| 
                 
                    Closing price on 8/11/2022
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.70 | 
                 
                
                    | High | 
                    4.70 | 
                 
                
                    | Low | 
                    4.50 | 
                     
                
                    | Volume | 
                    57,200 | 
                                 
                
                    | Split-adjusted Price | 
                    4.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD6 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/11/2022
             | 
            
                -0.10 / -2.13%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.64
             |                     
            
                4.60
             |                                 
            
                57,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.60
             |                           
            
                4.70
             | 
            
                4.61
             |                     
            
                4.70
             |                                 
            
                38,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2022
             | 
            
                +0.10 / +2.17%
             |             
            
                4.60
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.61
             |                     
            
                4.70
             |                                 
            
                58,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.59
             |                     
            
                4.60
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.40
             |                           
            
                4.60
             | 
            
                4.51
             |                     
            
                4.60
             |                                 
            
                38,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2022
             | 
            
                +0.10 / +2.22%
             |             
            
                4.60
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.57
             |                     
            
                4.60
             |                                 
            
                58,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.48
             |                     
            
                4.50
             |                                 
            
                78,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2022
             | 
            
                +0.10 / +2.27%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.20
             |                           
            
                4.50
             | 
            
                4.38
             |                     
            
                4.50
             |                                 
            
                90,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2022
             | 
            
                +0.10 / +2.33%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.30
             |                     
            
                4.40
             |                                 
            
                40,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.27
             |                     
            
                4.30
             |                                 
            
                67,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.37
             |                     
            
                4.30
             |                                 
            
                77,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.29
             |                     
            
                4.30
             |                                 
            
                76,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.22
             |                     
            
                4.30
             |                                 
            
                19,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.00
             |                           
            
                4.30
             | 
            
                4.22
             |                     
            
                4.30
             |                                 
            
                58,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2022
             | 
            
                -0.10 / -2.27%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.31
             |                     
            
                4.30
             |                                 
            
                39,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.23
             |                     
            
                4.40
             |                                 
            
                95,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2022
             | 
            
                +0.10 / +2.33%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.32
             |                     
            
                4.40
             |                                 
            
                50,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                4.30
             |                                 
            
                27,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.37
             |                     
            
                4.30
             |                                 
            
                16,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.23
             |                     
            
                4.30
             |                                 
            
                45,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2022
             | 
            
                +0.10 / +2.38%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.19
             |                     
            
                4.30
             |                                 
            
                29,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                33,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2022
             | 
            
                +0.10 / +2.44%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.11
             |                     
            
                4.20
             |                                 
            
                38,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                11,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.16
             |                     
            
                4.10
             |                                 
            
                24,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.01
             |                     
            
                4.10
             |                                 
            
                56,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.07
             |                     
            
                4.10
             |                                 
            
                42,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.02
             |                     
            
                4.10
             |                                 
            
                16,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2022
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.08
             |                     
            
                4.10
             |                                 
            
                40,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2022
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.10
             | 
            
                3.97
             |                     
            
                4.10
             |                                 
            
                15,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |