| 
                 
                    Closing price on 9/6/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.00 | 
                 
                
                    | High | 
                    6.60 | 
                 
                
                    | Low | 
                    6.00 | 
                     
                
                    | Volume | 
                    1,939,000 | 
                                 
                
                    | Split-adjusted Price | 
                    4.39 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
XMC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.60
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                4.39
             |                                 
            
                1,939,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                4.39
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2013
             | 
            
                -0.40 / -6.25%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                4.39
             |                                 
            
                10,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.68
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.68
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.68
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.68
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2013
             | 
            
                +0.20 / +3.23%
             |             
            
                6.30
             |           
            
                6.40
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.34
             |                     
            
                4.68
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                4.53
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                4.53
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                4.53
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                4.53
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2013
             | 
            
                -0.10 / -1.59%
             |             
            
                6.10
             |           
            
                6.20
             |               
            
                6.10
             |                           
            
                6.20
             | 
            
                6.10
             |                     
            
                4.53
             |                                 
            
                2,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                4.61
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                4.53
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2013
             | 
            
                +0.10 / +1.64%
             |             
            
                6.10
             |           
            
                6.20
             |               
            
                6.10
             |                           
            
                6.20
             | 
            
                6.17
             |                     
            
                4.53
             |                                 
            
                3,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2013
             | 
            
                -0.30 / -4.69%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                5.80
             |                           
            
                6.10
             | 
            
                6.05
             |                     
            
                4.46
             |                                 
            
                9,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.40
             |               
            
                6.30
             |                           
            
                6.40
             | 
            
                6.38
             |                     
            
                4.68
             |                                 
            
                5,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.68
             |                                 
            
                8,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                6.40
             |           
            
                6.40
             |               
            
                6.40
             |                           
            
                6.40
             | 
            
                6.40
             |                     
            
                4.68
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2013
             | 
            
                +0.40 / +6.67%
             |             
            
                6.20
             |           
            
                6.50
             |               
            
                6.00
             |                           
            
                6.40
             | 
            
                6.19
             |                     
            
                4.68
             |                                 
            
                15,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2013
             | 
            
                +0.10 / +1.69%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                6.00
             |                           
            
                6.00
             | 
            
                6.00
             |                     
            
                4.39
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                4.31
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                4.31
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                4.31
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                4.31
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2013
             | 
            
                +0.50 / +9.26%
             |             
            
                4.90
             |           
            
                5.90
             |               
            
                4.90
             |                           
            
                5.90
             | 
            
                5.10
             |                     
            
                4.31
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                3.95
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.52
             |                     
            
                3.95
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                4.31
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
         
    
    
 |