| 
                 
                    Closing price on 12/13/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    69.60 | 
                 
                
                    | High | 
                    69.80 | 
                 
                
                    | Low | 
                    69.50 | 
                     
                
                    | Volume | 
                    121,840 | 
                                 
                
                    | Split-adjusted Price | 
                    46.75 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/13/2018
             | 
            
                +0.20 / +0.29%
             |             
            
                69.60
             |           
            
                69.80
             |               
            
                69.50
             |                           
            
                69.80
             | 
            
                69.67
             |                     
            
                46.75
             |                                 
            
                121,840
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2018
             | 
            
                +0.40 / +0.58%
             |             
            
                69.20
             |           
            
                69.70
             |               
            
                69.00
             |                           
            
                69.60
             | 
            
                69.25
             |                     
            
                46.62
             |                                 
            
                103,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2018
             | 
            
                +0.10 / +0.14%
             |             
            
                69.10
             |           
            
                69.20
             |               
            
                68.90
             |                           
            
                69.20
             | 
            
                69.05
             |                     
            
                46.35
             |                                 
            
                105,660
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2018
             | 
            
                -0.30 / -0.43%
             |             
            
                69.10
             |           
            
                69.20
             |               
            
                68.90
             |                           
            
                69.10
             | 
            
                69.01
             |                     
            
                46.29
             |                                 
            
                106,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2018
             | 
            
                +0.10 / +0.14%
             |             
            
                69.30
             |           
            
                69.50
             |               
            
                69.20
             |                           
            
                69.40
             | 
            
                69.31
             |                     
            
                46.49
             |                                 
            
                96,270
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2018
             | 
            
                +0.80 / +1.17%
             |             
            
                68.50
             |           
            
                69.70
             |               
            
                68.50
             |                           
            
                69.30
             | 
            
                69.20
             |                     
            
                46.42
             |                                 
            
                97,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2018
             | 
            
                -0.40 / -0.58%
             |             
            
                68.90
             |           
            
                68.90
             |               
            
                68.00
             |                           
            
                68.50
             | 
            
                68.44
             |                     
            
                45.88
             |                                 
            
                101,470
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2018
             | 
            
                -0.60 / -0.86%
             |             
            
                69.50
             |           
            
                69.70
             |               
            
                68.00
             |                           
            
                68.90
             | 
            
                68.96
             |                     
            
                46.15
             |                                 
            
                110,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2018
             | 
            
                -0.20 / -0.29%
             |             
            
                69.90
             |           
            
                69.90
             |               
            
                69.10
             |                           
            
                69.50
             | 
            
                69.39
             |                     
            
                46.55
             |                                 
            
                111,250
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2018
             | 
            
                +0.30 / +0.43%
             |             
            
                69.40
             |           
            
                70.00
             |               
            
                69.00
             |                           
            
                69.70
             | 
            
                69.66
             |                     
            
                46.69
             |                                 
            
                138,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2018
             | 
            
                +1.40 / +2.06%
             |             
            
                68.10
             |           
            
                70.20
             |               
            
                68.10
             |                           
            
                69.40
             | 
            
                69.44
             |                     
            
                46.49
             |                                 
            
                232,830
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2018
             | 
            
                +2.00 / +3.03%
             |             
            
                66.00
             |           
            
                68.00
             |               
            
                66.00
             |                           
            
                68.00
             | 
            
                67.14
             |                     
            
                45.55
             |                                 
            
                247,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2018
             | 
            
                +0.20 / +0.30%
             |             
            
                66.00
             |           
            
                66.20
             |               
            
                65.60
             |                           
            
                66.00
             | 
            
                65.98
             |                     
            
                44.21
             |                                 
            
                126,980
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2018
             | 
            
                +0.30 / +0.46%
             |             
            
                65.50
             |           
            
                66.00
             |               
            
                65.20
             |                           
            
                65.80
             | 
            
                65.56
             |                     
            
                44.07
             |                                 
            
                179,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2018
             | 
            
                0.00 / 0.00%
             |             
            
                65.60
             |           
            
                65.60
             |               
            
                65.10
             |                           
            
                65.50
             | 
            
                65.26
             |                     
            
                43.87
             |                                 
            
                128,840
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2018
             | 
            
                +0.40 / +0.61%
             |             
            
                65.30
             |           
            
                65.70
             |               
            
                65.00
             |                           
            
                65.50
             | 
            
                65.22
             |                     
            
                43.87
             |                                 
            
                230,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2018
             | 
            
                +0.40 / +0.62%
             |             
            
                64.80
             |           
            
                65.20
             |               
            
                64.70
             |                           
            
                65.10
             | 
            
                64.81
             |                     
            
                43.61
             |                                 
            
                209,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2018
             | 
            
                +0.30 / +0.47%
             |             
            
                64.90
             |           
            
                64.90
             |               
            
                64.20
             |                           
            
                64.70
             | 
            
                64.49
             |                     
            
                43.34
             |                                 
            
                170,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2018
             | 
            
                +0.90 / +1.42%
             |             
            
                63.50
             |           
            
                64.80
             |               
            
                63.20
             |                           
            
                64.40
             | 
            
                64.48
             |                     
            
                43.14
             |                                 
            
                90,840
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2018
             | 
            
                -1.00 / -1.55%
             |             
            
                64.50
             |           
            
                65.00
             |               
            
                63.50
             |                           
            
                63.50
             | 
            
                64.17
             |                     
            
                42.53
             |                                 
            
                87,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2018
             | 
            
                -0.50 / -0.77%
             |             
            
                65.50
             |           
            
                66.10
             |               
            
                63.80
             |                           
            
                64.50
             | 
            
                64.89
             |                     
            
                43.20
             |                                 
            
                143,950
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                65.20
             |           
            
                65.60
             |               
            
                64.80
             |                           
            
                65.00
             | 
            
                65.24
             |                     
            
                43.54
             |                                 
            
                86,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2018
             | 
            
                -0.80 / -1.22%
             |             
            
                65.80
             |           
            
                65.90
             |               
            
                64.90
             |                           
            
                65.00
             | 
            
                65.20
             |                     
            
                43.54
             |                                 
            
                113,280
             |            
            
                 
             |                                       
         
    
        
            | 
                11/12/2018
             | 
            
                +0.20 / +0.30%
             |             
            
                65.60
             |           
            
                65.80
             |               
            
                65.10
             |                           
            
                65.80
             | 
            
                65.39
             |                     
            
                44.07
             |                                 
            
                94,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2018
             | 
            
                +0.20 / +0.31%
             |             
            
                65.40
             |           
            
                65.80
             |               
            
                65.10
             |                           
            
                65.60
             | 
            
                65.43
             |                     
            
                43.94
             |                                 
            
                102,960
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2018
             | 
            
                +0.40 / +0.62%
             |             
            
                65.00
             |           
            
                65.50
             |               
            
                64.80
             |                           
            
                65.40
             | 
            
                65.08
             |                     
            
                43.81
             |                                 
            
                149,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2018
             | 
            
                0.00 / 0.00%
             |             
            
                65.00
             |           
            
                66.00
             |               
            
                64.80
             |                           
            
                65.00
             | 
            
                65.31
             |                     
            
                43.54
             |                                 
            
                165,730
             |            
            
                 
             |                                       
         
    
        
            | 
                11/6/2018
             | 
            
                -1.30 / -1.96%
             |             
            
                66.80
             |           
            
                67.20
             |               
            
                65.00
             |                           
            
                65.00
             | 
            
                66.15
             |                     
            
                43.54
             |                                 
            
                118,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/5/2018
             | 
            
                +0.50 / +0.76%
             |             
            
                65.80
             |           
            
                66.60
             |               
            
                65.80
             |                           
            
                66.30
             | 
            
                66.36
             |                     
            
                44.41
             |                                 
            
                108,180
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2018
             | 
            
                +0.20 / +0.30%
             |             
            
                65.60
             |           
            
                65.90
             |               
            
                65.10
             |                           
            
                65.80
             | 
            
                65.67
             |                     
            
                44.07
             |                                 
            
                97,960
             |  
            
                 
             |                                                              
             
    
         
    
    
 |