| 
                 
                    Closing price on 6/11/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    7.50 | 
                 
                
                    | High | 
                    7.70 | 
                 
                
                    | Low | 
                    7.50 | 
                     
                
                    | Volume | 
                    89,200 | 
                                 
                
                    | Split-adjusted Price | 
                    2.26 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
EBS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/11/2012
             | 
            
                +0.10 / +1.33%
             |             
            
                7.50
             |           
            
                7.70
             |               
            
                7.50
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                2.26
             |                                 
            
                89,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.70
             |           
            
                7.70
             |               
            
                7.40
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.23
             |                                 
            
                242,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2012
             | 
            
                +0.20 / +2.74%
             |             
            
                7.40
             |           
            
                7.70
             |               
            
                7.40
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.23
             |                                 
            
                225,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.30
             |           
            
                7.40
             |               
            
                7.10
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                2.17
             |                                 
            
                86,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2012
             | 
            
                +0.30 / +4.29%
             |             
            
                6.80
             |           
            
                7.30
             |               
            
                6.80
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                2.17
             |                                 
            
                108,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2012
             | 
            
                -0.40 / -5.41%
             |             
            
                7.40
             |           
            
                7.50
             |               
            
                7.00
             |                           
            
                7.00
             | 
            
                7.00
             |                     
            
                2.08
             |                                 
            
                328,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.50
             |           
            
                7.50
             |               
            
                7.30
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                2.20
             |                                 
            
                148,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2012
             | 
            
                -0.30 / -3.90%
             |             
            
                7.60
             |           
            
                7.60
             |               
            
                7.40
             |                           
            
                7.40
             | 
            
                7.40
             |                     
            
                2.20
             |                                 
            
                186,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2012
             | 
            
                +0.10 / +1.32%
             |             
            
                7.70
             |           
            
                7.80
             |               
            
                7.60
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                2.29
             |                                 
            
                89,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.70
             |           
            
                7.70
             |               
            
                7.50
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                2.26
             |                                 
            
                92,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2012
             | 
            
                -0.20 / -2.56%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                7.60
             |                           
            
                7.60
             | 
            
                7.60
             |                     
            
                2.26
             |                                 
            
                158,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2012
             | 
            
                +0.50 / +6.85%
             |             
            
                7.60
             |           
            
                7.80
             |               
            
                7.50
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                2.32
             |                                 
            
                183,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2012
             | 
            
                0.00 / 0.00%
             |             
            
                7.20
             |           
            
                7.40
             |               
            
                7.00
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                2.17
             |                                 
            
                130,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2012
             | 
            
                -0.40 / -5.19%
             |             
            
                7.60
             |           
            
                7.70
             |               
            
                7.20
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                2.17
             |                                 
            
                227,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2012
             | 
            
                -0.30 / -3.75%
             |             
            
                8.40
             |           
            
                8.50
             |               
            
                7.60
             |                           
            
                7.70
             | 
            
                7.70
             |                     
            
                2.29
             |                                 
            
                199,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2012
             | 
            
                +0.50 / +6.67%
             |             
            
                7.50
             |           
            
                8.00
             |               
            
                7.50
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                2.38
             |                                 
            
                112,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2012
             | 
            
                -0.30 / -3.85%
             |             
            
                7.50
             |           
            
                7.70
             |               
            
                7.30
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.23
             |                                 
            
                126,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2012
             | 
            
                +0.30 / +4.00%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                7.80
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                2.32
             |                                 
            
                305,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2012
             | 
            
                +0.40 / +5.63%
             |             
            
                7.20
             |           
            
                7.50
             |               
            
                7.00
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.23
             |                                 
            
                406,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2012
             | 
            
                -0.40 / -5.33%
             |             
            
                7.30
             |           
            
                7.70
             |               
            
                7.00
             |                           
            
                7.10
             | 
            
                7.10
             |                     
            
                2.11
             |                                 
            
                284,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2012
             | 
            
                -0.50 / -6.25%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                7.50
             |                           
            
                7.50
             | 
            
                7.50
             |                     
            
                2.23
             |                                 
            
                451,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2012
             | 
            
                -0.30 / -3.61%
             |             
            
                8.30
             |           
            
                8.40
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                2.38
             |                                 
            
                220,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2012
             | 
            
                +0.10 / +1.22%
             |             
            
                8.30
             |           
            
                8.50
             |               
            
                8.20
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                2.47
             |                                 
            
                339,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2012
             | 
            
                -0.10 / -1.20%
             |             
            
                8.20
             |           
            
                8.40
             |               
            
                8.10
             |                           
            
                8.20
             | 
            
                8.20
             |                     
            
                2.44
             |                                 
            
                240,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2012
             | 
            
                -0.30 / -3.49%
             |             
            
                8.70
             |           
            
                8.90
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.30
             |                     
            
                2.47
             |                                 
            
                533,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2012
             | 
            
                +0.60 / +7.50%
             |             
            
                8.30
             |           
            
                8.60
             |               
            
                8.10
             |                           
            
                8.60
             | 
            
                8.60
             |                     
            
                2.56
             |                                 
            
                506,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.00
             |           
            
                8.30
             |               
            
                7.90
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                2.38
             |                                 
            
                409,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2012
             | 
            
                -0.10 / -1.23%
             |             
            
                8.20
             |           
            
                8.20
             |               
            
                7.80
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                2.38
             |                                 
            
                194,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2012
             | 
            
                +0.30 / +3.85%
             |             
            
                7.80
             |           
            
                8.30
             |               
            
                7.60
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                2.41
             |                                 
            
                592,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2012
             | 
            
                0.00 / 0.00%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                7.60
             |                           
            
                7.80
             | 
            
                7.80
             |                     
            
                2.32
             |                                 
            
                253,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |