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            | 
                    Closing price on 3/8/2012
                 |  |  
    
        |           
                
                    | Open | 9.20 |  
                    | High | 9.50 |  
                    | Low | 9.10 |  
                    | Volume | 185,080 |  
                    | Split-adjusted Price | 4.55 |  
                
             | 
 |  PXS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/8/2012 | -0.40 / -4.21% | 9.20 | 9.50 | 9.10 | 9.10 | 9.10 | 4.55 | 185,080 |   |  
            | 3/7/2012 | -0.10 / -1.04% | 9.60 | 9.60 | 9.30 | 9.50 | 9.50 | 4.75 | 133,420 |   |  			
            | 3/6/2012 | -0.10 / -1.03% | 10.10 | 10.10 | 9.30 | 9.60 | 9.60 | 4.80 | 390,000 |   |  
            | 3/5/2012 | +0.40 / +4.30% | 9.60 | 9.70 | 9.60 | 9.70 | 9.70 | 4.85 | 142,510 |   |  			
            | 3/2/2012 | +0.20 / +2.20% | 9.10 | 9.30 | 9.10 | 9.30 | 9.30 | 4.65 | 216,770 |   |  
            | 3/1/2012 | +0.10 / +1.11% | 9.00 | 9.10 | 8.90 | 9.10 | 9.10 | 4.55 | 105,520 |   |  			
            | 2/29/2012 | +0.10 / +1.12% | 8.90 | 9.20 | 8.90 | 9.00 | 9.00 | 4.50 | 92,440 |   |  
            | 2/28/2012 | -0.40 / -4.30% | 9.40 | 9.40 | 8.90 | 8.90 | 8.90 | 4.45 | 264,330 |   |  			
            | 2/27/2012 | +0.40 / +4.49% | 8.90 | 9.30 | 8.90 | 9.30 | 9.30 | 4.65 | 181,390 |   |  
            | 2/24/2012 | -0.20 / -2.20% | 9.10 | 9.30 | 8.90 | 8.90 | 8.90 | 4.45 | 227,950 |   |  			
            | 2/23/2012 | +0.20 / +2.25% | 8.90 | 9.10 | 8.70 | 9.10 | 9.10 | 4.55 | 298,390 |   |  
            | 2/22/2012 | +0.40 / +4.71% | 8.50 | 8.90 | 8.50 | 8.90 | 8.90 | 4.45 | 140,950 |   |  			
            | 2/21/2012 | -0.20 / -2.30% | 8.90 | 9.00 | 8.50 | 8.50 | 8.50 | 4.25 | 116,000 |   |  
            | 2/20/2012 | +0.40 / +4.82% | 8.50 | 8.70 | 8.50 | 8.70 | 8.70 | 4.35 | 130,760 |   |  			
            | 2/17/2012 | +0.30 / +3.75% | 8.20 | 8.30 | 8.00 | 8.30 | 8.30 | 4.15 | 38,100 |   |  
            | 2/16/2012 | -0.10 / -1.23% | 8.10 | 8.20 | 8.00 | 8.00 | 8.00 | 4.00 | 70,450 |   |  			
            | 2/15/2012 | 0.00 / 0.00% | 8.10 | 8.10 | 7.80 | 8.10 | 8.10 | 4.05 | 94,130 |   |  
            | 2/14/2012 | +0.30 / +3.85% | 7.80 | 8.10 | 7.80 | 8.10 | 8.10 | 4.05 | 98,530 |   |  			
            | 2/13/2012 | -0.30 / -3.70% | 7.90 | 8.00 | 7.80 | 7.80 | 7.80 | 3.90 | 108,310 |   |  
            | 2/10/2012 | -0.30 / -3.57% | 8.60 | 8.60 | 8.00 | 8.10 | 8.10 | 4.05 | 240,740 |   |  			
            | 2/9/2012 | -0.30 / -3.45% | 8.50 | 8.70 | 8.40 | 8.40 | 8.40 | 4.20 | 148,970 |   |  
            | 2/8/2012 | +0.30 / +3.57% | 8.50 | 8.70 | 8.40 | 8.70 | 8.70 | 4.35 | 150,650 |   |  			
            | 2/7/2012 | +0.20 / +2.44% | 8.30 | 8.40 | 8.20 | 8.40 | 8.40 | 4.20 | 65,960 |   |  
            | 2/6/2012 | -0.10 / -1.20% | 8.30 | 8.30 | 8.00 | 8.20 | 8.20 | 4.10 | 122,190 |   |  			
            | 2/3/2012 | -0.10 / -1.19% | 8.70 | 8.80 | 8.20 | 8.30 | 8.30 | 4.15 | 223,070 |   |  
            | 2/2/2012 | +0.40 / +5.00% | 8.20 | 8.40 | 8.20 | 8.40 | 8.40 | 4.20 | 90,490 |   |  			
            | 2/1/2012 | -0.10 / -1.23% | 8.10 | 8.20 | 7.90 | 8.00 | 8.00 | 4.00 | 87,440 |   |  
            | 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 |   |  |