| 
                 
                    Closing price on 2/27/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.40 | 
                 
                
                    | High | 
                    5.60 | 
                 
                
                    | Low | 
                    5.40 | 
                     
                
                    | Volume | 
                    787,200 | 
                                 
                
                    | Split-adjusted Price | 
                    5.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
WSS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/27/2015
             | 
            
                +0.20 / +3.77%
             |             
            
                5.40
             |           
            
                5.60
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.51
             |                     
            
                5.50
             |                                 
            
                787,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                98,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/25/2015
             | 
            
                -0.40 / -7.02%
             |             
            
                5.40
             |           
            
                5.70
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.47
             |                     
            
                5.30
             |                                 
            
                33,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/24/2015
             | 
            
                -0.10 / -1.72%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.40
             |                           
            
                5.70
             | 
            
                5.45
             |                     
            
                5.70
             |                                 
            
                105,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/13/2015
             | 
            
                +0.50 / +9.43%
             |             
            
                5.10
             |           
            
                5.80
             |               
            
                5.10
             |                           
            
                5.80
             | 
            
                5.20
             |                     
            
                5.80
             |                                 
            
                85,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                5,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2015
             | 
            
                +0.20 / +3.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.10
             |                     
            
                5.30
             |                                 
            
                54,300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/10/2015
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                5.20
             |               
            
                4.60
             |                           
            
                5.10
             | 
            
                5.04
             |                     
            
                5.10
             |                                 
            
                23,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2015
             | 
            
                -0.20 / -3.77%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.14
             |                     
            
                5.10
             |                                 
            
                27,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/6/2015
             | 
            
                +0.10 / +1.92%
             |             
            
                5.10
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.19
             |                     
            
                5.30
             |                                 
            
                322,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2015
             | 
            
                -0.10 / -1.89%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.25
             |                     
            
                5.20
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.20
             |                     
            
                5.30
             |                                 
            
                184,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2015
             | 
            
                -0.10 / -1.85%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.21
             |                     
            
                5.30
             |                                 
            
                35,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2015
             | 
            
                -0.10 / -1.82%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.40
             | 
            
                5.41
             |                     
            
                5.40
             |                                 
            
                151,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/30/2015
             | 
            
                -0.10 / -1.79%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.44
             |                     
            
                5.50
             |                                 
            
                40,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2015
             | 
            
                +0.20 / +3.70%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.44
             |                     
            
                5.60
             |                                 
            
                94,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2015
             | 
            
                +0.20 / +3.85%
             |             
            
                5.30
             |           
            
                5.70
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.50
             |                     
            
                5.40
             |                                 
            
                310,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                102,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                47,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/23/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.33
             |                     
            
                5.20
             |                                 
            
                186,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2015
             | 
            
                -0.10 / -1.89%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                8,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2015
             | 
            
                +0.20 / +3.92%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.31
             |                     
            
                5.30
             |                                 
            
                63,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2015
             | 
            
                -0.20 / -3.77%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.10
             |                     
            
                5.10
             |                                 
            
                79,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.20
             |                     
            
                5.30
             |                                 
            
                24,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2015
             | 
            
                +0.10 / +1.92%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.21
             |                     
            
                5.30
             |                                 
            
                208,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2015
             | 
            
                +0.10 / +1.96%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.20
             | 
            
                5.16
             |                     
            
                5.20
             |                                 
            
                45,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2015
             | 
            
                -0.10 / -1.92%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.18
             |                     
            
                5.10
             |                                 
            
                29,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2015
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                5.20
             |                                 
            
                79,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2015
             | 
            
                -0.20 / -3.70%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.30
             |                     
            
                5.20
             |                                 
            
                103,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2015
             | 
            
                +0.10 / +1.89%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.36
             |                     
            
                5.40
             |                                 
            
                105,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |