| 
                 
                    Closing price on 10/22/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    56.90 | 
                 
                
                    | High | 
                    56.90 | 
                 
                
                    | Low | 
                    56.10 | 
                     
                
                    | Volume | 
                    18,000 | 
                                 
                
                    | Split-adjusted Price | 
                    50.51 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/22/2021
             | 
            
                -0.80 / -1.41%
             |             
            
                56.90
             |           
            
                56.90
             |               
            
                56.10
             |                           
            
                56.10
             | 
            
                56.39
             |                     
            
                50.51
             |                                 
            
                18,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/21/2021
             | 
            
                -0.60 / -1.04%
             |             
            
                57.90
             |           
            
                57.90
             |               
            
                56.50
             |                           
            
                56.90
             | 
            
                57.02
             |                     
            
                51.23
             |                                 
            
                32,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/20/2021
             | 
            
                0.00 / 0.00%
             |             
            
                58.40
             |           
            
                58.40
             |               
            
                56.90
             |                           
            
                57.50
             | 
            
                57.23
             |                     
            
                51.77
             |                                 
            
                15,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/19/2021
             | 
            
                -0.30 / -0.52%
             |             
            
                57.80
             |           
            
                57.80
             |               
            
                57.20
             |                           
            
                57.50
             | 
            
                57.42
             |                     
            
                51.77
             |                                 
            
                15,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/18/2021
             | 
            
                -0.10 / -0.17%
             |             
            
                57.90
             |           
            
                58.50
             |               
            
                57.80
             |                           
            
                57.80
             | 
            
                57.99
             |                     
            
                52.04
             |                                 
            
                16,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2021
             | 
            
                +0.10 / +0.17%
             |             
            
                58.00
             |           
            
                58.40
             |               
            
                57.50
             |                           
            
                57.90
             | 
            
                58.09
             |                     
            
                52.13
             |                                 
            
                15,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2021
             | 
            
                +0.10 / +0.17%
             |             
            
                58.00
             |           
            
                58.50
             |               
            
                57.50
             |                           
            
                57.80
             | 
            
                57.96
             |                     
            
                52.04
             |                                 
            
                22,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/13/2021
             | 
            
                +0.10 / +0.17%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                57.30
             |                           
            
