| 
                 
                    Closing price on 7/26/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    67.50 | 
                 
                
                    | High | 
                    69.20 | 
                 
                
                    | Low | 
                    67.00 | 
                     
                
                    | Volume | 
                    34,120 | 
                                 
                
                    | Split-adjusted Price | 
                    17.29 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
IMP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/26/2017
             | 
            
                +1.40 / +2.07%
             |             
            
                67.50
             |           
            
                69.20
             |               
            
                67.00
             |                           
            
                68.90
             | 
            
                68.38
             |                     
            
                17.29
             |                                 
            
                34,120
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2017
             | 
            
                -0.70 / -1.03%
             |             
            
                67.00
             |           
            
                69.00
             |               
            
                67.00
             |                           
            
                67.50
             | 
            
                67.69
             |                     
            
                16.94
             |                                 
            
                28,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2017
             | 
            
                -2.00 / -2.85%
             |             
            
                70.10
             |           
            
                70.10
             |               
            
                66.10
             |                           
            
                68.20
             | 
            
                68.30
             |                     
            
                17.11
             |                                 
            
                40,850
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2017
             | 
            
                -0.10 / -0.14%
             |             
            
                70.30
             |           
            
                73.00
             |               
            
                70.00
             |                           
            
                70.20
             | 
            
                70.72
             |                     
            
                17.61
             |                                 
            
                48,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2017
             | 
            
                +1.90 / +2.78%
             |             
            
                69.00
             |           
            
                71.00
             |               
            
                69.00
             |                           
            
                70.30
             | 
            
                70.22
             |                     
            
                17.64
             |                                 
            
                50,940
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2017
             | 
            
                +4.40 / +6.88%
             |             
            
                65.00
             |           
            
                68.40
             |               
            
                64.90
             |                           
            
                68.40
             | 
            
                67.35
             |                     
            
                17.16
             |                                 
            
                189,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                64.00
             |           
            
