| 
                 
                    Closing price on 4/12/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.70 | 
                 
                
                    | High | 
                    8.80 | 
                 
                
                    | Low | 
                    8.70 | 
                     
                
                    | Volume | 
                    5,300 | 
                                 
                
                    | Split-adjusted Price | 
                    6.68 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/12/2021
             | 
            
                +0.10 / +1.15%
             |             
            
                8.70
             |           
            
                8.80
             |               
            
                8.70
             |                           
            
                8.80
             | 
            
                8.76
             |                     
            
                6.68
             |                                 
            
                5,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2021
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.74
             |                     
            
                6.61
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2021
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.90
             |               
            
                8.60
             |                           
            
                8.70
             | 
            
                8.71
             |                     
            
                6.61
             |                                 
            
                6,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2021
             | 
            
                +0.20 / +2.35%
             |             
            
                8.50
             |           
            
                8.70
             |               
            
                8.30
             |                           
            
                8.70
             | 
            
                8.48
             |                     
            
                6.61
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2021
             | 
            
                +0.10 / +1.19%
             |             
            
                8.50
             |           
            
                8.50
             |               
            
                8.30
             |                           
            
                8.50
             | 
            
                8.43
             |                     
            
                6.46
             |                                 
            
                6,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2021
             | 
            
                +0.10 / +1.20%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.50
             |                     
            
                6.38
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2021
             | 
            
                0.00 / 0.00%
             |             
            
                8.30
             |           
            
                8.30
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                6.30
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2021
             | 
            
                +0.10 / +1.22%
             |             
            
                8.20
             |           
            
                8.30
             |               
            
                8.20
             |                           
            
                8.30
             | 
            
                8.21
             |                     
            
                6.30
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2021
             | 
            
                0.00 / 0.00%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                6.23
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2021
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.42
             |                     
            
                6.23
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2021
             | 
            
                -0.20 / -2.38%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                8.20
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                6.23
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2021
             | 
            
                -0.70 / -7.69%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                6.38
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2021
             | 
            
                +0.80 / +9.64%
             |             
            
                8.30
             |           
            
                9.10
             |               
            
                8.00
             |                           
            
                9.10
             | 
            
                8.41
             |                     
            
                6.91
             |                                 
            
                7,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2021
             | 
            
                0.00 / 0.00%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.32
             |                     
            
                6.30
             |                                 
            
                5,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2021
             | 
            
                -0.70 / -7.78%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                9.50
             |                     
            
                6.30
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2021
             | 
            
                -0.80 / -8.16%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                9.27
             |                     
            
                6.84
             |                                 
            
                604
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2021
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                7.44
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                10.60
             |           
            
                10.60
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                10.00
             |                     
            
                7.44
             |                                 
            
                1,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2021
             | 
            
                -0.70 / -6.67%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.71
             |                     
            
                7.44
             |                                 
            
                1,622
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2021
             | 
            
                -1.10 / -9.48%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                11.23
             |                     
            
                7.98
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/4/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/3/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2021
             | 
            
                0.00 / 0.00%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                8.81
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
         
    
    
 |