| 
                 
                    Closing price on 9/14/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    15.10 | 
                 
                
                    | High | 
                    15.10 | 
                 
                
                    | Low | 
                    14.30 | 
                     
                
                    | Volume | 
                    564,700 | 
                                 
                
                    | Split-adjusted Price | 
                    13.03 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/14/2016
             | 
            
                -0.80 / -5.30%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.63
             |                     
            
                13.03
             |                                 
            
                564,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2016
             | 
            
                +0.10 / +0.67%
             |             
            
                15.00
             |           
            
                15.20
             |               
            
                14.80
             |                           
            
                15.10
             | 
            
                14.99
             |                     
            
                13.76
             |                                 
            
                352,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2016
             | 
            
                -0.90 / -5.66%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                14.80
             |                           
            
                15.00
             | 
            
                15.45
             |                     
            
                13.67
             |                                 
            
                344,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2016
             | 
            
                +0.10 / +0.63%
             |             
            
                15.80
             |           
            
                17.30
             |               
            
                15.80
             |                           
            
                15.90
             | 
            
                16.04
             |                     
            
                14.49
             |                                 
            
                338,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2016
             | 
            
                +0.50 / +3.27%
             |             
            
                15.30
             |           
            
                16.80
             |               
            
                15.30
             |                           
            
                15.80
             | 
            
                15.94
             |                     
            
                14.40
             |                                 
            
                1,015,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2016
             | 
            
                +0.70 / +4.79%
             |             
            
                14.50
             |           
            
                16.00
             |               
            
                14.30
             |                           
            
                15.30
             | 
            
                14.60
             |                     
            
                13.94
             |                                 
            
                686,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2016
             | 
            
                -0.50 / -3.31%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.00
             |                           
            
                14.60
             | 
            
                14.79
             |                     
            
                13.30
             |                                 
            
                322,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2016
             | 
            
                -1.00 / -6.21%
             |             
            
                16.10
             |           
            
                16.40
             |               
            
                15.00
             |                           
            
                15.10
             | 
            
                15.72
             |                     
            
                13.76
             |                                 
            
                150,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2016
             | 
            
                -1.00 / -5.85%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.00
             |                           
            
                16.10
             | 
            
                16.57
             |                     
            
                14.67
             |                                 
            
                170,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2016
             | 
            
                -0.10 / -0.58%
             |             
            
                17.10
             |           
            
                17.20
             |               
            
                17.00
             |                           
            
                17.10
             | 
            
                17.05
             |                     
            
                15.58
             |                                 
            
                179,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2016
             | 
            
                +0.20 / +1.18%
             |             
            
                16.90
             |           
            
                17.20
             |               
            
                16.80
             |                           
            
                17.20
             | 
            
                16.91
             |                     
            
                15.67
             |                                 
            
                160,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2016
             | 
            
                +0.70 / +4.29%
             |             
            
                16.30
             |           
            
                17.00
             |               
            
                16.30
             |                           
            
                17.00
             | 
            
                16.49
             |                     
            
                15.49
             |                                 
            
                208,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2016
             | 
            
                +0.10 / +0.62%
             |             
            
                16.20
             |           
            
                16.30
             |               
            
                16.20
             |                           
            
                16.30
             | 
            
                16.20
             |                     
            
                14.85
             |                                 
            
                201,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2016
             | 
            
                -0.80 / -4.71%
             |             
            
                16.40
             |           
            
                16.70
             |               
            
                16.20
             |                           
            
                16.20
             | 
            
                16.48
             |                     
            
                14.76
             |                                 
            
                169,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2016
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                16.40
             |                           
            
                17.00
             | 
            
                16.81
             |                     
            
                15.49
             |                                 
            
                205,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2016
             | 
            
                +0.30 / +1.80%
             |             
            
                16.70
             |           
            
                17.00
             |               
            
                16.30
             |                           
            
                17.00
             | 
            
                16.71
             |                     
            
                15.49
             |                                 
            
                246,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2016
             | 
            
                -0.30 / -1.76%
             |             
            
                17.00
             |           
            
                17.10
             |               
            
                16.30
             |                           
            
                16.70
             | 
            
                16.88
             |                     
            
                15.22
             |                                 
            
                191,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2016
             | 
            
                -0.10 / -0.58%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                16.90
             |                           
            
                17.00
             | 
            
                17.10
             |                     
            
                15.49
             |                                 
            
                207,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2016
             | 
            
                -0.60 / -3.39%
             |             
            
                17.70
             |           
            
                17.70
             |               
            
                17.00
             |                           
            
                17.10
             | 
            
                17.47
             |                     
            
                15.58
             |                                 
            
                187,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2016
             | 
            
                -0.30 / -1.67%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                17.70
             |                           
            
                17.70
             | 
            
                17.89
             |                     
            
                16.13
             |                                 
            
                171,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2016
             | 
            
                -0.10 / -0.55%
             |             
            
                18.10
             |           
            
                18.20
             |               
            
                17.90
             |                           
            
                18.00
             | 
            
                18.06
             |                     
            
                16.40
             |                                 
            
                223,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2016
             | 
            
                -0.30 / -1.63%
             |             
            
                18.40
             |           
            
                18.40
             |               
            
                18.10
             |                           
            
                18.10
             | 
            
                18.25
             |                     
            
                16.49
             |                                 
            
                171,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2016
             | 
            
                -0.30 / -1.60%
             |             
            
                18.70
             |           
            
                18.90
             |               
            
                18.40
             |                           
            
                18.40
             | 
            
                18.69
             |                     
            
                16.76
             |                                 
            
                170,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2016
             | 
            
                +0.10 / +0.54%
             |             
            
                18.60
             |           
            
                18.70
             |               
            
                18.60
             |                           
            
                18.70
             | 
            
                18.65
             |                     
            
                17.04
             |                                 
            
                160,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2016
             | 
            
                +0.10 / +0.54%
             |             
            
                18.50
             |           
            
                18.60
             |               
            
                18.40
             |                           
            
                18.60
             | 
            
                18.54
             |                     
            
                16.95
             |                                 
            
                179,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2016
             | 
            
                0.00 / 0.00%
             |             
            
                18.50
             |           
            
                18.70
             |               
            
                18.50
             |                           
            
                18.50
             | 
            
                18.63
             |                     
            
                16.86
             |                                 
            
                166,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2016
             | 
            
                0.00 / 0.00%
             |             
            
                18.50
             |           
            
                18.60
             |               
            
                18.40
             |                           
            
                18.50
             | 
            
                18.51
             |                     
            
                16.86
             |                                 
            
                196,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2016
             | 
            
                -0.10 / -0.54%
             |             
            
                18.60
             |           
            
                18.70
             |               
            
                18.40
             |                           
            
                18.50
             | 
            
                18.54
             |                     
            
                16.86
             |                                 
            
                186,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2016
             | 
            
                -0.10 / -0.53%
             |             
            
                18.70
             |           
            
                18.90
             |               
            
                18.60
             |                           
            
                18.60
             | 
            
                18.73
             |                     
            
                16.95
             |                                 
            
                166,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2016
             | 
            
                -0.10 / -0.53%
             |             
            
                18.80
             |           
            
                18.90
             |               
            
                18.30
             |                           
            
                18.70
             | 
            
                18.64
             |                     
            
                17.04
             |                                 
            
                351,500
             |  
            
                 
             |                                                              
             
    
         
    
    
 |