                57.70
             | 
            
                57.66
             |                     
            
                51.95
             |                                 
            
                9,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/12/2021
             | 
            
                -0.30 / -0.52%
             |             
            
                58.00
             |           
            
                58.00
             |               
            
                57.30
             |                           
            
                57.60
             | 
            
                57.81
             |                     
            
                51.86
             |                                 
            
                16,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2021
             | 
            
                +1.00 / +1.76%
             |             
            
                55.80
             |           
            
                59.00
             |               
            
                55.80
             |                           
            
                57.90
             | 
            
                57.26
             |                     
            
                52.13
             |                                 
            
                47,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2021
             | 
            
                +0.30 / +0.53%
             |             
            
                56.60
             |           
            
                56.90
             |               
            
                56.50
             |                           
            
                56.90
             | 
            
                56.69
             |                     
            
                51.23
             |                                 
            
                9,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2021
             | 
            
                +0.20 / +0.35%
             |             
            
                56.50
             |           
            
                57.00
             |               
            
                56.00
             |                           
            
                56.60
             | 
            
                56.49
             |                     
            
                50.96
             |                                 
            
                11,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2021
             | 
            
                +0.90 / +1.62%
             |             
            
                56.00
             |           
            
                56.80
             |               
            
                55.60
             |                           
            
                56.40
             | 
            
                56.11
             |                     
            
                50.78
             |                                 
            
                16,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/5/2021
             | 
            
                0.00 / 0.00%
             |             
            
                55.50
             |           
            
                55.80
             |               
            
                55.00
             |                           
            
                55.50
             | 
            
                55.46
             |                     
            
                49.97
             |                                 
            
                15,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2021
             | 
            
                -0.10 / -0.18%
             |             
            
                55.70
             |           
            
                55.70
             |               
            
                55.40
             |                           
            
                55.50
             | 
            
                55.56
             |                     
            
                49.97
             |                                 
            
                16,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2021
             | 
            
                -0.90 / -1.59%
             |             
            
                56.50
             |           
            
                56.50
             |               
            
                55.60
             |                           
            
                55.60
             | 
            
                55.95
             |                     
            
                50.06
             |                                 
            
                60,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2021
             | 
            
                0.00 / 0.00%
             |             
            
                56.50
             |           
            
                56.50
             |               
            
                55.80
             |                           
            
                56.50
             | 
            
                56.15
             |                     
            
                50.87
             |                                 
            
                11,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2021
             | 
            
                -0.50 / -0.88%
             |             
            
                55.50
             |           
            
                56.90
             |               
            
                55.50
             |                           
            
                56.50
             | 
            
                56.24
             |                     
            
                50.87
             |                                 
            
                14,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2021
             | 
            
                +2.80 / +5.17%
             |             
            
                54.20
             |           
            
                57.00
             |               
            
                54.20
             |                           
            
                57.00
             | 
            
                56.06
             |                     
            
                51.32
             |                                 
            
                68,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2021
             | 
            
                -0.10 / -0.18%
             |             
            
                55.80
             |           
            
                55.80
             |               
            
                54.00
             |                           
            
                54.20
             | 
            
                54.42
             |                     
            
                48.80
             |                                 
            
                31,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2021
             | 
            
                0.00 / 0.00%
             |             
            
                54.30
             |           
            
                55.50
             |               
            
                53.30
             |                           
            
                54.30
             | 
            
                54.42
             |                     
            
                48.89
             |                                 
            
                30,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2021
             | 
            
                +0.30 / +0.56%
             |             
            
                54.10
             |           
            
                55.40
             |               
            
                54.10
             |                           
            
                54.30
             | 
            
                54.54
             |                     
            
                48.89
             |                                 
            
                13,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2021
             | 
            
                +0.30 / +0.56%
             |             
            
                53.70
             |           
            
                55.10
             |               
            
                53.70
             |                           
            
                54.00
             | 
            
                54.28
             |                     
            
                48.62
             |                                 
            
                14,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2021
             | 
            
                -0.60 / -1.10%
             |             
            
                54.20
             |           
            
                55.50
             |               
            
                53.60
             |                           
            
                53.70
             | 
            
                54.03
             |                     
            
                48.35
             |                                 
            
                37,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2021
             | 
            
                -0.20 / -0.37%
             |             
            
                54.60
             |           
            
                55.90
             |               
            
                54.00
             |                           
            
                54.30
             | 
            
                55.10
             |                     
            
                48.89
             |                                 
            
                44,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2021
             | 
            
                +0.40 / +0.74%
             |             
            
                54.10
             |           
            
                55.00
             |               
            
                53.20
             |                           
            
                54.50
             | 
            
                53.78
             |                     
            
                49.07
             |                                 
            
                22,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2021
             | 
            
                0.00 / 0.00%
             |             
            
                53.40
             |           
            
                54.10
             |               
            
                53.30
             |                           
            
                54.10
             | 
            
                53.63
             |                     
            
                48.71
             |                                 
            
                39,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2021
             | 
            
                -0.20 / -0.37%
             |             
            
                54.30
             |           
            
                55.40
             |               
            
                53.40
             |                           
            
                54.10
             | 
            
                54.16
             |                     
            
                48.71
             |                                 
            
                29,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2021
             | 
            
                -1.60 / -2.86%
             |             
            
                55.10
             |           
            
                55.30
             |               
            
                54.00
             |                           
            
                54.30
             | 
            
                54.46
             |                     
            
                48.89
             |                                 
            
                67,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2021
             | 
            
                +0.50 / +0.90%
             |             
            
                59.20
             |           
            
                59.20
             |               
            
                55.40
             |                           
            
                55.90
             | 
            
                56.88
             |                     
            
                50.33
             |                                 
            
                155,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |