| 
                 
                    Closing price on 1/22/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.00 | 
                 
                
                    | High | 
                    9.10 | 
                 
                
                    | Low | 
                    8.90 | 
                     
                
                    | Volume | 
                    3,000 | 
                                 
                
                    | Split-adjusted Price | 
                    5.13 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/22/2021
             | 
            
                +0.10 / +1.11%
             |             
            
                9.00
             |           
            
                9.10
             |               
            
                8.90
             |                           
            
                9.10
             | 
            
                9.00
             |                     
            
                5.13
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2021
             | 
            
                +0.30 / +3.37%
             |             
            
                9.00
             |           
            
                9.20
             |               
            
                8.60
             |                           
            
                9.20
             | 
            
                8.95
             |                     
            
                5.19
             |                                 
            
                6,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2021
             | 
            
                +0.20 / +2.27%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                9.00
             | 
            
                8.90
             |                     
            
                5.07
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2021
             | 
            
                -0.80 / -8.60%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                8.10
             |                           
            
                8.50
             | 
            
                8.82
             |                     
            
                4.79
             |                                 
            
                10,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2021
             | 
            
                -0.30 / -3.16%
             |             
            
                9.30
             |           
            
                9.50
             |               
            
                9.20
             |                           
            
                9.20
             | 
            
                9.27
             |                     
            
                5.19
             |                                 
            
                4,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2021
             | 
            
                -0.90 / -9.00%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.10
             |                           
            
                9.10
             | 
            
                9.46
             |                     
            
                5.13
             |                                 
            
                26,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2021
             | 
            
                -0.30 / -2.65%
             |             
            
                10.00
             |           
            
                11.00
             |               
            
                9.80
             |                           
            
                11.00
             | 
            
                9.99
             |                     
            
                6.20
             |                                 
            
                16,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2021
             | 
            
                -0.50 / -4.39%
             |             
            
                11.40
             |           
            
                11.40
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                11.30
             |                     
            
                6.15
             |                                 
            
                6,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2021
             | 
            
                +0.30 / +2.70%
             |             
            
                11.40
             |           
            
                12.00
             |               
            
                11.00
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                6.43
             |                                 
            
                7,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2021
             | 
            
                +1.40 / +14.29%
             |             
            
                10.00
             |           
            
                11.20
             |               
            
                10.00
             |                           
            
                11.20
             | 
            
                11.15
             |                     
            
                6.31
             |                                 
            
                17,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2021
             | 
            
                +1.20 / +13.95%
             |             
            
                9.70
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.76
             |                     
            
                5.53
             |                                 
            
                14,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2021
             | 
            
                -0.20 / -2.27%
             |             
            
                8.60
             |           
            
                8.60
             |               
            
                8.60
             |                           
            
                8.60
             | 
            
                8.60
             |                     
            
                4.85
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2021
             | 
            
                +0.40 / +4.65%
             |             
            
                8.40
             |           
            
                9.30
             |               
            
                7.40
             |                           
            
                9.00
             | 
            
                8.76
             |                     
            
                5.07
             |                                 
            
                16,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2021
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.60
             |               
            
                8.60
             |                           
            
                8.60
             | 
            
                8.60
             |                     
            
                4.85
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2021
             | 
            
                +1.00 / +12.50%
             |             
            
                8.50
             |           
            
                9.00
             |               
            
                8.50
             |                           
            
                9.00
             | 
            
                8.57
             |                     
            
                5.07
             |                                 
            
                25,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2020
             | 
            
                0.00 / 0.00%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                4.51
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2020
             | 
            
                +0.50 / +6.67%
             |             
            
                7.80
             |           
            
                8.20
             |               
            
                7.80
             |                           
            
                8.00
             | 
            
                8.04
             |                     
            
                4.51
             |                                 
            
                9,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2020
             | 
            
                +0.90 / +13.04%
             |             
            
                6.90
             |           
            
                7.80
             |               
            
                6.90
             |                           
            
                7.80
             | 
            
                7.46
             |                     
            
                4.40
             |                                 
            
                4,514,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2020
             | 
            
                +0.20 / +2.99%
             |             
            
                6.70
             |           
            
                6.90
             |               
            
                6.70
             |                           
            
                6.90
             | 
            
                6.90
             |                     
            
                3.89
             |                                 
            
                5,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2020
             | 
            
                +0.10 / +1.52%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                3.78
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2020
             | 
            
                +0.20 / +3.08%
             |             
            
                6.60
             |           
            
                6.70
             |               
            
                6.60
             |                           
            
                6.70
             | 
            
                6.64
             |                     
            
                3.78
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/23/2020
             | 
            
                +0.30 / +4.84%
             |             
            
                6.50
             |           
            
                6.50
             |               
            
                6.50
             |                           
            
                6.50
             | 
            
                6.50
             |                     
            
                3.66
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2020
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                6.40
             |               
            
                5.70
             |                           
            
                6.30
             | 
            
                6.16
             |                     
            
                3.55
             |                                 
            
                6,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2020
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                3.55
             |                                 
            
                3,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2020
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                3.55
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2020
             | 
            
                +0.30 / +4.92%
             |             
            
                6.10
             |           
            
                6.40
             |               
            
                6.10
             |                           
            
                6.40
             | 
            
                6.33
             |                     
            
                3.61
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/16/2020
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                3.44
             |                                 
            
                5,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2020
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                3.44
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2020
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                6.10
             |               
            
                5.30
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                3.44
             |                                 
            
                6,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2020
             | 
            
                -0.80 / -13.33%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                6.11
             |                     
            
                2.93
             |                                 
            
                3,500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |