| 
                 
                    Closing price on 11/20/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.90 | 
                 
                
                    | High | 
                    4.00 | 
                 
                
                    | Low | 
                    3.90 | 
                     
                
                    | Volume | 
                    28,200 | 
                                 
                
                    | Split-adjusted Price | 
                    4.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
WSS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/20/2017
             | 
            
                +0.10 / +2.56%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.91
             |                     
            
                4.00
             |                                 
            
                28,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2017
             | 
            
                -0.20 / -4.88%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                4.05
             |                     
            
                3.90
             |                                 
            
                21,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2017
             | 
            
                +0.20 / +5.13%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.00
             |                     
            
                4.10
             |                                 
            
                11,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2017
             | 
            
                +0.10 / +2.63%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.83
             |                     
            
                3.90
             |                                 
            
                27,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2017
             | 
            
                -0.30 / -7.32%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.86
             |                     
            
                3.80
             |                                 
            
                59,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2017
             | 
            
                -0.10 / -2.38%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.00
             |                     
            
                4.10
             |                                 
            
                25,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2017
             | 
            
                +0.10 / +2.44%
             |             
            
                4.00
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.07
             |                     
            
                4.20
             |                                 
            
                12,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2017
             | 
            
                -0.10 / -2.38%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                4.10
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2017
             | 
            
                +0.10 / +2.44%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                102,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2017
             | 
            
                +0.10 / +2.50%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.10
             | 
            
                3.95
             |                     
            
                4.10
             |                                 
            
                50,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2017
             | 
            
                -0.10 / -2.44%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.01
             |                     
            
                4.00
             |                                 
            
                29,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.08
             |                     
            
                4.10
             |                                 
            
                8,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2017
             | 
            
                -0.10 / -2.38%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.03
             |                     
            
                4.10
             |                                 
            
                8,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2017
             | 
            
                +0.20 / +5.00%
             |             
            
                4.00
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.02
             |                     
            
                4.20
             |                                 
            
                11,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2017
             | 
            
                -0.10 / -2.44%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.01
             |                     
            
                4.00
             |                                 
            
                79,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2017
             | 
            
                -0.10 / -2.38%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.05
             |                     
            
                4.10
             |                                 
            
                99,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.11
             |                     
            
                4.20
             |                                 
            
                113,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2017
             | 
            
                -0.10 / -2.33%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.20
             |                                 
            
                73,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2017
             | 
            
                +0.10 / +2.38%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.23
             |                     
            
                4.30
             |                                 
            
                41,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2017
             | 
            
                -0.20 / -4.55%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.30
             |                     
            
                4.20
             |                                 
            
                8,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.30
             |                     
            
                4.40
             |                                 
            
                12,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2017
             | 
            
                +0.20 / +4.76%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.30
             |                     
            
                4.40
             |                                 
            
                24,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2017
             | 
            
                -0.20 / -4.55%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.30
             |                     
            
                4.20
             |                                 
            
                25,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/17/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.37
             |                     
            
                4.40
             |                                 
            
                3,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/16/2017
             | 
            
                +0.10 / +2.33%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.34
             |                     
            
                4.40
             |                                 
            
                6,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2017
             | 
            
                -0.10 / -2.27%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                4.30
             |                                 
            
                27,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.31
             |                     
            
                4.40
             |                                 
            
                11,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/11/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.30
             |                     
            
                4.40
             |                                 
            
                25,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/10/2017
             | 
            
                -0.10 / -2.22%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.40
             | 
            
                4.32
             |                     
            
                4.40
             |                                 
            
                22,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |