| 
                 
                    Closing price on 1/13/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.30 | 
                 
                
                    | High | 
                    6.40 | 
                 
                
                    | Low | 
                    6.20 | 
                     
                
                    | Volume | 
                    207,900 | 
                                 
                
                    | Split-adjusted Price | 
                    5.41 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                12/24/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.60
             |                           
            
                5.80
             | 
            
                5.78
             |                     
            
                4.98
             |                                 
            
                519,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/23/2013
             | 
            
                +0.40 / +7.41%
             |             
            
                5.40
             |           
            
                5.90
             |               
            
                5.30
             |                           
            
                5.80
             | 
            
                5.57
             |                     
            
                4.98
             |                                 
            
                719,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.31
             |                     
            
                4.64
             |                                 
            
                283,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2013
             | 
            
                +0.10 / +1.89%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.33
             |                     
            
                4.64
             |                                 
            
                478,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.25
             |                     
            
                4.55
             |                                 
            
                347,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/17/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                4.55
             |                                 
            
                250,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                4.55
             |                                 
            
                190,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2013
             | 
            
                +0.10 / +1.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.22
             |                     
            
                4.55
             |                                 
            
                350,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2013
             | 
            
                +0.20 / +4.00%
             |             
            
                5.00
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.20
             | 
            
                5.13
             |                     
            
                4.47
             |                                 
            
                245,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2013
             | 
            
                -0.10 / -1.96%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.06
             |                     
            
                4.29
             |                                 
            
                113,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2013
             | 
            
                -0.10 / -1.92%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                4.38
             |                                 
            
                227,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.16
             |                     
            
                4.47
             |                                 
            
                340,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2013
             | 
            
                +0.10 / +1.96%
             |             
            
                5.00
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                5.20
             | 
            
                5.05
             |                     
            
                4.47
             |                                 
            
                255,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2013
             | 
            
                +0.10 / +2.00%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                5.07
             |                     
            
                4.38
             |                                 
            
                267,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2013
             | 
            
                +0.40 / +8.70%
             |             
            
                4.50
             |           
            
                5.00
             |               
            
                4.50
             |                           
            
                5.00
             | 
            
                4.81
             |                     
            
                4.29
             |                                 
            
                580,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2013
             | 
            
                +0.10 / +2.22%
             |             
            
                4.40
             |           
            
                4.60
             |               
            
                4.40
             |                           
            
                4.60
             | 
            
                4.51
             |                     
            
                3.95
             |                                 
            
                489,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.44
             |                     
            
                3.86
             |                                 
            
                229,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |