| 
                 
                    Closing price on 8/9/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    67.30 | 
                 
                
                    | High | 
                    67.30 | 
                 
                
                    | Low | 
                    66.00 | 
                     
                
                    | Volume | 
                    116,390 | 
                                 
                
                    | Split-adjusted Price | 
                    57.31 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/9/2019
             | 
            
                -0.10 / -0.15%
             |             
            
                67.30
             |           
            
                67.30
             |               
            
                66.00
             |                           
            
                67.00
             | 
            
                66.90
             |                     
            
                57.31
             |                                 
            
                116,390
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2019
             | 
            
                +1.00 / +1.51%
             |             
            
                66.00
             |           
            
                67.40
             |               
            
                65.50
             |                           
            
                67.10
             | 
            
                66.77
             |                     
            
                57.40
             |                                 
            
                133,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2019
             | 
            
                +2.10 / +3.28%
             |             
            
                64.00
             |           
            
                66.60
             |               
            
                63.80
             |                           
            
                66.10
             | 
            
                65.52
             |                     
            
                56.54
             |                                 
            
                185,220
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2019
             | 
            
                -0.40 / -0.62%
             |             
            
                64.20
             |           
            
                64.20
             |               
            
                63.00
             |                           
            
                64.00
             | 
            
                63.36
             |                     
            
                54.74
             |                                 
            
                77,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2019
             | 
            
                -0.10 / -0.16%
             |             
            
                64.50
             |           
            
                64.60
             |               
            
                63.80
             |                           
            
                64.40
             | 
            
                64.30
             |                     
            
                55.09
             |                                 
            
                58,040
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2019
             | 
            
                +0.30 / +0.47%
             |             
            
                64.30
             |           
            
                65.00
             |               
            
                63.80
             |                           
            
                64.50
             | 
            
                64.43
             |                     
            
                55.17
             |                                 
            
                64,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2019
             | 
            
                +2.00 / +3.22%
             |             
            
                62.20
             |           
            
                64.30
             |               
            
                62.20
             |                           
            
                64.20
             | 
            
                63.70
             |                     
            
                54.92
             |                                 
            
                102,440
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2019
             | 
            
                +1.20 / +1.97%
             |             
            
                61.20
             |           
            
                62.90
             |               
            
                60.80
             |                           
            
                62.20
             | 
            
                61.50
             |                     
            
                53.20
             |                                 
            
                67,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2019
             | 
            
                0.00 / 0.00%
             |             
            
                61.00
             |           
            
                61.20
             |               
            
                60.80
             |                           
            
                61.00
             | 
            
                61.00
             |                     
            
                52.18
             |                                 
            
                72,530
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2019
             | 
            
                -0.70 / -1.13%
             |             
            
                61.70
             |           
            
                61.70
             |               
            
                60.80
             |                           
            
                61.00
             | 
            
                61.07
             |                     
            
                52.18
             |                                 
            
                56,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2019
             | 
            
                +0.10 / +0.16%
             |             
            
                61.60
             |           
            
                61.80
             |               
            
                61.60
             |                           
            
                61.70
             | 
            
                61.66
             |                     
            
                52.78
             |                                 
            
                56,710
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2019
             | 
            
                +0.20 / +0.33%
             |             
            
                61.40
             |           
            
                61.70
             |               
            
                61.30
             |                           
            
                61.60
             | 
            
                61.47
             |                     
            
                52.69
             |                                 
            
                53,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2019
             | 
            
                -0.20 / -0.32%
             |             
            
                61.60
             |           
            
                61.80
             |               
            
                61.20
             |                           
            
                61.40
             | 
            
                61.51
             |                     
            
                52.52
             |                                 
            
                59,860
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2019
             | 
            
                +0.40 / +0.65%
             |             
            
                61.20
             |           
            
                61.60
             |               
            
                61.00
             |                           
            
                61.60
             | 
            
                61.21
             |                     
            
                52.69
             |                                 
            
                62,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2019
             | 
            
                -1.20 / -1.92%
             |             
            
                62.40
             |           
            
                62.50
             |               
            
                61.20
             |                           
            
