| 
                 
                    Closing price on 9/24/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    62.50 | 
                 
                
                    | High | 
                    62.80 | 
                 
                
                    | Low | 
                    62.50 | 
                     
                
                    | Volume | 
                    56,980 | 
                                 
                
                    | Split-adjusted Price | 
                    42.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/24/2018
             | 
            
                +0.20 / +0.32%
             |             
            
                62.50
             |           
            
                62.80
             |               
            
                62.50
             |                           
            
                62.70
             | 
            
                62.67
             |                     
            
                42.00
             |                                 
            
                56,980
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2018
             | 
            
                +0.20 / +0.32%
             |             
            
                62.30
             |           
            
                62.60
             |               
            
                62.30
             |                           
            
                62.50
             | 
            
                62.40
             |                     
            
                41.86
             |                                 
            
                51,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2018
             | 
            
                +0.90 / +1.47%
             |             
            
                61.40
             |           
            
                62.40
             |               
            
                60.80
             |                           
            
                62.30
             | 
            
                61.30
             |                     
            
                41.73
             |                                 
            
                60,390
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                60.80
             |           
            
                62.00
             |               
            
                60.50
             |                           
            
                61.40
             | 
            
                60.91
             |                     
            
                41.13
             |                                 
            
                52,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                61.20
             |           
            
                61.90
             |               
            
                60.70
             |                           
            
                61.30
             | 
            
                61.24
             |                     
            
                41.06
             |                                 
            
                55,030
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2018
             | 
            
                -0.20 / -0.33%
             |             
            
                61.40
             |           
            
                61.60
             |               
            
                60.70
             |                           
            
                61.20
             | 
            
                61.06
             |                     
            
                40.99
             |                                 
            
                51,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2018
             | 
            
                -0.30 / -0.49%
             |             
            
                62.50
             |           
            
                62.50
             |               
            
                61.40
             |                           
            
                61.40
             | 
            
                61.57
             |                     
            
                41.13
             |                                 
            
                59,050
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2018
             | 
            
                -0.70 / -1.12%
             |             
            
                62.40
             |           
            
                62.40
             |               
            
                61.50
             |                           
            
                61.70
             | 
            
                62.01
             |                     
            
                41.33
             |                                 
            
                55,440
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                62.40
             |           
            
