| 
                 
                    Closing price on 3/15/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.70 | 
                 
                
                    | High | 
                    2.70 | 
                 
                
                    | Low | 
                    2.60 | 
                     
                
                    | Volume | 
                    22,000 | 
                                 
                
                    | Split-adjusted Price | 
                    2.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SDP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/15/2018
             | 
            
                -0.10 / -3.70%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.68
             |                     
            
                2.60
             |                                 
            
                22,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2018
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                14,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.77
             |                     
            
                2.80
             |                                 
            
                4,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2018
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/9/2018
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                13,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                19,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2018
             | 
            
                +0.20 / +7.69%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.60
             |                           
            
                2.80
             | 
            
                2.72
             |                     
            
                2.80
             |                                 
            
                25,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2018
             | 
            
                -0.10 / -3.70%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.67
             |                     
            
                2.60
             |                                 
            
                11,908
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2018
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.77
             |                     
            
                2.70
             |                                 
            
                7,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.78
             |                     
            
                2.80
             |                                 
            
                41,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                16,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.77
             |                     
            
                2.80
             |                                 
            
                3,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2018
             | 
            
                +0.10 / +3.70%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.70
             |                     
            
                2.80
             |                                 
            
                4,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2018
             | 
            
                -0.20 / -6.90%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.76
             |                     
            
                2.70
             |                                 
            
                97,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2018
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                20,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2018
             | 
            
                +0.10 / +3.70%
             |             
            
                2.70
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.76
             |                     
            
                2.80
             |                                 
            
                26,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2018
             | 
            
                +0.20 / +8.00%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.66
             |                     
            
                2.70
             |                                 
            
                27,460
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2018
             | 
            
                +0.20 / +8.70%
             |             
            
                2.30
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.50
             | 
            
                2.48
             |                     
            
                2.50
             |                                 
            
                59,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2018
             | 
            
                +0.20 / +9.52%
             |             
            
                2.10
             |           
            
                2.30
             |               
            
                2.00
             |                           
            
                2.30
             | 
            
                2.20
             |                     
            
                2.30
             |                                 
            
                59,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2018
             | 
            
                -0.20 / -8.70%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                2.10
             |                           
            
                2.10
             | 
            
                2.14
             |                     
            
                2.10
             |                                 
            
                24,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2018
             | 
            
                +0.10 / +4.55%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.20
             |                     
            
                2.30
             |                                 
            
                14,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2018
             | 
            
                +0.10 / +4.76%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                20,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2018
             | 
            
                -0.20 / -8.70%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                2.10
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                26,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.30
             |           
            
                2.30
             |               
            
                2.10
             |                           
            
                2.30
             | 
            
                2.18
             |                     
            
                2.30
             |                                 
            
                73,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2018
             | 
            
                -0.20 / -8.00%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.30
             |                           
            
                2.30
             | 
            
                2.35
             |                     
            
                2.30
             |                                 
            
                23,900
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2018
             | 
            
                -0.20 / -7.41%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.50
             |                           
            
                2.50
             | 
            
                2.50
             |                     
            
                2.50
             |                                 
            
                61,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2018
             | 
            
                +0.10 / +3.85%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.60
             |                     
            
                2.70
             |                                 
            
                46,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2018
             | 
            
                -0.10 / -3.70%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                8,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2018
             | 
            
                +0.10 / +3.85%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.60
             |                     
            
                2.70
             |                                 
            
                9,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |