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                    Closing price on 6/20/2011
                 |  |  
    
        |           
                
                    | Open | 21.10 |  
                    | High | 21.50 |  
                    | Low | 21.10 |  
                    | Volume | 5,620 |  
                    | Split-adjusted Price | 2.94 |  
                
             | 
 |  MPC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/20/2011 | 0.00 / 0.00% | 21.10 | 21.50 | 21.10 | 21.50 | 21.50 | 2.94 | 5,620 |   |  
            | 6/17/2011 | -0.20 / -0.92% | 21.70 | 21.70 | 21.40 | 21.50 | 21.50 | 2.94 | 7,000 |   |  			
            | 6/16/2011 | -0.40 / -1.81% | 21.30 | 22.00 | 21.20 | 21.70 | 21.70 | 2.97 | 10,310 |   |  
            | 6/15/2011 | -1.10 / -4.74% | 22.30 | 22.30 | 22.10 | 22.10 | 22.10 | 3.02 | 6,110 |   |  			
            | 6/14/2011 | -0.60 / -2.52% | 23.80 | 23.80 | 23.20 | 23.20 | 23.20 | 3.17 | 211,232 |   |  
            | 6/13/2011 | 0.00 / 0.00% | 23.80 | 24.10 | 23.70 | 23.80 | 23.80 | 3.26 | 232,230 |   |  			
            | 6/10/2011 | +0.30 / +1.28% | 23.50 | 23.80 | 23.50 | 23.80 | 23.80 | 3.26 | 202,590 |   |  
            | 6/9/2011 | +1.10 / +4.91% | 22.50 | 23.50 | 22.00 | 23.50 | 23.50 | 3.22 | 259,560 |   |  			
            | 6/8/2011 | +1.00 / +4.67% | 22.40 | 22.40 | 21.50 | 22.40 | 22.40 | 3.06 | 271,220 |   |  
            | 6/7/2011 | +1.00 / +4.90% | 21.00 | 21.40 | 20.60 | 21.40 | 21.40 | 2.93 | 90,920 |   |  			
            | 6/6/2011 | 0.00 / 0.00% | 20.50 | 20.70 | 20.40 | 20.40 | 20.40 | 2.79 | 10,150 |   |  
            | 6/3/2011 | +0.90 / +4.62% | 20.40 | 20.40 | 19.60 | 20.40 | 20.40 | 2.79 | 18,190 |   |  			
            | 6/2/2011 | +0.90 / +4.84% | 19.40 | 19.50 | 19.40 | 19.50 | 19.50 | 2.67 | 4,620 |   |  
            | 6/1/2011 | +0.80 / +4.49% | 18.50 | 18.60 | 18.10 | 18.60 | 18.60 | 2.54 | 17,110 |   |  			
            | 5/31/2011 | -0.20 / -1.11% | 17.60 | 17.80 | 17.50 | 17.80 | 17.80 | 2.44 | 9,300 |   |  
            | 5/30/2011 | 0.00 / 0.00% | 18.50 | 18.50 | 17.90 | 18.00 | 18.00 | 2.46 | 21,320 |   |  			
            | 5/27/2011 | -0.50 / -2.70% | 19.30 | 19.30 | 18.00 | 18.00 | 18.00 | 2.46 | 7,550 |   |  
            | 5/26/2011 | +0.80 / +4.52% | 16.90 | 18.50 | 16.90 | 18.50 | 18.50 | 2.53 | 31,000 |   |  			
            | 5/25/2011 | -0.90 / -4.84% | 17.70 | 18.90 | 17.70 | 17.70 | 17.70 | 2.42 | 4,980 |   |  
            | 5/24/2011 | -0.90 / -4.62% | 19.00 | 19.30 | 18.60 | 18.60 | 18.60 | 2.54 | 78,360 |   |  			
            | 5/23/2011 | -0.20 / -1.02% | 20.30 | 20.60 | 19.40 | 19.50 | 19.50 | 2.67 | 21,920 |   |  
            | 5/20/2011 | -1.00 / -4.83% | 20.00 | 20.70 | 19.70 | 19.70 | 19.70 | 2.70 | 33,710 |   |  			
            | 5/19/2011 | -0.60 / -2.82% | 21.30 | 21.30 | 20.70 | 20.70 | 20.70 | 2.83 | 35,820 |   |  
            | 5/18/2011 | -0.20 / -0.93% | 21.50 | 21.50 | 21.30 | 21.30 | 21.30 | 2.91 | 17,000 |   |  			
            | 5/17/2011 | -0.70 / -3.15% | 22.20 | 22.30 | 21.30 | 21.50 | 21.50 | 2.94 | 96,760 |   |  
            | 5/16/2011 | -0.30 / -1.33% | 23.00 | 23.00 | 22.10 | 22.20 | 22.20 | 3.04 | 64,280 |   |  			
            | 5/13/2011 | 0.00 / 0.00% | 23.20 | 23.20 | 22.50 | 22.50 | 22.50 | 3.08 | 30,650 |   |  
            | 5/12/2011 | -0.30 / -1.32% | 23.00 | 23.00 | 22.50 | 22.50 | 22.50 | 3.08 | 52,700 |   |  			
            | 5/11/2011 | -0.50 / -2.15% | 23.40 | 23.40 | 22.60 | 22.80 | 22.80 | 3.12 | 30,170 |   |  
            | 5/10/2011 | -0.10 / -0.43% | 22.70 | 23.70 | 22.50 | 23.30 | 23.30 | 3.19 | 143,300 |   |  |