| 
                 
                    Closing price on 10/20/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.10 | 
                 
                
                    | High | 
                    11.00 | 
                 
                
                    | Low | 
                    10.10 | 
                     
                
                    | Volume | 
                    834,800 | 
                                 
                
                    | Split-adjusted Price | 
                    9.19 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/20/2014
             | 
            
                +0.70 / +7.00%
             |             
            
                10.10
             |           
            
                11.00
             |               
            
                10.10
             |                           
            
                10.70
             | 
            
                10.44
             |                     
            
                9.19
             |                                 
            
                834,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2014
             | 
            
                +0.10 / +1.01%
             |             
            
                9.90
             |           
            
                10.20
             |               
            
                9.90
             |                           
            
                10.00
             | 
            
                10.07
             |                     
            
                8.59
             |                                 
            
                488,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/16/2014
             | 
            
                +0.60 / +6.45%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                10.04
             |                     
            
                8.50
             |                                 
            
                321,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2014
             | 
            
                +0.80 / +9.41%
             |             
            
                8.60
             |           
            
                9.30
             |               
            
                8.60
             |                           
            
                9.30
             | 
            
                9.15
             |                     
            
                7.99
             |                                 
            
                274,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2014
             | 
            
                -0.20 / -2.30%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.50
             |                           
            
                8.50
             | 
            
                8.64
             |                     
            
                7.30
             |                                 
            
                129,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/13/2014
             | 
            
                +0.10 / +1.16%
             |             
            
                8.60
             |           
            
                8.70
             |               
            
                8.50
             |                           
            
                8.70
             | 
            
                8.66
             |                     
            
                7.47
             |                                 
            
                308,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2014
             | 
            
                -0.10 / -1.15%
             |             
            
                8.60
             |           
            
                8.80
             |               
            
                8.60
             |                           
            
                8.60
             | 
            
                8.68
             |                     
            
                7.38
             |                                 
            
                296,700
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2014
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.80
             |               
            
                8.60
             |                           
            
                8.70
             | 
            
                8.69
             |                     
            
                7.47
             |                                 
            
                148,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2014
             | 
            
                0.00 / 0.00%
             |             
            
                8.80
             |           
            
                8.80
             |               
            
                8.60
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                7.47
             |                                 
            
                314,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2014
             | 
            
                -0.20 / -2.25%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.81
             |                     
            
                7.47
             |                                 
            
                150,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2014
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                7.64
             |                                 
            
                226,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2014
             | 
            
                0.00 / 0.00%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                7.64
             |                                 
            
                131,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2014
             | 
            
                +0.20 / +2.30%
             |             
            
                8.70
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.82
             |                     
            
                7.64
             |                                 
            
                178,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2014
             | 
            
                -0.10 / -1.14%
             |             
            
                8.70
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.75
             |                     
            
                7.47
             |                                 
            
                142,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2014
             | 
            
                -0.10 / -1.12%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.80
             | 
            
                8.79
             |                     
            
                7.56
             |                                 
            
                169,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2014
             | 
            
                +0.20 / +2.30%
             |             
            
                8.80
             |           
            
                9.00
             |               
            
                8.70
             |                           
            
                8.90
             | 
            
                8.85
             |                     
            
                7.64
             |                                 
            
                435,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2014
             | 
            
                +0.10 / +1.16%
             |             
            
                8.60
             |           
            
                8.80
             |               
            
                8.60
             |                           
            
                8.70
             | 
            
                8.72
             |                     
            
                7.47
             |                                 
            
                223,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2014
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.60
             |               
            
                8.40
             |                           
            
                8.60
             | 
            
                8.54
             |                     
            
                7.38
             |                                 
            
                154,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2014
             | 
            
                +0.10 / +1.18%
             |             
            
                8.50
             |           
            
                8.60
             |               
            
                8.40
             |                           
            
                8.60
             | 
            
                8.51
             |                     
            
                7.38
             |                                 
            
                140,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2014
             | 
            
                +0.10 / +1.19%
             |             
            
                8.50
             |           
            
                8.60
             |               
            
                8.40
             |                           
            
                8.50
             | 
            
                8.50
             |                     
            
                7.30
             |                                 
            
                182,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2014
             | 
            
                -0.20 / -2.33%
             |             
            
                8.60
             |           
            
                8.80
             |               
            
                8.30
             |                           
            
                8.40
             | 
            
                8.56
             |                     
            
                7.21
             |                                 
            
                693,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2014
             | 
            
                +0.50 / +6.17%
             |             
            
                7.80
             |           
            
                8.70
             |               
            
                7.80
             |                           
            
                8.60
             | 
            
                8.23
             |                     
            
                7.38
             |                                 
            
                829,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2014
             | 
            
                -0.50 / -5.81%
             |             
            
                8.60
             |           
            
                8.60
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.33
             |                     
            
                6.96
             |                                 
            
                178,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2014
             | 
            
                +0.60 / +7.50%
             |             
            
                8.00
             |           
            
                8.60
             |               
            
                8.00
             |                           
            
                8.60
             | 
            
                8.42
             |                     
            
                7.38
             |                                 
            
                904,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2014
             | 
            
                0.00 / 0.00%
             |             
            
                8.00
             |           
            
                8.20
             |               
            
                7.80
             |                           
            
                8.00
             | 
            
                8.02
             |                     
            
                6.87
             |                                 
            
                422,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2014
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.40
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.24
             |                     
            
                6.87
             |                                 
            
                425,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2014
             | 
            
                +0.20 / +2.56%
             |             
            
                8.00
             |           
            
                8.10
             |               
            
                7.80
             |                           
            
                8.00
             | 
            
                7.99
             |                     
            
                6.87
             |                                 
            
                185,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2014
             | 
            
                +0.10 / +1.30%
             |             
            
                7.80
             |           
            
                7.90
             |               
            
                7.60
             |                           
            
                7.80
             | 
            
                7.81
             |                     
            
                6.70
             |                                 
            
                54,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2014
             | 
            
                +0.10 / +1.32%
             |             
            
                7.70
             |           
            
                7.70
             |               
            
                7.40
             |                           
            
                7.70
             | 
            
                7.56
             |                     
            
                6.61
             |                                 
            
                204,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2014
             | 
            
                -0.20 / -2.56%
             |             
            
                7.80
             |           
            
                7.90
             |               
            
                7.50
             |                           
            
                7.60
             | 
            
                7.68
             |                     
            
                6.53
             |                                 
            
                610,100
             |  
            
                 
             |                                                              
             
    
         
    
    
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