| 
                 
                    Closing price on 7/16/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    48.40 | 
                 
                
                    | High | 
                    50.00 | 
                 
                
                    | Low | 
                    48.40 | 
                     
                
                    | Volume | 
                    6,200 | 
                                 
                
                    | Split-adjusted Price | 
                    44.02 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/16/2021
             | 
            
                +0.10 / +0.20%
             |             
            
                48.40
             |           
            
                50.00
             |               
            
                48.40
             |                           
            
                48.90
             | 
            
                49.03
             |                     
            
                44.02
             |                                 
            
                6,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2021
             | 
            
                +0.20 / +0.41%
             |             
            
                48.95
             |           
            
                48.95
             |               
            
                47.70
             |                           
            
                48.80
             | 
            
                48.54
             |                     
            
                43.93
             |                                 
            
                21,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2021
             | 
            
                +0.35 / +0.73%
             |             
            
                48.90
             |           
            
                48.90
             |               
            
                48.00
             |                           
            
                48.60
             | 
            
                48.34
             |                     
            
                43.75
             |                                 
            
                30,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2021
             | 
            
                +0.15 / +0.31%
             |             
            
                48.10
             |           
            
                48.90
             |               
            
                48.10
             |                           
            
                48.25
             | 
            
                48.38
             |                     
            
                43.44
             |                                 
            
                15,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2021
             | 
            
                -2.10 / -4.18%
             |             
            
                50.00
             |           
            
                50.00
             |               
            
                46.80
             |                           
            
                48.10
             | 
            
                48.60
             |                     
            
                43.30
             |                                 
            
                117,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2021
             | 
            
                -0.10 / -0.20%
             |             
            
                50.20
             |           
            
                51.00
             |               
            
                50.00
             |                           
            
                50.20
             | 
            
                50.28
             |                     
            
                45.19
             |                                 
            
                39,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2021
             | 
            
                -0.70 / -1.37%
             |             
            
                51.00
             |           
            
                51.00
             |               
            
                50.20
             |                           
            
                50.30
             | 
            
                50.71
             |                     
            
                45.28
             |                                 
            
                19,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2021
             | 
            
                0.00 / 0.00%
             |             
            
                51.00
             |           
            
                51.00
             |               
            
                49.00
             |                           
            
                51.00
             | 
            
                50.55
             |                     
            
                45.91
             |                                 
            
                78,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2021
             | 
            
                -0.60 / -1.16%
             |             
            
                52.30
             |           
            
                52.30
             |               
            
                51.00
             |                           
            
                51.00
             | 
            
                51.61
             |                     
            
                45.91
             |                                 
            
                47,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2021
             | 
            
                +0.20 / +0.39%
             |             
            
                51.10
             |           
            
                52.20
             |               
            
                51.00
             |                           
            
                51.60
             | 
            
                51.83
             |                     
            
                46.45
             |                                 
            
                91,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2021
             | 
            
                -0.40 / -0.77%
             |             
            
                51.80
             |           
            
                51.90
             |               
            
                51.30
             |                           
            
                51.40
             | 
            
                51.70
             |                     
            
                46.27
             |                                 
            
                26,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2021
             | 
            
                +0.80 / +1.57%
             |             
            
                51.00
             |           
            
                51.80
             |               
            
                51.00
             |                           
            
                51.80
             | 
            
                51.35
             |                     
            
                46.63
             |                                 
            
                34,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/30/2021
             | 
            
                0.00 / 0.00%
             |             
            
                50.20
             |           
            
                51.80
             |               
            
                50.20
             |                           
            
                51.00
             | 
            
                51.09
             |                     
            
                45.91
             |                                 
            
                39,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2021
             | 
            
                +0.30 / +0.59%
             |             
            
                51.80
             |           
            
                51.80
             |               
            
                50.90
             |                           
            
                51.00
             | 
            
                51.27
             |                     
            
                45.91
             |                                 
            
                48,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2021
             | 
            
                +0.70 / +1.40%
             |             
            
                50.00
             |           
            
                51.40
             |               
            
                50.00
             |                           
            
