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            | 
                    Closing price on 10/16/2018
                 |  |  
    
        |           
                
                    | Open | 4.50 |  
                    | High | 4.50 |  
                    | Low | 4.50 |  
                    | Volume | 4,180 |  
                    | Split-adjusted Price | 3.48 |  
                
             | 
 |  DAS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/16/2018 | 0.00 / 0.00% | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | 3.48 | 4,180 |   |  
            | 10/15/2018 | 0.00 / 0.00% | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | 3.48 | 0 |   |  			
            | 10/12/2018 | 0.00 / 0.00% | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | 3.48 | 0 |   |  
            | 10/11/2018 | 0.00 / 0.00% | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | 3.48 | 0 |   |  			
            | 10/10/2018 | 0.00 / 0.00% | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | 3.48 | 0 |   |  
            | 10/9/2018 | -0.50 / -10.00% | 4.50 | 4.50 | 4.50 | 4.50 | 4.50 | 3.48 | 10,400 |   |  			
            | 10/8/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 10/5/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 15,000 |   |  			
            | 10/4/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 10/3/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  			
            | 10/2/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 10/1/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 13,000 |   |  			
            | 9/28/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/27/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  			
            | 9/26/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/25/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 22,000 |   |  			
            | 9/24/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/21/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  			
            | 9/20/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/19/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  			
            | 9/18/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/17/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  			
            | 9/14/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/13/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  			
            | 9/12/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  
            | 9/11/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 22,000 |   |  			
            | 9/10/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 4,209 |   |  
            | 9/7/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 10,920 |   |  			
            | 9/6/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 28,160 |   |  
            | 9/5/2018 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 3.87 | 0 |   |  |