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            | 
                    Closing price on 8/25/2020
                 |  |  
    
        |           
                
                    | Open | 1.44 |  
                    | High | 1.47 |  
                    | Low | 1.39 |  
                    | Volume | 160,300 |  
                    | Split-adjusted Price | 1.31 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/25/2020 | -0.02 / -1.40% | 1.44 | 1.47 | 1.39 | 1.41 | 1.43 | 1.31 | 160,300 |   |  
            | 8/24/2020 | +0.02 / +1.42% | 1.41 | 1.45 | 1.41 | 1.43 | 1.44 | 1.33 | 114,260 |   |  			
            | 8/21/2020 | -0.01 / -0.70% | 1.41 | 1.43 | 1.41 | 1.41 | 1.41 | 1.31 | 77,200 |   |  
            | 8/20/2020 | 0.00 / 0.00% | 1.42 | 1.43 | 1.40 | 1.42 | 1.40 | 1.32 | 40,700 |   |  			
            | 8/19/2020 | 0.00 / 0.00% | 1.43 | 1.44 | 1.41 | 1.42 | 1.42 | 1.32 | 88,800 |   |  
            | 8/18/2020 | -0.03 / -2.07% | 1.47 | 1.50 | 1.42 | 1.42 | 1.46 | 1.32 | 88,560 |   |  			
            | 8/17/2020 | +0.04 / +2.84% | 1.38 | 1.45 | 1.38 | 1.45 | 1.42 | 1.35 | 271,410 |   |  
            | 8/14/2020 | +0.02 / +1.44% | 1.39 | 1.41 | 1.38 | 1.41 | 1.39 | 1.31 | 166,500 |   |  			
            | 8/13/2020 | 0.00 / 0.00% | 1.36 | 1.40 | 1.36 | 1.39 | 1.36 | 1.29 | 15,440 |   |  
            | 8/12/2020 | 0.00 / 0.00% | 1.37 | 1.40 | 1.37 | 1.39 | 1.40 | 1.29 | 237,980 |   |  			
            | 8/11/2020 | 0.00 / 0.00% | 1.36 | 1.40 | 1.36 | 1.39 | 1.39 | 1.29 | 42,590 |   |  
            | 8/10/2020 | 0.00 / 0.00% | 1.40 | 1.40 | 1.36 | 1.39 | 1.36 | 1.29 | 63,130 |   |  			
            | 8/7/2020 | +0.01 / +0.72% | 1.39 | 1.39 | 1.36 | 1.39 | 1.38 | 1.29 | 27,140 |   |  
            | 8/6/2020 | +0.02 / +1.47% | 1.36 | 1.39 | 1.35 | 1.38 | 1.37 | 1.28 | 128,440 |   |  			
            | 8/5/2020 | 0.00 / 0.00% | 1.37 | 1.37 | 1.33 | 1.36 | 1.35 | 1.27 | 110,090 |   |  
            | 8/4/2020 | +0.04 / +3.03% | 1.35 | 1.38 | 1.33 | 1.36 | 1.34 | 1.27 | 41,710 |   |  			
            | 8/3/2020 | +0.03 / +2.33% | 1.31 | 1.33 | 1.30 | 1.32 | 1.32 | 1.23 | 72,150 |   |  
            | 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 |   |  |