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            | 
                    Closing price on 5/13/2014
                 |  |  
    
        |           
                
                    | Open | 6.90 |  
                    | High | 6.90 |  
                    | Low | 6.30 |  
                    | Volume | 254,300 |  
                    | Split-adjusted Price | 5.58 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/13/2014 | -0.40 / -5.80% | 6.90 | 6.90 | 6.30 | 6.50 | 6.62 | 5.58 | 254,300 |   |  
            | 5/12/2014 | -0.60 / -8.00% | 7.50 | 7.50 | 6.80 | 6.90 | 7.09 | 5.93 | 155,300 |   |  			
            | 5/9/2014 | +0.20 / +2.74% | 7.30 | 7.50 | 7.20 | 7.50 | 7.41 | 6.44 | 151,700 |   |  
            | 5/8/2014 | -0.80 / -9.88% | 8.00 | 8.00 | 7.30 | 7.30 | 7.49 | 6.27 | 415,700 |   |  			
            | 5/7/2014 | 0.00 / 0.00% | 8.10 | 8.30 | 8.10 | 8.10 | 8.17 | 6.96 | 241,700 |   |  
            | 5/6/2014 | -0.50 / -5.81% | 8.50 | 8.50 | 7.80 | 8.10 | 8.10 | 6.96 | 353,200 |   |  			
            | 5/5/2014 | -0.60 / -6.52% | 9.20 | 9.20 | 8.50 | 8.60 | 8.86 | 7.38 | 270,600 |   |  
            | 4/29/2014 | 0.00 / 0.00% | 9.20 | 9.20 | 9.00 | 9.20 | 9.10 | 7.90 | 137,000 |   |  			
            | 4/28/2014 | -0.10 / -1.08% | 9.30 | 9.30 | 9.10 | 9.20 | 9.19 | 7.90 | 117,700 |   |  
            | 4/25/2014 | 0.00 / 0.00% | 9.30 | 9.40 | 9.20 | 9.30 | 9.30 | 7.99 | 115,000 |   |  			
            | 4/24/2014 | 0.00 / 0.00% | 9.30 | 9.30 | 9.20 | 9.30 | 9.24 | 7.99 | 88,500 |   |  
            | 4/23/2014 | 0.00 / 0.00% | 9.30 | 9.40 | 9.20 | 9.30 | 9.31 | 7.99 | 262,000 |   |  			
            | 4/22/2014 | +0.60 / +6.90% | 8.80 | 9.30 | 8.80 | 9.30 | 9.03 | 7.99 | 497,900 |   |  
            | 4/21/2014 | -0.10 / -1.14% | 8.90 | 9.00 | 8.60 | 8.70 | 8.77 | 7.47 | 269,400 |   |  			
            | 4/18/2014 | -0.50 / -5.38% | 9.10 | 9.20 | 8.80 | 8.80 | 8.97 | 7.56 | 174,200 |   |  
            | 4/17/2014 | +0.70 / +8.14% | 8.60 | 9.30 | 8.60 | 9.30 | 8.97 | 7.99 | 463,800 |   |  			
            | 4/16/2014 | -0.60 / -6.52% | 9.20 | 9.20 | 8.40 | 8.60 | 8.83 | 7.38 | 307,700 |   |  
            | 4/15/2014 | -0.30 / -3.16% | 9.50 | 9.50 | 9.20 | 9.20 | 9.32 | 7.90 | 268,800 |   |  			
            | 4/14/2014 | -0.40 / -4.04% | 10.00 | 10.00 | 9.30 | 9.50 | 9.63 | 8.16 | 260,100 |   |  
            | 4/11/2014 | -0.50 / -4.81% | 10.40 | 10.40 | 9.90 | 9.90 | 10.10 | 8.50 | 687,000 |   |  			
            | 4/10/2014 | 0.00 / 0.00% | 10.50 | 10.50 | 10.30 | 10.40 | 10.41 | 8.93 | 224,300 |   |  
            | 4/8/2014 | 0.00 / 0.00% | 10.40 | 10.50 | 10.30 | 10.40 | 10.41 | 8.93 | 321,700 |   |  			
            | 4/7/2014 | +0.40 / +4.00% | 10.00 | 10.40 | 10.00 | 10.40 | 10.25 | 8.93 | 377,600 |   |  
            | 4/4/2014 | 0.00 / 0.00% | 10.00 | 10.00 | 9.70 | 10.00 | 9.88 | 8.59 | 229,200 |   |  			
            | 4/3/2014 | +0.50 / +5.26% | 9.60 | 10.00 | 9.60 | 10.00 | 9.70 | 8.59 | 69,900 |   |  
            | 4/2/2014 | -0.40 / -4.04% | 9.90 | 9.90 | 9.20 | 9.50 | 9.55 | 8.16 | 146,400 |   |  			
            | 4/1/2014 | -0.40 / -3.88% | 10.30 | 10.30 | 9.70 | 9.90 | 9.98 | 8.50 | 110,100 |   |  
            | 3/31/2014 | 0.00 / 0.00% | 10.40 | 10.50 | 10.20 | 10.30 | 10.34 | 8.84 | 231,800 |   |  			
            | 3/28/2014 | +0.20 / +1.98% | 10.10 | 10.40 | 9.90 | 10.30 | 10.19 | 8.84 | 214,300 |   |  
            | 3/27/2014 | 0.00 / 0.00% | 10.10 | 10.20 | 9.30 | 10.10 | 9.53 | 8.67 | 306,700 |   |  |