| 
                 
                    Closing price on 6/29/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.50 | 
                 
                
                    | High | 
                    3.60 | 
                 
                
                    | Low | 
                    3.40 | 
                     
                
                    | Volume | 
                    5,100 | 
                                 
                
                    | Split-adjusted Price | 
                    3.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD7 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.60
             | 
            
                3.46
             |                     
            
                3.60
             |                                 
            
                5,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2017
             | 
            
                -0.10 / -2.70%
             |             
            
                3.40
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.60
             | 
            
                3.54
             |                     
            
                3.60
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.70
             | 
            
                3.63
             |                     
            
                3.70
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.70
             |               
            
                3.40
             |                           
            
                3.70
             | 
            
                3.58
             |                     
            
                3.70
             |                                 
            
                1,346
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/23/2017
             | 
            
                +0.20 / +5.71%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.70
             |                     
            
                3.70
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2017
             | 
            
                -0.20 / -5.41%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.50
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                3.50
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.70
             |               
            
                3.40
             |                           
            
                3.70
             | 
            
                3.42
             |                     
            
                3.70
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.70
             | 
            
                3.56
             |                     
            
                3.70
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2017
             | 
            
                +0.10 / +2.78%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.60
             |                     
            
                3.70
             |                                 
            
                3,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2017
             | 
            
                -0.10 / -2.70%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.55
             |                     
            
                3.60
             |                                 
            
                11,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.60
             |                     
            
                3.70
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.70
             |                     
            
                3.70
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.70
             |                     
            
                3.70
             |                                 
            
                85,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2017
             | 
            
                +0.10 / +2.78%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.68
             |                     
            
                3.70
             |                                 
            
                31,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.60
             |                     
            
                3.60
             |                                 
            
                1,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2017
             | 
            
                -0.10 / -2.70%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.59
             |                     
            
                3.60
             |                                 
            
                1,746
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.62
             |                     
            
                3.70
             |                                 
            
                5,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2017
             | 
            
                -0.10 / -2.63%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.70
             |                     
            
                3.70
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.70
             |                     
            
                3.80
             |                                 
            
                8,900
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2017
             | 
            
                +0.20 / +5.56%
             |             
            
                3.70
             |           
            
                3.90
             |               
            
                3.60
             |                           
            
                3.80
             | 
            
                3.72
             |                     
            
                3.80
             |                                 
            
                20,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2017
             | 
            
                -0.10 / -2.70%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.60
             |                     
            
                3.60
             |                                 
            
                13,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2017
             | 
            
                +0.10 / +2.78%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.60
             |                     
            
                3.70
             |                                 
            
                3,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2017
             | 
            
                -0.10 / -2.70%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.69
             |                     
            
                3.60
             |                                 
            
                5,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.62
             |                     
            
                3.70
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2017
             | 
            
                -0.10 / -2.63%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.70
             | 
            
                3.57
             |                     
            
                3.70
             |                                 
            
                23,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.80
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.80
             |                     
            
                3.80
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2017
             | 
            
                +0.10 / +2.70%
             |             
            
                3.70
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.70
             |                     
            
                3.80
             |                                 
            
                4,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.60
             |                     
            
                3.70
             |                                 
            
                23,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.70
             |                     
            
                3.70
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2017
             | 
            
                -0.10 / -2.63%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.68
             |                     
            
                3.70
             |                                 
            
                11,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |