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            | 
                    Closing price on 1/27/2021
                 |  |  
    
        |           
                
                    | Open | 8.60 |  
                    | High | 8.60 |  
                    | Low | 8.60 |  
                    | Volume | 3,900 |  
                    | Split-adjusted Price | 4.85 |  
                
             | 
 |  DSC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/27/2021 | 0.00 / 0.00% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 4.85 | 3,900 |   |  
            | 1/26/2021 | -0.20 / -2.27% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 4.85 | 2,100 |   |  			
            | 1/25/2021 | -0.40 / -4.44% | 9.10 | 9.10 | 8.50 | 8.60 | 8.79 | 4.85 | 4,200 |   |  
            | 1/22/2021 | +0.10 / +1.11% | 9.00 | 9.10 | 8.90 | 9.10 | 9.00 | 5.13 | 3,000 |   |  			
            | 1/21/2021 | +0.30 / +3.37% | 9.00 | 9.20 | 8.60 | 9.20 | 8.95 | 5.19 | 6,300 |   |  
            | 1/20/2021 | +0.20 / +2.27% | 9.00 | 9.00 | 8.80 | 9.00 | 8.90 | 5.07 | 3,900 |   |  			
            | 1/19/2021 | -0.80 / -8.60% | 9.80 | 9.80 | 8.10 | 8.50 | 8.82 | 4.79 | 10,600 |   |  
            | 1/18/2021 | -0.30 / -3.16% | 9.30 | 9.50 | 9.20 | 9.20 | 9.27 | 5.19 | 4,500 |   |  			
            | 1/15/2021 | -0.90 / -9.00% | 10.00 | 10.00 | 9.10 | 9.10 | 9.46 | 5.13 | 26,500 |   |  
            | 1/14/2021 | -0.30 / -2.65% | 10.00 | 11.00 | 9.80 | 11.00 | 9.99 | 6.20 | 16,900 |   |  			
            | 1/13/2021 | -0.50 / -4.39% | 11.40 | 11.40 | 10.90 | 10.90 | 11.30 | 6.15 | 6,200 |   |  
            | 1/12/2021 | +0.30 / +2.70% | 11.40 | 12.00 | 11.00 | 11.40 | 11.40 | 6.43 | 7,400 |   |  			
            | 1/11/2021 | +1.40 / +14.29% | 10.00 | 11.20 | 10.00 | 11.20 | 11.15 | 6.31 | 17,400 |   |  
            | 1/8/2021 | +1.20 / +13.95% | 9.70 | 9.80 | 9.50 | 9.80 | 9.76 | 5.53 | 14,600 |   |  			
            | 1/7/2021 | -0.20 / -2.27% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 4.85 | 400 |   |  
            | 1/6/2021 | +0.40 / +4.65% | 8.40 | 9.30 | 7.40 | 9.00 | 8.76 | 5.07 | 16,000 |   |  			
            | 1/5/2021 | 0.00 / 0.00% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 4.85 | 1,000 |   |  
            | 1/4/2021 | +1.00 / +12.50% | 8.50 | 9.00 | 8.50 | 9.00 | 8.57 | 5.07 | 25,400 |   |  			
            | 12/31/2020 | 0.00 / 0.00% | 8.00 | 8.00 | 8.00 | 8.00 | 8.00 | 4.51 | 1,100 |   |  
            | 12/30/2020 | +0.50 / +6.67% | 7.80 | 8.20 | 7.80 | 8.00 | 8.04 | 4.51 | 9,900 |   |  			
            | 12/29/2020 | +0.90 / +13.04% | 6.90 | 7.80 | 6.90 | 7.80 | 7.46 | 4.40 | 4,514,500 |   |  
            | 12/28/2020 | +0.20 / +2.99% | 6.70 | 6.90 | 6.70 | 6.90 | 6.90 | 3.89 | 5,500 |   |  			
            | 12/25/2020 | +0.10 / +1.52% | 6.70 | 6.70 | 6.70 | 6.70 | 6.70 | 3.78 | 900 |   |  
            | 12/24/2020 | +0.20 / +3.08% | 6.60 | 6.70 | 6.60 | 6.70 | 6.64 | 3.78 | 2,500 |   |  			
            | 12/23/2020 | +0.30 / +4.84% | 6.50 | 6.50 | 6.50 | 6.50 | 6.50 | 3.66 | 3,100 |   |  
            | 12/22/2020 | 0.00 / 0.00% | 5.80 | 6.40 | 5.70 | 6.30 | 6.16 | 3.55 | 6,600 |   |  			
            | 12/21/2020 | 0.00 / 0.00% | 6.30 | 6.30 | 6.30 | 6.30 | 6.30 | 3.55 | 3,600 |   |  
            | 12/18/2020 | 0.00 / 0.00% | 6.30 | 6.30 | 6.30 | 6.30 | 6.30 | 3.55 | 0 |   |  			
            | 12/17/2020 | +0.30 / +4.92% | 6.10 | 6.40 | 6.10 | 6.40 | 6.33 | 3.61 | 400 |   |  
            | 12/16/2020 | 0.00 / 0.00% | 6.10 | 6.10 | 6.10 | 6.10 | 6.10 | 3.44 | 5,400 |   |  |