| 
                 
                    Closing price on 11/29/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.00 | 
                 
                
                    | High | 
                    8.00 | 
                 
                
                    | Low | 
                    8.00 | 
                     
                
                    | Volume | 
                    100 | 
                                 
                
                    | Split-adjusted Price | 
                    6.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
AMS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                6.35
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2017
             | 
            
                +0.10 / +1.27%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                6.35
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                7.90
             |           
            
                8.00
             |               
            
                7.90
             |                           
            
                7.90
             | 
            
                7.91
             |                     
            
                6.27
             |                                 
            
                1,710
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2017
             | 
            
                +0.10 / +1.27%
             |             
            
                7.90
             |           
            
                8.00
             |               
            
                7.90
             |                           
            
                8.00
             | 
            
                7.93
             |                     
            
                6.35
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2017
             | 
            
                -0.10 / -1.25%
             |             
            
                7.90
             |           
            
                7.90
             |               
            
                7.90
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                6.27
             |                                 
            
                500,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2017
             | 
            
                +0.20 / +2.56%
             |             
            
                7.90
             |           
            
                8.00
             |               
            
                7.90
             |                           
            
                8.00
             | 
            
                7.91
             |                     
            
                6.35
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2017
             | 
            
                -0.10 / -1.27%
             |             
            
                7.60
             |           
            
                7.90
             |               
            
                7.60
             |                           
            
                7.80
             | 
            
                7.68
             |                     
            
                6.19
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2017
             | 
            
                +0.60 / +8.22%
             |             
            
                7.90
             |           
            
                7.90
             |               
            
                7.90
             |                           
            
                7.90
             | 
            
                7.90
             |                     
            
                6.27
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2017
             | 
            
                -0.60 / -7.59%
             |             
            
                7.30
             |           
            
                7.30
             |               
            
                7.30
             |                           
            
                7.30
             | 
            
                7.30
             |                     
            
                5.79
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2017
             | 
            
                -0.10 / -1.25%
             |             
            
                7.50
             |           
            
                8.00
             |               
            
                7.10
             |                           
            
                7.90
             | 
            
                7.33
             |                     
            
                6.27
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2017
             | 
            
                -0.10 / -1.23%
             |             
            
                8.00
             |           
            
                8.00
             |               
            
                8.00
             |                           
            
                8.00
             | 
            
                8.00
             |                     
            
                6.35
             |                                 
            
                110
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2017
             | 
            
                +0.30 / +3.85%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                12,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2017
             | 
            
                +0.50 / +6.85%
             |             
            
                6.50
             |           
            
                7.90
             |               
            
                6.50
             |                           
            
                7.80
             | 
            
                7.08
             |                     
            
                6.19
             |                                 
            
                3,970
             |            
            
                 
             |                                       
         
    
        
            | 
                11/10/2017
             | 
            
                -0.20 / -2.47%
             |             
            
                6.90
             |           
            
                7.90
             |               
            
                6.90
             |                           
            
                7.90
             | 
            
                7.29
             |                     
            
                6.27
             |                                 
            
                6,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/8/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/7/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                1,700,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/6/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                30
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/3/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                11/2/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/1/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/31/2017
             | 
            
                +0.50 / +6.58%
             |             
            
                8.10
             |           
            
                8.10
             |               
            
                8.10
             |                           
            
                8.10
             | 
            
                8.10
             |                     
            
                6.43
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/30/2017
             | 
            
                -1.30 / -14.61%
             |             
            
                8.00
             |           
            
                8.90
             |               
            
                7.60
             |                           
            
                7.60
             | 
            
                7.87
             |                     
            
                6.03
             |                                 
            
                9,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                7.06
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/26/2017
             | 
            
                +0.20 / +2.30%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.90
             |                           
            
                8.90
             | 
            
                8.90
             |                     
            
                7.06
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                10/25/2017
             | 
            
                +0.30 / +3.57%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.75
             |                     
            
                6.91
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/24/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                6.67
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/23/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                6.67
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/20/2017
             | 
            
                +0.10 / +1.20%
             |             
            
                8.40
             |           
            
                8.40
             |               
            
                8.40
             |                           
            
                8.40
             | 
            
                8.40
             |                     
            
                6.67
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/19/2017
             | 
            
                0.00 / 0.00%
             |             
            
                8.50
             |           
            
                8.50
             |               
            
                8.30
             |                           
            
                8.30
             | 
            
                8.44
             |                     
            
                6.59
             |                                 
            
                5,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |