| 
    
        
            | 
                    Closing price on 7/31/2020
                 |  |  
    
        |           
                
                    | Open | 1.27 |  
                    | High | 1.29 |  
                    | Low | 1.26 |  
                    | Volume | 244,290 |  
                    | Split-adjusted Price | 1.20 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/31/2020 | +0.03 / +2.38% | 1.27 | 1.29 | 1.26 | 1.29 | 1.27 | 1.20 | 244,290 |   |  
            | 7/30/2020 | 0.00 / 0.00% | 1.31 | 1.31 | 1.24 | 1.26 | 1.26 | 1.17 | 68,110 |   |  			
            | 7/29/2020 | -0.05 / -3.82% | 1.31 | 1.31 | 1.25 | 1.26 | 1.30 | 1.17 | 159,930 |   |  
            | 7/28/2020 | 0.00 / 0.00% | 1.31 | 1.33 | 1.26 | 1.31 | 1.29 | 1.22 | 300,630 |   |  			
            | 7/27/2020 | -0.09 / -6.43% | 1.32 | 1.37 | 1.31 | 1.31 | 1.32 | 1.22 | 420,860 |   |  
            | 7/24/2020 | -0.05 / -3.45% | 1.45 | 1.47 | 1.38 | 1.40 | 1.40 | 1.30 | 255,800 |   |  			
            | 7/23/2020 | 0.00 / 0.00% | 1.45 | 1.45 | 1.42 | 1.45 | 1.43 | 1.35 | 184,040 |   |  
            | 7/22/2020 | -0.03 / -2.03% | 1.50 | 1.50 | 1.44 | 1.45 | 1.46 | 1.35 | 56,790 |   |  			
            | 7/21/2020 | +0.03 / +2.07% | 1.45 | 1.48 | 1.43 | 1.48 | 1.44 | 1.38 | 305,940 |   |  
            | 7/20/2020 | -0.01 / -0.68% | 1.46 | 1.46 | 1.44 | 1.45 | 1.44 | 1.35 | 284,120 |   |  			
            | 7/17/2020 | 0.00 / 0.00% | 1.47 | 1.48 | 1.45 | 1.46 | 1.45 | 1.36 | 51,700 |   |  
            | 7/16/2020 | -0.01 / -0.68% | 1.47 | 1.50 | 1.44 | 1.46 | 1.46 | 1.36 | 159,860 |   |  			
            | 7/15/2020 | 0.00 / 0.00% | 1.51 | 1.51 | 1.45 | 1.47 | 1.46 | 1.37 | 158,400 |   |  
            | 7/14/2020 | -0.01 / -0.68% | 1.49 | 1.49 | 1.46 | 1.47 | 1.48 | 1.37 | 85,260 |   |  			
            | 7/13/2020 | -0.02 / -1.33% | 1.50 | 1.52 | 1.45 | 1.48 | 1.47 | 1.38 | 431,570 |   |  
            | 7/10/2020 | 0.00 / 0.00% | 1.53 | 1.53 | 1.49 | 1.50 | 1.50 | 1.40 | 58,120 |   |  			
            | 7/9/2020 | 0.00 / 0.00% | 1.50 | 1.52 | 1.46 | 1.50 | 1.48 | 1.40 | 322,040 |   |  
            | 7/8/2020 | 0.00 / 0.00% | 1.57 | 1.57 | 1.50 | 1.50 | 1.53 | 1.40 | 149,050 |   |  			
            | 7/7/2020 | -0.05 / -3.23% | 1.52 | 1.59 | 1.50 | 1.50 | 1.53 | 1.40 | 166,990 |   |  
            | 7/6/2020 | +0.07 / +4.73% | 1.48 | 1.58 | 1.47 | 1.55 | 1.54 | 1.44 | 151,990 |   |  			
            | 7/3/2020 | +0.05 / +3.50% | 1.49 | 1.50 | 1.43 | 1.48 | 1.48 | 1.38 | 92,450 |   |  
            | 7/2/2020 | -0.05 / -3.38% | 1.47 | 1.47 | 1.42 | 1.43 | 1.44 | 1.33 | 73,430 |   |  			
            | 7/1/2020 | +0.06 / +4.23% | 1.45 | 1.48 | 1.41 | 1.48 | 1.44 | 1.38 | 127,450 |   |  
            | 6/30/2020 | -0.05 / -3.40% | 1.47 | 1.53 | 1.42 | 1.42 | 1.44 | 1.32 | 261,330 |   |  			
            | 6/29/2020 | -0.09 / -5.77% | 1.56 | 1.56 | 1.46 | 1.47 | 1.47 | 1.37 | 473,860 |   |  
            | 6/26/2020 | -0.02 / -1.27% | 1.58 | 1.60 | 1.55 | 1.56 | 1.57 | 1.45 | 63,580 |   |  			
            | 6/25/2020 | +0.01 / +0.64% | 1.60 | 1.60 | 1.53 | 1.58 | 1.57 | 1.47 | 127,500 |   |  
            | 6/24/2020 | -0.04 / -2.48% | 1.61 | 1.63 | 1.57 | 1.57 | 1.60 | 1.46 | 219,450 |   |  			
            | 6/23/2020 | -0.03 / -1.83% | 1.64 | 1.64 | 1.60 | 1.61 | 1.62 | 1.50 | 237,680 |   |  
            | 6/22/2020 | -0.04 / -2.38% | 1.68 | 1.70 | 1.61 | 1.64 | 1.65 | 1.53 | 301,950 |   |  |