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2022
             | 
            
                -0.40 / -2.88%
             |             
            
                13.70
             |           
            
                13.70
             |               
            
                12.00
             |                           
            
                13.50
             | 
            
                12.30
             |                     
            
                7.61
             |                                 
            
                34,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2022
             | 
            
                0.00 / 0.00%
             |             
            
                13.70
             |           
            
                14.20
             |               
            
                13.70
             |                           
            
                13.70
             | 
            
                13.90
             |                     
            
                7.72
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2022
             | 
            
                -2.30 / -14.94%
             |             
            
                15.40
             |           
            
                15.40
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.70
             |                     
            
                7.39
             |                                 
            
                19,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2022
             | 
            
                -0.80 / -4.79%
             |             
            
                17.40
             |           
            
                17.40
             |               
            
                14.20
             |                           
            
                15.90
             | 
            
                15.40
             |                     
            
                8.96
             |                                 
            
                8,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2022
             | 
            
                -0.30 / -1.69%
             |             
            
                16.90
             |           
            
                17.80
             |               
            
                16.00
             |                           
            
                17.50
             | 
            
                16.70
             |                     
            
                9.87
             |                                 
            
                5,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2022
             | 
            
                +0.70 / +4.07%
             |             
            
                17.50
             |           
            
                17.90
             |               
            
                17.50
             |                           
            
                17.90
             | 
            
                17.80
             |                     
            
                10.09
             |                                 
            
                5,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2022
             | 
            
                -0.40 / -2.23%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                16.80
             |                           
            
                17.50
             | 
            
                17.20
             |                     
            
                9.87
             |                                 
            
                15,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2022
             | 
            
                +0.40 / +2.21%
             |             
            
                17.90
             |           
            
                18.50
             |               
            
                17.90
             |                           
            
                18.50
             | 
            
                17.90
             |                     
            
                10.43
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2022
             | 
            
                -1.40 / -7.41%
             |             
            
                19.10
             |           
            
                19.10
             |               
            
                17.00
             |                           
            
                17.50
             | 
            
                18.10
             |                     
            
                9.87
             |                                 
            
                7,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2022
             | 
            
                -0.70 / -3.63%
             |             
            
                19.20
             |           
            
                19.20
             |               
            
                18.60
             |                           
            
                18.60
             | 
            
                18.90
             |                     
            
                10.49
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2022
             | 
            
                -0.30 / -1.55%
             |             
            
                19.40
             |           
            
                19.40
             |               
            
                19.10
             |                           
            
                19.10
             | 
            
                19.30
             |                     
            
                10.77
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2022
             | 
            
                -0.20 / -1.03%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.10
             |                           
            
                19.30
             | 
            
                19.40
             |                     
            
                10.88
             |                                 
            
                11,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2022
             | 
            
                +0.70 / +3.74%
             |             
            
                19.00
             |           
            
                19.70
             |               
            
                19.00
             |                           
            
                19.40
             | 
            
                19.50
             |                     
            
                10.94
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |