| 
                 
                    Closing price on 3/15/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.30 | 
                 
                
                    | High | 
                    3.30 | 
                 
                
                    | Low | 
                    3.10 | 
                     
                
                    | Volume | 
                    436,690 | 
                                 
                
                    | Split-adjusted Price | 
                    3.10 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/15/2018
             | 
            
                -0.30 / -8.82%
             |             
            
                3.30
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.23
             |                     
            
                3.10
             |                                 
            
                436,690
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2018
             | 
            
                -0.20 / -5.56%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.46
             |                     
            
                3.40
             |                                 
            
                573,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2018
             | 
            
                +0.10 / +2.86%
             |             
            
                3.60
             |           
            
                3.80
             |               
            
                3.40
             |                           
            
                3.60
             | 
            
                3.54
             |                     
            
                3.60
             |                                 
            
                878,251
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2018
             | 
            
                +0.30 / +9.38%
             |             
            
                3.20
             |           
            
                3.50
             |               
            
                3.20
             |                           
            
                3.50
             | 
            
                3.47
             |                     
            
                3.50
             |                                 
            
                1,564,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.20
             | 
            
                3.17
             |                     
            
                3.20
             |                                 
            
                543,430
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2018
             | 
            
                +0.20 / +6.67%
             |             
            
                3.10
             |           
            
                3.20
             |               
            
                3.00
             |                           
            
                3.20
             | 
            
                3.14
             |                     
            
                3.20
             |                                 
            
                418,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2018
             | 
            
                +0.10 / +3.45%
             |             
            
                2.80
             |           
            
                3.10
             |               
            
                2.70
             |                           
            
                3.00
             | 
            
                2.89
             |                     
            
                3.00
             |                                 
            
                433,110
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2018
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.90
             | 
            
                2.78
             |                     
            
                2.90
             |                                 
            
                209,267
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2018
             | 
            
                +0.10 / +3.70%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.79
             |                     
            
                2.80
             |                                 
            
                117,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2018
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.73
             |                     
            
                2.70
             |                                 
            
                369,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.74
             |                     
            
                2.80
             |                                 
            
                156,360
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.78
             |                     
            
                2.80
             |                                 
            
                326,166
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.85
             |                     
            
                2.80
             |                                 
            
                343,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.76
             |                     
            
                2.80
             |                                 
            
                306,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2018
             | 
            
                +0.10 / +3.70%
             |             
            
                2.70
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.79
             |                     
            
                2.80
             |                                 
            
                377,244
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2018
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.73
             |                     
            
                2.70
             |                                 
            
                168,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.77
             |                     
            
                2.80
             |                                 
            
                130,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2018
             | 
            
                -0.30 / -9.68%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                1,239,954
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2018
             | 
            
                -0.30 / -8.82%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                454,600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.10
             |                           
            
                3.40
             | 
            
                3.21
             |                     
            
                3.40
             |                                 
            
                2,511,929
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2018
             | 
            
                +0.30 / +9.68%
             |             
            
                3.10
             |           
            
                3.40
             |               
            
                2.80
             |                           
            
                3.40
             | 
            
                2.93
             |                     
            
                3.40
             |                                 
            
                5,636,180
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                3.20
             |               
            
                2.80
             |                           
            
                3.10
             | 
            
                2.91
             |                     
            
                3.10
             |                                 
            
                430,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2018
             | 
            
                -0.30 / -8.82%
             |             
            
                3.20
             |           
            
                3.20
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                433,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.10
             |                           
            
                3.40
             | 
            
                3.14
             |                     
            
                3.40
             |                                 
            
                2,488,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2018
             | 
            
                -0.30 / -8.11%
             |             
            
                3.60
             |           
            
                3.90
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.52
             |                     
            
                3.40
             |                                 
            
                4,593,519
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2018
             | 
            
                -0.40 / -9.76%
             |             
            
                4.10
             |           
            
                4.40
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.71
             |                     
            
                3.70
             |                                 
            
                3,931,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2018
             | 
            
                +0.30 / +7.89%
             |             
            
                3.70
             |           
            
                4.10
             |               
            
                3.60
             |                           
            
                4.10
             | 
            
                4.01
             |                     
            
                4.10
             |                                 
            
                4,408,480
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2018
             | 
            
                -0.10 / -2.56%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.60
             |                           
            
                3.80
             | 
            
                3.64
             |                     
            
                3.80
             |                                 
            
                1,095,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2018
             | 
            
                -0.40 / -9.30%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                3.90
             |                     
            
                3.90
             |                                 
            
                5,976,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2018
             | 
            
                -0.40 / -8.51%
             |             
            
                4.60
             |           
            
                4.90
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.40
             |                     
            
                4.30
             |                                 
            
                1,344,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |