| 
                 
                    Closing price on 6/22/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    64.00 | 
                 
                
                    | High | 
                    64.00 | 
                 
                
                    | Low | 
                    62.00 | 
                     
                
                    | Volume | 
                    57,950 | 
                                 
                
                    | Split-adjusted Price | 
                    42.74 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/22/2018
             | 
            
                -0.10 / -0.16%
             |             
            
                64.00
             |           
            
                64.00
             |               
            
                62.00
             |                           
            
                63.80
             | 
            
                63.66
             |                     
            
                42.74
             |                                 
            
                57,950
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2018
             | 
            
                +0.40 / +0.63%
             |             
            
                64.20
             |           
            
                64.50
             |               
            
                61.00
             |                           
            
                63.90
             | 
            
                63.02
             |                     
            
                42.80
             |                                 
            
                90,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2018
             | 
            
                +2.20 / +3.59%
             |             
            
                62.00
             |           
            
                64.00
             |               
            
                61.50
             |                           
            
                63.50
             | 
            
                62.51
             |                     
            
                42.53
             |                                 
            
                60,870
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2018
             | 
            
                -3.70 / -5.69%
             |             
            
                65.00
             |           
            
                65.00
             |               
            
                61.00
             |                           
            
                61.30
             | 
            
                61.94
             |                     
            
                41.06
             |                                 
            
                57,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2018
             | 
            
                0.00 / 0.00%
             |             
            
                67.00
             |           
            
                67.00
             |               
            
                62.00
             |                           
            
                65.00
             | 
            
                64.85
             |                     
            
                43.54
             |                                 
            
                59,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2018
             | 
            
                +0.10 / +0.15%
             |             
            
                67.50
             |           
            
                67.80
             |               
            
                66.50
             |                           
            
                67.00
             | 
            
                67.01
             |                     
            
                43.54
             |                                 
            
                51,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                67.30
             |           
            
