| 
                 
                    Closing price on 6/3/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.20 | 
                 
                
                    | High | 
                    1.30 | 
                 
                
                    | Low | 
                    1.10 | 
                     
                
                    | Volume | 
                    80,800 | 
                                 
                
                    | Split-adjusted Price | 
                    1.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/3/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.20
             |           
            
                1.30
             |               
            
                1.10
             |                           
            
                1.20
             | 
            
                1.20
             |                     
            
                1.20
             |                                 
            
                80,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2019
             | 
            
                -0.10 / -7.69%
             |             
            
                1.30
             |           
            
                1.30
             |               
            
                1.20
             |                           
            
                1.20
             | 
            
                1.20
             |                     
            
                1.20
             |                                 
            
                111,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.30
             |           
            
                1.30
             |               
            
                1.20
             |                           
            
                1.30
             | 
            
                1.21
             |                     
            
                1.30
             |                                 
            
                679,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.30
             |           
            
                1.30
             |               
            
                1.20
             |                           
            
                1.30
             | 
            
                1.22
             |                     
            
                1.30
             |                                 
            
                90,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2019
             | 
            
                +0.10 / +8.33%
             |             
            
                1.20
             |           
            
                1.30
             |               
            
                1.20
             |                           
            
                1.30
             | 
            
                1.24
             |                     
            
                1.30
             |                                 
            
                243,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2019
             | 
            
                -0.10 / -7.69%
             |             
            
                1.30
             |           
            
                1.40
             |               
            
                1.20
             |                           
            
                1.20
             | 
            
                1.29
             |                     
            
                1.20
             |                                 
            
                152,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2019
             | 
            
                -0.10 / -7.14%
             |             
            
                1.30
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.30
             | 
            
                1.30
             |                     
            
                1.30
             |                                 
            
                219,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.40
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.40
             | 
            
                1.31
             |                     
            
                1.40
             |                                 
            
                234,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2019
             | 
            
                +0.10 / +7.69%
             |             
            
                1.20
             |           
            
                1.40
             |               
            
                1.20
             |                           
            
                1.40
             | 
            
                1.32
             |                     
            
                1.40
             |                                 
            
                101,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.30
             |           
            
                1.40
             |               
            
                1.20
             |                           
            
                1.30
             | 
            
                1.30
             |                     
            
                1.30
             |                                 
            
                336,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2019
             | 
            
                -0.10 / -7.14%
             |             
            
                1.30
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.30
             | 
            
                1.30
             |                     
            
                1.30
             |                                 
            
                354,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2019
             | 
            
                +0.10 / +7.69%
             |             
            
                1.30
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.40
             | 
            
                1.30
             |                     
            
                1.40
             |                                 
            
                160,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2019
             | 
            
                -0.10 / -7.14%
             |             
            
                1.40
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.30
             | 
            
                1.31
             |                     
            
                1.30
             |                                 
            
                338,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.40
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.40
             | 
            
                1.33
             |                     
            
                1.40
             |                                 
            
                103,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2019
             | 
            
                -0.10 / -6.67%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.40
             |                           
            
                1.40
             | 
            
                1.40
             |                     
            
                1.40
             |                                 
            
                263,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2019
             | 
            
                +0.10 / +7.14%
             |             
            
                1.40
             |           
            
                1.50
             |               
            
                1.30
             |                           
            
                1.50
             | 
            
                1.37
             |                     
            
                1.50
             |                                 
            
                457,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.40
             |           
            
                1.40
             |               
            
                1.30
             |                           
            
                1.40
             | 
            
                1.38
             |                     
            
                1.40
             |                                 
            
                192,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.30
             |                           
            
                1.40
             | 
            
                1.40
             |                     
            
                1.40
             |                                 
            
                448,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2019
             | 
            
                -0.10 / -6.67%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.40
             |                           
            
                1.40
             | 
            
                1.47
             |                     
            
                1.40
             |                                 
            
                181,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.50
             |           
            
                1.60
             |               
            
                1.40
             |                           
            
                1.50
             | 
            
                1.50
             |                     
            
                1.50
             |                                 
            
                76,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2019
             | 
            
                -0.10 / -6.25%
             |             
            
                1.60
             |           
            
                1.60
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.50
             |                     
            
                1.50
             |                                 
            
                1,005,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2019
             | 
            
                +0.10 / +6.67%
             |             
            
                1.60
             |           
            
                1.60
             |               
            
                1.50
             |                           
            
                1.60
             | 
            
                1.55
             |                     
            
                1.60
             |                                 
            
                137,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2019
             | 
            
                -0.10 / -6.25%
             |             
            
                1.60
             |           
            
                1.60
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.56
             |                     
            
                1.50
             |                                 
            
                60,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.50
             |                           
            
                1.60
             | 
            
                1.60
             |                     
            
                1.60
             |                                 
            
                231,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2019
             | 
            
                -0.10 / -5.88%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.61
             |                     
            
                1.60
             |                                 
            
                212,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2019
             | 
            
                +0.10 / +6.25%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.50
             |                           
            
                1.70
             | 
            
                1.60
             |                     
            
                1.70
             |                                 
            
                287,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.50
             |                           
            
                1.60
             | 
            
                1.62
             |                     
            
                1.60
             |                                 
            
                175,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2019
             | 
            
                -0.10 / -5.88%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.60
             |                     
            
                1.60
             |                                 
            
                348,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2019
             | 
            
                +0.10 / +6.25%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.60
             |                     
            
                1.70
             |                                 
            
                195,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.60
             |                     
            
                1.60
             |                                 
            
                178,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |