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                    Closing price on 7/6/2012
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                    | Open | 5.40 |  
                    | High | 5.50 |  
                    | Low | 5.20 |  
                    | Volume | 59,700 |  
                    | Split-adjusted Price | 4.55 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/6/2012 | -0.10 / -1.85% | 5.40 | 5.50 | 5.20 | 5.30 | 5.41 | 4.55 | 59,700 |   |  
            | 7/5/2012 | +0.30 / +5.88% | 5.20 | 5.40 | 4.90 | 5.40 | 5.16 | 4.64 | 143,600 |   |  			
            | 7/4/2012 | -0.10 / -1.92% | 5.20 | 5.30 | 4.90 | 5.10 | 5.14 | 4.38 | 126,500 |   |  
            | 7/3/2012 | -0.30 / -5.45% | 5.50 | 5.60 | 5.20 | 5.20 | 5.50 | 4.47 | 50,700 |   |  			
            | 7/2/2012 | -0.40 / -6.78% | 5.80 | 5.80 | 5.50 | 5.50 | 5.70 | 4.72 | 72,100 |   |  
            | 6/29/2012 | 0.00 / 0.00% | 5.90 | 5.90 | 5.50 | 5.90 | 5.79 | 5.07 | 90,900 |   |  			
            | 6/28/2012 | +0.10 / +1.72% | 5.90 | 5.90 | 5.60 | 5.90 | 5.72 | 5.07 | 103,600 |   |  
            | 6/27/2012 | +0.30 / +5.45% | 5.90 | 5.90 | 5.70 | 5.80 | 5.82 | 4.98 | 84,800 |   |  			
            | 6/26/2012 | -0.20 / -3.51% | 5.80 | 5.90 | 5.40 | 5.50 | 5.71 | 4.72 | 1,535,000 |   |  
            | 6/25/2012 | -0.30 / -5.00% | 6.20 | 6.20 | 5.70 | 5.70 | 6.02 | 4.89 | 152,600 |   |  			
            | 6/22/2012 | -0.40 / -6.25% | 6.30 | 6.30 | 6.00 | 6.00 | 6.22 | 5.15 | 98,300 |   |  
            | 6/21/2012 | 0.00 / 0.00% | 6.50 | 6.50 | 6.30 | 6.40 | 6.42 | 5.50 | 726,100 |   |  			
            | 6/20/2012 | 0.00 / 0.00% | 6.50 | 6.50 | 6.20 | 6.40 | 6.40 | 5.50 | 124,100 |   |  
            | 6/19/2012 | -0.10 / -1.54% | 6.60 | 6.60 | 6.20 | 6.40 | 6.45 | 5.50 | 111,500 |   |  			
            | 6/18/2012 | 0.00 / 0.00% | 6.30 | 6.60 | 6.30 | 6.50 | 6.50 | 5.58 | 140,800 |   |  
            | 6/15/2012 | 0.00 / 0.00% | 6.50 | 6.50 | 6.40 | 6.50 | 6.43 | 5.58 | 113,800 |   |  			
            | 6/14/2012 | 0.00 / 0.00% | 6.50 | 6.50 | 6.30 | 6.50 | 6.42 | 5.58 | 431,000 |   |  
            | 6/13/2012 | 0.00 / 0.00% | 6.60 | 6.60 | 6.30 | 6.50 | 6.43 | 5.58 | 118,900 |   |  			
            | 6/12/2012 | -0.20 / -2.99% | 6.60 | 6.70 | 6.50 | 6.50 | 6.58 | 5.58 | 384,100 |   |  
            | 6/11/2012 | +0.20 / +3.08% | 6.50 | 6.70 | 6.40 | 6.70 | 6.60 | 5.75 | 171,600 |   |  			
            | 6/8/2012 | -0.10 / -1.52% | 6.70 | 6.80 | 6.30 | 6.50 | 6.63 | 5.58 | 226,200 |   |  
            | 6/7/2012 | 0.00 / 0.00% | 6.70 | 6.80 | 6.50 | 6.60 | 6.61 | 5.67 | 248,300 |   |  			
            | 6/6/2012 | +0.10 / +1.54% | 6.60 | 6.60 | 6.40 | 6.60 | 6.52 | 5.67 | 293,400 |   |  
            | 6/5/2012 | +0.40 / +6.56% | 6.30 | 6.50 | 6.00 | 6.50 | 6.28 | 5.58 | 214,100 |   |  			
            | 6/4/2012 | -0.20 / -3.17% | 6.50 | 6.50 | 6.10 | 6.10 | 6.27 | 5.24 | 177,000 |   |  
            | 6/1/2012 | -0.10 / -1.56% | 6.40 | 6.50 | 6.20 | 6.30 | 6.41 | 5.41 | 118,500 |   |  			
            | 5/31/2012 | -0.10 / -1.54% | 6.50 | 6.50 | 6.20 | 6.40 | 6.40 | 5.50 | 169,200 |   |  
            | 5/30/2012 | -0.10 / -1.52% | 6.50 | 6.60 | 6.50 | 6.50 | 6.55 | 5.58 | 162,800 |   |  			
            | 5/29/2012 | -0.10 / -1.49% | 6.60 | 6.60 | 6.40 | 6.60 | 6.50 | 5.67 | 147,900 |   |  
            | 5/28/2012 | +0.20 / +3.08% | 6.60 | 6.80 | 6.40 | 6.70 | 6.63 | 5.75 | 363,400 |   |  |