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            | 
                    Closing price on 10/29/2020
                 |  |  
    
        |           
                
                    | Open | 1.37 |  
                    | High | 1.40 |  
                    | Low | 1.36 |  
                    | Volume | 83,250 |  
                    | Split-adjusted Price | 1.28 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/29/2020 | 0.00 / 0.00% | 1.37 | 1.40 | 1.36 | 1.37 | 1.37 | 1.28 | 83,250 |   |  
            | 10/28/2020 | -0.05 / -3.52% | 1.40 | 1.41 | 1.37 | 1.37 | 1.39 | 1.28 | 90,730 |   |  			
            | 10/27/2020 | 0.00 / 0.00% | 1.42 | 1.42 | 1.40 | 1.42 | 1.40 | 1.32 | 59,080 |   |  
            | 10/26/2020 | 0.00 / 0.00% | 1.42 | 1.44 | 1.41 | 1.42 | 1.42 | 1.32 | 93,030 |   |  			
            | 10/23/2020 | -0.01 / -0.70% | 1.43 | 1.43 | 1.39 | 1.42 | 1.40 | 1.32 | 300,580 |   |  
            | 10/22/2020 | 0.00 / 0.00% | 1.42 | 1.43 | 1.40 | 1.43 | 1.41 | 1.33 | 90,520 |   |  			
            | 10/21/2020 | 0.00 / 0.00% | 1.43 | 1.44 | 1.42 | 1.43 | 1.43 | 1.33 | 59,270 |   |  
            | 10/20/2020 | -0.01 / -0.69% | 1.42 | 1.44 | 1.42 | 1.43 | 1.43 | 1.33 | 68,590 |   |  			
            | 10/19/2020 | -0.01 / -0.69% | 1.45 | 1.45 | 1.43 | 1.44 | 1.45 | 1.34 | 64,860 |   |  
            | 10/16/2020 | 0.00 / 0.00% | 1.44 | 1.45 | 1.44 | 1.45 | 1.45 | 1.35 | 74,350 |   |  			
            | 10/15/2020 | +0.02 / +1.40% | 1.45 | 1.46 | 1.42 | 1.45 | 1.43 | 1.35 | 138,020 |   |  
            | 10/14/2020 | -0.02 / -1.38% | 1.47 | 1.47 | 1.43 | 1.43 | 1.43 | 1.33 | 211,240 |   |  			
            | 10/13/2020 | -0.01 / -0.68% | 1.46 | 1.48 | 1.42 | 1.45 | 1.44 | 1.35 | 243,530 |   |  
            | 10/12/2020 | +0.01 / +0.69% | 1.48 | 1.51 | 1.46 | 1.46 | 1.49 | 1.36 | 253,850 |   |  			
            | 10/9/2020 | -0.04 / -2.68% | 1.49 | 1.49 | 1.45 | 1.45 | 1.46 | 1.35 | 261,800 |   |  
            | 10/8/2020 | +0.01 / +0.68% | 1.50 | 1.50 | 1.47 | 1.49 | 1.48 | 1.39 | 310,410 |   |  			
            | 10/7/2020 | -0.02 / -1.33% | 1.50 | 1.50 | 1.48 | 1.48 | 1.50 | 1.38 | 88,090 |   |  
            | 10/6/2020 | +0.03 / +2.04% | 1.48 | 1.51 | 1.46 | 1.50 | 1.48 | 1.40 | 401,090 |   |  			
            | 10/5/2020 | 0.00 / 0.00% | 1.46 | 1.48 | 1.45 | 1.47 | 1.47 | 1.37 | 118,820 |   |  
            | 10/2/2020 | -0.03 / -2.00% | 1.50 | 1.50 | 1.45 | 1.47 | 1.46 | 1.37 | 243,070 |   |  			
            | 10/1/2020 | +0.01 / +0.67% | 1.49 | 1.51 | 1.48 | 1.50 | 1.50 | 1.40 | 353,060 |   |  
            | 9/30/2020 | +0.01 / +0.68% | 1.46 | 1.49 | 1.45 | 1.49 | 1.46 | 1.39 | 141,580 |   |  			
            | 9/29/2020 | +0.01 / +0.68% | 1.50 | 1.50 | 1.47 | 1.48 | 1.49 | 1.38 | 295,750 |   |  
            | 9/28/2020 | +0.09 / +6.52% | 1.44 | 1.47 | 1.39 | 1.47 | 1.45 | 1.37 | 143,650 |   |  			
            | 9/25/2020 | -0.07 / -4.83% | 1.45 | 1.47 | 1.35 | 1.38 | 1.40 | 1.28 | 227,860 |   |  
            | 9/24/2020 | -0.02 / -1.36% | 1.47 | 1.47 | 1.44 | 1.45 | 1.45 | 1.35 | 382,310 |   |  			
            | 9/23/2020 | 0.00 / 0.00% | 1.46 | 1.50 | 1.45 | 1.47 | 1.46 | 1.37 | 235,910 |   |  
            | 9/22/2020 | -0.03 / -2.00% | 1.50 | 1.50 | 1.47 | 1.47 | 1.48 | 1.37 | 282,680 |   |  			
            | 9/21/2020 | 0.00 / 0.00% | 1.49 | 1.51 | 1.49 | 1.50 | 1.50 | 1.40 | 133,080 |   |  
            | 9/18/2020 | +0.02 / +1.35% | 1.48 | 1.51 | 1.48 | 1.50 | 1.50 | 1.40 | 129,380 |   |  |