| 
                 
                    Closing price on 12/21/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.70 | 
                 
                
                    | High | 
                    9.30 | 
                 
                
                    | Low | 
                    8.70 | 
                     
                
                    | Volume | 
                    13,240 | 
                                 
                
                    | Split-adjusted Price | 
                    8.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ATG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/21/2016
             | 
            
                -0.65 / -6.95%
             |             
            
                8.70
             |           
            
                9.30
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.99
             |                     
            
                8.70
             |                                 
            
                13,240
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2016
             | 
            
                -0.70 / -6.97%
             |             
            
                9.35
             |           
            
                9.35
             |               
            
                9.35
             |                           
            
                9.35
             | 
            
                9.35
             |                     
            
                9.35
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2016
             | 
            
                -0.75 / -6.94%
             |             
            
                10.05
             |           
            
                10.05
             |               
            
                10.05
             |                           
            
                10.05
             | 
            
                10.05
             |                     
            
                10.05
             |                                 
            
                3,950
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2016
             | 
            
                -0.80 / -6.90%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                10.80
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/15/2016
             | 
            
                -0.85 / -6.83%
             |             
            
                12.45
             |           
            
                12.50
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                12.39
             |                     
            
                11.60
             |                                 
            
                115,440
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2016
             | 
            
                -0.30 / -2.35%
             |             
            
                12.75
             |           
            
                12.75
             |               
            
                11.90
             |                           
            
                12.45
             | 
            
                12.67
             |                     
            
                12.45
             |                                 
            
                408,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2016
             | 
            
                -0.10 / -0.78%
             |             
            
                12.85
             |           
            
                12.85
             |               
            
                12.70
             |                           
            
                12.75
             | 
            
                12.76
             |                     
            
                12.75
             |                                 
            
                195,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2016
             | 
            
                -0.10 / -0.77%
             |             
            
                12.95
             |           
            
                13.10
             |               
            
                12.60
             |                           
            
                12.85
             | 
            
                12.83
             |                     
            
                12.85
             |                                 
            
                360,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2016
             | 
            
                -0.05 / -0.38%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.80
             |                           
            
                12.95
             | 
            
                12.94
             |                     
            
                12.95
             |                                 
            
                174,310
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2016
             | 
            
                -0.30 / -2.26%
             |             
            
                13.20
             |           
            
                13.40
             |               
            
                13.00
             |                           
            
                13.00
             | 
            
                13.10
             |                     
            
                13.00
             |                                 
            
                184,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2016
             | 
            
                +0.55 / +4.31%
             |             
            
                12.70
             |           
            
                13.30
             |               
            
                12.60
             |                           
            
                13.30
             | 
            
                13.04
             |                     
            
                13.30
             |                                 
            
                242,220
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2016
             | 
            
                -0.05 / -0.39%
             |             
            
                12.80
             |           
            
                13.20
             |               
            
                12.70
             |                           
            
                12.75
             | 
            
                12.81
             |                     
            
                12.75
             |                                 
            
                444,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2016
             | 
            
                -0.30 / -2.29%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.94
             |                     
            
                12.80
             |                                 
            
                231,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2016
             | 
            
                +0.10 / +0.77%
             |             
            
                13.00
             |           
            
                13.10
             |               
            
                12.95
             |                           
            
                13.10
             | 
            
                13.04
             |                     
            
                13.10
             |                                 
            
                275,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2016
             | 
            
                -0.10 / -0.76%
             |             
            
                13.10
             |           
            
                13.20
             |               
            
                12.90
             |                           
            
                13.00
             | 
            
                13.06
             |                     
            
                13.00
             |                                 
            
                680,350
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2016
             | 
            
                0.00 / 0.00%
             |             
            
                13.10
             |           
            
                13.20
             |               
            
                12.95
             |                           
            
                13.10
             | 
            
                12.99
             |                     
            
                13.10
             |                                 
            
                255,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2016
             | 
            
                0.00 / 0.00%
             |             
            
                13.10
             |           
            
                13.30
             |               
            
                12.70
             |                           
            
                13.10
             | 
            
                13.04
             |                     
            
                13.10
             |                                 
            
                316,130
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2016
             | 
            
                -0.20 / -1.50%
             |             
            
                13.30
             |           
            
                13.30
             |               
            
                12.90
             |                           
            
                13.10
             | 
            
                13.06
             |                     
            
                13.10
             |                                 
            
                152,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2016
             | 
            
                +0.10 / +0.76%
             |             
            
                13.20
             |           
            
                13.30
             |               
            
                13.10
             |                           
            
                13.30
             | 
            
                13.16
             |                     
            
                13.30
             |                                 
            
                244,520
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2016
             | 
            
                +0.10 / +0.76%
             |             
            
                13.10
             |           
            
                13.20
             |               
            
                12.90
             |                           
            
                13.20
             | 
            
                13.07
             |                     
            
                13.20
             |                                 
            
                237,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2016
             | 
            
                -0.30 / -2.24%
             |             
            
                13.30
             |           
            
                13.60
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.38
             |                     
            
                13.10
             |                                 
            
                356,550
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2016
             | 
            
                +0.10 / +0.75%
             |             
            
                13.20
             |           
            
                13.50
             |               
            
                13.10
             |                           
            
                13.40
             | 
            
                13.23
             |                     
            
                13.40
             |                                 
            
                429,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2016
             | 
            
                +0.30 / +2.31%
             |             
            
                13.00
             |           
            
                13.30
             |               
            
                12.90
             |                           
            
                13.30
             | 
            
                13.05
             |                     
            
                13.30
             |                                 
            
                479,720
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2016
             | 
            
                +0.15 / +1.17%
             |             
            
                12.90
             |           
            
                13.00
             |               
            
                12.80
             |                           
            
                13.00
             | 
            
                12.89
             |                     
            
                13.00
             |                                 
            
                476,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2016
             | 
            
                -0.35 / -2.65%
             |             
            
                13.20
             |           
            
                13.20
             |               
            
                12.80
             |                           
            
                12.85
             | 
            
                12.93
             |                     
            
                12.85
             |                                 
            
                174,360
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2016
             | 
            
                0.00 / 0.00%
             |             
            
                13.10
             |           
            
                13.20
             |               
            
                13.00
             |                           
            
                13.20
             | 
            
                13.14
             |                     
            
                13.20
             |                                 
            
                258,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2016
             | 
            
                -0.10 / -0.75%
             |             
            
                13.20
             |           
            
                13.40
             |               
            
                13.00
             |                           
            
                13.20
             | 
            
                13.19
             |                     
            
                13.20
             |                                 
            
                250,120
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2016
             | 
            
                +0.20 / +1.53%
             |             
            
                13.10
             |           
            
                13.50
             |               
            
                13.10
             |                           
            
                13.30
             | 
            
                13.32
             |                     
            
                13.30
             |                                 
            
                305,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                13.00
             |           
            
                13.20
             |               
            
                13.00
             |                           
            
                13.10
             | 
            
                13.11
             |                     
            
                13.10
             |                                 
            
                401,120
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2016
             | 
            
                +0.05 / +0.38%
             |             
            
                13.05
             |           
            
                13.30
             |               
            
                13.05
             |                           
            
                13.10
             | 
            
                13.11
             |                     
            
                13.10
             |                                 
            
                214,260
             |  
            
                 
             |                                                              
             
    
         
    
    
 |