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            | 
                    Closing price on 3/11/2021
                 |  |  
    
        |           
                
                    | Open | 9.10 |  
                    | High | 9.80 |  
                    | Low | 9.00 |  
                    | Volume | 8,300 |  
                    | Split-adjusted Price | 5.07 |  
                
             | 
 |  DSC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/11/2021 | 0.00 / 0.00% | 9.10 | 9.80 | 9.00 | 9.00 | 9.12 | 5.07 | 8,300 |   |  
            | 3/10/2021 | +1.20 / +13.79% | 8.70 | 10.00 | 8.70 | 9.90 | 9.03 | 5.58 | 30,700 |   |  			
            | 3/9/2021 | -0.20 / -2.25% | 9.30 | 9.30 | 8.70 | 8.70 | 8.72 | 4.91 | 14,800 |   |  
            | 3/8/2021 | +0.20 / +2.25% | 9.20 | 9.20 | 8.50 | 9.10 | 8.91 | 5.13 | 12,300 |   |  			
            | 3/5/2021 | +0.60 / +6.98% | 8.70 | 9.20 | 8.70 | 9.20 | 8.91 | 5.19 | 7,300 |   |  
            | 3/4/2021 | 0.00 / 0.00% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 4.85 | 0 |   |  			
            | 3/3/2021 | -0.10 / -1.10% | 9.30 | 9.30 | 8.50 | 9.00 | 8.59 | 5.07 | 5,800 |   |  
            | 3/2/2021 | 0.00 / 0.00% | 9.10 | 9.20 | 9.10 | 9.20 | 9.15 | 5.19 | 1,900 |   |  			
            | 3/1/2021 | -0.10 / -1.06% | 9.40 | 9.40 | 8.40 | 9.30 | 9.17 | 5.24 | 5,000 |   |  
            | 2/26/2021 | +0.30 / +3.26% | 9.50 | 9.50 | 9.20 | 9.50 | 9.43 | 5.36 | 800 |   |  			
            | 2/25/2021 | +0.80 / +9.52% | 9.50 | 9.50 | 8.50 | 9.20 | 9.20 | 5.19 | 6,700 |   |  
            | 2/24/2021 | +0.10 / +1.20% | 8.40 | 8.50 | 8.30 | 8.40 | 8.38 | 4.74 | 17,400 |   |  			
            | 2/23/2021 | 0.00 / 0.00% | 8.40 | 8.40 | 8.30 | 8.40 | 8.35 | 4.74 | 3,900 |   |  
            | 2/22/2021 | -0.50 / -5.68% | 8.60 | 8.60 | 8.30 | 8.30 | 8.42 | 4.68 | 7,100 |   |  			
            | 2/19/2021 | -0.50 / -5.56% | 9.20 | 9.20 | 8.50 | 8.50 | 8.76 | 4.79 | 800 |   |  
            | 2/18/2021 | +0.10 / +1.11% | 9.00 | 9.10 | 9.00 | 9.10 | 9.00 | 5.13 | 4,100 |   |  			
            | 2/17/2021 | 0.00 / 0.00% | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 5.07 | 700 |   |  
            | 2/9/2021 | +0.80 / +9.76% | 9.00 | 9.00 | 9.00 | 9.00 | 9.00 | 5.07 | 100 |   |  			
            | 2/8/2021 | -0.10 / -1.23% | 8.30 | 8.30 | 8.00 | 8.00 | 8.17 | 4.51 | 2,400 |   |  
            | 2/5/2021 | -0.20 / -2.44% | 8.20 | 8.20 | 8.00 | 8.00 | 8.11 | 4.51 | 1,100 |   |  			
            | 2/4/2021 | +0.60 / +7.59% | 8.30 | 8.50 | 8.00 | 8.50 | 8.22 | 4.79 | 7,800 |   |  
            | 2/3/2021 | +0.20 / +2.56% | 7.80 | 8.00 | 7.80 | 8.00 | 7.90 | 4.51 | 2,000 |   |  			
            | 2/2/2021 | -0.10 / -1.27% | 7.90 | 7.90 | 7.80 | 7.80 | 7.84 | 4.40 | 8,000 |   |  
            | 2/1/2021 | 0.00 / 0.00% | 7.90 | 7.90 | 7.90 | 7.90 | 7.90 | 4.45 | 0 |   |  			
            | 1/29/2021 | -0.50 / -5.81% | 8.00 | 8.10 | 7.50 | 8.10 | 7.90 | 4.57 | 8,500 |   |  
            | 1/28/2021 | 0.00 / 0.00% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 4.85 | 0 |   |  			
            | 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 |   |  |