| 
                 
                    Closing price on 6/11/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    51.50 | 
                 
                
                    | High | 
                    51.50 | 
                 
                
                    | Low | 
                    50.10 | 
                     
                
                    | Volume | 
                    48,100 | 
                                 
                
                    | Split-adjusted Price | 
                    45.28 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2021
             | 
            
                +0.15 / +0.32%
             |             
            
                47.35
             |           
            
                48.75
             |               
            
                47.30
             |                           
            
                47.50
             | 
            
                47.35
             |                     
            
                42.76
             |                                 
            
                86,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2021
             | 
            
                +1.15 / +2.49%
             |             
            
                47.00
             |           
            
                48.00
             |               
            
                47.00
             |                           
            
                47.35
             | 
            
                47.43
             |                     
            
                42.63
             |                                 
            
                91,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2021
             | 
            
                -0.15 / -0.32%
             |             
            
                46.35
             |           
            
                46.35
             |               
            
                46.00
             |                           
            
                46.20
             | 
            
                46.22
             |                     
            
                41.59
             |                                 
            
                74,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2021
             | 
            
                -0.30 / -0.64%
             |             
            
                46.60
             |           
            
                46.60
             |               
            
                46.05
             |                           
            
                46.35
             | 
            
                46.43
             |                     
            
                41.73
             |                                 
            
                17,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2021
             | 
            
                -0.35 / -0.74%
             |             
            
                46.95
             |           
            
                46.95
             |               
            
                46.00
             |                           
            
                46.65
             | 
            
                46.62
             |                     
            
                42.00
             |                                 
            
                33,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2021
             | 
            
                +0.50 / +1.08%
             |             
            
                46.50
             |           
            
                48.50
             |               
            
                46.50
             |                           
            
                47.00
             | 
            
                47.06
             |                     
            
                42.31
             |                                 
            
                43,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2021
             | 
            
                -1.40 / -2.92%
             |             
            
                47.90
             |           
            
                48.10
             |               
            
                46.50
             |                           
            
                46.50
             | 
            
                47.27
             |                     
            
                41.86
             |                                 
            
                59,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2021
             | 
            
                -0.70 / -1.44%
             |             
            
                48.50
             |           
            
                48.50
             |               
            
                47.85
             |                           
            
                47.90
             | 
            
                48.07
             |                     
            
                43.12
             |                                 
            
                61,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2021
             | 
            
                -1.40 / -2.80%
             |             
            
                50.00
             |           
            
                50.00
             |               
            
                48.60
             |                           
            
                48.60
             | 
            
                49.27
             |                     
            
                43.75
             |                                 
            
                34,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2021
             | 
            
                +0.10 / +0.20%
             |             
            
                48.00
             |           
            
                50.00
             |               
            
                48.00
             |                           
            
                50.00
             | 
            
                49.77
             |                     
            
                45.01
             |                                 
            
                101,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2021
             | 
            
                0.00 / 0.00%
             |             
            
                49.90
             |           
            
                50.20
             |               
            
                49.00
             |                           
            
                49.90
             | 
            
                49.87
             |                     
            
                44.92
             |                                 
            
                77,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2021
             | 
            
                +1.40 / +2.89%
             |             
            
                48.70
             |           
            
                51.00
             |               
            
                48.60
             |                           
            
                49.90
             | 
            
                50.02
             |                     
            
                44.92
             |                                 
            
                165,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2021
             | 
            
                +2.50 / +5.43%
             |             
            
                45.60
             |           
            
                49.00
             |               
            
                45.60
             |                           
            
                48.50
             | 
            
                47.87
             |                     
            
                43.66
             |                                 
            
                43,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2021
             | 
            
                -2.20 / -4.56%
             |             
            
                48.20
             |           
            
                48.40
             |               
            
                45.80
             |                           
            
                46.00
             | 
            
                45.80
             |                     
            
                41.41
             |                                 
            
                168,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2021
             | 
            
                -2.80 / -5.49%
             |             
            
                50.80
             |           
            
                50.90
             |               
            
                48.00
             |                           
            
                48.20
             | 
            
                48.00
             |                     
            
                43.39
             |                                 
            
                117,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2021
             | 
            
                -0.20 / -0.39%
             |             
            
                52.00
             |           
            
                52.00
             |               
            
                51.00
             |                           
            
                51.00
             | 
            
                51.19
             |                     
            
                45.91
             |                                 
            
                22,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2021
             | 
            
                -0.60 / -1.16%
             |             
            
                51.70
             |           
            
                51.70
             |               
            
                51.00
             |                           
            
                51.20
             | 
            
                51.26
             |                     
            
                46.09
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2021
             | 
            
                +0.80 / +1.57%
             |             
            
                51.00
             |           
            
                51.80
             |               
            
                50.90
             |                           
            
                51.80
             | 
            
                51.10
             |                     
            
                46.63
             |                                 
            
                30,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2021
             | 
            
                +0.40 / +0.79%
             |             
            
                50.30
             |           
            
                51.20
             |               
            
                50.30
             |                           
            
                51.00
             | 
            
                50.77
             |                     
            
                45.91
             |                                 
            
                20,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2021
             | 
            
                -1.30 / -2.50%
             |             
            
                51.90
             |           
            
                51.90
             |               
            
                50.10
             |                           
            
                50.60
             | 
            
                50.84
             |                     
            
                45.55
             |                                 
            
                52,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2021
             | 
            
                -1.60 / -2.99%
             |             
            
                53.10
             |           
            
                53.40
             |               
            
                51.00
             |                           
            
                51.90
             | 
            
                52.30
             |                     
            
                46.72
             |                                 
            
                37,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2021
             | 
            
                -0.70 / -1.29%
             |             
            
                53.80
             |           
            
                54.00
             |               
            
                53.50
             |                           
            
                53.50
             | 
            
                54.00
             |                     
            
                48.16
             |                                 
            
                25,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2021
             | 
            
                -0.80 / -1.45%
             |             
            
                55.00
             |           
            
                55.00
             |               
            
                54.00
             |                           
            
                54.20
             | 
            
                54.53
             |                     
            
                48.80
             |                                 
            
                15,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2021
             | 
            
                -0.40 / -0.72%
             |             
            
                52.00
             |           
            
                55.10
             |               
            
                52.00
             |                           
            
                55.00
             | 
            
                54.27
             |                     
            
                49.52
             |                                 
            
                100,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2021
             | 
            
                +1.40 / +2.59%
             |             
            
                54.10
             |           
            
                55.50
             |               
            
                54.00
             |                           
            
                55.40
             | 
            
                54.78
             |                     
            
                49.88
             |                                 
            
                27,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |