| 
                 
                    Closing price on 4/25/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    27.60 | 
                 
                
                    | High | 
                    27.90 | 
                 
                
                    | Low | 
                    26.70 | 
                     
                
                    | Volume | 
                    300,400 | 
                                 
                
                    | Split-adjusted Price | 
                    26.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/25/2017
             | 
            
                -0.60 / -2.18%
             |             
            
                27.60
             |           
            
                27.90
             |               
            
                26.70
             |                           
            
                26.90
             | 
            
                27.14
             |                     
            
                26.90
             |                                 
            
                300,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2017
             | 
            
                +1.00 / +3.77%
             |             
            
                26.70
             |           
            
                27.60
             |               
            
                26.00
             |                           
            
                27.50
             | 
            
                26.81
             |                     
            
                27.50
             |                                 
            
                873,690
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2017
             | 
            
                +0.40 / +1.53%
             |             
            
                26.10
             |           
            
                26.70
             |               
            
                26.00
             |                           
            
                26.50
             | 
            
                26.38
             |                     
            
                26.50
             |                                 
            
                681,822
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                26.30
             |           
            
                26.30
             |               
            
                25.30
             |                           
            
                26.10
             | 
            
                26.10
             |                     
            
                26.10
             |                                 
            
                259,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2017
             | 
            
                -0.50 / -1.88%
             |             
            
                26.60
             |           
            
                27.00
             |               
            
                26.00
             |                           
            
                26.10
             | 
            
                26.60
             |                     
            
                26.10
             |                                 
            
                345,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2017
             | 
            
                -0.40 / -1.48%
             |             
            
                27.00
             |           
            
                27.40
             |               
            
                26.50
             |                           
            
                26.60
             | 
            
                26.78
             |                     
            
                26.60
             |                                 
            
                359,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2017
             | 
            
                +0.50 / +1.89%
             |             
            
                26.70
             |           
            
                27.40
             |               
            
                25.00
             |                           
            
                27.00
             | 
            
                26.82
             |                     
            
                27.00
             |                                 
            
                1,156,910
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2017
             | 
            
                +1.50 / +6.00%
             |             
            
                24.80
             |           
            
                26.50
             |               
            
                24.50
             |                           
            
                26.50
             | 
            
                25.00
             |                     
            
                26.50
             |                                 
            
                1,451,142
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2017
             | 
            
                +0.10 / +0.40%
             |             
            
                24.70
             |           
            
                25.30
             |               
            
                24.50
             |                           
            
                25.00
             | 
            
                25.02
             |                     
            
                25.00
             |                                 
            
                313,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2017
             | 
            
                -0.10 / -0.40%
             |             
            
                24.50
             |           
            
                25.30
             |               
            
                24.50
             |                           
            
                24.90
             | 
            
                25.11
             |                     
            
                24.90
             |                                 
            
                380,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2017
             | 
            
                0.00 / 0.00%
             |             
            
                25.10
             |           
            
                25.30
             |               
            
                24.50
             |                           
            
                25.00
             | 
            
                25.00
             |                     
            
                25.00
             |                                 
            
                308,408
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2017
             | 
            
                +0.10 / +0.40%
             |             
            
                24.90
             |           
            
                25.40
             |               
            
                24.50
             |                           
            
                25.00
             | 
            
                25.03
             |                     
            
                25.00
             |                                 
            
                658,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2017
             | 
            
                -0.10 / -0.40%
             |             
            
                25.20
             |           
            
                25.40
             |               
            
                24.20
             |                           
            
                24.90
             | 
            
                24.99
             |                     
            
                24.90
             |                                 
            
                338,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2017
             | 
            
                +0.10 / +0.40%
             |             
            
                24.90
             |           
            
                25.20
             |               
            
                24.00
             |                           
            
                25.00
             | 
            
                25.06
             |                     
            
                25.00
             |                                 
            
                503,022
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2017
             | 
            
                +0.10 / +0.40%
             |             
            
                24.50
             |           
            
                26.80
             |               
            
                24.00
             |                           
            
                24.90
             | 
            
                25.68
             |                     
            
                24.90
             |                                 
            
                664,519
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2017
             | 
            
                +0.10 / +0.40%
             |             
            
                24.30
             |           
            
                25.20
             |               
            
                24.30
             |                           
            
                24.80
             | 
            
                24.88
             |                     
            
                24.80
             |                                 
            
                378,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2017
             | 
            
                -0.40 / -1.59%
             |             
            
                24.80
             |           
            
                25.40
             |               
            
                24.60
             |                           
            
                24.70
             | 
            
                24.96
             |                     
            
                24.70
             |                                 
            
                349,154
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2017
             | 
            
                +0.20 / +0.80%
             |             
            
                24.60
             |           
            
                25.30
             |               
            
                24.60
             |                           
            
                25.10
             | 
            
                25.04
             |                     
            
                25.10
             |                                 
            
                313,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2017
             | 
            
                -0.30 / -1.19%
             |             
            
                25.20
             |           
            
                25.50
             |               
            
                24.80
             |                           
            
                24.90
             | 
            
                25.22
             |                     
            
                24.90
             |                                 
            
                273,630
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2017
             | 
            
                +0.20 / +0.80%
             |             
            
                24.80
             |           
            
                26.00
             |               
            
                24.70
             |                           
            
                25.20
             | 
            
                25.42
             |                     
            
                25.20
             |                                 
            
                622,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2017
             | 
            
                +0.30 / +1.21%
             |             
            
                24.60
             |           
            
                25.40
             |               
            
                24.30
             |                           
            
                25.00
             | 
            
                25.04
             |                     
            
                25.00
             |                                 
            
                439,170
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2017
             | 
            
                +0.40 / +1.65%
             |             
            
                24.30
             |           
            
                24.90
             |               
            
                24.00
             |                           
            
                24.70
             | 
            
                24.30
             |                     
            
                24.70
             |                                 
            
                473,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2017
             | 
            
                -0.40 / -1.62%
             |             
            
                24.50
             |           
            
                24.50
             |               
            
                24.00
             |                           
            
                24.30
             | 
            
                24.27
             |                     
            
                24.30
             |                                 
            
                175,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2017
             | 
            
                -0.10 / -0.40%
             |             
            
                24.40
             |           
            
                25.60
             |               
            
                24.00
             |                           
            
                24.70
             | 
            
                25.12
             |                     
            
                24.70
             |                                 
            
                585,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2017
             | 
            
                +0.30 / +1.22%
             |             
            
                24.20
             |           
            
                25.40
             |               
            
                24.20
             |                           
            
                24.80
             | 
            
                25.09
             |                     
            
                24.80
             |                                 
            
                489,360
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2017
             | 
            
                -0.10 / -0.41%
             |             
            
                24.50
             |           
            
                25.00
             |               
            
                24.40
             |                           
            
                24.50
             | 
            
                24.53
             |                     
            
                24.50
             |                                 
            
                103,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2017
             | 
            
                +0.10 / +0.41%
             |             
            
                24.30
             |           
            
                24.70
             |               
            
                24.00
             |                           
            
                24.60
             | 
            
                24.60
             |                     
            
                24.60
             |                                 
            
                134,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/16/2017
             | 
            
                0.00 / 0.00%
             |             
            
                24.50
             |           
            
                24.70
             |               
            
                24.00
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                24.50
             |                                 
            
                176,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                24.30
             |           
            
                24.80
             |               
            
                24.00
             |                           
            
                24.50
             | 
            
                24.50
             |                     
            
                24.50
             |                                 
            
                221,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2017
             | 
            
                -0.10 / -0.41%
             |             
            
                24.90
             |           
            
                25.50
             |               
            
                24.50
             |                           
            
                24.50
             | 
            
                24.60
             |                     
            
                24.50
             |                                 
            
                305,520
             |  
            
                 
             |                                                              
             
    
         
    
    
 |