| 
                 
                    Closing price on 4/20/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.00 | 
                 
                
                    | High | 
                    5.00 | 
                 
                
                    | Low | 
                    5.00 | 
                     
                
                    | Volume | 
                    900 | 
                                 
                
                    | Split-adjusted Price | 
                    2.73 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/20/2012
             | 
            
                -0.10 / -1.96%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                2.73
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                2.78
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                2.78
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2012
             | 
            
                +0.30 / +6.25%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                2.78
             |                                 
            
                7,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                2.62
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                2.62
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2012
             | 
            
                +0.20 / +4.35%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                2.62
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2012
             | 
            
                +0.30 / +6.98%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                2.51
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                2.35
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2012
             | 
            
                +0.10 / +2.38%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                2.35
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.29
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2012
             | 
            
                -0.20 / -4.55%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                2.29
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2012
             | 
            
                -0.10 / -2.22%
             |             
            
                4.20
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                2.40
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2012
             | 
            
                -0.20 / -4.26%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                2.46
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                2.57
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                2.57
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                2.57
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2012
             | 
            
                -0.20 / -4.08%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                2.57
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2012
             | 
            
                +0.30 / +6.52%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                2.67
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2012
             | 
            
                +0.20 / +4.55%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                2.51
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2012
             | 
            
                -0.60 / -12.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                2.40
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2012
             | 
            
                -0.30 / -5.66%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                2.73
             |                                 
            
                11,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2012
             | 
            
                -0.30 / -5.36%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                2.89
             |                                 
            
                5,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2012
             | 
            
                -0.40 / -6.67%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                3.06
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2012
             | 
            
                -0.40 / -6.25%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.27
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2012
             | 
            
                -0.30 / -4.48%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                3.49
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2012
             | 
            
                +0.40 / +6.35%
             |             
            
                6.80
             |           
            
                6.80
             |               
            
                6.70
             |                           
            
                6.70
             | 
            
                6.70
             |                     
            
                3.66
             |                                 
            
                2,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2012
             | 
            
                +0.30 / +5.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                3.44
             |                                 
            
                18,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2012
             | 
            
                +0.30 / +5.26%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                3.27
             |                                 
            
                29,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2012
             | 
            
                +0.40 / +7.55%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                3.11
             |                                 
            
                19,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |