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                    Closing price on 5/18/2015
                 |  |  
    
        |           
                
                    | Open | 14.20 |  
                    | High | 14.20 |  
                    | Low | 13.50 |  
                    | Volume | 216,800 |  
                    | Split-adjusted Price | 11.59 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/18/2015 | -0.80 / -5.59% | 14.20 | 14.20 | 13.50 | 13.50 | 13.80 | 11.59 | 216,800 |   |  
            | 5/15/2015 | -0.50 / -3.38% | 14.80 | 14.80 | 13.50 | 14.30 | 14.04 | 12.28 | 218,200 |   |  			
            | 5/14/2015 | 0.00 / 0.00% | 14.80 | 14.90 | 14.60 | 14.80 | 14.78 | 12.71 | 235,400 |   |  
            | 5/13/2015 | 0.00 / 0.00% | 14.80 | 14.90 | 14.70 | 14.80 | 14.85 | 12.71 | 289,400 |   |  			
            | 5/12/2015 | 0.00 / 0.00% | 14.80 | 14.90 | 14.50 | 14.80 | 14.74 | 12.71 | 245,000 |   |  
            | 5/11/2015 | +0.10 / +0.68% | 14.70 | 15.00 | 14.70 | 14.80 | 14.81 | 12.71 | 280,800 |   |  			
            | 5/8/2015 | -0.30 / -2.00% | 15.00 | 15.00 | 14.70 | 14.70 | 14.88 | 12.62 | 264,700 |   |  
            | 5/7/2015 | +0.60 / +4.17% | 14.40 | 15.00 | 14.40 | 15.00 | 14.75 | 12.88 | 279,200 |   |  			
            | 5/6/2015 | +0.40 / +2.86% | 14.00 | 14.40 | 14.00 | 14.40 | 14.18 | 12.37 | 654,800 |   |  
            | 5/5/2015 | +0.30 / +2.19% | 13.70 | 14.10 | 13.30 | 14.00 | 13.65 | 12.02 | 400,700 |   |  			
            | 5/4/2015 | -1.30 / -8.67% | 15.00 | 15.00 | 13.70 | 13.70 | 14.54 | 11.76 | 325,000 |   |  
            | 4/27/2015 | +0.30 / +2.04% | 14.70 | 15.00 | 13.30 | 15.00 | 14.83 | 12.88 | 922,600 |   |  			
            | 4/24/2015 | +1.00 / +7.30% | 13.70 | 15.00 | 13.70 | 14.70 | 14.13 | 12.62 | 990,500 |   |  
            | 4/23/2015 | +0.20 / +1.48% | 13.50 | 13.90 | 13.40 | 13.70 | 13.71 | 11.76 | 403,900 |   |  			
            | 4/22/2015 | +0.10 / +0.75% | 13.40 | 13.70 | 13.30 | 13.50 | 13.47 | 11.59 | 343,700 |   |  
            | 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 |   |  |