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            | 
                    Closing price on 12/15/2017
                 |  |  
    
        |           
                
                    | Open | 89.40 |  
                    | High | 89.80 |  
                    | Low | 89.00 |  
                    | Volume | 3,400 |  
                    | Split-adjusted Price | 79.85 |  
                
             | 
 |  MAS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/15/2017 | +0.40 / +0.45% | 89.40 | 89.80 | 89.00 | 89.80 | 89.53 | 79.85 | 3,400 |   |  
            | 12/14/2017 | +0.10 / +0.11% | 89.30 | 89.40 | 89.00 | 89.40 | 89.26 | 79.50 | 1,039 |   |  			
            | 12/13/2017 | +0.30 / +0.34% | 89.50 | 89.50 | 89.00 | 89.30 | 89.16 | 79.41 | 700 |   |  
            | 12/12/2017 | -4.00 / -4.30% | 92.60 | 92.60 | 89.00 | 89.00 | 91.45 | 79.14 | 6,000 |   |  			
            | 12/11/2017 | +2.50 / +2.76% | 90.50 | 93.50 | 89.80 | 93.00 | 90.60 | 82.70 | 51,669 |   |  
            | 12/8/2017 | +0.60 / +0.67% | 89.90 | 90.50 | 89.90 | 90.50 | 90.17 | 80.47 | 3,000 |   |  			
            | 12/7/2017 | 0.00 / 0.00% | 89.90 | 91.00 | 89.90 | 89.90 | 90.26 | 79.94 | 23,331 |   |  
            | 12/6/2017 | +0.40 / +0.45% | 89.50 | 90.00 | 89.50 | 89.90 | 89.74 | 79.94 | 17,699 |   |  			
            | 12/5/2017 | +0.10 / +0.11% | 89.80 | 89.90 | 89.20 | 89.50 | 89.49 | 79.59 | 11,338 |   |  
            | 12/4/2017 | +0.60 / +0.68% | 89.00 | 90.00 | 89.00 | 89.40 | 89.33 | 79.50 | 17,833 |   |  			
            | 12/1/2017 | +1.30 / +1.49% | 87.60 | 89.10 | 87.60 | 88.80 | 88.64 | 78.96 | 16,106 |   |  
            | 11/30/2017 | -1.90 / -2.13% | 89.40 | 89.40 | 87.50 | 87.50 | 88.67 | 77.81 | 7,940 |   |  			
            | 11/29/2017 | 0.00 / 0.00% | 89.00 | 89.50 | 88.70 | 89.40 | 89.07 | 79.50 | 2,212 |   |  
            | 11/28/2017 | -0.10 / -0.11% | 89.40 | 89.40 | 89.40 | 89.40 | 89.40 | 79.50 | 120 |   |  			
            | 11/27/2017 | +0.20 / +0.22% | 89.50 | 89.50 | 89.10 | 89.50 | 89.42 | 79.59 | 17,478 |   |  
            | 11/24/2017 | 0.00 / 0.00% | 89.30 | 89.90 | 89.30 | 89.30 | 89.70 | 79.41 | 10,210 |   |  			
            | 11/23/2017 | -0.10 / -0.11% | 89.40 | 89.40 | 89.00 | 89.30 | 89.15 | 79.41 | 6,919 |   |  
            | 11/22/2017 | -0.10 / -0.11% | 90.00 | 90.00 | 89.00 | 89.40 | 89.37 | 79.50 | 5,202 |   |  			
            | 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 |   |  |