                62.40
             |               
            
                62.10
             |                           
            
                62.40
             | 
            
                62.30
             |                     
            
                41.80
             |                                 
            
                59,970
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2018
             | 
            
                -0.10 / -0.16%
             |             
            
                62.30
             |           
            
                62.40
             |               
            
                61.90
             |                           
            
                62.30
             | 
            
                62.19
             |                     
            
                41.73
             |                                 
            
                52,210
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2018
             | 
            
                +0.20 / +0.32%
             |             
            
                62.40
             |           
            
                62.40
             |               
            
                61.30
             |                           
            
                62.40
             | 
            
                62.26
             |                     
            
                41.80
             |                                 
            
                51,430
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2018
             | 
            
                0.00 / 0.00%
             |             
            
                62.30
             |           
            
                62.40
             |               
            
                61.50
             |                           
            
                62.20
             | 
            
                62.23
             |                     
            
                41.66
             |                                 
            
                56,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2018
             | 
            
                0.00 / 0.00%
             |             
            
                62.50
             |           
            
                62.50
             |               
            
                62.00
             |                           
            
                62.20
             | 
            
                62.15
             |                     
            
                41.66
             |                                 
            
                50,070
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2018
             | 
            
                +0.70 / +1.14%
             |             
            
                61.50
             |           
            
                62.40
             |               
            
                61.50
             |                           
            
                62.20
             | 
            
                62.17
             |                     
            
                41.66
             |                                 
            
                50,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2018
             | 
            
                -1.00 / -1.60%
             |             
            
                63.00
             |           
            
                63.00
             |               
            
                61.50
             |                           
            
                61.50
             | 
            
                62.03
             |                     
            
                41.19
             |                                 
            
                54,940
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2018
             | 
            
                -0.20 / -0.32%
             |             
            
                62.80
             |           
            
                62.80
             |               
            
                61.90
             |                           
            
                62.50
             | 
            
                62.43
             |                     
            
                41.86
             |                                 
            
                59,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2018
             | 
            
                +0.40 / +0.64%
             |             
            
                62.40
             |           
            
                63.00
             |               
            
                62.10
             |                           
            
                62.70
             | 
            
                62.52
             |                     
            
                42.00
             |                                 
            
                61,290
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2018
             | 
            
                -0.20 / -0.32%
             |             
            
                62.90
             |           
            
                62.90
             |               
            
                61.70
             |                           
            
                62.30
             | 
            
                61.92
             |                     
            
                41.73
             |                                 
            
                62,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2018
             | 
            
                +0.30 / +0.48%
             |             
            
                62.70
             |           
            
                62.80
             |               
            
                61.70
             |                           
            
                62.50
             | 
            
                62.05
             |                     
            
                41.86
             |                                 
            
                71,390
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2018
             | 
            
                +0.20 / +0.32%
             |             
            
                62.00
             |           
            
                62.50
             |               
            
                61.70
             |                           
            
                62.20
             | 
            
                62.07
             |                     
            
                41.66
             |                                 
            
                58,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2018
             | 
            
                +0.30 / +0.49%
             |             
            
                61.70
             |           
            
                62.00
             |               
            
                61.50
             |                           
            
                62.00
             | 
            
                61.61
             |                     
            
                41.53
             |                                 
            
                56,790
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2018
             | 
            
                -1.80 / -2.83%
             |             
            
                63.00
             |           
            
                63.10
             |               
            
                61.40
             |                           
            
                61.70
             | 
            
                62.17
             |                     
            
                41.33
             |                                 
            
                61,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2018
             | 
            
                0.00 / 0.00%
             |             
            
                63.00
             |           
            
                63.60
             |               
            
                62.00
             |                           
            
                63.50
             | 
            
                62.96
             |                     
            
                42.53
             |                                 
            
                96,360
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                63.90
             |           
            
                63.90
             |               
            
                62.50
             |                           
            
                63.50
             | 
            
                63.01
             |                     
            
                42.53
             |                                 
            
                69,390
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                63.90
             |           
            
                63.90
             |               
            
                63.30
             |                           
            
                63.40
             | 
            
                63.50
             |                     
            
                42.47
             |                                 
            
                71,810
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2018
             | 
            
                +0.10 / +0.16%
             |             
            
                64.00
             |           
            
                64.00
             |               
            
                62.70
             |                           
            
                63.30
             | 
            
                63.24
             |                     
            
                42.40
             |                                 
            
                74,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2018
             | 
            
                -0.20 / -0.32%
             |             
            
                64.50
             |           
            
                64.50
             |               
            
                62.50
             |                           
            
                63.20
             | 
            
                63.33
             |                     
            
                42.33
             |                                 
            
                69,790
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2018
             | 
            
                -0.50 / -0.78%
             |             
            
                64.30
             |           
            
                64.30
             |               
            
                62.50
             |                           
            
                63.40
             | 
            
                63.38
             |                     
            
                42.47
             |                                 
            
                86,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2018
             | 
            
                +1.10 / +1.75%
             |             
            
                62.80
             |           
            
                64.00
             |               
            
                62.30
             |                           
            
                63.90
             | 
            
                63.03
             |                     
            
                42.80
             |                                 
            
                80,880
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2018
             | 
            
                -1.50 / -2.33%
             |             
            
                64.40
             |           
            
                64.80
             |               
            
                62.60
             |                           
            
                62.80
             | 
            
                63.64
             |                     
            
                42.07
             |                                 
            
                88,960
             |  
            
                 
             |                                                              
             
    
         
    
    
 |