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            | 
                    Closing price on 10/4/2017
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        |           
                
                    | Open | 89.00 |  
                    | High | 90.00 |  
                    | Low | 89.00 |  
                    | Volume | 6,069 |  
                    | Split-adjusted Price | 79.94 |  
                
             | 
 |  MAS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 9/5/2017 | -0.20 / -0.24% | 85.00 | 85.00 | 84.50 | 84.50 | 84.82 | 75.14 | 8,641 |   |  			
            | 9/1/2017 | -3.60 / -4.08% | 85.00 | 85.00 | 84.30 | 84.70 | 84.70 | 75.32 | 8,812 |   |  
            | 8/31/2017 | -1.20 / -1.34% | 89.50 | 89.50 | 87.90 | 88.30 | 88.40 | 74.96 | 53,383 |   |  			
            | 8/30/2017 | -0.40 / -0.44% | 90.00 | 90.00 | 89.10 | 89.50 | 89.54 | 75.98 | 21,410 |   |  
            | 8/29/2017 | 0.00 / 0.00% | 90.00 | 90.00 | 89.00 | 89.90 | 89.97 | 76.32 | 18,957 |   |  			
            | 8/28/2017 | +0.90 / +1.01% | 89.90 | 90.10 | 89.90 | 89.90 | 90.00 | 76.32 | 15,265 |   |  
            | 8/25/2017 | -1.10 / -1.22% | 90.00 | 91.00 | 89.00 | 89.00 | 89.95 | 75.56 | 43,004 |   |  			
            | 8/24/2017 | +0.10 / +0.11% | 90.70 | 91.00 | 90.00 | 90.10 | 90.47 | 76.49 | 30,497 |   |  
            | 8/23/2017 | +0.50 / +0.56% | 90.00 | 90.20 | 89.50 | 90.00 | 89.83 | 76.40 | 49,225 |   |  |