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                    Closing price on 8/20/2015
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                    | Open | 3.10 |  
                    | High | 3.20 |  
                    | Low | 3.00 |  
                    | Volume | 87,790 |  
                    | Split-adjusted Price | 2.79 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/20/2015 | -0.20 / -6.25% | 3.10 | 3.20 | 3.00 | 3.00 | 3.06 | 2.79 | 87,790 |   |  
            | 8/19/2015 | 0.00 / 0.00% | 3.10 | 3.20 | 3.10 | 3.20 | 3.15 | 2.98 | 28,410 |   |  			
            | 8/18/2015 | +0.10 / +3.23% | 3.20 | 3.30 | 3.10 | 3.20 | 3.14 | 2.98 | 173,530 |   |  
            | 8/17/2015 | -0.10 / -3.13% | 3.10 | 3.30 | 3.10 | 3.10 | 3.18 | 2.89 | 47,900 |   |  			
            | 8/14/2015 | -0.10 / -3.03% | 3.10 | 3.30 | 3.10 | 3.20 | 3.18 | 2.98 | 51,960 |   |  
            | 8/13/2015 | -0.20 / -5.71% | 3.50 | 3.50 | 3.30 | 3.30 | 3.32 | 3.07 | 218,180 |   |  			
            | 8/12/2015 | +0.10 / +2.94% | 3.40 | 3.50 | 3.40 | 3.50 | 3.45 | 3.26 | 55,890 |   |  
            | 8/11/2015 | -0.10 / -2.86% | 3.30 | 3.60 | 3.30 | 3.40 | 3.48 | 3.16 | 78,530 |   |  			
            | 8/10/2015 | +0.20 / +6.06% | 3.40 | 3.50 | 3.40 | 3.50 | 3.41 | 3.26 | 27,820 |   |  
            | 8/7/2015 | -0.10 / -2.94% | 3.40 | 3.50 | 3.30 | 3.30 | 3.37 | 3.07 | 13,040 |   |  			
            | 8/6/2015 | -0.20 / -5.56% | 3.50 | 3.60 | 3.40 | 3.40 | 3.40 | 3.16 | 37,300 |   |  
            | 8/5/2015 | +0.10 / +2.86% | 3.50 | 3.60 | 3.50 | 3.60 | 3.55 | 3.35 | 11,750 |   |  			
            | 8/4/2015 | 0.00 / 0.00% | 3.50 | 3.50 | 3.50 | 3.50 | 3.50 | 3.26 | 50 |   |  
            | 8/3/2015 | +0.10 / +2.94% | 3.40 | 3.50 | 3.40 | 3.50 | 3.45 | 3.26 | 93,310 |   |  			
            | 7/31/2015 | -0.10 / -2.86% | 3.50 | 3.60 | 3.40 | 3.40 | 3.49 | 3.16 | 20,920 |   |  
            | 7/30/2015 | 0.00 / 0.00% | 3.40 | 3.60 | 3.40 | 3.50 | 3.53 | 3.26 | 77,640 |   |  			
            | 7/29/2015 | +0.10 / +2.94% | 3.40 | 3.60 | 3.40 | 3.50 | 3.50 | 3.26 | 151,860 |   |  
            | 7/28/2015 | -0.10 / -2.86% | 3.40 | 3.60 | 3.40 | 3.40 | 3.44 | 3.16 | 29,670 |   |  			
            | 7/27/2015 | 0.00 / 0.00% | 3.50 | 3.50 | 3.40 | 3.50 | 3.44 | 3.26 | 158,810 |   |  
            | 7/24/2015 | -0.10 / -2.78% | 3.60 | 3.60 | 3.50 | 3.50 | 3.55 | 3.26 | 154,970 |   |  			
            | 7/23/2015 | 0.00 / 0.00% | 3.50 | 3.70 | 3.50 | 3.60 | 3.59 | 3.35 | 96,560 |   |  
            | 7/22/2015 | -0.10 / -2.70% | 3.70 | 3.70 | 3.60 | 3.60 | 3.68 | 3.35 | 9,500 |   |  			
            | 7/21/2015 | 0.00 / 0.00% | 3.70 | 3.70 | 3.60 | 3.70 | 3.62 | 3.44 | 119,410 |   |  
            | 7/20/2015 | 0.00 / 0.00% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.44 | 41,010 |   |  			
            | 7/17/2015 | +0.10 / +2.78% | 3.60 | 3.70 | 3.60 | 3.70 | 3.67 | 3.44 | 72,540 |   |  
            | 7/16/2015 | 0.00 / 0.00% | 3.50 | 3.70 | 3.50 | 3.60 | 3.59 | 3.35 | 48,710 |   |  			
            | 7/15/2015 | -0.10 / -2.70% | 3.60 | 3.70 | 3.60 | 3.60 | 3.61 | 3.35 | 35,460 |   |  
            | 7/14/2015 | 0.00 / 0.00% | 3.60 | 3.70 | 3.60 | 3.70 | 3.69 | 3.44 | 103,310 |   |  			
            | 7/13/2015 | -0.10 / -2.63% | 3.70 | 3.80 | 3.70 | 3.70 | 3.73 | 3.44 | 190,110 |   |  
            | 7/10/2015 | 0.00 / 0.00% | 3.70 | 3.80 | 3.70 | 3.80 | 3.70 | 3.54 | 42,240 |   |  |