| 
                 
                    Closing price on 5/30/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.80 | 
                 
                
                    | High | 
                    1.90 | 
                 
                
                    | Low | 
                    1.80 | 
                     
                
                    | Volume | 
                    1,003,100 | 
                                 
                
                    | Split-adjusted Price | 
                    1.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/30/2017
             | 
            
                -0.10 / -5.26%
             |             
            
                1.80
             |           
            
                1.90
             |               
            
                1.80
             |                           
            
                1.80
             | 
            
                1.81
             |                     
            
                1.80
             |                                 
            
                1,003,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2017
             | 
            
                +0.10 / +5.56%
             |             
            
                1.80
             |           
            
                1.90
             |               
            
                1.70
             |                           
            
                1.90
             | 
            
                1.81
             |                     
            
                1.90
             |                                 
            
                1,914,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2017
             | 
            
                +0.10 / +5.88%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.80
             | 
            
                1.73
             |                     
            
                1.80
             |                                 
            
                255,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2017
             | 
            
                -0.10 / -5.56%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                331,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.80
             | 
            
                1.72
             |                     
            
                1.80
             |                                 
            
                132,320
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2017
             | 
            
                +0.10 / +5.88%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.80
             | 
            
                1.71
             |                     
            
                1.80
             |                                 
            
                330,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2017
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.72
             |                     
            
                1.70
             |                                 
            
                1,271,711
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2017
             | 
            
                +0.10 / +5.88%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.80
             | 
            
                1.72
             |                     
            
                1.80
             |                                 
            
                1,247,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2017
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.74
             |                     
            
                1.70
             |                                 
            
                238,505
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2017
             | 
            
                +0.10 / +5.88%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.80
             | 
            
                1.80
             |                     
            
                1.80
             |                                 
            
                1,649,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2017
             | 
            
                +0.10 / +6.25%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                1,783,410
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.61
             |                     
            
                1.60
             |                                 
            
                282,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/12/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.61
             |                     
            
                1.60
             |                                 
            
                161,610
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2017
             | 
            
                -0.10 / -5.88%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.62
             |                     
            
                1.60
             |                                 
            
                115,534
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2017
             | 
            
                +0.10 / +6.25%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                274,966
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.61
             |                     
            
                1.60
             |                                 
            
                299,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2017
             | 
            
                -0.10 / -5.88%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.63
             |                     
            
                1.60
             |                                 
            
                42,613
             |            
            
                 
             |                                       
         
    
        
            | 
                5/5/2017
             | 
            
                +0.10 / +6.25%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.60
             |                     
            
                1.70
             |                                 
            
                576,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2017
             | 
            
                -0.10 / -5.88%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.68
             |                     
            
                1.60
             |                                 
            
                93,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                220,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                1,070,736
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                315,608
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                116,802
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.71
             |                     
            
                1.70
             |                                 
            
                118,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2017
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.72
             |                     
            
                1.70
             |                                 
            
                324,510
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2017
             | 
            
                +0.10 / +5.88%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.80
             | 
            
                1.70
             |                     
            
                1.80
             |                                 
            
                238,963
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                147,507
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                169,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                291,820
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2017
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                615,150
             |  
            
                 
             |                                                              
             
    
         
    
    
 |