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            | 
                    Closing price on 4/4/2012
                 |  |  
    
        |           
                
                    | Open | 10.10 |  
                    | High | 10.10 |  
                    | Low | 9.70 |  
                    | Volume | 83,180 |  
                    | Split-adjusted Price | 4.95 |  
                
             | 
 |  PXS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 3/12/2012 | -0.20 / -2.20% | 9.00 | 9.00 | 8.70 | 8.90 | 8.90 | 4.45 | 182,960 |   |  
            | 3/9/2012 | 0.00 / 0.00% | 9.10 | 9.20 | 8.70 | 9.10 | 9.10 | 4.55 | 167,400 |   |  			
            | 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 |   |  |