| 
                 
                    Closing price on 1/17/2013
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.40 | 
                 
                
                    | High | 
                    3.40 | 
                 
                
                    | Low | 
                    3.30 | 
                     
                
                    | Volume | 
                    20,200 | 
                                 
                
                    | Split-adjusted Price | 
                    3.40 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PSB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/17/2013
             | 
            
                +0.10 / +3.03%
             |             
            
                3.40
             |           
            
                3.40
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.40
             |                     
            
                3.40
             |                                 
            
                20,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2013
             | 
            
                -0.10 / -2.94%
             |             
            
                3.30
             |           
            
                3.40
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.30
             |                     
            
                3.30
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2013
             | 
            
                +0.10 / +3.03%
             |             
            
                3.40
             |           
            
                3.40
             |               
            
                3.20
             |                           
            
                3.40
             | 
            
                3.30
             |                     
            
                3.40
             |                                 
            
                9,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.40
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.40
             |                     
            
                3.30
             |                                 
            
                4,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.30
             |           
            
                3.40
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.30
             |                     
            
                3.30
             |                                 
            
                7,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2013
             | 
            
                +0.10 / +3.13%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.20
             |                           
            
                3.30
             | 
            
                3.30
             |                     
            
                3.30
             |                                 
            
                29,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.20
             |                           
            
                3.20
             | 
            
                3.20
             |                     
            
                3.20
             |                                 
            
                36,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.20
             |           
            
                3.20
             |               
            
                3.20
             |                           
            
                3.20
             | 
            
                3.20
             |                     
            
                3.20
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2013
             | 
            
                +0.10 / +3.23%
             |             
            
                3.10
             |           
            
                3.20
             |               
            
                3.10
             |                           
            
                3.20
             | 
            
                3.20
             |                     
            
                3.20
             |                                 
            
                40,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2013
             | 
            
                -0.20 / -6.06%
             |             
            
                3.10
             |           
            
                3.10
             |               
            
                3.00
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                15,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2013
             | 
            
                0.00 / 0.00%
             |             
            
                3.30
             |           
            
                3.30
             |               
            
                3.00
             |                           
            
                3.30
             | 
            
                3.10
             |                     
            
                3.30
             |                                 
            
                12,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/2/2013
             | 
            
                +0.30 / +10.00%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.30
             | 
            
                3.30
             |                     
            
                3.30
             |                                 
            
                20,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.00
             |                     
            
                3.00
             |                                 
            
                13,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2012
             | 
            
                +0.10 / +3.45%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                3.00
             | 
            
                2.90
             |                     
            
                3.00
             |                                 
            
                10,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                6,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/24/2012
             | 
            
                +0.10 / +3.57%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                3,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2012
             | 
            
                -0.10 / -3.45%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2012
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                6,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/17/2012
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2012
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.80
             |                     
            
                2.90
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                20,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.60
             |                           
            
                2.80
             | 
            
                2.70
             |                     
            
                2.80
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2012
             | 
            
                +0.20 / +7.69%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2012
             | 
            
                -0.10 / -3.70%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.60
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                3,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2012
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.80
             |                     
            
                2.70
             |                                 
            
                5,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2012
             | 
            
                +0.10 / +3.70%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.70
             |                     
            
                2.70
             |                                 
            
                18,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |