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                    Closing price on 7/22/2020
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                    | Open | 2.00 |  
                    | High | 2.40 |  
                    | Low | 2.00 |  
                    | Volume | 9,200 |  
                    | Split-adjusted Price | 2.40 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/22/2020 | +0.20 / +9.09% | 2.00 | 2.40 | 2.00 | 2.40 | 2.23 | 2.40 | 9,200 |   |  
            | 7/21/2020 | -0.20 / -8.33% | 2.20 | 2.20 | 2.20 | 2.20 | 2.20 | 2.20 | 0 |   |  			
            | 7/20/2020 | +0.20 / +9.09% | 2.20 | 2.40 | 2.20 | 2.40 | 2.22 | 2.40 | 10,300 |   |  
            | 7/17/2020 | 0.00 / 0.00% | 2.20 | 2.20 | 2.10 | 2.20 | 2.19 | 2.20 | 20,600 |   |  			
            | 7/16/2020 | 0.00 / 0.00% | 2.10 | 2.20 | 2.00 | 2.20 | 2.03 | 2.20 | 11,700 |   |  
            | 7/15/2020 | -0.10 / -4.35% | 2.20 | 2.20 | 2.20 | 2.20 | 2.20 | 2.20 | 0 |   |  			
            | 7/14/2020 | 0.00 / 0.00% | 2.20 | 2.30 | 2.20 | 2.30 | 2.23 | 2.30 | 3,000 |   |  
            | 7/13/2020 | +0.20 / +9.52% | 2.00 | 2.30 | 2.00 | 2.30 | 2.02 | 2.30 | 65,000 |   |  			
            | 7/10/2020 | 0.00 / 0.00% | 2.10 | 2.10 | 2.10 | 2.10 | 2.10 | 2.10 | 0 |   |  
            | 7/9/2020 | -0.30 / -12.50% | 2.10 | 2.10 | 2.10 | 2.10 | 2.10 | 2.10 | 15,000 |   |  			
            | 7/8/2020 | +0.30 / +14.29% | 2.10 | 2.40 | 2.10 | 2.40 | 2.17 | 2.40 | 11,800 |   |  
            | 7/7/2020 | +0.10 / +5.00% | 2.20 | 2.20 | 2.00 | 2.10 | 2.06 | 2.10 | 16,000 |   |  			
            | 7/6/2020 | -0.30 / -13.04% | 2.10 | 2.10 | 2.00 | 2.00 | 2.00 | 2.00 | 50,300 |   |  
            | 7/3/2020 | +0.30 / +14.29% | 2.20 | 2.40 | 2.20 | 2.40 | 2.28 | 2.40 | 622,800 |   |  			
            | 7/2/2020 | -0.30 / -12.50% | 2.10 | 2.30 | 2.10 | 2.10 | 2.12 | 2.10 | 900 |   |  
            | 7/1/2020 | +0.30 / +14.29% | 2.40 | 2.40 | 2.40 | 2.40 | 2.40 | 2.40 | 10,000 |   |  			
            | 6/30/2020 | -0.40 / -16.00% | 2.20 | 2.20 | 2.10 | 2.10 | 2.18 | 2.10 | 1,300 |   |  
            | 6/29/2020 | +0.30 / +13.64% | 2.10 | 2.50 | 2.10 | 2.50 | 2.33 | 2.50 | 20,600 |   |  			
            | 6/26/2020 | +0.20 / +9.09% | 2.10 | 2.40 | 2.10 | 2.40 | 2.18 | 2.40 | 400 |   |  
            | 6/25/2020 | +0.10 / +4.76% | 2.10 | 2.40 | 2.10 | 2.20 | 2.36 | 2.20 | 28,500 |   |  			
            | 6/24/2020 | 0.00 / 0.00% | 2.10 | 2.10 | 2.10 | 2.10 | 2.10 | 2.10 | 3,300 |   |  
            | 6/23/2020 | -0.10 / -4.55% | 2.00 | 2.20 | 2.00 | 2.10 | 2.03 | 2.10 | 24,000 |   |  			
            | 6/22/2020 | 0.00 / 0.00% | 2.00 | 2.20 | 2.00 | 2.20 | 2.20 | 2.20 | 205,700 |   |  
            | 6/19/2020 | -0.30 / -12.00% | 2.30 | 2.30 | 2.20 | 2.20 | 2.20 | 2.20 | 48,400 |   |  			
            | 6/18/2020 | 0.00 / 0.00% | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 0 |   |  
            | 6/17/2020 | +0.10 / +4.17% | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 100 |   |  			
            | 6/16/2020 | -0.10 / -4.00% | 2.40 | 2.40 | 2.40 | 2.40 | 2.40 | 2.40 | 500 |   |  
            | 6/15/2020 | +0.30 / +13.64% | 2.20 | 2.50 | 2.20 | 2.50 | 2.35 | 2.50 | 12,900 |   |  			
            | 6/12/2020 | -0.50 / -18.52% | 2.20 | 2.20 | 2.20 | 2.20 | 2.20 | 2.20 | 500 |   |  
            | 6/11/2020 | +0.20 / +8.00% | 2.50 | 2.70 | 2.20 | 2.70 | 2.27 | 2.70 | 14,500 |   |  |