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            | 
                    Closing price on 1/31/2012
                 |  |  
    
        |           
                
                    | Open | 8.30 |  
                    | High | 8.40 |  
                    | Low | 8.10 |  
                    | Volume | 189,640 |  
                    | Split-adjusted Price | 4.05 |  
                
             | 
 |  PXS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/31/2012 | -0.10 / -1.22% | 8.30 | 8.40 | 8.10 | 8.10 | 8.10 | 4.05 | 189,640 |   |  
            | 1/30/2012 | +0.20 / +2.50% | 8.00 | 8.30 | 7.80 | 8.20 | 8.20 | 4.10 | 70,650 |   |  			
            | 1/20/2012 | +0.10 / +1.27% | 7.90 | 8.10 | 7.80 | 8.00 | 8.00 | 4.00 | 71,020 |   |  
            | 1/19/2012 | +0.30 / +3.95% | 7.60 | 7.90 | 7.60 | 7.90 | 7.90 | 3.95 | 86,830 |   |  			
            | 1/18/2012 | +0.10 / +1.33% | 7.50 | 7.60 | 7.50 | 7.60 | 7.60 | 3.80 | 31,890 |   |  
            | 1/17/2012 | -0.10 / -1.32% | 7.80 | 7.80 | 7.50 | 7.50 | 7.50 | 3.75 | 86,110 |   |  			
            | 1/16/2012 | +0.30 / +4.11% | 7.40 | 7.60 | 7.30 | 7.60 | 7.60 | 3.80 | 134,270 |   |  
            | 1/13/2012 | +0.10 / +1.39% | 7.30 | 7.40 | 7.20 | 7.30 | 7.30 | 3.65 | 57,090 |   |  			
            | 1/12/2012 | -0.30 / -4.00% | 7.50 | 7.50 | 7.20 | 7.20 | 7.20 | 3.60 | 66,670 |   |  
            | 1/11/2012 | +0.20 / +2.74% | 7.50 | 7.60 | 7.30 | 7.50 | 7.50 | 3.75 | 207,630 |   |  			
            | 1/10/2012 | +0.20 / +2.82% | 7.10 | 7.40 | 7.10 | 7.30 | 7.30 | 3.65 | 50,760 |   |  
            | 1/9/2012 | +0.10 / +1.43% | 7.00 | 7.20 | 6.80 | 7.10 | 7.10 | 3.55 | 66,380 |   |  			
            | 1/6/2012 | -0.30 / -4.11% | 7.30 | 7.30 | 7.00 | 7.00 | 7.00 | 3.50 | 134,020 |   |  
            | 1/5/2012 | +0.20 / +2.82% | 7.00 | 7.30 | 6.90 | 7.30 | 7.30 | 3.65 | 157,950 |   |  			
            | 1/4/2012 | -0.20 / -2.74% | 7.10 | 7.30 | 7.10 | 7.10 | 7.10 | 3.55 | 118,100 |   |  
            | 1/3/2012 | +0.20 / +2.82% | 7.10 | 7.40 | 7.10 | 7.30 | 7.30 | 3.65 | 73,730 |   |  			
            | 12/30/2011 | +0.30 / +4.41% | 6.90 | 7.10 | 6.60 | 7.10 | 7.10 | 3.55 | 89,710 |   |  
            | 12/29/2011 | +0.10 / +1.49% | 6.70 | 7.00 | 6.60 | 6.80 | 6.80 | 3.40 | 74,710 |   |  			
            | 12/28/2011 | -0.20 / -2.90% | 7.00 | 7.00 | 6.60 | 6.70 | 6.70 | 3.35 | 976,170 |   |  
            | 12/27/2011 | -0.30 / -4.17% | 7.10 | 7.40 | 6.90 | 6.90 | 6.90 | 3.45 | 158,400 |   |  			
            | 12/26/2011 | -0.30 / -4.00% | 7.40 | 7.40 | 7.20 | 7.20 | 7.20 | 3.60 | 146,400 |   |  
            | 12/23/2011 | -0.30 / -3.85% | 7.60 | 7.90 | 7.50 | 7.50 | 7.50 | 3.75 | 109,450 |   |  			
            | 12/22/2011 | -0.20 / -2.50% | 7.90 | 8.20 | 7.80 | 7.80 | 7.80 | 3.90 | 42,120 |   |  
            | 12/21/2011 | -0.20 / -2.44% | 8.40 | 8.40 | 8.00 | 8.00 | 8.00 | 4.00 | 34,320 |   |  			
            | 12/20/2011 | -0.30 / -3.53% | 8.30 | 8.50 | 8.20 | 8.20 | 8.20 | 4.10 | 25,960 |   |  
            | 12/19/2011 | 0.00 / 0.00% | 8.70 | 8.70 | 8.40 | 8.50 | 8.50 | 4.25 | 11,680 |   |  			
            | 12/16/2011 | +0.20 / +2.41% | 8.30 | 8.70 | 8.30 | 8.50 | 8.50 | 4.25 | 52,630 |   |  
            | 12/15/2011 | -0.20 / -2.35% | 8.30 | 8.40 | 8.10 | 8.30 | 8.30 | 4.15 | 98,240 |   |  			
            | 12/14/2011 | -0.30 / -3.41% | 8.80 | 8.80 | 8.40 | 8.50 | 8.50 | 4.25 | 63,380 |   |  
            | 12/13/2011 | -0.20 / -2.22% | 9.00 | 9.00 | 8.70 | 8.80 | 8.80 | 4.40 | 57,580 |   |  |