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            | 
                    Closing price on 2/21/2011
                 |  |  
    
        |           
                
                    | Open | 25.60 |  
                    | High | 25.60 |  
                    | Low | 25.40 |  
                    | Volume | 22,030 |  
                    | Split-adjusted Price | 3.48 |  
                
             | 
 |  MPC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/21/2011 | -1.30 / -4.87% | 25.60 | 25.60 | 25.40 | 25.40 | 25.40 | 3.48 | 22,030 |   |  
            | 2/18/2011 | -0.90 / -3.26% | 27.60 | 27.60 | 26.70 | 26.70 | 26.70 | 3.65 | 8,850 |   |  			
            | 2/17/2011 | -0.60 / -2.13% | 27.10 | 28.00 | 27.10 | 27.60 | 27.60 | 3.78 | 1,600 |   |  
            | 2/16/2011 | -0.10 / -0.35% | 28.20 | 28.20 | 28.00 | 28.20 | 28.20 | 3.86 | 7,020 |   |  			
            | 2/15/2011 | -0.10 / -0.35% | 28.30 | 28.30 | 28.10 | 28.30 | 28.30 | 3.87 | 2,010 |   |  
            | 2/14/2011 | 0.00 / 0.00% | 28.40 | 28.60 | 28.40 | 28.40 | 28.40 | 3.89 | 7,730 |   |  			
            | 2/11/2011 | +0.40 / +1.43% | 28.00 | 28.50 | 28.00 | 28.40 | 28.40 | 3.89 | 9,210 |   |  
            | 2/10/2011 | -0.50 / -1.75% | 28.50 | 28.50 | 28.00 | 28.00 | 28.00 | 3.83 | 6,580 |   |  			
            | 2/9/2011 | +0.30 / +1.06% | 27.80 | 28.50 | 27.80 | 28.50 | 28.50 | 3.90 | 2,880 |   |  
            | 2/8/2011 | +0.10 / +0.36% | 27.00 | 28.20 | 27.00 | 28.20 | 28.20 | 3.86 | 3,890 |   |  			
            | 1/28/2011 | +0.50 / +1.81% | 27.60 | 28.10 | 27.60 | 28.10 | 28.10 | 3.84 | 8,860 |   |  
            | 1/27/2011 | +0.60 / +2.22% | 27.00 | 27.60 | 27.00 | 27.60 | 27.60 | 3.78 | 1,810 |   |  			
            | 1/26/2011 | 0.00 / 0.00% | 27.00 | 27.10 | 27.00 | 27.00 | 27.00 | 3.69 | 3,080 |   |  
            | 1/25/2011 | -0.10 / -0.37% | 27.10 | 27.70 | 27.00 | 27.00 | 27.00 | 3.69 | 3,720 |   |  			
            | 1/24/2011 | -0.80 / -2.87% | 27.30 | 27.90 | 27.10 | 27.10 | 27.10 | 3.71 | 14,440 |   |  
            | 1/21/2011 | +0.40 / +1.45% | 27.70 | 28.00 | 27.50 | 27.90 | 27.90 | 3.82 | 18,120 |   |  			
            | 1/20/2011 | +0.10 / +0.36% | 27.40 | 27.70 | 27.40 | 27.50 | 27.50 | 3.76 | 14,790 |   |  
            | 1/19/2011 | -0.60 / -2.14% | 27.00 | 29.20 | 27.00 | 27.40 | 27.40 | 3.75 | 11,040 |   |  			
            | 1/18/2011 | 0.00 / 0.00% | 28.00 | 28.00 | 28.00 | 28.00 | 28.00 | 3.83 | 23,490 |   |  
            | 1/17/2011 | -0.20 / -0.71% | 29.30 | 29.30 | 28.00 | 28.00 | 28.00 | 3.83 | 1,560 |   |  			
            | 1/14/2011 | +0.70 / +2.55% | 28.50 | 28.50 | 27.60 | 28.20 | 28.20 | 3.86 | 1,210 |   |  
            | 1/13/2011 | +1.00 / +3.77% | 27.70 | 27.80 | 27.50 | 27.50 | 27.50 | 3.76 | 8,580 |   |  			
            | 1/12/2011 | -0.90 / -3.28% | 26.40 | 27.90 | 26.40 | 26.50 | 26.50 | 3.63 | 27,550 |   |  
            | 1/11/2011 | -0.40 / -1.44% | 28.00 | 28.00 | 27.10 | 27.40 | 27.40 | 3.75 | 5,510 |   |  			
            | 1/10/2011 | -0.80 / -2.80% | 28.00 | 28.40 | 27.80 | 27.80 | 27.80 | 3.80 | 2,660 |   |  
            | 1/7/2011 | 0.00 / 0.00% | 28.60 | 28.80 | 28.50 | 28.60 | 28.60 | 3.91 | 5,830 |   |  			
            | 1/6/2011 | -0.40 / -1.38% | 28.50 | 28.70 | 28.50 | 28.60 | 28.60 | 3.91 | 29,730 |   |  
            | 1/5/2011 | -0.90 / -3.01% | 29.00 | 29.80 | 29.00 | 29.00 | 29.00 | 3.97 | 4,150 |   |  			
            | 1/4/2011 | 0.00 / 0.00% | 29.90 | 29.90 | 29.80 | 29.90 | 29.90 | 4.09 | 16,370 |   |  
            | 12/31/2010 | +0.40 / +1.36% | 30.20 | 30.20 | 29.10 | 29.90 | 29.90 | 4.09 | 27,300 |   |  |