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            | 
                    Closing price on 11/21/2017
                 |  |  
    
        |           
                
                    | Open | 90.50 |  
                    | High | 90.50 |  
                    | Low | 89.20 |  
                    | Volume | 8,140 |  
                    | Split-adjusted Price | 79.59 |  
                
             | 
 |  MAS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/21/2017 | +0.30 / +0.34% | 90.50 | 90.50 | 89.20 | 89.50 | 89.43 | 79.59 | 8,140 |   |  
            | 11/20/2017 | 0.00 / 0.00% | 89.60 | 89.60 | 89.20 | 89.20 | 89.45 | 79.32 | 12,133 |   |  			
            | 11/17/2017 | -0.40 / -0.45% | 89.60 | 90.00 | 89.20 | 89.20 | 89.60 | 79.32 | 23,749 |   |  
            | 11/16/2017 | 0.00 / 0.00% | 89.50 | 89.60 | 89.00 | 89.60 | 89.46 | 79.67 | 21,425 |   |  			
            | 11/15/2017 | -0.30 / -0.33% | 89.50 | 90.00 | 89.40 | 89.60 | 89.81 | 79.67 | 23,200 |   |  
            | 11/14/2017 | +0.40 / +0.45% | 89.50 | 89.90 | 89.50 | 89.90 | 89.83 | 79.94 | 15,956 |   |  			
            | 11/13/2017 | 0.00 / 0.00% | 89.50 | 90.00 | 89.50 | 89.50 | 89.69 | 79.59 | 11,060 |   |  
            | 11/10/2017 | 0.00 / 0.00% | 89.50 | 90.00 | 89.50 | 89.50 | 89.51 | 79.59 | 31,403 |   |  			
            | 11/9/2017 | -0.10 / -0.11% | 89.50 | 89.60 | 89.10 | 89.50 | 89.44 | 79.59 | 2,110 |   |  
            | 11/8/2017 | -0.40 / -0.44% | 89.60 | 89.60 | 89.00 | 89.60 | 89.52 | 79.67 | 940 |   |  			
            | 11/7/2017 | +0.40 / +0.45% | 91.70 | 91.70 | 89.50 | 90.00 | 89.67 | 80.03 | 9,500 |   |  
            | 11/6/2017 | +0.20 / +0.22% | 89.00 | 89.90 | 89.00 | 89.60 | 89.48 | 79.67 | 12,300 |   |  			
            | 11/3/2017 | +0.40 / +0.45% | 89.00 | 90.00 | 87.20 | 89.40 | 89.25 | 79.50 | 28,400 |   |  
            | 11/2/2017 | -0.20 / -0.22% | 91.90 | 91.90 | 89.00 | 89.00 | 90.08 | 79.14 | 3,430 |   |  			
            | 11/1/2017 | -1.20 / -1.33% | 86.20 | 90.90 | 86.20 | 89.20 | 89.54 | 79.32 | 7,043 |   |  
            | 10/31/2017 | +0.70 / +0.78% | 90.80 | 90.80 | 90.40 | 90.40 | 90.51 | 80.39 | 2,412 |   |  			
            | 10/30/2017 | -1.20 / -1.32% | 90.90 | 90.90 | 89.00 | 89.70 | 89.97 | 79.76 | 17,160 |   |  
            | 10/27/2017 | -0.10 / -0.11% | 90.00 | 90.90 | 90.00 | 90.90 | 90.06 | 80.83 | 2,234 |   |  			
            | 10/26/2017 | -0.80 / -0.87% | 90.60 | 91.00 | 90.50 | 91.00 | 90.74 | 80.92 | 2,810 |   |  
            | 10/25/2017 | +1.30 / +1.44% | 92.00 | 92.00 | 90.00 | 91.80 | 90.47 | 81.63 | 12,075 |   |  			
            | 10/24/2017 | -0.50 / -0.55% | 90.10 | 92.90 | 86.20 | 90.50 | 91.01 | 80.47 | 27,595 |   |  
            | 10/23/2017 | -0.80 / -0.87% | 91.00 | 91.60 | 90.00 | 91.00 | 90.30 | 80.92 | 5,470 |   |  			
            | 10/20/2017 | -0.20 / -0.22% | 92.50 | 94.00 | 91.80 | 91.80 | 92.48 | 81.63 | 6,330 |   |  
            | 10/19/2017 | +0.70 / +0.77% | 92.00 | 92.50 | 90.30 | 92.00 | 91.85 | 81.81 | 8,210 |   |  			
            | 10/18/2017 | -1.10 / -1.19% | 92.40 | 92.40 | 91.20 | 91.30 | 92.04 | 81.19 | 4,125 |   |  
            | 10/17/2017 | -0.10 / -0.11% | 92.50 | 92.90 | 92.00 | 92.40 | 92.31 | 82.16 | 11,900 |   |  			
            | 10/16/2017 | +1.20 / +1.31% | 93.80 | 95.00 | 91.10 | 92.50 | 92.65 | 82.25 | 7,578 |   |  
            | 10/13/2017 | -0.60 / -0.65% | 91.90 | 91.90 | 91.30 | 91.30 | 91.79 | 81.19 | 1,819 |   |  			
            | 10/12/2017 | -1.10 / -1.18% | 92.50 | 92.50 | 90.60 | 91.90 | 91.00 | 81.72 | 13,700 |   |  
            | 10/11/2017 | -1.10 / -1.17% | 94.50 | 94.50 | 92.50 | 93.00 | 92.99 | 82.70 | 7,810 |   |  |