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                    Closing price on 8/12/2015
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                    | Open | 3.40 |  
                    | High | 3.50 |  
                    | Low | 3.40 |  
                    | Volume | 55,890 |  
                    | Split-adjusted Price | 3.26 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 7/9/2015 | -0.10 / -2.56% | 3.80 | 3.80 | 3.70 | 3.80 | 3.78 | 3.54 | 63,590 |   |  
            | 7/8/2015 | +0.10 / +2.63% | 3.80 | 3.90 | 3.80 | 3.90 | 3.80 | 3.63 | 72,580 |   |  			
            | 7/7/2015 | 0.00 / 0.00% | 3.80 | 3.90 | 3.80 | 3.80 | 3.83 | 3.54 | 142,690 |   |  
            | 7/6/2015 | -0.10 / -2.56% | 3.90 | 4.00 | 3.80 | 3.80 | 3.93 | 3.54 | 221,840 |   |  			
            | 7/3/2015 | +0.10 / +2.63% | 3.80 | 3.90 | 3.80 | 3.90 | 3.85 | 3.63 | 102,910 |   |  
            | 7/2/2015 | +0.10 / +2.70% | 3.70 | 3.80 | 3.60 | 3.80 | 3.71 | 3.54 | 76,630 |   |  |