| 
                 
                    Closing price on 2/14/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.70 | 
                 
                
                    | High | 
                    7.00 | 
                 
                
                    | Low | 
                    6.70 | 
                     
                
                    | Volume | 
                    336,200 | 
                                 
                
                    | Split-adjusted Price | 
                    6.01 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/14/2014
             | 
            
                +0.30 / +4.48%
             |             
            
                6.70
             |           
            
                7.00
             |               
            
                6.70
             |                           
            
                7.00
             | 
            
                6.84
             |                     
            
                6.01
             |                                 
            
                336,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2014
             | 
            
                +0.20 / +3.08%
             |             
            
                6.50
             |           
            
                7.00
             |               
            
                6.50
             |                           
            
                6.70
             | 
            
                6.62
             |                     
            
                5.75
             |                                 
            
                309,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2014
             | 
            
                +0.20 / +3.17%
             |             
            
                6.30
             |           
            
                6.50
             |               
            
                6.30
             |                           
            
                6.50
             | 
            
                6.33
             |                     
            
                5.58
             |                                 
            
                213,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2014
             | 
            
                +0.10 / +1.61%
             |             
            
                6.20
             |           
            
                6.40
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.26
             |                     
            
                5.41
             |                                 
            
                141,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.10
             |                           
            
                6.20
             | 
            
                6.20
             |                     
            
                5.32
             |                                 
            
                82,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                6.10
             |                           
            
                6.20
             | 
            
                6.18
             |                     
            
                5.32
             |                                 
            
                91,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2014
             | 
            
                +0.10 / +1.64%
             |             
            
                6.10
             |           
            
                6.20
             |               
            
                6.10
             |                           
            
                6.20
             | 
            
                6.16
             |                     
            
                5.32
             |                                 
            
                109,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.00
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                5.24
             |                                 
            
                104,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/24/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                5.24
             |                                 
            
                95,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/23/2014
             | 
            
                +0.10 / +1.67%
             |             
            
                6.00
             |           
            
                6.20
             |               
            
                5.90
             |                           
            
                6.10
             | 
            
                6.04
             |                     
            
                5.24
             |                                 
            
                168,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2014
             | 
            
                -0.10 / -1.64%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                5.50
             |                           
            
                6.00
             | 
            
                6.07
             |                     
            
                5.15
             |                                 
            
                287,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.10
             |           
            
                6.20
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.14
             |                     
            
                5.24
             |                                 
            
                134,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2014
             | 
            
                -0.20 / -3.17%
             |             
            
                6.30
             |           
            
                6.40
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.21
             |                     
            
                5.24
             |                                 
            
                150,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                5.41
             |                                 
            
                180,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.40
             |               
            
                6.10
             |                           
            
                6.30
             | 
            
                6.27
             |                     
            
                5.41
             |                                 
            
                380,600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.50
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                5.41
             |                                 
            
                220,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.24
             |                     
            
                5.41
             |                                 
            
                206,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.40
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.32
             |                     
            
                5.41
             |                                 
            
                207,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2014
             | 
            
                +0.10 / +1.61%
             |             
            
                6.20
             |           
            
                6.30
             |               
            
                6.20
             |                           
            
                6.30
             | 
            
                6.23
             |                     
            
                5.41
             |                                 
            
                216,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2014
             | 
            
                +0.20 / +3.33%
             |             
            
                6.00
             |           
            
                6.60
             |               
            
                5.90
             |                           
            
                6.20
             | 
            
                6.09
             |                     
            
                5.32
             |                                 
            
                499,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2014
             | 
            
                0.00 / 0.00%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.90
             |                           
            
                6.00
             | 
            
                5.96
             |                     
            
                5.15
             |                                 
            
                193,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2014
             | 
            
                +0.10 / +1.69%
             |             
            
                5.90
             |           
            
                6.10
             |               
            
                5.80
             |                           
            
                6.00
             | 
            
                5.94
             |                     
            
                5.15
             |                                 
            
                376,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2014
             | 
            
                +0.10 / +1.72%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.70
             |                           
            
                5.90
             | 
            
                5.83
             |                     
            
                5.07
             |                                 
            
                310,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2014
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.81
             |                     
            
                4.98
             |                                 
            
                255,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2014
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.83
             |                     
            
                4.98
             |                                 
            
                260,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2013
             | 
            
                +0.10 / +1.75%
             |             
            
                5.70
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.80
             | 
            
                5.70
             |                     
            
                4.98
             |                                 
            
                239,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2013
             | 
            
                -0.10 / -1.72%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                4.89
             |                                 
            
                362,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2013
             | 
            
                -0.20 / -3.33%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                5.80
             | 
            
                5.87
             |                     
            
                4.98
             |                                 
            
                246,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2013
             | 
            
                +0.10 / +1.69%
             |             
            
                5.90
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                6.00
             | 
            
                5.93
             |                     
            
                5.15
             |                                 
            
                429,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2013
             | 
            
                +0.10 / +1.72%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.70
             |                           
            
                5.90
             | 
            
                5.82
             |                     
            
                5.07
             |                                 
            
                783,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |