| 
                 
                    Closing price on 5/17/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    14.50 | 
                 
                
                    | High | 
                    14.50 | 
                 
                
                    | Low | 
                    13.00 | 
                     
                
                    | Volume | 
                    62,500 | 
                                 
                
                    | Split-adjusted Price | 
                    6.17 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
DSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/17/2019
             | 
            
                +0.60 / +4.48%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                13.00
             |                           
            
                14.00
             | 
            
                13.06
             |                     
            
                6.17
             |                                 
            
                62,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2019
             | 
            
                +0.40 / +3.08%
             |             
            
                13.00
             |           
            
                13.40
             |               
            
                13.00
             |                           
            
                13.40
             | 
            
                13.00
             |                     
            
                5.90
             |                                 
            
                55,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.00
             |                     
            
                5.72
             |                                 
            
                15,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2019
             | 
            
                -0.40 / -2.99%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.01
             |                     
            
                5.72
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2019
             | 
            
                +0.30 / +2.29%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.40
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                5.90
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2019
             | 
            
                +1.30 / +10.08%
             |             
            
                13.40
             |           
            
                14.20
             |               
            
                13.00
             |                           
            
                14.20
             | 
            
                13.12
             |                     
            
                6.25
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2019
             | 
            
                -0.90 / -6.52%
             |             
            
                12.90
             |           
            
                12.90
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                5.68
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2019
             | 
            
                +0.40 / +2.99%
             |             
            
                12.80
             |           
            
                13.80
             |               
            
                12.80
             |                           
            
                13.80
             | 
            
                12.94
             |                     
            
                6.08
             |                                 
            
                50,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2019
             | 
            
                +1.10 / +8.94%
             |             
            
                12.00
             |           
            
                13.40
             |               
            
                12.00
             |                           
            
                13.40
             | 
            
                12.62
             |                     
            
                5.90
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2019
             | 
            
                -1.50 / -10.87%
             |             
            
                12.40
             |           
            
                12.40
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.33
             |                     
            
                5.42
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2019
             | 
            
                0.00 / 0.00%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                6.08
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2019
             | 
            
                0.00 / 0.00%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.80
             |                           
            
                13.80
             | 
            
                13.80
             |                     
            
                6.08
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2019
             | 
            
                +0.60 / +4.55%
             |             
            
                13.70
             |           
            
                13.80
             |               
            
                13.70
             |                           
            
                13.80
             | 
            
                13.75
             |                     
            
                6.08
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2019
             | 
            
                -1.60 / -10.81%
             |             
            
                14.00
             |           
            
                14.00
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.34
             |                     
            
                5.81
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2019
             | 
            
                +0.40 / +2.78%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                6.52
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2019
             | 
            
                +1.10 / +8.27%
             |             
            
                14.00
             |           
            
                14.50
             |               
            
                14.00
             |                           
            
                14.40
             | 
            
                14.38
             |                     
            
                6.34
             |                                 
            
                6,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2019
             | 
            
                -2.20 / -14.19%
             |             
            
                14.00
             |           
            
                14.00
             |               
            
                13.30
             |                           
            
                13.30
             | 
            
                13.41
             |                     
            
                5.86
             |                                 
            
                12,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2019
             | 
            
                +0.50 / +3.33%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                6.83
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2019
             | 
            
                +0.70 / +4.90%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.40
             |                           
            
                15.00
             | 
            
                14.96
             |                     
            
                6.61
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                14.50
             |           
            
                15.00
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.38
             |                     
            
                6.30
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2019
             | 
            
                0.00 / 0.00%
             |             
            
                14.30
             |           
            
                14.30
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.30
             |                     
            
                6.30
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2019
             | 
            
                +0.50 / +3.23%
             |             
            
                14.50
             |           
            
                16.00
             |               
            
                14.20
             |                           
            
                16.00
             | 
            
                14.27
             |                     
            
                7.05
             |                                 
            
                7,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2019
             | 
            
                -0.10 / -0.64%
             |             
            
                15.00
             |           
            
                15.50
             |               
            
                14.80
             |                           
            
                15.50
             | 
            
                15.09
             |                     
            
                6.83
             |                                 
            
                1,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2019
             | 
            
                -1.20 / -7.14%
             |             
            
                15.50
             |           
            
                16.00
             |               
            
                15.00
             |                           
            
                15.60
             | 
            
                15.46
             |                     
            
                6.87
             |                                 
            
                4,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2019
             | 
            
                +0.20 / +1.20%
             |             
            
                15.80
             |           
            
                16.80
             |               
            
                15.80
             |                           
            
                16.80
             | 
            
                16.30
             |                     
            
                7.40
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2019
             | 
            
                +0.10 / +0.61%
             |             
            
                16.50
             |           
            
                17.60
             |               
            
                16.50
             |                           
            
                16.60
             | 
            
                16.90
             |                     
            
                7.31
             |                                 
            
                6,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2019
             | 
            
                +0.40 / +2.58%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                16.47
             |                     
            
                7.00
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2019
             | 
            
                0.00 / 0.00%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.63
             |                     
            
                6.83
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/3/2019
             | 
            
                -1.00 / -6.06%
             |             
            
                15.50
             |           
            
                15.50
             |               
            
                15.50
             |                           
            
                15.50
             | 
            
                15.50
             |                     
            
                6.83
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2019
             | 
            
                +1.70 / +11.49%
             |             
            
                16.20
             |           
            
                17.00
             |               
            
                16.20
             |                           
            
                16.50
             | 
            
                16.55
             |                     
            
                7.27
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |