| 
                 
                    Closing price on 11/11/2011
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    10.30 | 
                 
                
                    | High | 
                    10.30 | 
                 
                
                    | Low | 
                    9.90 | 
                     
                
                    | Volume | 
                    139,070 | 
                                 
                
                    | Split-adjusted Price | 
                    4.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PXS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/11/2011
             | 
            
                -0.10 / -0.98%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                9.90
             |                           
            
                10.10
             | 
            
                10.10
             |                     
            
                4.80
             |                                 
            
                139,070
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2011
             | 
            
                -0.10 / -0.97%
             |             
            
                10.30
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                80,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                45,460
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                69,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.30
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                241,950
             |            
            
                 
             |                                       
         
    
        
            | 
                11/4/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                89,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/3/2011
             | 
            
                -0.10 / -0.96%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.30
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                104,760
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                4.94
             |                                 
            
                50,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/1/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.40
             |           
            
                10.60
             |               
            
                10.30
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                4.94
             |                                 
            
                143,810
             |            
            
                 
             |                                       
         
    
        
            | 
                10/31/2011
             | 
            
                -0.40 / -3.70%
             |             
            
                11.10
             |           
            
                11.20
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                4.94
             |                                 
            
                206,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/28/2011
             | 
            
                +0.50 / +4.85%
             |             
            
                10.50
             |           
            
                10.80
             |               
            
                10.50
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                5.13
             |                                 
            
                244,720
             |            
            
                 
             |                                       
         
    
        
            | 
                10/27/2011
             | 
            
                +0.10 / +0.98%
             |             
            
                10.30
             |           
            
                10.40
             |               
            
                10.20
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                24,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/26/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                162,130
             |            
            
                 
             |                                       
         
    
        
            | 
                10/25/2011
             | 
            
                -0.30 / -2.86%
             |             
            
                10.40
             |           
            
                10.60
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                187,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/24/2011
             | 
            
                -0.20 / -1.87%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.50
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                4.99
             |                                 
            
                103,420
             |            
            
                 
             |                                       
         
    
        
            | 
                10/21/2011
             | 
            
                +0.50 / +4.90%
             |             
            
                10.20
             |           
            
                10.70
             |               
            
                10.20
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                5.08
             |                                 
            
                261,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/20/2011
             | 
            
                0.00 / 0.00%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                49,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/19/2011
             | 
            
                +0.20 / +2.00%
             |             
            
                10.00
             |           
            
                10.20
             |               
            
                10.00
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                29,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/18/2011
             | 
            
                -0.20 / -1.96%
             |             
            
                10.00
             |           
            
                10.20
             |               
            
                10.00
             |                           
            
                10.00
             | 
            
                10.00
             |                     
            
                4.75
             |                                 
            
                113,250
             |            
            
                 
             |                                       
         
    
        
            | 
                10/17/2011
             | 
            
                -0.20 / -1.92%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                89,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2011
             | 
            
                +0.10 / +0.97%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.30
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                4.94
             |                                 
            
                68,930
             |            
            
                 
             |                                       
         
    
        
            | 
                10/13/2011
             | 
            
                +0.10 / +0.98%
             |             
            
                10.20
             |           
            
                10.30
             |               
            
                10.00
             |                           
            
                10.30
             | 
            
                10.30
             |                     
            
                4.89
             |                                 
            
                249,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/12/2011
             | 
            
                -0.40 / -3.77%
             |             
            
                10.50
             |           
            
                10.50
             |               
            
                10.10
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                4.84
             |                                 
            
                344,680
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2011
             | 
            
                +0.10 / +0.95%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.60
             |                           
            
                10.60
             | 
            
                10.60
             |                     
            
                5.03
             |                                 
            
                67,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2011
             | 
            
                -0.30 / -2.78%
             |             
            
                10.80
             |           
            
                10.90
             |               
            
                10.40
             |                           
            
                10.50
             | 
            
                10.50
             |                     
            
                4.99
             |                                 
            
                107,480
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2011
             | 
            
                -0.40 / -3.57%
             |             
            
                11.30
             |           
            
                11.30
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                5.13
             |                                 
            
                79,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2011
             | 
            
                +0.50 / +4.67%
             |             
            
                10.90
             |           
            
                11.20
             |               
            
                10.70
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                5.32
             |                                 
            
                173,340
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2011
             | 
            
                +0.30 / +2.88%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.50
             |                           
            
                10.70
             | 
            
                10.70
             |                     
            
                5.08
             |                                 
            
                100,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2011
             | 
            
                -0.50 / -4.59%
             |             
            
                10.50
             |           
            
                10.70
             |               
            
                10.40
             |                           
            
                10.40
             | 
            
                10.40
             |                     
            
                4.94
             |                                 
            
                365,310
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2011
             | 
            
                -0.50 / -4.39%
             |             
            
                11.10
             |           
            
                11.40
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                5.18
             |                                 
            
                201,210
             |  
            
                 
             |                                                              
             
    
         
    
    
 |