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            | 
                    Closing price on 4/21/2015
                 |  |  
    
        |           
                
                    | Open | 13.40 |  
                    | High | 13.50 |  
                    | Low | 13.30 |  
                    | Volume | 558,000 |  
                    | Split-adjusted Price | 11.51 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/21/2015 | 0.00 / 0.00% | 13.40 | 13.50 | 13.30 | 13.40 | 13.40 | 11.51 | 558,000 |   |  
            | 4/20/2015 | 0.00 / 0.00% | 13.40 | 14.70 | 13.10 | 13.40 | 13.41 | 11.51 | 595,900 |   |  			
            | 4/17/2015 | 0.00 / 0.00% | 13.40 | 13.50 | 13.30 | 13.40 | 13.39 | 11.51 | 810,300 |   |  
            | 4/16/2015 | +0.10 / +0.75% | 13.30 | 13.50 | 13.30 | 13.40 | 13.34 | 11.51 | 564,100 |   |  			
            | 4/15/2015 | +0.10 / +0.76% | 13.20 | 13.30 | 13.00 | 13.30 | 13.18 | 11.42 | 570,300 |   |  
            | 4/14/2015 | -0.10 / -0.75% | 13.30 | 13.40 | 13.10 | 13.20 | 13.25 | 11.33 | 275,600 |   |  			
            | 4/13/2015 | -0.10 / -0.75% | 13.40 | 13.50 | 13.30 | 13.30 | 13.39 | 11.42 | 758,200 |   |  
            | 4/10/2015 | +0.30 / +2.29% | 13.10 | 13.50 | 13.10 | 13.40 | 13.26 | 11.51 | 340,300 |   |  			
            | 4/9/2015 | +0.10 / +0.77% | 13.00 | 13.10 | 12.70 | 13.10 | 12.89 | 11.25 | 409,900 |   |  
            | 4/8/2015 | -0.30 / -2.26% | 13.30 | 13.50 | 13.00 | 13.00 | 13.25 | 11.16 | 298,600 |   |  			
            | 4/7/2015 | +0.20 / +1.53% | 13.10 | 13.30 | 13.00 | 13.30 | 13.14 | 11.42 | 284,200 |   |  
            | 4/6/2015 | -0.50 / -3.68% | 13.60 | 13.60 | 13.10 | 13.10 | 13.34 | 11.25 | 232,000 |   |  			
            | 4/3/2015 | 0.00 / 0.00% | 13.60 | 13.70 | 13.50 | 13.60 | 13.56 | 11.68 | 502,900 |   |  
            | 4/2/2015 | +0.20 / +1.49% | 13.40 | 13.60 | 13.40 | 13.60 | 13.48 | 11.68 | 229,100 |   |  			
            | 4/1/2015 | -0.10 / -0.74% | 13.50 | 13.60 | 13.30 | 13.40 | 13.46 | 11.51 | 348,100 |   |  
            | 3/31/2015 | +0.10 / +0.75% | 13.40 | 13.50 | 13.20 | 13.50 | 13.33 | 11.59 | 386,100 |   |  			
            | 3/30/2015 | 0.00 / 0.00% | 13.50 | 13.50 | 13.30 | 13.40 | 13.37 | 11.51 | 291,800 |   |  
            | 3/27/2015 | -0.20 / -1.47% | 13.60 | 13.70 | 13.30 | 13.40 | 13.52 | 11.51 | 341,000 |   |  			
            | 3/26/2015 | -0.40 / -2.86% | 13.90 | 13.90 | 12.70 | 13.60 | 13.65 | 11.68 | 605,700 |   |  
            | 3/25/2015 | -0.20 / -1.41% | 14.20 | 14.20 | 13.90 | 14.00 | 14.15 | 12.02 | 295,500 |   |  			
            | 3/24/2015 | -0.20 / -1.39% | 14.40 | 14.50 | 14.10 | 14.20 | 14.31 | 12.19 | 536,600 |   |  
            | 3/23/2015 | -0.30 / -2.04% | 14.70 | 14.70 | 13.30 | 14.40 | 14.14 | 12.37 | 813,700 |   |  			
            | 3/20/2015 | -0.30 / -2.00% | 15.00 | 15.10 | 14.70 | 14.70 | 14.89 | 12.62 | 971,400 |   |  
            | 3/19/2015 | -0.20 / -1.32% | 15.20 | 15.40 | 15.00 | 15.00 | 15.21 | 12.88 | 636,600 |   |  			
            | 3/18/2015 | -0.30 / -1.94% | 15.50 | 15.60 | 15.20 | 15.20 | 15.31 | 13.05 | 375,800 |   |  
            | 3/17/2015 | 0.00 / 0.00% | 15.40 | 15.60 | 15.40 | 15.50 | 15.50 | 13.31 | 663,400 |   |  			
            | 3/16/2015 | 0.00 / 0.00% | 15.50 | 15.60 | 15.40 | 15.50 | 15.50 | 13.31 | 757,600 |   |  
            | 3/13/2015 | +0.10 / +0.65% | 15.40 | 15.70 | 15.40 | 15.50 | 15.54 | 13.31 | 334,100 |   |  			
            | 3/12/2015 | 0.00 / 0.00% | 15.40 | 15.50 | 15.30 | 15.40 | 15.40 | 13.22 | 272,100 |   |  
            | 3/11/2015 | -0.20 / -1.28% | 15.60 | 15.60 | 15.20 | 15.40 | 15.36 | 13.22 | 512,500 |   |  |