| 
                 
                    Closing price on 5/8/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    21.10 | 
                 
                
                    | High | 
                    21.45 | 
                 
                
                    | Low | 
                    21.10 | 
                     
                
                    | Volume | 
                    3,927,890 | 
                                 
                
                    | Split-adjusted Price | 
                    5.73 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
MBB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/8/2019
             | 
            
                -0.15 / -0.70%
             |             
            
                21.10
             |           
            
                21.45
             |               
            
                21.10
             |                           
            
                21.30
             | 
            
                21.31
             |                     
            
                5.73
             |                                 
            
                3,927,890
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2019
             | 
            
                -0.05 / -0.23%
             |             
            
                21.65
             |           
            
                21.70
             |               
            
                21.45
             |                           
            
                21.45
             | 
            
                21.52
             |                     
            
                5.77
             |                                 
            
                1,339,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2019
             | 
            
                -0.60 / -2.71%
             |             
            
                21.75
             |           
            
                21.80
             |               
            
                21.35
             |                           
            
                21.50
             | 
            
                21.59
             |                     
            
                5.79
             |                                 
            
                3,548,390
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2019
             | 
            
                +0.20 / +0.91%
             |             
            
                21.90
             |           
            
                22.15
             |               
            
                21.70
             |                           
            
                22.10
             | 
            
                22.04
             |                     
            
                5.95
             |                                 
            
                3,866,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2019
             | 
            
                +0.10 / +0.46%
             |             
            
                21.85
             |           
            
                22.10
             |               
            
                21.80
             |                           
            
                21.90
             | 
            
                21.98
             |                     
            
                5.90
             |                                 
            
                3,033,110
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2019
             | 
            
                +0.30 / +1.40%
             |             
            
                21.50
             |           
            
                21.80
             |               
            
                21.40
             |                           
            
                21.80
             | 
            
                21.66
             |                     
            
                5.87
             |                                 
            
                2,171,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2019
             | 
            
                0.00 / 0.00%
             |             
            
                21.50
             |           
            
                21.60
             |               
            
                21.40
             |                           
            
                21.50
             | 
            
                21.47
             |                     
            
                5.79
             |                                 
            
                1,319,690
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2019
             | 
            
                +0.20 / +0.94%
             |             
            
                21.35
             |           
            
                21.50
             |               
            
                21.30
             |                           
            
                21.50
             | 
            
                21.43
             |                     
            
                5.79
             |                                 
            
                1,572,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/23/2019
             | 
            
                -0.10 / -0.47%
             |             
            
                21.30
             |           
            
                21.45
             |               
            
                21.20
             |                           
            
                21.30
             | 
            
                21.34
             |                     
            
                5.73
             |                                 
            
                2,007,220
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2019
             | 
            
                -0.20 / -0.93%
             |             
            
                21.65
             |           
            
                21.65
             |               
            
                21.15
             |                           
            
                21.40
             | 
            
                21.37
             |                     
            
                5.76
             |                                 
            
                3,036,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2019
             | 
            
                +0.05 / +0.23%
             |             
            
                21.60
             |           
            
                21.70
             |               
            
                21.45
             |                           
            
                21.60
             | 
            
                21.54
             |                     
            
                5.81
             |                                 
            
                1,796,860
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2019
             | 
            
                +0.05 / +0.23%
             |             
            
                21.50
             |           
            
                21.85
             |               
            
                21.40
             |                           
            
                21.55
             | 
            
                21.61
             |                     
            
                5.80
             |                                 
            
                3,913,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                21.65
             |           
            
                21.75
             |               
            
                21.50
             |                           
            
                21.50
             | 
            
                21.62
             |                     
            
                5.79
             |                                 
            
                3,074,182
             |            
            
                 
             |                                       
         
    
        
            | 
                4/16/2019
             | 
            
                -0.40 / -1.83%
             |             
            
                21.35
             |           
            
                21.70
             |               
            
                21.35
             |                           
            
                21.50
             | 
            
                21.56
             |                     
            
                5.79
             |                                 
            
                3,194,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2019
             | 
            
                -0.10 / -0.45%
             |             
            
                22.10
             |           
            
                22.10
             |               
            
                21.85
             |                           
            
                21.90
             | 
            
                21.92
             |                     
            
                5.90
             |                                 
            
                1,062,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2019
             | 
            
                +0.05 / +0.23%
             |             
            
                21.95
             |           
            
                22.05
             |               
            
                21.85
             |                           
            
                22.00
             | 
            
                21.97
             |                     
            
                5.92
             |                                 
            
                1,402,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2019
             | 
            
                -0.30 / -1.35%
             |             
            
                22.05
             |           
            
                22.20
             |               
            
                21.90
             |                           
            
                21.95
             | 
            
                22.01
             |                     
            
                5.91
             |                                 
            
                2,879,220
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2019
             | 
            
                -0.10 / -0.45%
             |             
            
                22.40
             |           
            
                22.45
             |               
            
                22.10
             |                           
            
                22.25
             | 
            
                22.30
             |                     
            
                5.99
             |                                 
            
                3,079,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2019
             | 
            
                +0.20 / +0.90%
             |             
            
                22.15
             |           
            
                22.35
             |               
            
                22.05
             |                           
            
                22.35
             | 
            
                22.18
             |                     
            
                6.02
             |                                 
            
                3,341,370
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2019
             | 
            
                -0.50 / -2.21%
             |             
            
                22.35
             |           
            
                22.40
             |               
            
                22.15
             |                           
            
                22.15
             | 
            
                22.24
             |                     
            
                5.96
             |                                 
            
                2,881,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2019
             | 
            
                +0.15 / +0.67%
             |             
            
                22.60
             |           
            
                22.75
             |               
            
                22.55
             |                           
            
                22.65
             | 
            
                22.63
             |                     
            
                5.94
             |                                 
            
                3,233,580
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2019
             | 
            
                +0.05 / +0.22%
             |             
            
                22.35
             |           
            
                22.55
             |               
            
                22.35
             |                           
            
                22.50
             | 
            
                22.48
             |                     
            
                5.90
             |                                 
            
                3,527,930
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2019
             | 
            
                +0.05 / +0.22%
             |             
            
                22.55
             |           
            
                22.60
             |               
            
                22.35
             |                           
            
                22.45
             | 
            
                22.44
             |                     
            
                5.88
             |                                 
            
                3,180,520
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2019
             | 
            
                0.00 / 0.00%
             |             
            
                22.45
             |           
            
                22.55
             |               
            
                22.30
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                5.87
             |                                 
            
                1,776,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2019
             | 
            
                0.00 / 0.00%
             |             
            
                22.45
             |           
            
                22.55
             |               
            
                22.35
             |                           
            
                22.40
             | 
            
                22.44
             |                     
            
                5.87
             |                                 
            
                2,570,290
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2019
             | 
            
                0.00 / 0.00%
             |             
            
                22.30
             |           
            
                22.50
             |               
            
                22.30
             |                           
            
                22.40
             | 
            
                22.36
             |                     
            
                5.87
             |                                 
            
                1,745,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2019
             | 
            
                +0.25 / +1.13%
             |             
            
                22.20
             |           
            
                22.60
             |               
            
                22.20
             |                           
            
                22.40
             | 
            
                22.39
             |                     
            
                5.87
             |                                 
            
                2,507,890
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                22.30
             |           
            
                22.50
             |               
            
                22.15
             |                           
            
                22.15
             | 
            
                22.31
             |                     
            
                5.80
             |                                 
            
                4,315,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2019
             | 
            
                -0.75 / -3.28%
             |             
            
                22.40
             |           
            
                22.55
             |               
            
                22.05
             |                           
            
                22.15
             | 
            
                22.32
             |                     
            
                5.80
             |                                 
            
                6,612,290
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2019
             | 
            
                +0.10 / +0.44%
             |             
            
                22.95
             |           
            
                23.10
             |               
            
                22.75
             |                           
            
                22.90
             | 
            
                22.88
             |                     
            
                6.00
             |                                 
            
                4,183,480
             |  
            
                 
             |                                                              
             
    
         
    
    
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