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                    Closing price on 5/10/2012
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        |           
                
                    | Open | 13.50 |  
                    | High | 13.50 |  
                    | Low | 12.70 |  
                    | Volume | 1,090,870 |  
                    | Split-adjusted Price | 6.68 |  
                
             | 
 |  PXS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/10/2012 | -0.10 / -0.76% | 13.50 | 13.50 | 12.70 | 13.00 | 13.00 | 6.68 | 1,090,870 |   |  
            | 5/9/2012 | -0.50 / -3.68% | 13.30 | 13.60 | 13.10 | 13.10 | 13.10 | 6.73 | 775,730 |   |  			
            | 5/8/2012 | +0.60 / +4.62% | 13.60 | 13.60 | 13.10 | 13.60 | 13.60 | 6.98 | 1,286,080 |   |  
            | 5/7/2012 | +0.60 / +4.84% | 13.00 | 13.00 | 12.90 | 13.00 | 13.00 | 6.68 | 754,540 |   |  			
            | 5/4/2012 | +0.50 / +4.20% | 12.20 | 12.40 | 12.00 | 12.40 | 12.40 | 6.37 | 845,200 |   |  
            | 5/3/2012 | -0.30 / -2.46% | 12.00 | 12.30 | 11.60 | 11.90 | 11.90 | 6.11 | 598,120 |   |  			
            | 5/2/2012 | +0.40 / +3.39% | 11.80 | 12.30 | 11.80 | 12.20 | 12.20 | 6.27 | 1,604,910 |   |  
            | 4/27/2012 | +0.30 / +2.61% | 11.50 | 11.90 | 11.40 | 11.80 | 11.80 | 6.06 | 382,890 |   |  			
            | 4/26/2012 | -0.40 / -3.36% | 11.70 | 11.80 | 11.50 | 11.50 | 11.50 | 5.91 | 224,260 |   |  
            | 4/25/2012 | +0.20 / +1.71% | 11.70 | 11.90 | 11.50 | 11.90 | 11.90 | 6.11 | 338,890 |   |  			
            | 4/24/2012 | +0.40 / +3.54% | 11.40 | 11.80 | 11.00 | 11.70 | 11.70 | 5.85 | 602,490 |   |  
            | 4/23/2012 | 0.00 / 0.00% | 11.30 | 11.40 | 11.10 | 11.30 | 11.30 | 5.65 | 229,750 |   |  			
            | 4/20/2012 | +0.10 / +0.89% | 11.40 | 11.40 | 10.90 | 11.30 | 11.30 | 5.65 | 353,440 |   |  
            | 4/19/2012 | -0.50 / -4.27% | 11.70 | 11.80 | 11.20 | 11.20 | 11.20 | 5.60 | 656,830 |   |  			
            | 4/18/2012 | -0.40 / -3.31% | 12.00 | 12.10 | 11.70 | 11.70 | 11.70 | 5.85 | 640,700 |   |  
            | 4/17/2012 | -0.20 / -1.63% | 12.40 | 12.50 | 12.10 | 12.10 | 12.10 | 6.05 | 513,780 |   |  			
            | 4/16/2012 | +0.20 / +1.65% | 12.30 | 12.60 | 11.70 | 12.30 | 12.30 | 6.15 | 501,440 |   |  
            | 4/13/2012 | +0.40 / +3.42% | 11.70 | 12.20 | 11.40 | 12.10 | 12.10 | 6.05 | 1,004,220 |   |  			
            | 4/12/2012 | +0.50 / +4.46% | 11.60 | 11.70 | 11.50 | 11.70 | 11.70 | 5.85 | 697,060 |   |  
            | 4/11/2012 | +0.50 / +4.67% | 11.00 | 11.20 | 10.80 | 11.20 | 11.20 | 5.60 | 710,580 |   |  			
            | 4/10/2012 | 0.00 / 0.00% | 10.80 | 11.00 | 10.60 | 10.70 | 10.70 | 5.35 | 511,590 |   |  
            | 4/9/2012 | +0.50 / +4.90% | 10.30 | 10.70 | 10.30 | 10.70 | 10.70 | 5.35 | 450,230 |   |  			
            | 4/6/2012 | +0.20 / +2.00% | 10.10 | 10.40 | 10.00 | 10.20 | 10.20 | 5.10 | 267,530 |   |  
            | 4/5/2012 | +0.10 / +1.01% | 9.90 | 10.20 | 9.70 | 10.00 | 10.00 | 5.00 | 189,260 |   |  			
            | 4/4/2012 | 0.00 / 0.00% | 10.10 | 10.10 | 9.70 | 9.90 | 9.90 | 4.95 | 83,180 |   |  
            | 4/3/2012 | +0.40 / +4.21% | 9.50 | 9.90 | 9.50 | 9.90 | 9.90 | 4.95 | 138,620 |   |  			
            | 3/30/2012 | -0.30 / -3.06% | 10.00 | 10.00 | 9.50 | 9.50 | 9.50 | 4.75 | 163,970 |   |  
            | 3/29/2012 | -0.50 / -4.85% | 10.10 | 10.40 | 9.80 | 9.80 | 9.80 | 4.90 | 294,120 |   |  			
            | 3/28/2012 | -0.30 / -2.83% | 10.20 | 10.40 | 10.10 | 10.30 | 10.30 | 5.15 | 459,320 |   |  
            | 3/27/2012 | -0.50 / -4.50% | 10.90 | 10.90 | 10.60 | 10.60 | 10.60 | 5.30 | 237,260 |   |  |