                50.70
             | 
            
                50.00
             |                     
            
                45.64
             |                                 
            
                34,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2021
             | 
            
                -1.20 / -2.34%
             |             
            
                51.20
             |           
            
                51.30
             |               
            
                50.00
             |                           
            
                50.00
             | 
            
                50.50
             |                     
            
                45.01
             |                                 
            
                22,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2021
             | 
            
                -0.70 / -1.35%
             |             
            
                51.20
             |           
            
                51.70
             |               
            
                50.10
             |                           
            
                51.20
             | 
            
                51.16
             |                     
            
                46.09
             |                                 
            
                58,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/23/2021
             | 
            
                -0.50 / -0.95%
             |             
            
                52.50
             |           
            
                52.80
             |               
            
                51.80
             |                           
            
                51.90
             | 
            
                52.11
             |                     
            
                46.72
             |                                 
            
                30,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2021
             | 
            
                +0.20 / +0.38%
             |             
            
                52.50
             |           
            
                52.70
             |               
            
                51.50
             |                           
            
                52.40
             | 
            
                52.19
             |                     
            
                47.17
             |                                 
            
                45,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2021
             | 
            
                +0.70 / +1.36%
             |             
            
                51.90
             |           
            
                52.80
             |               
            
                51.50
             |                           
            
                52.20
             | 
            
                52.22
             |                     
            
                46.99
             |                                 
            
                58,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2021
             | 
            
                +0.30 / +0.59%
             |             
            
                50.90
             |           
            
                51.50
             |               
            
                50.90
             |                           
            
                51.50
             | 
            
                51.31
             |                     
            
                46.36
             |                                 
            
                18,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2021
             | 
            
                -0.20 / -0.39%
             |             
            
                49.80
             |           
            
                51.40
             |               
            
                49.80
             |                           
            
                51.20
             | 
            
                51.40
             |                     
            
                46.09
             |                                 
            
                31,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/16/2021
             | 
            
                +0.40 / +0.78%
             |             
            
                51.40
             |           
            
                52.00
             |               
            
                51.00
             |                           
            
                51.40
             | 
            
                51.22
             |                     
            
                46.27
             |                                 
            
                32,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2021
             | 
            
                -0.20 / -0.39%
             |             
            
                51.50
             |           
            
                51.50
             |               
            
                50.00
             |                           
            
                51.00
             | 
            
                50.87
             |                     
            
                45.91
             |                                 
            
                47,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2021
             | 
            
                +0.90 / +1.79%
             |             
            
                50.20
             |           
            
                51.20
             |               
            
                49.70
             |                           
            
                51.20
             | 
            
                50.31
             |                     
            
                46.09
             |                                 
            
                102,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2021
             | 
            
                -0.60 / -1.18%
             |             
            
                51.50
             |           
            
                51.50
             |               
            
                50.10
             |                           
            
                50.30
             | 
            
                50.27
             |                     
            
                45.28
             |                                 
            
                48,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2021
             | 
            
                +1.90 / +3.88%
             |             
            
                48.20
             |           
            
                51.50
             |               
            
                48.20
             |                           
            
                50.90
             | 
            
                50.07
             |                     
            
                45.82
             |                                 
            
                117,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2021
             | 
            
                +1.85 / +3.92%
             |             
            
                47.15
             |           
            
                49.20
             |               
            
                47.15
             |                           
            
                49.00
             | 
            
                48.06
             |                     
            
                44.11
             |                                 
            
                106,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2021
             | 
            
                -0.05 / -0.11%
             |             
            
                48.00
             |           
            
                48.00
             |               
            
                47.00
             |                           
            
                47.15
             | 
            
                47.34
             |                     
            
                42.45
             |                                 
            
                180,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2021
             | 
            
                -0.30 / -0.63%
             |             
            
                47.50
             |           
            
                48.00
             |               
            
                46.30
             |                           
            
                47.20
             | 
            
                47.12
             |                     
            
                42.49
             |                                 
            
                117,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |