| 
                 
                    Closing price on 1/19/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.30 | 
                 
                
                    | High | 
                    4.30 | 
                 
                
                    | Low | 
                    4.30 | 
                     
                
                    | Volume | 
                    400 | 
                                 
                
                    | Split-adjusted Price | 
                    4.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SD1 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/19/2012
             | 
            
                +0.20 / +4.88%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                4.30
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2012
             | 
            
                +0.20 / +5.13%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2012
             | 
            
                -0.10 / -2.50%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                3.90
             |                     
            
                3.90
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2012
             | 
            
                +0.20 / +5.26%
             |             
            
                3.60
             |           
            
                4.00
             |               
            
                3.60
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/13/2012
             | 
            
                -0.20 / -5.00%
             |             
            
                3.80
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                4.00
             |                     
            
                3.80
             |                                 
            
                16,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2012
             | 
            
                -0.20 / -4.76%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2012
             | 
            
                +0.10 / +2.44%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2012
             | 
            
                -0.20 / -4.65%
             |             
            
                4.10
             |           
            
                4.40
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                5,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2012
             | 
            
                +0.10 / +2.38%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                4.30
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/6/2012
             | 
            
                +0.20 / +5.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/5/2012
             | 
            
                -0.10 / -2.44%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                4,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2012
             | 
            
                -0.30 / -6.82%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2012
             | 
            
                +0.10 / +2.33%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.40
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                4.40
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/30/2011
             | 
            
                +0.20 / +4.88%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                4.30
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/29/2011
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2011
             | 
            
                +0.20 / +5.13%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/27/2011
             | 
            
                +0.10 / +2.63%
             |             
            
                3.70
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.90
             | 
            
                3.90
             |                     
            
                3.90
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/26/2011
             | 
            
                -0.20 / -5.00%
             |             
            
                3.80
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.80
             |                     
            
                3.80
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/23/2011
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/22/2011
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/21/2011
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                8,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2011
             | 
            
                -0.20 / -4.76%
             |             
            
                4.00
             |           
            
                4.30
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                4.00
             |                                 
            
                4,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2011
             | 
            
                -0.10 / -2.33%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2011
             | 
            
                +0.10 / +2.38%
             |             
            
                4.00
             |           
            
                4.30
             |               
            
                4.00
             |                           
            
                4.30
             | 
            
                4.20
             |                     
            
                4.30
             |                                 
            
                2,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/15/2011
             | 
            
                -0.30 / -6.67%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                14,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2011
             | 
            
                -0.30 / -6.25%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                4.50
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2011
             | 
            
                -0.30 / -5.88%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.80
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2011
             | 
            
                -0.30 / -5.56%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                5.10
             |                                 
            
                6,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2011
             | 
            
                -0.30 / -5.26%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                10,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2011
             | 
            
                -0.10 / -1.72%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.70
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                5.70
             |                                 
            
                4,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |