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            | 
                    Closing price on 7/21/2015
                 |  |  
    
        |           
                
                    | Open | 3.70 |  
                    | High | 3.70 |  
                    | Low | 3.60 |  
                    | Volume | 119,410 |  
                    | Split-adjusted Price | 3.44 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 7/1/2015 | 0.00 / 0.00% | 3.70 | 3.80 | 3.70 | 3.70 | 3.70 | 3.44 | 115,610 |   |  
            | 6/30/2015 | 0.00 / 0.00% | 3.70 | 3.80 | 3.70 | 3.70 | 3.70 | 3.44 | 59,990 |   |  			
            | 6/29/2015 | 0.00 / 0.00% | 3.70 | 3.80 | 3.70 | 3.70 | 3.73 | 3.44 | 49,050 |   |  
            | 6/26/2015 | -0.10 / -2.63% | 3.80 | 3.80 | 3.70 | 3.70 | 3.74 | 3.44 | 39,820 |   |  			
            | 6/25/2015 | 0.00 / 0.00% | 3.80 | 3.80 | 3.70 | 3.80 | 3.80 | 3.54 | 60,790 |   |  
            | 6/24/2015 | 0.00 / 0.00% | 3.80 | 3.90 | 3.80 | 3.80 | 3.80 | 3.54 | 174,590 |   |  			
            | 6/23/2015 | -0.10 / -2.56% | 3.90 | 3.90 | 3.80 | 3.80 | 3.82 | 3.54 | 119,920 |   |  
            | 6/22/2015 | +0.10 / +2.63% | 3.80 | 4.00 | 3.80 | 3.90 | 3.89 | 3.63 | 192,920 |   |  			
            | 6/19/2015 | 0.00 / 0.00% | 3.80 | 3.90 | 3.70 | 3.80 | 3.80 | 3.54 | 135,290 |   |  
            | 6/18/2015 | 0.00 / 0.00% | 3.70 | 3.80 | 3.70 | 3.80 | 3.78 | 3.54 | 52,340 |   |  			
            | 6/17/2015 | 0.00 / 0.00% | 3.70 | 3.80 | 3.70 | 3.80 | 3.75 | 3.54 | 168,260 |   |  
            | 6/16/2015 | +0.10 / +2.70% | 3.70 | 3.90 | 3.70 | 3.80 | 3.80 | 3.54 | 93,860 |   |  			
            | 6/15/2015 | -0.10 / -2.63% | 3.80 | 3.90 | 3.70 | 3.70 | 3.80 | 3.44 | 33,450 |   |  
            | 6/12/2015 | 0.00 / 0.00% | 3.90 | 3.90 | 3.80 | 3.80 | 3.81 | 3.54 | 150,500 |   |  			
            | 6/11/2015 | 0.00 / 0.00% | 3.90 | 3.90 | 3.80 | 3.80 | 3.85 | 3.54 | 273,800 |   |  
            | 6/10/2015 | 0.00 / 0.00% | 3.80 | 3.90 | 3.70 | 3.80 | 3.77 | 3.54 | 206,440 |   |  |