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            | 
                    Closing price on 10/17/2017
                 |  |  
    
        |           
                
                    | Open | 92.50 |  
                    | High | 92.90 |  
                    | Low | 92.00 |  
                    | Volume | 11,900 |  
                    | Split-adjusted Price | 82.16 |  
                
             | 
 |  MAS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 10/10/2017 | +0.60 / +0.64% | 93.40 | 94.90 | 93.40 | 94.10 | 94.17 | 83.68 | 20,680 |   |  			
            | 10/9/2017 | +1.00 / +1.08% | 92.50 | 94.00 | 92.50 | 93.50 | 93.04 | 83.14 | 12,709 |   |  
            | 10/6/2017 | +0.50 / +0.54% | 92.00 | 92.90 | 90.10 | 92.50 | 91.97 | 82.25 | 9,848 |   |  			
            | 10/5/2017 | +2.10 / +2.34% | 90.00 | 92.00 | 88.50 | 92.00 | 91.11 | 81.81 | 52,388 |   |  
            | 10/4/2017 | +0.90 / +1.01% | 89.00 | 90.00 | 89.00 | 89.90 | 89.52 | 79.94 | 6,069 |   |  			
            | 10/3/2017 | +1.00 / +1.14% | 88.60 | 90.90 | 88.10 | 89.00 | 88.78 | 79.14 | 15,921 |   |  
            | 10/2/2017 | 0.00 / 0.00% | 88.00 | 88.70 | 88.00 | 88.00 | 88.07 | 78.25 | 4,020 |   |  			
            | 9/29/2017 | 0.00 / 0.00% | 88.00 | 88.50 | 87.60 | 88.00 | 88.03 | 78.25 | 19,145 |   |  
            | 9/28/2017 | 0.00 / 0.00% | 87.90 | 88.50 | 86.30 | 88.00 | 88.05 | 78.25 | 20,390 |   |  			
            | 9/27/2017 | +2.20 / +2.56% | 85.80 | 88.00 | 85.60 | 88.00 | 86.11 | 78.25 | 27,639 |   |  
            | 9/26/2017 | +2.10 / +2.51% | 83.70 | 85.80 | 83.70 | 85.80 | 84.57 | 76.30 | 11,129 |   |  			
            | 9/25/2017 | -0.30 / -0.36% | 84.00 | 88.00 | 83.60 | 83.70 | 84.15 | 74.43 | 40,960 |   |  
            | 9/22/2017 | -0.20 / -0.24% | 84.20 | 84.20 | 84.00 | 84.00 | 84.03 | 74.69 | 20,130 |   |  			
            | 9/21/2017 | -1.30 / -1.52% | 85.40 | 85.50 | 84.00 | 84.20 | 84.73 | 74.87 | 18,349 |   |  
            | 9/20/2017 | 0.00 / 0.00% | 85.50 | 85.50 | 84.00 | 85.50 | 84.93 | 76.03 | 24,120 |   |  			
            | 9/19/2017 | +1.90 / +2.27% | 84.00 | 86.00 | 83.50 | 85.50 | 84.58 | 76.03 | 18,425 |   |  
            | 9/18/2017 | +1.10 / +1.33% | 82.50 | 90.70 | 82.50 | 83.60 | 85.99 | 74.34 | 11,110 |   |  			
            | 9/15/2017 | -0.30 / -0.36% | 82.80 | 82.80 | 82.50 | 82.50 | 82.58 | 73.36 | 10,969 |   |  
            | 9/14/2017 | +0.80 / +0.98% | 82.00 | 82.80 | 82.00 | 82.80 | 82.29 | 73.63 | 31,184 |   |  			
            | 9/13/2017 | -0.80 / -0.97% | 82.10 | 82.90 | 81.90 | 82.00 | 82.06 | 72.92 | 71,156 |   |  
            | 9/12/2017 | -1.20 / -1.43% | 81.40 | 82.80 | 81.00 | 82.80 | 81.37 | 73.63 | 29,363 |   |  			
            | 9/11/2017 | 0.00 / 0.00% | 84.00 | 84.00 | 81.10 | 84.00 | 83.10 | 74.69 | 10,295 |   |  
            | 9/8/2017 | 0.00 / 0.00% | 84.00 | 84.10 | 83.80 | 84.00 | 83.88 | 74.69 | 5,830 |   |  			
            | 9/7/2017 | -0.50 / -0.59% | 84.50 | 84.50 | 83.80 | 84.00 | 84.11 | 74.69 | 8,282 |   |  
            | 9/6/2017 | 0.00 / 0.00% | 84.50 | 84.60 | 84.00 | 84.50 | 84.46 | 75.14 | 4,300 |   |  |