| 
                 
                    Closing price on 9/29/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.20 | 
                 
                
                    | High | 
                    6.30 | 
                 
                
                    | Low | 
                    6.20 | 
                     
                
                    | Volume | 
                    34,800 | 
                                 
                
                    | Split-adjusted Price | 
                    5.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD2 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/29/2017
             | 
            
                -0.10 / -1.59%
             |             
            
                6.20
             |           
            
                6.30
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.24
             |                     
            
                5.22
             |                                 
            
                34,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/28/2017
             | 
            
                -0.10 / -1.56%
             |             
            
                6.40
             |           
            
                6.50
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.33
             |                     
            
                5.30
             |                                 
            
                20,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/27/2017
             | 
            
                +0.20 / +3.23%
             |             
            
                6.30
             |           
            
                6.40
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.33
             |                     
            
                5.39
             |                                 
            
                22,850
             |            
            
                 
             |                                       
         
    
        
            | 
                9/26/2017
             | 
            
                -0.40 / -6.06%
             |             
            
                6.20
             |           
            
                6.40
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.27
             |                     
            
                5.22
             |                                 
            
                12,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/25/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.60
             |           
            
                6.70
             |               
            
                6.40
             |                           
            
                6.60
             | 
            
                6.59
             |                     
            
                5.55
             |                                 
            
                47,050
             |            
            
                 
             |                                       
         
    
        
            | 
                9/22/2017
             | 
            
                +0.20 / +3.13%
             |             
            
                6.40
             |           
            
                6.80
             |               
            
                6.40
             |                           
            
                6.60
             | 
            
                6.63
             |                     
            
                5.55
             |                                 
            
                88,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/21/2017
             | 
            
                +0.10 / +1.59%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.47
             |                     
            
                5.39
             |                                 
            
                168,730
             |            
            
                 
             |                                       
         
    
        
            | 
                9/20/2017
             | 
            
                +0.50 / +8.62%
             |             
            
                5.90
             |           
            
                6.30
             |               
            
                5.90
             |                           
            
                6.30
             | 
            
                6.22
             |                     
            
                5.30
             |                                 
            
                57,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/19/2017
             | 
            
                -0.10 / -1.69%
             |             
            
                5.60
             |           
            
                5.80
             |               
            
                5.50
             |                           
            
                5.80
             | 
            
                5.64
             |                     
            
                4.88
             |                                 
            
                12,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.50
             |                           
            
                5.90
             | 
            
                5.70
             |                     
            
                4.96
             |                                 
            
                63,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                5.90
             | 
            
                5.88
             |                     
            
                4.96
             |                                 
            
                12,103
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2017
             | 
            
                -0.10 / -1.67%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                5.90
             | 
            
                5.88
             |                     
            
                4.96
             |                                 
            
                28,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                5.95
             |                     
            
                5.05
             |                                 
            
                1,880
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2017
             | 
            
                -0.30 / -4.76%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                5.94
             |                     
            
                5.05
             |                                 
            
                22,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/11/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                5.30
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2017
             | 
            
                +0.20 / +3.28%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.00
             |                           
            
                6.30
             | 
            
                6.00
             |                     
            
                5.30
             |                                 
            
                18,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.05
             |                     
            
                5.13
             |                                 
            
                5,324
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2017
             | 
            
                +0.20 / +3.39%
             |             
            
                6.00
             |           
            
                6.40
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.08
             |                     
            
                5.13
             |                                 
            
                135,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2017
             | 
            
                -0.20 / -3.28%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.99
             |                     
            
                4.96
             |                                 
            
                2,300
             |            
            
                 
             |                                       
         
    
        
            | 
                9/1/2017
             | 
            
                +0.20 / +3.39%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.01
             |                     
            
                5.13
             |                                 
            
                4,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2017
             | 
            
                -0.20 / -3.28%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.95
             |                     
            
                4.96
             |                                 
            
                21,983
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.01
             |                     
            
                5.13
             |                                 
            
                16,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.02
             |                     
            
                5.13
             |                                 
            
                27,267
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2017
             | 
            
                -0.10 / -1.61%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.02
             |                     
            
                5.13
             |                                 
            
                6,416
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2017
             | 
            
                +0.20 / +3.33%
             |             
            
                6.00
             |           
            
                6.20
             |               
            
                6.00
             |                           
            
                6.20
             | 
            
                6.11
             |                     
            
                5.22
             |                                 
            
                23,510
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                5.05
             |                                 
            
                43,955
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                5.05
             |                                 
            
                35,782
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                5.05
             |                                 
            
                31,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                5.97
             |                     
            
                5.05
             |                                 
            
                6,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2017
             | 
            
                +0.20 / +3.45%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                6.00
             | 
            
                5.90
             |                     
            
                5.05
             |                                 
            
                47,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |