| 
                 
                    Closing price on 11/1/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.80 | 
                 
                
                    | High | 
                    3.90 | 
                 
                
                    | Low | 
                    3.80 | 
                     
                
                    | Volume | 
                    21,600 | 
                                 
                
                    | Split-adjusted Price | 
                    3.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/1/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.80
             |                     
            
                3.35
             |                                 
            
                21,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/31/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.81
             |                     
            
                3.35
             |                                 
            
                30,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/30/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.81
             |                     
            
                3.35
             |                                 
            
                27,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/29/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.81
             |                     
            
                3.35
             |                                 
            
                34,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/28/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.82
             |                     
            
                3.35
             |                                 
            
                64,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/25/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.84
             |                     
            
                3.35
             |                                 
            
                43,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/24/2013
             | 
            
                -0.10 / -2.50%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.87
             |                     
            
                3.35
             |                                 
            
                74,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/23/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.97
             |                     
            
                3.43
             |                                 
            
                57,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/22/2013
             | 
            
                -0.30 / -6.98%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.06
             |                     
            
                3.43
             |                                 
            
                121,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/21/2013
             | 
            
                +0.10 / +2.38%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.19
             |                     
            
                3.69
             |                                 
            
                58,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/18/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.21
             |                     
            
                3.61
             |                                 
            
                50,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2013
             | 
            
                +0.30 / +7.69%
             |             
            
                3.90
             |           
            
                4.20
             |               
            
                3.80
             |                           
            
                4.20
             | 
            
                4.03
             |                     
            
                3.61
             |                                 
            
                113,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/16/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.80
             |                     
            
                3.35
             |                                 
            
                15,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.80
             |                     
            
                3.35
             |                                 
            
                10,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.80
             |                     
            
                3.35
             |                                 
            
                40,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.80
             |                     
            
                3.35
             |                                 
            
                25,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                4.00
             |               
            
                3.70
             |                           
            
                3.90
             | 
            
                3.88
             |                     
            
                3.35
             |                                 
            
                94,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.60
             |                           
            
                3.90
             | 
            
                3.81
             |                     
            
                3.35
             |                                 
            
                86,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.81
             |                     
            
                3.35
             |                                 
            
                23,200
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.80
             |                     
            
                3.35
             |                                 
            
                20,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2013
             | 
            
                -0.10 / -2.50%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.81
             |                     
            
                3.35
             |                                 
            
                11,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.91
             |                     
            
                3.43
             |                                 
            
                31,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.90
             |                     
            
                3.43
             |                                 
            
                23,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.93
             |                     
            
                3.43
             |                                 
            
                63,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2013
             | 
            
                +0.10 / +2.56%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                4.00
             | 
            
                3.90
             |                     
            
                3.43
             |                                 
            
                30,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2013
             | 
            
                -0.10 / -2.50%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                3.90
             |                     
            
                3.35
             |                                 
            
                31,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                4.00
             | 
            
                3.89
             |                     
            
                3.43
             |                                 
            
                26,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2013
             | 
            
                +0.20 / +5.26%
             |             
            
                3.70
             |           
            
                4.00
             |               
            
                3.70
             |                           
            
                4.00
             | 
            
                3.84
             |                     
            
                3.43
             |                                 
            
                73,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.80
             |               
            
                3.60
             |                           
            
                3.80
             | 
            
                3.64
             |                     
            
                3.26
             |                                 
            
                22,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.70
             |                     
            
                3.26
             |                                 
            
                20,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |