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            | 
                    Closing price on 4/24/2012
                 |  |  
    
        |           
                
                    | Open | 11.40 |  
                    | High | 11.80 |  
                    | Low | 11.00 |  
                    | Volume | 602,490 |  
                    | Split-adjusted Price | 5.85 |  
                
             | 
 |  PXS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 3/26/2012 | +0.30 / +2.78% | 11.10 | 11.20 | 10.60 | 11.10 | 11.10 | 5.55 | 251,970 |   |  
            | 3/23/2012 | +0.50 / +4.85% | 10.40 | 10.80 | 10.30 | 10.80 | 10.80 | 5.40 | 656,870 |   |  			
            | 3/22/2012 | +0.30 / +3.00% | 10.00 | 10.50 | 9.80 | 10.30 | 10.30 | 5.15 | 209,130 |   |  
            | 3/21/2012 | +0.40 / +4.17% | 9.70 | 10.00 | 9.60 | 10.00 | 10.00 | 5.00 | 537,640 |   |  			
            | 3/20/2012 | +0.30 / +3.23% | 9.30 | 9.60 | 9.30 | 9.60 | 9.60 | 4.80 | 69,990 |   |  
            | 3/19/2012 | -0.20 / -2.11% | 9.50 | 9.50 | 9.30 | 9.30 | 9.30 | 4.65 | 52,740 |   |  			
            | 3/16/2012 | +0.20 / +2.15% | 9.60 | 9.70 | 9.40 | 9.50 | 9.50 | 4.75 | 458,500 |   |  
            | 3/15/2012 | +0.40 / +4.49% | 9.00 | 9.30 | 8.80 | 9.30 | 9.30 | 4.65 | 108,030 |   |  			
            | 3/14/2012 | -0.20 / -2.20% | 9.10 | 9.10 | 8.90 | 8.90 | 8.90 | 4.45 | 71,770 |   |  
            | 3/13/2012 | +0.20 / +2.25% | 9.00 | 9.10 | 8.90 | 9.10 | 9.10 | 4.55 | 50,170 |   |  |