| 
                 
                    Closing price on 8/19/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.70 | 
                 
                
                    | High | 
                    4.80 | 
                 
                
                    | Low | 
                    4.40 | 
                     
                
                    | Volume | 
                    425,400 | 
                                 
                
                    | Split-adjusted Price | 
                    4.40 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
WSS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/19/2016
             | 
            
                -0.30 / -6.38%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.40
             |                           
            
                4.40
             | 
            
                4.70
             |                     
            
                4.40
             |                                 
            
                425,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2016
             | 
            
                -0.20 / -4.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.80
             |                     
            
                4.70
             |                                 
            
                2,511,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2016
             | 
            
                -0.30 / -5.77%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.97
             |                     
            
                4.90
             |                                 
            
                156,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2016
             | 
            
                +0.10 / +1.96%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.24
             |                     
            
                5.20
             |                                 
            
                31,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                4.96
             |                     
            
                5.10
             |                                 
            
                36,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2016
             | 
            
                -0.20 / -3.77%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.12
             |                     
            
                5.10
             |                                 
            
                26,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2016
             | 
            
                +0.10 / +1.92%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                4.70
             |                           
            
                5.30
             | 
            
                5.03
             |                     
            
                5.30
             |                                 
            
                43,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2016
             | 
            
                -0.20 / -3.70%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.21
             |                     
            
                5.20
             |                                 
            
                39,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2016
             | 
            
                +0.40 / +8.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.10
             |                           
            
                5.40
             | 
            
                5.11
             |                     
            
                5.40
             |                                 
            
                25,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2016
             | 
            
                -0.10 / -1.96%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.32
             |                     
            
                5.00
             |                                 
            
                48,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2016
             | 
            
                -0.40 / -7.27%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.46
             |                     
            
                5.10
             |                                 
            
                404,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.50
             | 
            
                5.37
             |                     
            
                5.50
             |                                 
            
                113,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.40
             |                     
            
                5.50
             |                                 
            
                101,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.42
             |                     
            
                5.50
             |                                 
            
                115,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.40
             |                     
            
                5.50
             |                                 
            
                118,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.40
             |                     
            
                5.50
             |                                 
            
                27,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.47
             |                     
            
                5.50
             |                                 
            
                46,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.47
             |                     
            
                5.50
             |                                 
            
                40,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.47
             |                     
            
                5.50
             |                                 
            
                38,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                5.50
             |                                 
            
                70,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                5.50
             |                                 
            
                34,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2016
             | 
            
                -0.10 / -1.79%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.49
             |                     
            
                5.50
             |                                 
            
                65,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.55
             |                     
            
                5.60
             |                                 
            
                25,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.62
             |                     
            
                5.60
             |                                 
            
                227,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2016
             | 
            
                -0.10 / -1.75%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.62
             |                     
            
                5.60
             |                                 
            
                58,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.60
             |                     
            
                5.70
             |                                 
            
                62,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.61
             |                     
            
                5.70
             |                                 
            
                233,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2016
             | 
            
                0.00 / 0.00%
             |             
            
                5.70
             |           
            
                5.80
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.70
             |                     
            
                5.70
             |                                 
            
                122,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2016
             | 
            
                +0.10 / +1.79%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.60
             |                           
            
                5.70
             | 
            
                5.61
             |                     
            
                5.70
             |                                 
            
                74,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2016
             | 
            
                -0.10 / -1.75%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.67
             |                     
            
                5.60
             |                                 
            
                54,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |