| 
                 
                    Closing price on 8/23/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.70 | 
                 
                
                    | High | 
                    2.70 | 
                 
                
                    | Low | 
                    2.70 | 
                     
                
                    | Volume | 
                    970 | 
                                 
                
                    | Split-adjusted Price | 
                    2.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PSB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/23/2013
             | 
            
                -0.20 / -6.90%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                970
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/19/2013
             | 
            
                +0.20 / +7.41%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                17,325
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2013
             | 
            
                -0.10 / -3.57%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2013
             | 
            
                +0.10 / +3.70%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.70
             |                     
            
                2.80
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2013
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.80
             |                     
            
                2.70
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2013
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                1,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2013
             | 
            
                +0.20 / +7.41%
             |             
            
                2.70
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.90
             | 
            
                2.70
             |                     
            
                2.90
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2013
             | 
            
                -0.20 / -6.90%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                30,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2013
             | 
            
                +0.20 / +7.14%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                3.00
             | 
            
                2.95
             |                     
            
                3.00
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2013
             | 
            
                -0.10 / -3.45%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                7,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2013
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                7,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2013
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                34,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2013
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                121,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2013
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |