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                    Closing price on 9/14/2021
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        |           
                
                    | Open | 13.70 |  
                    | High | 15.00 |  
                    | Low | 13.70 |  
                    | Volume | 26,700 |  
                    | Split-adjusted Price | 11.85 |  
                
             | 
 |  MDC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/14/2021 | +1.30 / +9.49% | 13.70 | 15.00 | 13.70 | 15.00 | 14.94 | 11.85 | 26,700 |   |  
            | 9/13/2021 | +1.20 / +9.60% | 13.10 | 13.70 | 13.10 | 13.70 | 13.57 | 10.83 | 54,100 |   |  			
            | 9/10/2021 | +0.50 / +4.17% | 12.10 | 13.20 | 12.10 | 12.50 | 12.61 | 9.88 | 41,000 |   |  
            | 9/9/2021 | +0.20 / +1.69% | 12.00 | 12.10 | 12.00 | 12.00 | 12.03 | 9.48 | 14,800 |   |  			
            | 9/8/2021 | -1.30 / -9.92% | 12.90 | 12.90 | 11.80 | 11.80 | 11.94 | 9.32 | 54,700 |   |  
            | 9/7/2021 | +1.00 / +8.26% | 12.80 | 13.30 | 12.80 | 13.10 | 13.15 | 10.35 | 49,200 |   |  			
            | 9/6/2021 | +1.10 / +10.00% | 11.20 | 12.10 | 11.00 | 12.10 | 12.01 | 9.56 | 29,800 |   |  
            | 9/1/2021 | +1.00 / +10.00% | 10.50 | 11.00 | 10.20 | 11.00 | 10.89 | 8.69 | 92,508 |   |  			
            | 8/31/2021 | -0.40 / -3.85% | 10.40 | 10.50 | 9.80 | 10.00 | 10.27 | 7.90 | 22,500 |   |  
            | 8/30/2021 | -0.20 / -1.89% | 10.80 | 10.80 | 9.60 | 10.40 | 10.63 | 8.22 | 31,800 |   |  			
            | 8/27/2021 | +0.10 / +0.95% | 10.60 | 10.60 | 10.60 | 10.60 | 10.60 | 8.38 | 100 |   |  
            | 8/26/2021 | +0.20 / +1.94% | 10.20 | 11.00 | 10.20 | 10.50 | 10.67 | 8.30 | 24,000 |   |  			
            | 8/25/2021 | +0.90 / +9.57% | 9.50 | 10.30 | 9.50 | 10.30 | 10.10 | 8.14 | 50,700 |   |  
            | 8/24/2021 | +0.20 / +2.17% | 8.40 | 9.40 | 8.40 | 9.40 | 8.89 | 7.43 | 1,800 |   |  			
            | 8/23/2021 | -0.40 / -4.17% | 8.80 | 9.30 | 8.80 | 9.20 | 8.89 | 7.27 | 2,700 |   |  
            | 8/20/2021 | 0.00 / 0.00% | 9.90 | 9.90 | 8.80 | 9.60 | 9.55 | 7.59 | 6,700 |   |  			
            | 8/19/2021 | +0.10 / +1.05% | 9.30 | 9.60 | 9.30 | 9.60 | 9.43 | 7.59 | 24,400 |   |  
            | 8/18/2021 | +0.30 / +3.26% | 9.20 | 9.50 | 9.20 | 9.50 | 9.31 | 7.51 | 2,900 |   |  			
            | 8/17/2021 | -0.40 / -4.17% | 9.60 | 9.60 | 9.20 | 9.20 | 9.33 | 7.27 | 1,500 |   |  
            | 8/16/2021 | +0.80 / +9.09% | 8.90 | 9.60 | 8.90 | 9.60 | 9.02 | 7.59 | 12,300 |   |  			
            | 8/13/2021 | -0.70 / -7.37% | 8.80 | 8.80 | 8.80 | 8.80 | 8.80 | 6.95 | 1,700 |   |  
            | 8/12/2021 | -0.60 / -5.94% | 10.40 | 10.40 | 9.30 | 9.50 | 9.55 | 7.51 | 2,200 |   |  			
            | 8/11/2021 | +0.60 / +6.32% | 10.30 | 10.40 | 10.10 | 10.10 | 10.35 | 7.98 | 22,700 |   |  
            | 8/10/2021 | +0.80 / +9.20% | 9.00 | 9.50 | 9.00 | 9.50 | 9.18 | 7.51 | 33,000 |   |  			
            | 8/9/2021 | -0.20 / -2.25% | 8.30 | 8.70 | 8.30 | 8.70 | 8.52 | 6.87 | 2,700 |   |  
            | 8/6/2021 | 0.00 / 0.00% | 9.00 | 9.00 | 8.90 | 8.90 | 9.00 | 7.03 | 400 |   |  			
            | 8/5/2021 | +0.40 / +4.71% | 8.50 | 8.90 | 8.50 | 8.90 | 8.65 | 7.03 | 5,200 |   |  
            | 8/4/2021 | +0.10 / +1.19% | 8.50 | 8.50 | 8.50 | 8.50 | 8.50 | 6.72 | 500 |   |  			
            | 8/3/2021 | -0.10 / -1.18% | 8.50 | 8.50 | 8.40 | 8.40 | 8.50 | 6.64 | 900 |   |  
            | 8/2/2021 | -0.50 / -5.56% | 8.40 | 8.50 | 8.40 | 8.50 | 8.50 | 6.72 | 200 |   |  |