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            | 
                    Closing price on 12/25/2015
                 |  |  
    
        |           
                
                    | Open | 17.20 |  
                    | High | 17.40 |  
                    | Low | 17.10 |  
                    | Volume | 464,500 |  
                    | Split-adjusted Price | 15.31 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/25/2015 | -0.10 / -0.58% | 17.20 | 17.40 | 17.10 | 17.10 | 17.26 | 15.31 | 464,500 |   |  
            | 12/24/2015 | 0.00 / 0.00% | 17.20 | 17.50 | 17.20 | 17.20 | 17.35 | 15.40 | 317,500 |   |  			
            | 12/23/2015 | -0.10 / -0.58% | 17.30 | 17.30 | 17.10 | 17.20 | 17.20 | 15.40 | 135,500 |   |  
            | 12/22/2015 | 0.00 / 0.00% | 17.30 | 17.40 | 17.20 | 17.30 | 17.33 | 15.49 | 133,900 |   |  			
            | 12/21/2015 | -0.10 / -0.57% | 17.40 | 17.50 | 17.20 | 17.30 | 17.39 | 15.49 | 116,800 |   |  
            | 12/18/2015 | -0.20 / -1.14% | 17.60 | 17.60 | 17.30 | 17.40 | 17.46 | 15.58 | 442,700 |   |  			
            | 12/17/2015 | 0.00 / 0.00% | 17.60 | 17.70 | 17.50 | 17.60 | 17.60 | 15.75 | 185,200 |   |  
            | 12/16/2015 | +0.20 / +1.15% | 17.40 | 17.60 | 17.40 | 17.60 | 17.56 | 15.75 | 869,200 |   |  			
            | 12/15/2015 | +0.30 / +1.75% | 17.10 | 17.40 | 17.10 | 17.40 | 17.21 | 15.58 | 168,000 |   |  
            | 12/14/2015 | 0.00 / 0.00% | 17.10 | 17.20 | 16.90 | 17.10 | 17.06 | 15.31 | 151,700 |   |  			
            | 12/11/2015 | +0.10 / +0.59% | 17.00 | 17.10 | 16.90 | 17.10 | 16.97 | 15.31 | 141,900 |   |  
            | 12/10/2015 | -0.10 / -0.58% | 17.00 | 17.10 | 16.80 | 17.00 | 17.02 | 15.22 | 130,900 |   |  			
            | 12/9/2015 | -0.20 / -1.16% | 17.30 | 17.30 | 17.10 | 17.10 | 17.18 | 15.31 | 120,400 |   |  
            | 12/8/2015 | +0.10 / +0.58% | 17.20 | 17.40 | 17.00 | 17.30 | 17.12 | 15.49 | 123,800 |   |  			
            | 12/7/2015 | -0.10 / -0.58% | 17.30 | 17.40 | 17.20 | 17.20 | 17.30 | 15.40 | 118,600 |   |  
            | 12/4/2015 | -0.10 / -0.57% | 17.40 | 17.40 | 17.20 | 17.30 | 17.33 | 15.49 | 109,200 |   |  			
            | 12/3/2015 | 0.00 / 0.00% | 17.40 | 18.40 | 17.20 | 17.40 | 17.47 | 15.58 | 752,100 |   |  
            | 12/2/2015 | +0.20 / +1.16% | 17.20 | 17.40 | 17.20 | 17.40 | 17.27 | 15.58 | 117,500 |   |  			
            | 12/1/2015 | 0.00 / 0.00% | 17.20 | 17.40 | 16.90 | 17.20 | 17.19 | 15.40 | 122,200 |   |  
            | 11/30/2015 | -0.40 / -2.27% | 17.60 | 17.70 | 17.10 | 17.20 | 17.60 | 15.40 | 129,600 |   |  			
            | 11/27/2015 | -0.40 / -2.22% | 18.00 | 18.00 | 17.60 | 17.60 | 18.00 | 15.75 | 230,700 |   |  
            | 11/26/2015 | -0.20 / -1.10% | 18.20 | 18.30 | 18.00 | 18.00 | 18.20 | 16.11 | 109,400 |   |  			
            | 11/25/2015 | 0.00 / 0.00% | 18.20 | 18.30 | 18.00 | 18.20 | 18.14 | 16.29 | 623,900 |   |  
            | 11/24/2015 | -0.40 / -2.15% | 18.60 | 18.70 | 18.20 | 18.20 | 18.42 | 16.29 | 397,700 |   |  			
            | 11/23/2015 | -0.20 / -1.06% | 18.80 | 18.90 | 17.00 | 18.60 | 18.69 | 16.65 | 807,900 |   |  
            | 11/20/2015 | +0.10 / +0.53% | 18.70 | 18.90 | 16.90 | 18.80 | 18.72 | 16.83 | 110,400 |   |  			
            | 11/19/2015 | 0.00 / 0.00% | 18.70 | 18.70 | 18.50 | 18.70 | 18.62 | 16.74 | 134,800 |   |  
            | 11/18/2015 | -0.10 / -0.53% | 18.80 | 18.80 | 18.50 | 18.70 | 18.65 | 16.74 | 565,800 |   |  			
            | 11/17/2015 | -0.30 / -1.57% | 19.10 | 19.40 | 18.80 | 18.80 | 19.15 | 16.83 | 139,300 |   |  
            | 11/16/2015 | -0.40 / -2.05% | 19.50 | 19.50 | 18.90 | 19.10 | 19.32 | 17.10 | 148,400 |   |  |