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            | 
                    Closing price on 2/7/2018
                 |  |  
    
        |           
                
                    | Open | 82.90 |  
                    | High | 82.90 |  
                    | Low | 81.00 |  
                    | Volume | 2,210 |  
                    | Split-adjusted Price | 73.63 |  
                
             | 
 |  MAS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/7/2018 | +1.80 / +2.22% | 82.90 | 82.90 | 81.00 | 82.80 | 82.30 | 73.63 | 2,210 |   |  
            | 2/6/2018 | -4.00 / -4.71% | 81.00 | 83.90 | 80.00 | 81.00 | 81.27 | 72.03 | 9,262 |   |  			
            | 2/5/2018 | -1.00 / -1.16% | 86.00 | 86.00 | 85.00 | 85.00 | 85.48 | 75.58 | 500 |   |  
            | 2/2/2018 | -1.00 / -1.15% | 87.00 | 87.00 | 85.90 | 86.00 | 86.09 | 76.47 | 4,500 |   |  			
            | 2/1/2018 | -1.50 / -1.69% | 88.50 | 88.50 | 80.00 | 87.00 | 85.39 | 77.36 | 10,550 |   |  
            | 1/31/2018 | +1.00 / +1.14% | 88.50 | 89.00 | 88.50 | 88.50 | 88.55 | 78.70 | 24,629 |   |  			
            | 1/30/2018 | 0.00 / 0.00% | 87.50 | 87.50 | 87.50 | 87.50 | 87.50 | 77.81 | 87 |   |  
            | 1/29/2018 | +0.10 / +0.11% | 85.00 | 89.90 | 85.00 | 87.50 | 87.64 | 77.81 | 5,438 |   |  			
            | 1/26/2018 | -1.60 / -1.80% | 89.10 | 89.20 | 87.00 | 87.40 | 89.00 | 77.72 | 13,260 |   |  
            | 1/25/2018 | 0.00 / 0.00% | 88.60 | 89.90 | 85.20 | 89.00 | 87.71 | 79.14 | 3,300 |   |  			
            | 1/24/2018 | +0.10 / +0.11% | 89.00 | 89.00 | 89.00 | 89.00 | 89.00 | 79.14 | 1,121 |   |  
            | 1/23/2018 | -0.90 / -1.00% | 89.90 | 89.90 | 88.80 | 88.90 | 89.37 | 79.05 | 2,300 |   |  			
            | 1/22/2018 | -0.20 / -0.22% | 90.00 | 90.00 | 89.00 | 89.80 | 89.55 | 79.85 | 1,103 |   |  
            | 1/19/2018 | +0.20 / +0.22% | 90.00 | 90.00 | 90.00 | 90.00 | 90.00 | 80.03 | 1,845 |   |  			
            | 1/18/2018 | +0.20 / +0.22% | 90.00 | 90.00 | 89.60 | 89.80 | 89.65 | 79.85 | 1,538 |   |  
            | 1/17/2018 | 0.00 / 0.00% | 89.60 | 89.60 | 89.60 | 89.60 | 89.60 | 79.67 | 3,000 |   |  			
            | 1/16/2018 | +0.10 / +0.11% | 89.50 | 89.70 | 89.50 | 89.60 | 89.53 | 79.67 | 1,904 |   |  
            | 1/15/2018 | 0.00 / 0.00% | 89.20 | 89.50 | 89.20 | 89.50 | 89.35 | 79.59 | 626 |   |  			
            | 1/12/2018 | +0.30 / +0.34% | 89.20 | 89.50 | 89.20 | 89.50 | 89.49 | 79.59 | 5,200 |   |  
            | 1/11/2018 | +0.20 / +0.22% | 89.00 | 89.20 | 89.00 | 89.20 | 89.18 | 79.32 | 2,000 |   |  			
            | 1/10/2018 | +0.50 / +0.56% | 88.50 | 89.20 | 88.50 | 89.00 | 89.00 | 79.14 | 16,675 |   |  
            | 1/9/2018 | 0.00 / 0.00% | 88.00 | 89.00 | 88.00 | 88.50 | 88.49 | 78.70 | 8,075 |   |  			
            | 1/8/2018 | -0.50 / -0.56% | 89.00 | 89.00 | 88.10 | 88.50 | 88.84 | 78.70 | 6,800 |   |  
            | 1/5/2018 | +0.10 / +0.11% | 89.20 | 89.20 | 89.00 | 89.00 | 89.13 | 79.14 | 10,140 |   |  			
            | 1/4/2018 | +1.40 / +1.60% | 88.50 | 88.90 | 88.00 | 88.90 | 88.46 | 79.05 | 7,510 |   |  
            | 1/3/2018 | -1.50 / -1.69% | 89.50 | 89.50 | 87.50 | 87.50 | 88.34 | 77.81 | 21,101 |   |  			
            | 1/2/2018 | -0.80 / -0.89% | 89.10 | 89.10 | 89.00 | 89.00 | 89.02 | 79.14 | 1,320 |   |  
            | 12/29/2017 | +0.80 / +0.90% | 89.10 | 89.80 | 89.10 | 89.80 | 89.57 | 79.85 | 4,100 |   |  			
            | 12/28/2017 | -0.60 / -0.67% | 89.60 | 89.60 | 89.00 | 89.00 | 89.56 | 79.14 | 2,600 |   |  
            | 12/27/2017 | -0.40 / -0.44% | 90.00 | 90.00 | 89.60 | 89.60 | 89.95 | 79.67 | 7,000 |   |  |