| 
    
        
            | 
                    Closing price on 2/21/2019
                 |  |  
    
        |           
                
                    | Open | 1.50 |  
                    | High | 1.60 |  
                    | Low | 1.50 |  
                    | Volume | 4,300 |  
                    | Split-adjusted Price | 1.60 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/21/2019 | +0.10 / +6.67% | 1.50 | 1.60 | 1.50 | 1.60 | 1.50 | 1.60 | 4,300 |   |  
            | 2/20/2019 | -0.10 / -6.25% | 1.60 | 1.60 | 1.50 | 1.50 | 1.50 | 1.50 | 23,800 |   |  			
            | 2/19/2019 | 0.00 / 0.00% | 1.50 | 1.60 | 1.50 | 1.60 | 1.53 | 1.60 | 64,800 |   |  
            | 2/18/2019 | -0.10 / -5.88% | 1.60 | 1.60 | 1.60 | 1.60 | 1.60 | 1.60 | 11,000 |   |  			
            | 2/15/2019 | +0.10 / +6.25% | 1.60 | 1.70 | 1.50 | 1.70 | 1.51 | 1.70 | 340,400 |   |  
            | 2/14/2019 | -0.10 / -5.88% | 1.60 | 1.60 | 1.60 | 1.60 | 1.60 | 1.60 | 5,600 |   |  			
            | 2/13/2019 | 0.00 / 0.00% | 1.60 | 1.70 | 1.60 | 1.70 | 1.60 | 1.70 | 77,500 |   |  
            | 2/12/2019 | 0.00 / 0.00% | 1.60 | 1.70 | 1.60 | 1.70 | 1.60 | 1.70 | 148,300 |   |  			
            | 2/11/2019 | +0.10 / +6.25% | 1.60 | 1.70 | 1.60 | 1.70 | 1.60 | 1.70 | 348,500 |   |  
            | 2/1/2019 | 0.00 / 0.00% | 1.60 | 1.60 | 1.50 | 1.60 | 1.57 | 1.60 | 38,600 |   |  			
            | 1/31/2019 | -0.10 / -5.88% | 1.70 | 1.70 | 1.60 | 1.60 | 1.60 | 1.60 | 137,800 |   |  
            | 1/30/2019 | -0.10 / -5.56% | 1.70 | 1.70 | 1.70 | 1.70 | 1.70 | 1.70 | 200 |   |  			
            | 1/29/2019 | 0.00 / 0.00% | 1.80 | 1.80 | 1.80 | 1.80 | 1.80 | 1.80 | 10,000 |   |  
            | 1/28/2019 | 0.00 / 0.00% | 1.80 | 1.80 | 1.70 | 1.80 | 1.75 | 1.80 | 11,000 |   |  			
            | 1/25/2019 | -0.10 / -5.26% | 1.80 | 1.80 | 1.80 | 1.80 | 1.80 | 1.80 | 35,500 |   |  
            | 1/24/2019 | 0.00 / 0.00% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 100 |   |  			
            | 1/23/2019 | 0.00 / 0.00% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1,000 |   |  
            | 1/22/2019 | 0.00 / 0.00% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 500 |   |  			
            | 1/21/2019 | 0.00 / 0.00% | 1.90 | 2.00 | 1.90 | 1.90 | 1.90 | 1.90 | 48,000 |   |  
            | 1/18/2019 | 0.00 / 0.00% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 500 |   |  			
            | 1/17/2019 | 0.00 / 0.00% | 1.80 | 1.90 | 1.80 | 1.90 | 1.80 | 1.90 | 28,900 |   |  
            | 1/16/2019 | +0.10 / +5.56% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 3,700 |   |  			
            | 1/15/2019 | -0.10 / -5.26% | 2.00 | 2.00 | 1.80 | 1.80 | 1.82 | 1.80 | 42,400 |   |  
            | 1/14/2019 | 0.00 / 0.00% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1,200 |   |  			
            | 1/11/2019 | 0.00 / 0.00% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 13,200 |   |  
            | 1/10/2019 | -0.20 / -9.52% | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 1.90 | 300 |   |  			
            | 1/9/2019 | +0.10 / +5.00% | 1.90 | 2.10 | 1.90 | 2.10 | 1.91 | 2.10 | 1,400 |   |  
            | 1/8/2019 | +0.10 / +5.26% | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 6,789 |   |  			
            | 1/7/2019 | -0.20 / -9.52% | 2.00 | 2.00 | 1.90 | 1.90 | 1.92 | 1.90 | 32,200 |   |  
            | 1/4/2019 | +0.10 / +5.00% | 2.00 | 2.10 | 2.00 | 2.10 | 2.08 | 2.10 | 600 |   |  |