                64.00
             |               
            
                62.60
             |                           
            
                64.00
             | 
            
                63.73
             |                     
            
                16.06
             |                                 
            
                28,870
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2017
             | 
            
                -0.10 / -0.16%
             |             
            
                63.50
             |           
            
                64.10
             |               
            
                63.10
             |                           
            
                64.00
             | 
            
                63.75
             |                     
            
                16.06
             |                                 
            
                10,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2017
             | 
            
                -0.80 / -1.23%
             |             
            
                64.70
             |           
            
                64.70
             |               
            
                63.90
             |                           
            
                64.10
             | 
            
                64.01
             |                     
            
                16.08
             |                                 
            
                32,290
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2017
             | 
            
                0.00 / 0.00%
             |             
            
                64.50
             |           
            
                65.00
             |               
            
                63.50
             |                           
            
                64.90
             | 
            
                64.31
             |                     
            
                16.28
             |                                 
            
                15,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2017
             | 
            
                +0.40 / +0.62%
             |             
            
                65.00
             |           
            
                65.00
             |               
            
                64.00
             |                           
            
                64.90
             | 
            
                64.11
             |                     
            
                16.28
             |                                 
            
                5,350
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2017
             | 
            
                +0.50 / +0.78%
             |             
            
                64.90
             |           
            
                65.90
             |               
            
                64.00
             |                           
            
                64.50
             | 
            
                65.14
             |                     
            
                16.18
             |                                 
            
                28,970
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2017
             | 
            
                0.00 / 0.00%
             |             
            
                64.00
             |           
            
                64.00
             |               
            
                63.00
             |                           
            
                64.00
             | 
            
                63.34
             |                     
            
                16.06
             |                                 
            
                33,330
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2017
             | 
            
                -0.50 / -0.78%
             |             
            
                64.50
             |           
            
                64.50
             |               
            
                64.00
             |                           
            
                64.00
             | 
            
                64.06
             |                     
            
                16.06
             |                                 
            
                14,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2017
             | 
            
                +1.50 / +2.38%
             |             
            
                64.50
             |           
            
                64.50
             |               
            
                63.50
             |                           
            
                64.50
             | 
            
                63.97
             |                     
            
                16.18
             |                                 
            
                34,470
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2017
             | 
            
                -0.20 / -0.32%
             |             
            
                63.50
             |           
            
                63.50
             |               
            
                63.00
             |                           
            
                63.00
             | 
            
                63.05
             |                     
            
                15.81
             |                                 
            
                16,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2017
             | 
            
                -0.30 / -0.47%
             |             
            
                63.50
             |           
            
                63.50
             |               
            
                63.00
             |                           
            
                63.20
             | 
            
                63.05
             |                     
            
                15.86
             |                                 
            
                17,240
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2017
             | 
            
                0.00 / 0.00%
             |             
            
                63.50
             |           
            
                64.10
             |               
            
                60.50
             |                           
            
                63.50
             | 
            
                63.21
             |                     
            
                15.93
             |                                 
            
                18,130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2017
             | 
            
                -1.00 / -1.55%
             |             
            
                64.40
             |           
            
                64.50
             |               
            
                63.00
             |                           
            
                63.50
             | 
            
                63.91
             |                     
            
                15.93
             |                                 
            
                35,720
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2017
             | 
            
                -0.30 / -0.46%
             |             
            
                64.50
             |           
            
                64.70
             |               
            
                64.40
             |                           
            
                64.50
             | 
            
                64.48
             |                     
            
                16.18
             |                                 
            
                812,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2017
             | 
            
                0.00 / 0.00%
             |             
            
                64.80
             |           
            
                65.10
             |               
            
                64.20
             |                           
            
                64.80
             | 
            
                64.76
             |                     
            
                16.26
             |                                 
            
                814,060
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2017
             | 
            
                -0.20 / -0.31%
             |             
            
                65.00
             |           
            
                65.50
             |               
            
                64.50
             |                           
            
                64.80
             | 
            
                64.87
             |                     
            
                16.26
             |                                 
            
                821,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2017
             | 
            
                -1.40 / -2.11%
             |             
            
                66.40
             |           
            
                66.90
             |               
            
                65.00
             |                           
            
                65.00
             | 
            
                65.57
             |                     
            
                16.31
             |                                 
            
                827,450
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2017
             | 
            
                +1.30 / +2.00%
             |             
            
                64.20
             |           
            
                67.50
             |               
            
                64.20
             |                           
            
                66.40
             | 
            
                66.38
             |                     
            
                16.66
             |                                 
            
                841,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2017
             | 
            
                +2.60 / +4.16%
             |             
            
                62.50
             |           
            
                65.80
             |               
            
                62.50
             |                           
            
                65.10
             | 
            
                64.80
             |                     
            
                16.33
             |                                 
            
                828,290
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2017
             | 
            
                +0.20 / +0.32%
             |             
            
                61.60
             |           
            
                63.50
             |               
            
                61.60
             |                           
            
                62.50
             | 
            
                62.28
             |                     
            
                15.68
             |                                 
            
                857,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2017
             | 
            
                -0.20 / -0.32%
             |             
            
                62.40
             |           
            
                62.50
             |               
            
                62.30
             |                           
            
                62.30
             | 
            
                62.44
             |                     
            
                15.63
             |                                 
            
                803,270
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2017
             | 
            
                0.00 / 0.00%
             |             
            
                63.00
             |           
            
                63.00
             |               
            
                62.00
             |                           
            
                62.50
             | 
            
                62.46
             |                     
            
                15.68
             |                                 
            
                825,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2017
             | 
            
                +4.00 / +6.84%
             |             
            
                59.00
             |           
            
                62.50
             |               
            
                58.90
             |                           
            
                62.50
             | 
            
                61.89
             |                     
            
                15.68
             |                                 
            
                947,710
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                58.40
             |           
            
                60.00
             |               
            
                58.40
             |                           
            
                58.50
             | 
            
                58.56
             |                     
            
                14.68
             |                                 
            
                812,020
             |  
            
                 
             |                                                              
             
    
         
    
    
 |