                67.70
             |               
            
                66.00
             |                           
            
                66.90
             | 
            
                66.97
             |                     
            
                43.47
             |                                 
            
                116,820
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2018
             | 
            
                +0.90 / +1.36%
             |             
            
                68.00
             |           
            
                68.00
             |               
            
                65.60
             |                           
            
                66.90
             | 
            
                66.89
             |                     
            
                43.47
             |                                 
            
                71,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2018
             | 
            
                -0.70 / -1.05%
             |             
            
                66.10
             |           
            
                66.50
             |               
            
                65.10
             |                           
            
                66.00
             | 
            
                65.80
             |                     
            
                42.89
             |                                 
            
                81,340
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2018
             | 
            
                -0.50 / -0.74%
             |             
            
                68.20
             |           
            
                68.20
             |               
            
                66.00
             |                           
            
                66.70
             | 
            
                66.55
             |                     
            
                43.34
             |                                 
            
                73,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2018
             | 
            
                -1.40 / -2.04%
             |             
            
                68.60
             |           
            
                68.60
             |               
            
                66.90
             |                           
            
                67.20
             | 
            
                67.32
             |                     
            
                43.67
             |                                 
            
                96,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2018
             | 
            
                +0.10 / +0.15%
             |             
            
                69.00
             |           
            
                69.90
             |               
            
                68.00
             |                           
            
                68.60
             | 
            
                68.59
             |                     
            
                44.58
             |                                 
            
                68,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2018
             | 
            
                -0.20 / -0.29%
             |             
            
                69.00
             |           
            
                69.00
             |               
            
                67.50
             |                           
            
                68.50
             | 
            
                68.22
             |                     
            
                44.51
             |                                 
            
                80,910
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2018
             | 
            
                -0.80 / -1.15%
             |             
            
                68.50
             |           
            
                69.30
             |               
            
                68.20
             |                           
            
                68.70
             | 
            
                68.87
             |                     
            
                44.64
             |                                 
            
                140,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2018
             | 
            
                +0.20 / +0.29%
             |             
            
                69.90
             |           
            
                69.90
             |               
            
                68.00
             |                           
            
                69.50
             | 
            
                69.44
             |                     
            
                45.16
             |                                 
            
                80,290
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2018
             | 
            
                +4.50 / +6.94%
             |             
            
                61.80
             |           
            
                69.30
             |               
            
                61.80
             |                           
            
                69.30
             | 
            
                67.11
             |                     
            
                45.03
             |                                 
            
                91,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2018
             | 
            
                +1.70 / +2.69%
             |             
            
                63.10
             |           
            
                66.40
             |               
            
                63.10
             |                           
            
                64.80
             | 
            
                65.58
             |                     
            
                42.11
             |                                 
            
                52,930
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2018
             | 
            
                +4.10 / +6.95%
             |             
            
                59.30
             |           
            
                63.10
             |               
            
                59.30
             |                           
            
                63.10
             | 
            
                62.69
             |                     
            
                41.00
             |                                 
            
                62,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2018
             | 
            
                -4.00 / -6.35%
             |             
            
                63.00
             |           
            
                63.10
             |               
            
                59.00
             |                           
            
                59.00
             | 
            
                61.77
             |                     
            
                38.34
             |                                 
            
                171,350
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2018
             | 
            
                -2.20 / -3.37%
             |             
            
                64.00
             |           
            
                64.20
             |               
            
                63.00
             |                           
            
                63.00
             | 
            
                63.78
             |                     
            
                40.94
             |                                 
            
                93,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2018
             | 
            
                -0.80 / -1.21%
             |             
            
                65.50
             |           
            
                65.50
             |               
            
                64.30
             |                           
            
                65.20
             | 
            
                65.08
             |                     
            
                42.37
             |                                 
            
                84,480
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2018
             | 
            
                -0.90 / -1.35%
             |             
            
                65.50
             |           
            
                66.50
             |               
            
                65.50
             |                           
            
                66.00
             | 
            
                66.32
             |                     
            
                42.89
             |                                 
            
                60,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2018
             | 
            
                -0.60 / -0.89%
             |             
            
                67.00
             |           
            
                67.00
             |               
            
                66.00
             |                           
            
                66.90
             | 
            
                66.48
             |                     
            
                43.47
             |                                 
            
                57,130
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2018
             | 
            
                -2.00 / -2.88%
             |             
            
                69.50
             |           
            
                69.50
             |               
            
                67.50
             |                           
            
                67.50
             | 
            
                68.36
             |                     
            
                43.86
             |                                 
            
                70,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2018
             | 
            
                -0.50 / -0.71%
             |             
            
                68.50
             |           
            
                70.20
             |               
            
                68.50
             |                           
            
                69.50
             | 
            
                69.82
             |                     
            
                45.16
             |                                 
            
                65,640
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2018
             | 
            
                +0.30 / +0.43%
             |             
            
                70.00
             |           
            
                70.10
             |               
            
                69.60
             |                           
            
                70.00
             | 
            
                69.78
             |                     
            
                45.49
             |                                 
            
                53,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2018
             | 
            
                +0.60 / +0.87%
             |             
            
                70.00
             |           
            
                70.30
             |               
            
                69.60
             |                           
            
                69.70
             | 
            
                69.75
             |                     
            
                45.29
             |                                 
            
                43,170
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2018
             | 
            
                -1.00 / -1.43%
             |             
            
                69.30
             |           
            
                70.00
             |               
            
                69.00
             |                           
            
                69.10
             | 
            
                69.32
             |                     
            
                44.90
             |                                 
            
                91,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2018
             | 
            
                -0.90 / -1.27%
             |             
            
                70.00
             |           
            
                71.20
             |               
            
                70.00
             |                           
            
                70.10
             | 
            
                70.56
             |                     
            
                45.55
             |                                 
            
                90,040
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2018
             | 
            
                +1.00 / +1.43%
             |             
            
                70.00
             |           
            
                71.50
             |               
            
                69.80
             |                           
            
                71.00
             | 
            
                70.45
             |                     
            
                46.14
             |                                 
            
                75,220
             |  
            
                 
             |                                                              
             
    
         
    
    
 |