| 
                 
                    Closing price on 8/18/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.00 | 
                 
                
                    | High | 
                    2.30 | 
                 
                
                    | Low | 
                    2.00 | 
                     
                
                    | Volume | 
                    713,400 | 
                                 
                
                    | Split-adjusted Price | 
                    2.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/18/2021
             | 
            
                +0.30 / +15.00%
             |             
            
                2.00
             |           
            
                2.30
             |               
            
                2.00
             |                           
            
                2.30
             | 
            
                2.20
             |                     
            
                2.30
             |                                 
            
                713,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                16,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                38,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                52,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2021
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                48,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2021
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                88,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                51,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                11,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2021
             | 
            
                +0.10 / +4.76%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.00
             |                           
            
                2.20
             | 
            
                2.10
             |                     
            
                2.20
             |                                 
            
                44,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2021
             | 
            
                +0.20 / +10.00%
             |             
            
                2.00
             |           
            
                2.30
             |               
            
                2.00
             |                           
            
                2.20
             | 
            
                2.10
             |                     
            
                2.20
             |                                 
            
                94,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2021
             | 
            
                +0.10 / +5.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                58,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                25,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2021
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                15,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2021
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                12,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2021
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                22,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/28/2021
             | 
            
                -0.10 / -5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                2.00
             |                     
            
                1.90
             |                                 
            
                12,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                36,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2021
             | 
            
                +0.10 / +5.26%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                77,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2021
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                1.90
             |                     
            
                2.00
             |                                 
            
                30,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/22/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                16,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/21/2021
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                18,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2021
             | 
            
                +0.10 / +5.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                25,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2021
             | 
            
                -0.10 / -4.76%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                21,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2021
             | 
            
                -0.10 / -4.55%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                2.10
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                6,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/15/2021
             | 
            
                +0.10 / +4.76%
             |             
            
                2.00
             |           
            
                2.20
             |               
            
                1.90
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                130,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/14/2021
             | 
            
                -0.10 / -4.55%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                14,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/13/2021
             | 
            
                +0.20 / +10.00%
             |             
            
                2.00
             |           
            
                2.20
             |               
            
                2.00
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                37,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/12/2021
             | 
            
                -0.20 / -9.09%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                79,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/9/2021
             | 
            
                0.00 / 0.00%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.10
             |                           
            
                2.30
             | 
            
                2.20
             |                     
            
                2.30
             |                                 
            
                59,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/8/2021
             | 
            
                +0.10 / +4.76%
             |             
            
                2.10
             |           
            
                2.30
             |               
            
                2.10
             |                           
            
                2.20
             | 
            
                2.26
             |                     
            
                2.20
             |                                 
            
                33,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |