| 
                 
                    Closing price on 3/9/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    82.70 | 
                 
                
                    | High | 
                    83.00 | 
                 
                
                    | Low | 
                    80.00 | 
                     
                
                    | Volume | 
                    16,520 | 
                                 
                
                    | Split-adjusted Price | 
                    71.14 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
MAS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/9/2018
             | 
            
                -2.20 / -2.68%
             |             
            
                82.70
             |           
            
                83.00
             |               
            
                80.00
             |                           
            
                80.00
             | 
            
                80.79
             |                     
            
                71.14
             |                                 
            
                16,520
             |            
            
                 
             |                                       
         
    
        
            | 
                3/8/2018
             | 
            
                +0.20 / +0.24%
             |             
            
                83.00
             |           
            
                83.30
             |               
            
                82.10
             |                           
            
                82.20
             | 
            
                82.53
             |                     
            
                73.09
             |                                 
            
                8,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2018
             | 
            
                -1.00 / -1.20%
             |             
            
                84.00
             |           
            
                84.00
             |               
            
                82.00
             |                           
            
                82.00
             | 
            
                82.69
             |                     
            
                72.92
             |                                 
            
                13,467
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2018
             | 
            
                -7.00 / -7.78%
             |             
            
                87.50
             |           
            
                87.50
             |               
            
                83.00
             |                           
            
                83.00
             | 
            
                84.14
             |                     
            
                73.81
             |                                 
            
                8,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/5/2018
             | 
            
                +7.00 / +8.43%
             |             
            
                83.00
             |           
            
                90.00
             |               
            
                83.00
             |                           
            
                90.00
             | 
            
                84.12
             |                     
            
                80.03
             |                                 
            
                37,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/2/2018
             | 
            
                -0.10 / -0.12%
             |             
            
                83.00
             |           
            
                84.90
             |               
            
                82.20
             |                           
            
                83.00
             | 
            
                82.26
             |                     
            
                73.81
             |                                 
            
                48,163
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/1/2018
             | 
            
                -0.20 / -0.24%
             |             
            
                83.50
             |           
            
                83.50
             |               
            
                83.10
             |                           
            
                83.10
             | 
            
                83.24
             |                     
            
                73.89
             |                                 
            
                49,305
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2018
             | 
            
                +0.10 / +0.12%
             |             
            
                83.00
             |           
            
                83.40
             |               
            
                83.00
             |                           
            
                83.30
             | 
            
                83.20
             |                     
            
                74.07
             |                                 
            
                52,529
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2018
             | 
            
                +0.20 / +0.24%
             |             
            
                82.60
             |           
            
                83.20
             |               
            
                82.60
             |                           
            
                83.20
             | 
            
                83.00
             |                     
            
                73.98
             |                                 
            
                40,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2018
             | 
            
                0.00 / 0.00%
             |             
            
                83.00
             |           
            
                84.00
             |               
            
                82.90
             |                           
            
                83.00
             | 
            
                83.15
             |                     
            
                73.81
             |                                 
            
                4,212
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2018
             | 
            
                +0.10 / +0.12%
             |             
            
                84.00
             |           
            
                84.00
             |               
            
                82.90
             |                           
            
                83.00
             | 
            
                83.57
             |                     
            
                73.81
             |                                 
            
                5,963
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2018
             | 
            
                0.00 / 0.00%
             |             
            
                83.00
             |           
            
                83.00
             |               
            
                82.90
             |                           
            
                82.90
             | 
            
                82.95
             |                     
            
                73.72
             |                                 
            
                3,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2018
             | 
            
                +0.60 / +0.73%
             |             
            
                82.30
             |           
            
                83.00
             |               
            
                82.30
             |                           
            
                82.90
             | 
            
                82.71
             |                     
            
                73.72
             |                                 
            
                4,305
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2018
             | 
            
                +1.30 / +1.60%
             |             
            
                81.00
             |           
            
                82.40
             |               
            
                81.00
             |                           
            
                82.30
             | 
            
                81.09
             |                     
            
                73.18
             |                                 
            
                34,254
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2018
             | 
            
                0.00 / 0.00%
             |             
            
                81.00
             |           
            
                81.00
             |               
            
                80.10
             |                           
            
                81.00
             | 
            
                80.55
             |                     
            
                72.03
             |                                 
            
                3,810
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2018
             | 
            
                -1.60 / -1.94%
             |             
            
                81.00
             |           
            
                82.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                81.89
             |                     
            
                72.03
             |                                 
            
                7,683
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2018
             | 
            
                -0.20 / -0.24%
             |             
            
                82.50
             |           
            
                82.60
             |               
            
                82.50
             |                           
            
                82.60
             | 
            
                82.55
             |                     
            
                73.45
             |                                 
            
                6,730
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |