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            | 
                    Closing price on 6/1/2017
                 |  |  
    
        |           
                
                    | Open | 56.90 |  
                    | High | 57.50 |  
                    | Low | 56.80 |  
                    | Volume | 803,740 |  
                    | Split-adjusted Price | 14.28 |  
                
             | 
 |  IMP Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/1/2017 | -0.30 / -0.52% | 56.90 | 57.50 | 56.80 | 56.90 | 57.26 | 14.28 | 803,740 |   |  
            | 5/31/2017 | +0.60 / +1.06% | 56.80 | 57.30 | 56.70 | 57.20 | 56.96 | 14.35 | 800,850 |   |  			
            | 5/30/2017 | -0.30 / -0.53% | 56.50 | 57.00 | 56.50 | 56.60 | 56.68 | 14.20 | 816,190 |   |  
            | 5/29/2017 | -0.30 / -0.52% | 57.20 | 57.40 | 56.90 | 56.90 | 57.00 | 14.28 | 810,000 |   |  			
            | 5/26/2017 | +0.20 / +0.35% | 56.10 | 57.40 | 56.10 | 57.20 | 56.97 | 14.35 | 807,520 |   |  
            | 5/25/2017 | -0.10 / -0.18% | 57.10 | 57.20 | 56.20 | 57.00 | 56.88 | 14.30 | 818,500 |   |  			
            | 5/24/2017 | -4.80 / -7.75% | 58.50 | 58.50 | 57.10 | 57.10 | 57.87 | 14.33 | 814,490 |   |  
            | 5/23/2017 | -0.10 / -0.16% | 61.80 | 62.30 | 61.30 | 61.90 | 61.89 | 13.94 | 801,070 |   |  			
            | 5/22/2017 | +0.10 / +0.16% | 61.90 | 62.50 | 61.20 | 62.00 | 61.84 | 13.96 | 806,820 |   |  
            | 5/19/2017 | +0.90 / +1.48% | 61.50 | 62.00 | 61.50 | 61.90 | 61.69 | 13.94 | 807,220 |   |  			
            | 5/18/2017 | -0.90 / -1.45% | 62.80 | 62.80 | 61.00 | 61.00 | 61.77 | 13.73 | 810,370 |   |  
            | 5/17/2017 | +0.90 / +1.48% | 61.30 | 62.40 | 61.30 | 61.90 | 61.82 | 13.94 | 800,760 |   |  			
            | 5/16/2017 | +0.70 / +1.16% | 61.00 | 61.50 | 60.50 | 61.00 | 61.12 | 13.73 | 805,230 |   |  
            | 5/15/2017 | +0.30 / +0.50% | 60.00 | 61.40 | 59.90 | 60.30 | 60.01 | 13.58 | 364,330 |   |  			
            | 5/12/2017 | -0.60 / -0.99% | 60.60 | 60.60 | 59.70 | 60.00 | 60.09 | 13.51 | 31,180 |   |  
            | 5/11/2017 | +0.30 / +0.50% | 61.00 | 61.50 | 60.30 | 60.60 | 60.94 | 13.64 | 19,150 |   |  			
            | 5/10/2017 | +0.50 / +0.84% | 59.80 | 60.40 | 59.80 | 60.30 | 60.02 | 13.58 | 17,880 |   |  
            | 5/9/2017 | -0.30 / -0.50% | 59.20 | 60.10 | 59.20 | 59.80 | 59.88 | 13.46 | 6,170 |   |  			
            | 5/8/2017 | 0.00 / 0.00% | 60.00 | 60.60 | 60.00 | 60.10 | 60.00 | 13.53 | 8,050 |   |  
            | 5/5/2017 | -0.90 / -1.48% | 60.00 | 61.00 | 60.00 | 60.10 | 60.09 | 13.53 | 2,810 |   |  			
            | 5/4/2017 | +0.50 / +0.83% | 61.00 | 61.70 | 60.50 | 61.00 | 61.02 | 13.73 | 12,640 |   |  
            | 5/3/2017 | -0.90 / -1.47% | 60.00 | 61.00 | 60.00 | 60.50 | 60.45 | 13.62 | 6,240 |   |  			
            | 4/28/2017 | +1.40 / +2.33% | 62.00 | 62.00 | 61.00 | 61.40 | 61.15 | 13.82 | 6,940 |   |  
            | 4/27/2017 | 0.00 / 0.00% | 59.40 | 61.70 | 59.20 | 60.00 | 60.73 | 13.51 | 14,450 |   |  			
            | 4/26/2017 | +0.50 / +0.84% | 59.50 | 61.00 | 59.50 | 60.00 | 59.74 | 13.51 | 8,330 |   |  
            | 4/25/2017 | -0.50 / -0.83% | 60.00 | 60.60 | 59.50 | 59.50 | 59.98 | 13.40 | 2,600 |   |  			
            | 4/24/2017 | -1.30 / -2.12% | 62.00 | 63.00 | 60.00 | 60.00 | 60.59 | 13.51 | 16,900 |   |  
            | 4/21/2017 | +0.40 / +0.66% | 61.00 | 61.50 | 60.60 | 61.30 | 61.18 | 13.80 | 4,920 |   |  			
            | 4/20/2017 | -0.10 / -0.16% | 61.00 | 61.50 | 60.60 | 60.90 | 60.87 | 13.71 | 2,990 |   |  
            | 4/19/2017 | +0.10 / +0.16% | 61.00 | 61.00 | 60.60 | 61.00 | 60.99 | 13.73 | 5,050 |   |  |