                61.20
             | 
            
                61.68
             |                     
            
                52.35
             |                                 
            
                71,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2019
             | 
            
                -0.40 / -0.64%
             |             
            
                62.80
             |           
            
                62.80
             |               
            
                62.20
             |                           
            
                62.40
             | 
            
                62.41
             |                     
            
                53.38
             |                                 
            
                61,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2019
             | 
            
                -0.10 / -0.16%
             |             
            
                62.90
             |           
            
                63.00
             |               
            
                62.70
             |                           
            
                62.80
             | 
            
                62.82
             |                     
            
                53.72
             |                                 
            
                60,090
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2019
             | 
            
                +0.10 / +0.16%
             |             
            
                63.00
             |           
            
                63.10
             |               
            
                62.70
             |                           
            
                62.90
             | 
            
                62.85
             |                     
            
                53.80
             |                                 
            
                62,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2019
             | 
            
                +0.20 / +0.32%
             |             
            
                62.60
             |           
            
                63.10
             |               
            
                62.50
             |                           
            
                62.80
             | 
            
                62.81
             |                     
            
                53.72
             |                                 
            
                60,530
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                62.80
             |           
            
                63.00
             |               
            
                62.40
             |                           
            
                62.60
             | 
            
                62.68
             |                     
            
                53.55
             |                                 
            
                58,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2019
             | 
            
                +0.40 / +0.64%
             |             
            
                62.20
             |           
            
                62.80
             |               
            
                61.50
             |                           
            
                62.60
             | 
            
                62.17
             |                     
            
                53.55
             |                                 
            
                65,550
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2019
             | 
            
                -1.30 / -2.05%
             |             
            
                63.80
             |           
            
                63.80
             |               
            
                62.00
             |                           
            
                62.20
             | 
            
                62.82
             |                     
            
                53.20
             |                                 
            
                76,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2019
             | 
            
                +0.20 / +0.32%
             |             
            
                63.60
             |           
            
                63.60
             |               
            
                62.90
             |                           
            
                63.50
             | 
            
                63.17
             |                     
            
                54.32
             |                                 
            
                65,710
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2019
             | 
            
                -0.50 / -0.78%
             |             
            
                64.20
             |           
            
                64.20
             |               
            
                63.00
             |                           
            
                63.30
             | 
            
                63.45
             |                     
            
                54.15
             |                                 
            
                76,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2019
             | 
            
                -0.40 / -0.62%
             |             
            
                64.20
             |           
            
                64.60
             |               
            
                63.60
             |                           
            
                63.80
             | 
            
                64.04
             |                     
            
                54.57
             |                                 
            
                62,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2019
             | 
            
                +0.20 / +0.31%
             |             
            
                64.00
             |           
            
                64.30
             |               
            
                63.90
             |                           
            
                64.20
             | 
            
                64.07
             |                     
            
                54.92
             |                                 
            
                97,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2019
             | 
            
                +0.30 / +0.47%
             |             
            
                63.70
             |           
            
                64.00
             |               
            
                63.70
             |                           
            
                64.00
             | 
            
                63.86
             |                     
            
                54.74
             |                                 
            
                74,580
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2019
             | 
            
                -0.20 / -0.31%
             |             
            
                63.90
             |           
            
                64.00
             |               
            
                63.70
             |                           
            
                63.70
             | 
            
                63.86
             |                     
            
                54.49
             |                                 
            
                63,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2019
             | 
            
                -0.20 / -0.31%
             |             
            
                64.10
             |           
            
                64.20
             |               
            
                63.80
             |                           
            
                63.90
             | 
            
                64.01
             |                     
            
                54.66
             |                                 
            
                61,520
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2019
             | 
            
                +0.10 / +0.16%
             |             
            
                64.20
             |           
            
                64.20
             |               
            
                63.90
             |                           
            
                64.10
             | 
            
                64.05
             |                     
            
                54.83
             |                                 
            
                66,490
             |  
            
                 
             |                                                              
             
    
         
    
    
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