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            | 
                    Closing price on 11/30/2015
                 |  |  
    
        |           
                
                    | Open | 17.60 |  
                    | High | 17.70 |  
                    | Low | 17.10 |  
                    | Volume | 129,600 |  
                    | Split-adjusted Price | 15.40 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 11/13/2015 | +0.10 / +0.52% | 19.40 | 19.50 | 19.30 | 19.50 | 19.41 | 17.45 | 147,500 |   |  			
            | 11/12/2015 | 0.00 / 0.00% | 19.40 | 19.50 | 19.00 | 19.40 | 19.29 | 17.37 | 151,300 |   |  
            | 11/11/2015 | -0.10 / -0.51% | 19.50 | 19.70 | 19.10 | 19.40 | 19.35 | 17.37 | 136,600 |   |  			
            | 11/10/2015 | -0.10 / -0.51% | 19.70 | 19.80 | 19.40 | 19.50 | 19.55 | 17.45 | 514,800 |   |  
            | 11/9/2015 | +0.30 / +1.55% | 19.30 | 19.80 | 19.30 | 19.60 | 19.57 | 17.54 | 148,300 |   |  			
            | 11/6/2015 | 0.00 / 0.00% | 19.30 | 20.00 | 19.00 | 19.30 | 19.49 | 17.28 | 152,200 |   |  
            | 11/5/2015 | 0.00 / 0.00% | 19.30 | 19.50 | 19.00 | 19.30 | 19.21 | 17.28 | 132,500 |   |  			
            | 11/4/2015 | 0.00 / 0.00% | 19.30 | 19.60 | 19.10 | 19.30 | 19.26 | 17.28 | 182,700 |   |  
            | 11/3/2015 | +0.10 / +0.52% | 19.20 | 19.50 | 18.80 | 19.30 | 19.18 | 17.28 | 155,400 |   |  			
            | 11/2/2015 | -0.30 / -1.54% | 19.50 | 20.10 | 19.10 | 19.20 | 19.62 | 17.19 | 155,000 |   |  
            | 10/30/2015 | -0.80 / -3.94% | 20.30 | 20.40 | 19.00 | 19.50 | 19.46 | 17.45 | 131,200 |   |  			
            | 10/29/2015 | +0.70 / +3.57% | 19.60 | 20.90 | 19.60 | 20.30 | 20.23 | 18.17 | 247,800 |   |  
            | 10/28/2015 | +0.30 / +1.55% | 19.20 | 21.20 | 18.30 | 19.60 | 20.04 | 17.54 | 406,000 |   |  			
            | 10/27/2015 | -0.60 / -3.02% | 19.70 | 20.00 | 18.50 | 19.30 | 19.31 | 17.28 | 548,900 |   |  
            | 10/26/2015 | +1.30 / +6.99% | 18.60 | 20.40 | 18.00 | 19.90 | 19.21 | 17.81 | 649,900 |   |  			
            | 10/23/2015 | +1.50 / +8.77% | 17.10 | 18.80 | 16.90 | 18.60 | 17.78 | 16.65 | 341,900 |   |  
            | 10/22/2015 | +0.20 / +1.18% | 16.90 | 17.10 | 16.80 | 17.10 | 16.97 | 15.31 | 227,300 |   |  			
            | 10/21/2015 | 0.00 / 0.00% | 16.90 | 17.00 | 16.80 | 16.90 | 16.86 | 15.13 | 227,100 |   |  
            | 10/20/2015 | -0.10 / -0.59% | 17.00 | 17.00 | 16.70 | 16.90 | 16.90 | 15.13 | 251,600 |   |  |